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USER MANUAL www.eltek.com Inform mation in th his documen nt is believe ed to be acc curate as off the date o of publicatio on and is subject to change e without notice. n Thiss documen nt and the informatio on conta ained herein do not re epresent eitther a com mitment orr any guara antee on th he part of Eltek regarding the e reliability, fitness or compatibiliity of the p products an nd proce edures desc cribed. While e every reas sonable effo ort is made to ensure tthe accurac cy and completeness o of this document, d Eltek E assum mes no responsibility orr liability forr any damag ges that ma ay be directly or ind directly attributed to the t use of tthe informattion contain ned within o or to an ny errors or omissions. No part of this document d may m be reprroduced or transmitted in any forrm or by an ny mean ns - electro onic or mec chanical, inc cluding pho tocopying a and recordiing - for an ny purpo ose withoutt the expres ssed consen nt of Eltek. Copyrigh ht ©: Eltek, 2013 NS-EN ISO 9 9001 Certified Certifica ate No: 4072-2007-A AQ-NOR-NA NS-EN ISO 14 4001 Certified Certifica ate No: 11276-2007-A AE-NOR-NA 3571 116.013 Issue 2.0 0, April 2013 Publiished 2013-04 4-12 IngBjjoNo II User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 IMPORTANT SAFETY INSTRUCTIONS! SAVE THESE INSTRUCTIONS! Safety Instructions This User Manual contains important safety instructions for THEIA HE-t UL string inverters, which must be thoroughly read and followed prior to installation, operation and maintenance of the inverter. Ignoring these instructions may have serious consequences and may invalidate the warranty! Qualified persons Persons involved in installation, operation and maintenance of the inverter must be suitably qualified, and follow the instructions in this User Manual. Safety Protection The inverter offers a maximum level of safety to protect persons and equipment during installation, operation and maintenance. A high frequency transformer ensures galvanic isolation between the inverter and the grid. Anti-islanding protection monitors the grid preference and ensures interruption of the inverter’s supply of power whenever the grid voltage or frequency fluctuations are outside the required limits. A Ground Fault Detection and Interruption circuit ensures disconnection from the grid if a ground fault occurs. Warning Signs Three different warning signs highlight important information related to avoidance of personal injury and equipment damage. Pay attention when DANGER, WARNING and CAUTION appear in the text Electrical Codes The electrical installation must comply with the local regulations, the National Electrical Code (NEC), ANSI/NFPA 70 and OSHA regulations. User Manual THEIA HE-t UL String Inverters 357116.013, Issue 2.0, April 2013 III IV User Manual THEIA HE- t UL String Inverters 357116.013, Issue 2.0, April 2013 CONT C TENTS S 1. Introducttion ................................................................................................. 7 2. Product Overview O ........................................................................................ 9 2.1. 2.2. 2.3. 2.4. 3. Safety Precautions ................................................................................... 16 3.1. 3.2. 3.3. 4. Ch heck List by Failure ............................ ..................................................................81 Ta able of Even nts ..................................... ..................................................................81 Maintenance ............................................................................................. 87 8.1. 8.2. 8.3. 8.4. 9. Ac ccess Levels s and Passw words .......... ..................................................................58 LC CD Screen Menus M ................................ ..................................................................58 Co onnection be etween Inve erter and PC C ................................................................73 Intternal Webs server ............................... ..................................................................76 Troublesh hooting........................................................................................ 81 7.1. 7.2. 8. Initial Start .............................................. ..................................................................46 Operation n .................................................................................................. 5 58 6.1. 6.2. 6.3. 6.4. 7. Me echanical Installation ........................ ..................................................................23 Ch hecks Prior to t Electricall Installation n ................................................................26 Ele ectrical Insttallation............................ ..................................................................27 Start Up ...................................................................................................... 4 46 5.1. 6. Ge eneral Prepa arations ........................... ..................................................................16 Sitte Preparatiions .................................. ..................................................................18 Re equired Safe ety Equipme ent ............... ..................................................................20 Installatio on ................................................................................................ 23 4.1. 4.2. 4.3. 5. Sttandards and Approvals s ................... .................................................................... 9 Ge eneral Inform mation.............................. .................................................................... 9 Wa arning Symb bols .................................. ..................................................................10 Un npacking an nd Inspection .................. ..................................................................12 Sw witch-OFF .............................................. ..................................................................87 Re egular Syste em Inspectio ons .............. ..................................................................87 Re eplace Devic ces .................................... ..................................................................93 Re eturn and Disposal ............................. ..................................................................95 Warranty ................................................................................................... 97 9.1. 9.2. 10. Wa arranty Serv vice................................... ..................................................................97 Wa arranty Disc claimer ............................. ..................................................................97 Tech hnical Data a .................................................................................. 99 10.1. 10.2. Inv verter datas sheet................................ ..................................................................99 Fie eld Adjustab ble Trip Leve els................ .............................................................. 1 101 User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 V Addendum ..................................................................................................... 102 Contact Information ..................................................................................... 103 VI User Manual THEIA HE- t UL String Inverters 357116.013, Issue 2.0, April 2013 1. IN NTRO ODUC CTION N The THEIA T HE-t UL U inverters s are among g the most e efficient sin ngle phase g grid-tie inverrters on the market, wh hich results in high yield ds from the solar array. Figure F 1.1: PV system overv view o AC DC to In a grid-connect g ted photovo oltaic system the interfface between the solar array and the grid g consists s of an inverrter, which converts c DC C power pro oduced from m the solar array y into AC power compattible with th he voltage a and frequen ncy of the grid. s THEIA HE-t UL series The topology t of the THEIA HE-t H UL series consistss of an embe edded high-frequency trans sformer, which provides s galvanic is solation from m the grid tthereby mee ets the stricttest safety standards. Because off great adap ptability and d user friend dliness, the THEIA A HE-t UL is the perfectt choice for any photov voltaic (PV) installation n. Different confiiguration op ptions make e it suitable for crystalliine as well a as thin-film modules, and make m it easy y and afford dable to con nfigure for v various cond ditions and c countryspecific requirem ments. The compact c an nd lightweig ght construc ction provide for easy and straightforw s ward installa ation and maintenance . Integ grated Web b Server The inverter is equipped witth an integrated web se erver, which h records da ata on a daily,, monthly an nd yearly ba asis. All information is d displayed alpha-numeriically and in graph hs on a colo ored LCD scrreen on the front of the e inverter. T The data is a also accessible eithe er directly from a PC or via v the Inte rnet. All setttings and d data are saved in the inte egrated logg ger, which provides p sto orage of datta with fifteen-minute interv vals for one e week, daily y intervals for f one yearr or weekly iintervals for thirty years s. Auto omatic Syst tem The system s is fu ully automattic. The inve erter starts up in the m morning whe en the solar array y generates enough pow wer. During the day the e maximum power poin nt tracking User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 7 (MPPT) function ensures the highest possible energy harvest. The inverter goes into sleep mode at dusk when the solar array stops generating power. 8 User Manual THEIA HE- t UL String Inverters 357116.013, Issue 2.0, April 2013 2. PROD P UCT OVER O RVIEW W This chapter c gives an overv view of the inverter wit h its supplie ed compone ents and how they are assembled. A brief explan nation of ho ow to unpac ck and hand dle the inverrter safely is s given, and symbols ap ppearing bo oth on the in nverter and in this Userr Manu ual are expla ained. 2.1. Standa S ards an nd Apprrovals THEIA A HE-t UL in nverters are compatible e with most directives a and safety s standards, depe ending upon the grid setttings chosen: Table 2.1: Approved d standards Grid d Protection n Safety EMC • IEE EE 1547 • UL 1741 • • • • • FCC level B IEC/EN 610 000-6-2 (imm munity) IEC/EN 610 000-6-3 (emission) IEC/EN 610 000-3-2/-12 (harmonics) IEC/EN 610 000-3-3/-11((flicker) 2.2. Genera G al Inforrmation n Seve eral variation ns of the TH HEIA HE-t UL L are availab ble for different configu urations and d country-specific c requiremen nts. 2.2.1 1. Varian nts The instructions s given in this User Man nual are app licable to th he following g range of THEIA A HE-t UL so olar inverterrs: • THE EIA 2.0 HE-tt UL • THE EIA 2.9 HE-tt UL • THE EIA 3.8 HE-tt UL • THE EIA 4.4 HE-tt UL 2.2.2 2. Optio ons • Neg gative or po ositive groun nded system m • DC fuses User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 9 2.2.3 3. Key Features F • World’s highestt peak effic ciency for iso olated inverrters: up to 97.3 % • Flex xible system m configuration • Mon nitoring 24/ /7 • Inte ernal data lo ogger with storage s cap pacity of 15 minutes inttervals for o one week, dailly intervals for one yea ar or weekly intervals fo or thirty yea ars • MPP PT range: 23 30 - 500VDC • DC voltage ran nge: 220 - 60 00VDC • Auttomatic ON/ /OFF switch hing and tem mperature re egulation • Antti-islanding protection p • Rev verse DC polarity protection (diode es) • Gro ound Fault Detection D an nd Interruption 2.3. Warnin W ng Sym mbols The warning w sym mbols used in i this User Manual hig hlight important inform mation on how to avoid haz zards to peo ople and equipment. Pa ay particula ar attention n when these e symbols appear! a Table 2.2: Symbols appearing a in th he manual Symb bol De escription DA ANGER: Situations where e an immedia ate hazard co ould cause se erious inju ury or death to t workers and/or the ge eneral public if not avoide ed. WA ARNING: Sittuations whe ere a potentia ally hazardou us condition e exists that cou uld result in the t death or serious injury y of workers and/or the g general pub blic if not avo oided. CA AUTION: Situ uations wherre a non-imm mediate or pottential hazarrd presents a le esser threat of injury thatt could resultt in minor or moderate injjuries to wo orkers and/orr the generall public. NO OTICE: Situa ations where a non-immed diate or potential hazard presents a risk k to damage of property and a equipme ent. May be u used to indica ate imp portant operational chara acteristics. T here is no “S afety Alert” o or atttention symb bol present in n this situatio on. 10 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 2.3.1 1. Labeling 2.3.1 1.1. Produ uct Label The product p labe el is attache ed to the low wer right sid de of the inv verter hous sing. It conta ains importa ant identific cation inform mation and characterisstics for the inverter, and must m be clearly visible after a installlation. Figure 2.1: Product Labell Table 2.3: Symbols appearing a on the t product label Symb bol Description D Discharge D tim me: High volta ages may be present insid de the invertter for 1 hour after switch OFF Refer R to this User U Manuall: The safety precautions and instructtions in this manual m must be read and understood p prior to insta allation Danger: D Shock hazards – lethal voltage es are presen nt UL U listing: The e product me eets the UL 1 1741 safety, health and environmenta al protection requirementts. Disposal: D Do not n dispose in n general wa aste! Collect tthe various p parts separately an nd recycle the em according g to local reg gulations S – NO: Serial Number for inverter i iden tification 2.3.1 1.2. PCB Labels L The PCB P labels id dentify impo ortant inforrmation abo out the diffe erent termin nals in the custo omer conne ection area. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 11 Table 2.4: Symbols appearing a on the t PCB Sym mbol De escription Symboll AC C: Alternating g current te erminal. Descrription DC: Dirrect current terminal. Grrounding: Gro ound termina al. 2.4. Unpack U king an nd Insp pection n Follow w the instru uctions in th his section to t unpack a nd lift the in nverter safe ely and to preve ent injury an nd equipment damage. 2.4.1 1. Shipp ping Damage The THEIA T HE-t UL U inverters s are thorou ughly check ed and testted in accordance with international sta andards and d approvals prior to ship pping. The in nverter is ca arefully packed before shipping. How wever, if an ny damage tto the invertter is found when unpa acking, pleas se report it to t your disttributor imm mediately! 2.4.2 2. Lifting and Ca arrying th he Invertter Liftin ng and carry ying the inve erter must be b correctly y performed d to preventt back injuries, as the in nverters’ we eight is 49 – 53 lbs. / 22 2 - 24 kg (depending on n model). Fiigure 2.2: Corre ect lifting of th he inverter • When lifting, be end the kne ees, and kee ep the back straight. • Liftt carefully, hold h the inve erter close to t the body y and let the e leg muscle es do the work. • Turrn the whole e body as on ne unit to av void twistin g the lowerr back. • Carrry the inverrter close to o the body. 12 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 2.4.3 3. Unpac cking Unpa ack the inve erter as follo ows: • Place the box in i position, with w the top p clearly vissible and acc cording to tthe arrow markings on th he packaging. • Cutt the seal, and open the e box. • Rem move the up pper part off the foam packing p matterial and ta ake out the Installation Guiide and the envelope with w the extrra product la abel. • Botth sides of the t inverter case are na arrowed in o order to get g a betterr grip on the e inverter. Liift the inverrter carefully out of o the box us sing the “ha andles” as strated in Fiigure 2.3. illus • Rem move the lower section n of the foam m packaging g and tak ke out the in nverter mou unting brack ket. • The e bag with accessories a is attached d to the brac cket. • Sto ore all the orriginal packiing materiall for possiblle late er reuse. Figu ure 2.3: “Handles” Afterr unpacking the inverte er, check tha at all compo onents are iincluded and unda amaged. 2.4.4 4. Scope e of Deliv very • THE EIA HE-t UL single phas se inverter • Mou unting bracket • Insttallation Guide • Acc cessories: grounding sttrap, bracket screws, ex xtra produc ct label NOTICE Conduiits, fittings and a bonding g straps are e not part off the standa ard scope of supp ply, and mus st be provid ded by the ssystem insta aller. 2.4.5 5. Invert ter Enclo osure The housing h of the t THEIA HE-t H UL inverrter is desig ned to: • NEM MA 3R or 4X X (depending g upon mod del) for indoo or and outdoor use. • Pro ovide a degree of protec ction from falling f dirt, rrain, sleet, ssnow, windb blown dust, spla ashing wate er, hose-dire ected waterr and corrossion. • Be undamaged d by the extternal forma ation of ice o on the houssing. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 13 3 2.4.5 5.1. Mech hanical Dim mensions 3 inches / 72 20 mm H: 28.3 W:13.9 9 inches / 35 53 mm D: 6.2 inches / 158 8 mm Figure 2.4 4: Mechanical dimensions 2.4.5 5.2. Front t Covers The front f surfac ce of the inv verter consis sts of an up pper and a lo ower cover.. pper cover 1. Up 2. Dissplay 3. Lo ower cover w with DC discon nnect sw witch 4. Ho ole covers (K Knockouts) Figure 2.5:: Inverter struc cture u coverr may be rem moved by Eltek E author ized person ns only. Rem moval of the e The upper uppe er cover by unauthorize u ed persons voids v the wa arranty! The lower l coverr protects th he custome er connectio on area, and d may be rem moved by the system s insta aller for elec ctrical conn nection and maintenanc ce. 2.4.6 6. Remo oving the e Lower Cover C The lower cover protects th he connectio on area in th he inverter and also the inbuilt comb biner box ca alled the Strringbox. The e lower cove er is equippe ed with a DC C switch on n the front, f which make it eas sy to de-ene ergize the D DC terminalss on the inve erter. 14 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 WARN NING The inv verter is cha arged with high h voltage es, and remo oval of the lower coverr may on nly be perfo ormed by qualified perso ons. urn OFF the AC circuit breaker b and the DC - sw witch. 1. Tu DANG GER Always s disconnect the PV arrray cables ffrom the inv verter after turning the AC and d DC OFF, bu ut before removing the e covers, as the PV arra ay can supply up to 600 VDC to the in nverter whe n exposed tto sunlight. 2. Re emove the four screws on the front with a 4 m mm hex key.. 3. An ngle the cov ver outwards, and take it off carefu ully. Figu ure 2.6: Remov ving the lowerr cover 4. Store the lower cover and screws sa afely to avo id loss or da amage. 5. Fasten the screws on the e lower cove er with a torrque of 0.74 4 ft-lbf / 1.0 0 Nm. CAUT TION Never remove the e inverter low wer cover in n wet condittions! Remo oval of the inverte er lower cov ver during ra ain or in dam mp condition ns can dama age sensitive internal electronic e components c s. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 15 5 3. SAFET S TY PR RECAUTIONS This chapter c con ntains instru uctions on how h to insta all, operate a and maintain the THEIA A HE-t UL inverters safely. These safety precautionss must be re ead thoroug ghly and unde erstood prior to installattion. Failure e to follow th he safety precautions may result in inju ury or death h and may void v the warrranty. 3.1. Genera G al Preparation ns The THEIA T HE-t UL U inverters s contain no o user-servic ceable partss, and insta allation and main ntenance mu ust be perfo ormed by qu ualified perrsons, who h have knowle edge of state e and federa al electrical regulations s ANSI/NFPA A 70 NEC an nd OSHA, an nd follow such regulations s, and the in nstructions in this Userr Manual. NOTICE The safety precau utions and in nstructions in this Userr Manual mu ust be read thoroughly to be able a to insta all and opera ate the inve erter correc ctly. 3.1.1 1. Conne ections Contact the loca al utility com mpany for in nterconnecttion agreem ments and po ower appro oval before connecting g to the grid. WARN NING To ensure safe and correct ellectrical con nnection of the inverter and preven nt injury to persons p or damage d to tthe equipme ent the elec ctrical wiring and connec ction must be b performe ed by qualifiied persons s. DANG GER Never work w with energized e po orts! Prior to o the electrical connecttion, the AC C circuit breaker(s) and a the DC switch s musst be turned d OFF to ensure that the terrminals are discharged d and safe to o work on. • Rea ad the instru uctions and cautions on n the PV mo odules priorr to the elec ctrical con nnection. • The e inverter must be conn nected to a dedicated A AC circuit. N No other dev vices are to o be connected to t this circu uit. 16 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 3.1.2 2. Opera ation The inverter mus st only be operated o in accordance a e with the instructions iin this User Manu ual. NOTICE The TH HEIA HE-t UL L is a grid intteractive inv verter and m must be use ed exclusively for its designed purpose, whiich is to con nvert PV-generated DC electric city into AC electricity to t feed into o the grid. • The e inverter must be operrated without any unau uthorized modifications s. • To avoid a damage to the in nverter, it must be used d within the operationa al limits give en in the t technica al specificattions. CAUT TION Keep the voltage and currentt within the specified lim mits! The vo oltage genera ated by PV modules m is in nversely pro oportional tto the temperature; at lower temperature t es the PV vo oltage incre eases from tthe productt label rating and a at highe er temperattures the PV V voltage de ecreases fro om the produc ct label ratin ng. NOTICE The op pen circuit voltage, VOC, must neverr exceed 60 00VDC under any conditions. The ma aximum PV system volltage is equal to the sum of the rated open-circuit o s, corrected d voltage, off the series--connected PV modules for the e lowest exp pected ambient temperrature. • Mis suse of the inverter may y damage the device o or other elec ctrical equip pment and can n interfere with w the ope eration of th he inverter, or may even n cause inju ury or death h to persons p ope erating and maintaining g the inverte er. • Igno oring the ins structions and a guidelines in this Usser Manual and not perrforming reg gular mainte enance may void the inv verter warra anty. 3.1.3 3. Maint tenance Prior to service and a mainten nance, the inverter musst always b be disconnected on both the AC and d the DC side es and be fu ully dischar ged. Refer tto 8.1. Switch-OFF. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 17 NOTICE Access sing the inve erter upper section voi ds the warrranty. The in nverter upper cover c must only be ope ened by autthorized perrsons due to o danger of damag ge to interna al componen nts. • The e inverter lower cover must m only be e taken off by qualified d persons du uring the electrical insta allation and maintenanc ce or repairss. • No unauthorize ed modificattions may be b made to tthe inverterr. Contact th he system insttaller or disttributor in case of failure. • Reg gular mainte enance mus st be perform med to max ximize the life expectan ncy of the inve erter (refer to 8.2. Regu ular System m Inspection ns). • A safety comp ponent mustt always be replaced by y the same type and ra ating. 3.2. Site S Prreparattions Obse erve the following preca autions whe en mounting g and installing the THE EIA HE-t UL inverrter on a suitable site. This T is crucia al to mainta ain the efficiency of the e inverter! 3.2.1 1. Mounting Loca ation Sufficient ventila ation and lo ow ambient temperaturre are neede ed to prevent perature buiild-up inside e the inverte er, which ca n result in p power losse es. temp CAUT TION Insuffic cient cooling g may lead to degradattion of perfo ormance! En nsure sufficie ent air space around th he inverter a and unblock ked ventilatiion openings for optim mum cooling g and efficie ent operatio on. • Obs serve the minimum m disttances spec cified below w to maintain n optimal co ooling: 18 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 5.75 inches / 400 mm 1. 15 2. 11 1.81 inches / 300 mm 3. 5.9 91 inches / 1 150 mm 4. 5.9 91 inches / 1 150 mm Figure 3.1: Minimum distances for fo optimum co ooling WARN NING The mo ounting surfface must be b suitable ffor the weig ght (44-49 lb bs/20-22 kg) and d temperatu ure (194°F /90°C) / of the e inverter. • The e inverter must be mou unted in a ve ertical posittion. • Kee ep the lower cover clos sed when mounting the e inverter to o avoid damage to inte ernal compo onents. • It is s not recommended to install the in nverters in lliving areas due to possible noise leve els of the in nverter. • The e display sho ould be at eye-level, e th he product la abel must b be visible an nd the con nnection are ea readily ac ccessible. 3.2.2 2. Enviro onment The installation of the inverrter must co omply with llocal regulations, the N National Electtrical Code and a the OSH HA regulatio ons. WARN NING Protect the inverter from flam mmable and d explosive e environmen nts to avoid fire, as the inverte er heat sink can reach ttemperature es as high a as 194°F/ /90°C during g long period ds of high p performance e operation. • Ens sure a longe er life and op ptimum perfformance off the inverter by installing it in a clea an, non-dus sty, dry and cool environ nment • Ens sure a non-fflammable and a non-exp plosive envirronment to avoid fire. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 19 • The e ambient te emperature e must be be etween -13°°F and 140 °°F/-25 °C an nd +60 °C. If the e temperatu ure rises abo ove 104°F/+ +40°C the in nverter may y start to red duce powerr to protect p inte ernal compo onents. • It is s recommen nded that no on-condensing relative humidity sh hould be between 4 % and d 95 %. NOTICE Avoid exposing e the inverter to direct sun nlight! Directt sunlight m may cause yield lo osses, as dirrect sunlight causes inc creased inte ernal tempe erature thatt can lea ad to reduce ed power ou utput. Also, direct sunlight may cause degrad dation of the e LCD screen quality. CAUT TION The inv verter shoulld be installed on a loca ation where e people can nnot accidentally come e in contact with the re ar inverter ssurface, due e to temperatures up to t 194°F/90 0°C. • The e inverter is suitable forr outdoor op peration, bu ut should be e sheltered ffrom direct sun nlight, snow w and rain, du ust and san nd. • Inve erter locatio on should be e in close prroximity to tthe PV array ys to minim mize DC loss ses. 3.3. Require R ed Safe ety Equipmen nt Comp pliance with h the local and a federal electrical e re egulations iss required to o satisfy the e safetty equipmen nt requirements. NOTICE Safety y equipmentt must be prrovided and installed by y the system m installer in compliance with h NEC to ens sure the req quired prote ection of the e PV system m is adequatte. 3.3.1 1. Disconnection n Devices s Disco onnection devices, swittches or circ cuit breake ers, enable a shut-off frrom the powe er source du uring operattion. They protect the c current-carrrying conductors and other system co omponents from f powerr surges and d system ma alfunctions, and help to o shut down the in nverter safe ely for mainttenance an d repairs. • Botth AC circuitt breaker(s) and DC switch are reco ommended on every cu urrentcarrying condu uctor to faciilitate mainttenance wo ork and repa airs of the in nverter. 20 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 • The e disconnect devices must m conform m to the loc cal and fede eral electrica al reg gulations, an nd have an interrupt ratting sufficie ent for the v voltage and current ava ailable in the e circuit. • Eac ch disconnection device e must be re eadily accesssible and totally enclo osed. All dev vices must be b permane ently marked d for their p purpose. 3.3.2 2. Overc current Protectio P on Device es Overcurrent prottection devices, fuses or circuit brreakers, pro otect the circuit erheating as a result off overload, sshort circuitt or ground conductors and prevent ove fault. • An overcurrentt protection n device is re equired on e each ungrou unded cond ductor. • If a fuse blows or a circuit breaker trip ps, the causse should allways be de etermined beffore replacin ng or resettting it. 3.3.2 2.1. Grou und Fault Protection P n (GFDI) • The e GFDI prote ects the neg gative/posittive grounde ed strings ffrom ground d faults in the e PV array orr in the PV conductors. c It is located d in the low wer compartment of the e Stringbox and is equipped d with a fing ger-safe fuse e holder. • If th he ground fa ault currentt exceeds 1A the GFDI o opens and tthe inverterr shuts down (Refer to 7.2. Table T of Eve ents). • The e rating of the GFDI is 600VDC and 1A. 1 3.3.2 2.2. DC Fu uses • DC fuses prote ect the cond ductors from m back feed d currents frrom parallell strings. The ey are located in the Sttringbox, equipped with h finger-safe e fuse holde ers to disc connect eac ch fuse inde ependently. • The e rating of the DC fuses s should be as per the rrecommend dations of th he PV module manuffacturer, UL requiremen nts and NEC C, with a maximum of 40 A. • DC fuses are normally nott a part of th he scope off delivery, an nd must be provided by y the e system ins staller. Eltek k may supplly DC fuses,, if they are specified att the time o of ord der. Table 3.1: DC curren nt characteristtics and recom mmended fuse e ratings Inv verter Type Max DC Curre ent 1x x PV String Fuses 2x PV Sttring Fusess 3x P PV String F Fuses THE EIA 2.0HE-t UL L THE EIA 2.9HE-t UL L THE EIA 3.8HE-t UL L THE EIA 4.4HE-t UL L 9.5A 13.5 5A 18.0 0A 21.0 0A 15A 22A 29A 33A 8A 11A 15A 17A 5A 8A 10A 11A User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 21 NOTICE Overcu urrent prote ection is nott required fo or PV stringss where the e maximum currentt, which is equal e to 1.25 5 x ISC, from all sourcess cannot exc ceed the ampacity of the PV V string con nductors or the maximu um overcurrrent device size sp pecified on the t PV modu ule product label. 3.3.2 2.3. AC Ov vercurrent Protectiion • The e AC Overcu urrent Detec ctor (OCD) protects p the e supply con nductors be etween the inve erter and th he grid. • AC OCD must be b provided by the systtem installe er. CAUT TION To redu uce the risk k of fire, the inverter AC C terminals m must only b be connec cted to a cirrcuit provide ed with bran nch circuit o overcurrentt protection in acco ordance with h the Nation nal Electrica al Code, ANS SI/NFPA 70, and having maximum ratings r as per Table 3.2 2 below Table 3.2: AC curren nt characteristtics and fuse rating r Inv verter Type THE EIA 2.0HE-t UL THE EIA 2.9HE-t UL THE EIA 3.8HE-t UL THE EIA 4.4HE-t UL Max AC C Current 208VAC 10.0A 14.0A 18.5A 21.5A 240VAC 8.5A 12.0A 16.0A 18.5A AC Fusses 208VAC 15A 20A 25A 30A 2 240VAC 15A 15A 20A 25A Tripping Ch haracteristic cs Type B or C Double Pole 3.3.3 3. Surge e Protecttion Overv voltage protection is used to prevent voltage e surges thrrough sensittive equip pment. The THEIA HE-t UL inverterrs are equipp ped with Te emperature protected Meta al Oxide Variistors (TMOV) on both the t DC sourrce current a and the AC output curre ent, which diverts the excessive e cu urrent from voltage surrges to grou und. • PV systems ins stalled in an n open or ex xposed envi ronment ne eed added p protection on botth the DC an nd AC sides,, as they can act as ligh htning rods.. • When the cond ductors are exposed to o transients,, their behav vior limits th he effe ectiveness of a surge arrester. a One or more s urge arrestters are needed in insttallations with w long con nductors to obtain the required lev vel of protec ction. • Reffer to NEC guidelines g fo or selecting appropriate e kA ratingss for overvoltage pro otection dev vices. • IEEE E provides a good base e for selectin ng kA rating gs of the surge arrester: The THEIA A HE--t UL inverte ers are desig gned for category B: 10 00 kA – 150 0 kA per pha ase. 22 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 4. IN NSTA ALLAT TION This chapter c des scribes how w to install th he inverter c correctly, b both mechan nically and electtrically, and details important issue es related to o the installation. The iinformation n is inttended for qualified q persons who follow f the in nstallation iinstructions s as described in this s User Manu ual. DANG GER Never work w with energized e po orts! All worrk on the inv verter mustt be perform med with th he terminals s disconnectted. NOTICE The Sa afety Precau utions (referr to 3. Safetty Precautio ons) and the e following detaile ed installatio on procedurres must be e read carefu ully prior to installa ation. 4.1. Mecha M nical In nstallation The mounting m su urface and the t mountin ng method m must be suittable for the inverter’s weight, dimensio ons and hou using tempe erature (Reffer to 10. Te echnical Datta). WARN NING Followiing the insta allation insttructions wi ll prevent p poor perform mance or possible lethal con nsequences s. 4.1.1 1. Wall Bracket B Depe ending on th he mounting g surface, diifferent mou unting meth hods may be e required tto secure the wall bracket. b The system in nstaller is re esponsible ffor selecting g the correc ct type and numbe er of fastene ers to suppo ort the weig ght of the in nverter on the mounting surfa ace. • The e bracket is designed to o support 176.4 lbs. / 8 80 kg. • The e inverter must be mou unted in a ve ertical orienttation! • Mou unt the inve erter in com mpliance with h the minim mum spacing g to ensure optimum coo oling (Refer to 3.2.1. Mo ounting Loca ation). This is especially y importantt with sev veral inverte ers installed d. • The e recommen nded height for the con nnection are ea is 40 - 55 5 inches /10 000-1400 mm m above floo or level. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 23 3 Asse embling The bracket b con nsists of thre ee parts: verter Bracket A. Inv B. Sp pacer (Option nal) C. Sttringbox brac cket Figure 4.1: Wall bracket components c emble the brracket as fo ollows: Asse Figure e 4.2: Assembling of the wa ll bracket 24 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 1. Fix x the drilling g template onto o the mo ounting surfface, and ussing a spirit level ensure e the e template is correctly leveled. 2. Us sing the guid de holes on the drilling template, d drill holes intto the moun nting surrface suitab ble for ¼ inc ch fixings off a type rele evant to the e mounting s surface, and d we eight of the inverter. 3. Re emove the drilling d temp plate from th he mounting g surface. 4. Fasten the inv verter brack ket to the wall w with a m minimum 2 sscrews. The installer is res sponsible fo or selecting the correctt dimension of the screws. The holles in the bra acket have a diameter of ¼ inch. 5. Th he correct distance between the in nverter brac cket and the e Stringbox bracket is: 1 45 D3 3 = 19 /8” (+ + /64”). Fastten the Stringbox brac ket to the w wall with minimum 2 scrrews. The holes in the Stringbox S bracket have e a diamete r of ¼ inch. The distances d be etween the e screws: CC1:: 3” CC2:: 6” CC3:: 7” CC4:: 2” CC5:: 3” D1: 2 21” (+ 45/64” – 0”) D2: 2 21 ¾” (+ 45/644” – 0”) Figure F 4.3: Disttances betwee en the fastene ers User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 25 5 4.1.2 2. Invert ter Attac ch the inverrter to the mounting m brracket as fo ollows: Figure 4.4: 4 Fasten the e inverter to th he bracket ooks for the carrier slotts (A) on the e upper back k of the inve erter and 1. Locate the ho e locating pin taps on the Stringbo ox (B). the 2. Lifft the invertter and guide the upperr hooks into o the slots o on the invertter bracket.. Alig gn the lowe er taps into the slots an nd slide the inverter onto the bracket. 3. En nsure that th he inverter is i securely aligned a in th he bracket rrails, and fasten the inv verter with 2 screws on n the bottom m of the Str ingbox. Rec commended d tightening torrque is 0.74 ft-lbf / 1.0 Nm. NOTICE Check that the inv verter is pro operly faste ned and sec cured to the e bracket prior to o the electriical wiring. 4.2. Checks C s Prior to Elec ctrical Installlation ; Make M sure th hat both the e AC circuit breaker(s) b a and the DC sswitch are O OFF and that ; ; ; ; th he terminals s are in a dis scharged sttate to prev ent shock h hazards during the in nstallation of o the invertter. Refer to o 8.1. Switch h-OFF. All electrical installations shall comply with the e current loc cal and fede eral ellectrical reg gulations. Check that th he PV and the grid spec cifications a are compatiible with the e inverter sp pecifications. Refer to 10. Technic cal Data. Check that th he inverter is properly fastened f an nd secured tto the brack ket. En nsure that the t conducttors are liste ed for PV ap pplications a and the site e en nvironment, and that they have th he correct color coding.. 26 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 ; En nsure that the t electrica al installatio on compliess with the lo ocal and nattional ellectrical reg gulations in force at the e installation n site. 4.3. Electri E cal Installatio on Corre ect electrica al connectio on is critical for achievin ng safe, long-term and reliable opera ation of the e entire PV system. s NOTICE The ele ectrical connections mu ust be perfo ormed by qu ualified persons and comply y with local and federall electrical rregulations and the insttructions detaile ed in this User Manual. Figu ure 4.5: Simpliffied system ov verview 4.3.1 1. Condu uctors Two important criteria c mustt be conside ered in selec ction of con nductor size es, namely ampa acity and vo oltage drop. Using corre ectly sized c conductors improves the efficienc cy of the PV system m. • Am mpacity refe ers to the cu urrent-carrying capacity y of the con nductor. The e larger the con nductor is, the greater its i capacity y to carry cu urrent. • Volltage drop is the reduction of volta age due to c cross sectio on, current fflow and leng gth of the conductor. c Itt is recomm mended to m minimize the e system conductor volttage drop. Voltage V drop is equivale ent to loss iin energy yield CAUT TION The conductor cro oss section area must c conform to tthe ratings of the NEC ards to prevent overhea ating and firre. standa User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 27 • Use e adequatelly sized conductors witth the corre ct temperatture rating and sunligh ht resistance. • Sec cure conduc ctors so that they are kept k away ffrom objectss that can d damage the insu ulation (e.g. sharp edge es). CAUT TION The conductors must m be liste ed for PV ap plications a and the site environ nment and have h the co orrect color coding to av void material damage and bo odily harm. 4.3.2 2. Conne ection Arrea 1. CAN N bus termina al 2. RS-4 485 terminall 3. Ethe ernet connec ction 4. Inte ernal DC term minal blocks, +PO OS and -NEG 5. Inte ernal DC ground terminal, GND D/PE 6. Inte ernal AC term minal block 7. DC ffuse board, S Stringbox 8. Equ uipment grounding bar, Strin ngbox Figure 4.6: Customer connection c are ea • DC connection n can be eith her a negatiive or positi ve grounde ed PV string con nfiguration. • AC connection n is performed differenttly dependin ng on the grrid configuration. • Nettwork connections are e the same regardless r o of the differrent DC and AC con nnection opttions. 28 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 4.3.2 2.1. Conduits The THEIA T HE-t UL U inverter Stringbox is s equipped w with covere ed holes (knockouts) to o fit the recomme ended condu uit fittings. • The e Stringbox connected to the bottom of the in nverter is m made of non--conductive e material and sh hipped with h knock outs s for ¾” and d 1” conduit fittings. • The e knock outs s are locate ed on the lefft and right sides, botto om and back of the Stringbox as specified in the t figure be elow. • It is s recommen nded to use a hole saw to remove tthe knockou uts, to ensu ure the hole is even e for fixin ng of the co onduit. Figurre 4.7: Knock outs o on the Stringbox Figure re 4.8: Remova al of the knock k outs • Use e a 1” hole saw s to remo ove the knoc ck outs for tthe ¾” fittin ngs and 1- 5/16” hole saw w to remove r the knock outs s for the 1” fittings. f • Pos sition the ho ole saw in th he middle off the knock out face. • Drill through th he cover. • Carrefully file down any rou ugh edges. NOTICE For con nduit hubs, use u only UL L Listed rainttight, or we et location, h hubs for entry in nto the enclosure Conduiits are conn nected to th he Stringbox x as follows : • DC co onduits are mounted on n the botto om of the Sttringbox. • AC co onduits are mounted on n the right sside of the Stringbox. • Netw work conduitts are moun nted on the left side off the Stringb box. Listed conduit fittings that fulfill the fo ollowing critteria should be used forr the THEIA ox knock ou uts: HE- t UL Stringbo User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 29 Figurre 4.9: Size critteria for condu uits to fit the S Stringbox kno ck outs Table 4.1: Recomme ended size for the conduits Sym mbol A B C D E F Size e 1 1 /9” / 28.8 mm 1 3/7” / 35.8 mm 2 /7” / 7.0 mm 1 3/7”/ 35.5 1 9/14 m 1 ” / 42.5 mm 11 m 1 /14” / 45.3 mm NOTICE Follow the guidelin nes from the conduit m manufacture er regarding g connec ction, groun nding and tig ghtening torrque. 4.3.3 3. Groun nding Prope er grounding g of the enttire PV syste em limits vo oltage surge es, gives a c common referrence point for the cond ductive partts and faciliitates the o operation off the overc current prottection deviices. DANG GER Ground ding should be carried out o by qualiffied persons only, and comply with local and national electriical regulatiions to prev vent shock h hazards. • The e AC input and AC output circuits are a isolated from the en nclosure an nd that sys stem ground ding, if required by Secttion 250 of the Nationa al Electrical Code, ANS SI/NFPA 70, is the resp ponsibility off the install er • The e Photovolta aic System Grounding shall s be insttalled per th he requirements of Sec ctions 690.4 41 through 690.47 6 of th he of the Na ational Electrical Code, ANSI/NFPA A 70 and is the responsibilitty of the insttaller • PV strings may y have the negative n or the t positive e conductorrs grounded d. The ounded cond ductors are terminated d at the equ uipment gro ounding barr in the gro Stringbox via the t GFDI (Fig gure 4.6, pos s. 8). 30 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 • All metallic conduit fitting gs shall also o be bonded d to the equ uipment gro ounding barr t Stringbo ox (Figure 4.6, pos. 8). in the • Folllow the insttructions an nd specificattions from tthe different PV module e manufacturers s regarding grounding requirement r ts. • All metal parts s of the THE EIA HE-t UL inverters are e electricallly bonded to o ground ough the te erminal GND D at the AC terminal t blo ock (Figure 4 4.6, pos. 6). thro CAUT TION Ground ded PV cond ductors are grounded v via the GFDI to the grou unding bar in the Stringbox S an nd must NO OT be ground ded at any o other point in the system m, as voltage potentials s can appea ar and possibly damage e electrical compo onents. 4.3.4 4. DC Co onnection ns (PV) The DC D connectiions include e wiring from m the PV mo odules throu ugh a combiner box to the in nverter. The e inverter is configured with a Strin ngbox. DANG GER Always s disconnect the PV arrray before sstarting the DC connecttions, as the PV array can supply s up to o 600 VDC to the inverte er when exp posed to sunligh ht. NOTICE When removing r th he lower cov ver to accesss the conne ection term minals ensure e that the DC C switch is in i the OFF p position. 4.3.4 4.1. DC Te erminals Figure 4.10 0: DC terminal blocks User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 31 The incoming PV V conductorrs shall be te erminated a at the 1.Ung grounded T Terminal and d 2.Gro ounded Terminal inside e the Stringb box. Figure 4.11: Fu use board in th he Stringbox F F1, F2, F3: DC C fuse holderrs. F F4: Ground fu use holder (GFDI). 1 1. Ungrounde ed Terminal: Terminal block for th he ungrounde ed PV conductorss. 2 2. Grounded T Terminal: Te erminal block for the grou unded PV conductors. N N: Receptacle e for monitorring the voltage bettween phase es and neutral. N N-N: Terminal block for th he neutral conductor. P conducto ors go throu ugh the DC switch s in th he Stringbox x, and are th hen The PV terminated at th he +POS and d –NEG term minal blockss in the lowe er inverter partment. comp +P POS: Positive e terminal blo ock -N NEG: Negativ ve terminal bllock Figu ure 4.12: Term minals in inverte er lower comp partment NOTICE The connection re equires remo oval of the iinverter low wer cover, an nd must be med by qualified perso ons only! perform 4.3.4 4.2. Array y Configurration A PV string cons sists of a certain numbe er of PV mo odules conne ected in serries. Strings s can be b connecte ed in paralle el forming an n array and attached to o the inverter. The THEIA A HE-t UL in nverters hav ve a large vo oltage range e, and several feasible PV string confiigurations are a possible.. Follow the NEC and th he module m manufacture er instru uctions whe en configuring the PV array! a • The e grounding g configurattion of the PV P array and d the conne ection to the e DC term minals depe end on the module m tech hnology. 32 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 • The e inverter is delivered frrom the fac ctory with a negative g grounded PV V array con nfiguration as a standa ard, but may y also be de elivered for a positive g grounded PV V arra ay configurration. • The e positive grounded PV V array conffiguration d differs from the negativ ve grounded d PV array config guration by the connec ction to the DC terminal blocks in tthe inverter low wer comparttment and in n the Stringbox and the e DC switch in the Strin ngbox. • Array configurration depends on the module m tec hnology use ed. Both the e positive d negative DC D terminal blocks have e three pairss of inputs, which allow w three and striings to be connected in n parallel. Du ue to the inv verter havin ng one MPP P-tracker the PV power shou uld be identtical for every string. NOTICE Maximum Voltage e: The open circuit volta age, VOC, mu ust never ex xceed 600 VDC und der any conditions. The e voltage ge enerated by PV modules is inverse ely proportio onal to the temperatur t re; at lower temperaturres the PV voltage e increases from the na ameplate ra ating and att higher tem mperatures the PV voltage decreases from the name eplate rating. 4.3.4 4.3. DC Sw witch The Stringbox S is attached to t the botto om of the inv verter, and provides PV V string connection via the wiring th hat runs from m the PV arrray. A DC diisconnect s switch is proviided and mo ounted in th he Stringbox x. NOTICE Before removing the t lower co over to acce ess the conn nection term minals ensure e that the DC C switch is in i the OFF p position, and d the PV arrray cables are disconnected. I = ON 0 =O OFF Figure 4.13: DC disco onnect switch D switch is s rated at: The DC 600V Vdc 25A User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 33 3 4.3.4 4.4. Posit tive Grounded PV Sttring The inverter is shipped s with a negative grounded d string configuration, if nothing else is specified at the time e of order. Th he differenc ce between n negative a and positive nded PV con nfigurations s is the conn nection to tthe Ungroun nded and Grrounded groun terminal blocks in i the String gbox and th he +POS and d –NEG term minal blocks in the inverrter lower co ompartment. The figure f below w shows the e difference between n egative and d positive grrounded string gs. Negative Grounded PV P String Figure F 4.14: Ne egative ground ded PV string Positive Grounded PV String Fig gure 4.15: Possitive grounded d PV string hange from Negative ground g to Po ositive grou und: To ch • Terrminate the positive co onductors att the termin nal block lab beled 2. Gro ounded in the e Stringbox. • Terrminate the negative conductors at a the termiinal block la abeled 1. Un ngrounded in the e Stringbox. • Terrminate the grounded positive p con nductor from m the fuse b board at the e +POS term minal block in the inverrter lower co ompartmen nt. • Terrminate the ungrounde ed negative conductor ffrom the DC C switch at tthe -NEG term minal block in the inverrter lower co ompartmen nt. • Tightening torq que is 1.47 ft-lbf / 2.0 Nm N for all te erminals. 34 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 4.3.4 4.5. Connection Pro ocedures • The e DC voltage e on the con nductors co onnecting th he PV array to the inputt of the inve erter must have h a maximum rating g of 600VDC at any operrating temp perature. • The e DC conduc ctor must be e sized for correct c tem mperature ra ating and sunlight resistance. Use e copper co onductors be etween 10 A AWG and 6 AWG / 6 mm m2 and 2 16m mm and tem mperature rating r of 194°F / 90°C ffor all conne ections. • Folllow the safe ety instructtions and sp pecificationss from the m module man nufacturers reg garding insta allation. • Terrminate the ungrounde ed conducto ors at the te erminal block labeled 1.. Ung grounded, and a tighten the screws by applying g 1.11 ft-lbff / 1.5 Nm o of torque. • Terrminate the grounded conductors c at the term minal block la abeled 2. Grrounded, and d tighten the screws by y applying 1.11 ft-lbf / 1.5 Nm of ttorque. NOTICE PV systems with GFDI G that inc corporate th he system g grounding c connection must not n have an additional grounding g co onnection. 4.3.4 4.6. Reverrsed DC Co onnection n If the e positive an nd negative terminals are a reversed d during con nnection, th he inverter will not n start. Th he inverter will w not be damaged du e to interna al reverse bllocking diode es, but high currents arre generated in the con nductors. DANG GER Be awa are of high currents! c If the t DC term minals are re eversed duriing installa ation, high currents c are e generated in the cond ductors, whiich can pose shock hazard ds. cedure Proc • Turrn OFF the AC A circuit bre eaker(s) and d the DC sw witch. DANG GER The PV V conductors are still ch harged afte er the DC sw witch on the Stringbox is turne ed OFF, due to power fe eeding PV m modules. Alw ways turn O OFF the remote e DC switch and wait un ntil the PV m modules do not feed po ower. • Rem move the PV V connectorrs • Che eck if the te erminals are discharged d by using a voltmeter. • Disc connect the e conductorrs from the terminal blo ock. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 35 5 • Rec connect the e conductors s to the corrrect termin nal block. • Tes st the polarity using a voltmeter v be efore turnin ng ON the DC C switch an nd the AC circ cuit breakerr(s). 4.3.4 4.7. Jump per Positio on for Systtem Groun nding Setu up The jumper abov ve the - NEG G terminal block in the iinverter low wer comparttment monitors the arrrangement of o the DC co onnection a ccording to o the ground ding setup. The jumper is po ositioned forr a negative e grounded PV string c configuration. ending on th he grounding g requireme ents from th he module m manufacture er the Depe jumper must be repositione ed. In cas se of a mism match in gro ounding setup the follo owing messa age will app pear in the displa ay: “Fuse fa ault”. Refer to t 7.2 Table e of Events Table 4.2: Jumper position for the e DC grounding g configuration n Inve erter lower compartme ent Top view v Systtem Neg gative groun nded PV con nfiguration:: The jumper sho ort-circuits tthe two righttmost pins ((default). Posiitive ground ded PV Conffiguration: The jumper sho ort-circuits tthe two leftm most pins. 1. Ju umper monitorring the ground ding setup. 4.3.5 5. AC Co onnections (Grid)) The AC A connectiion includes s wiring from m the AC disstribution pa anel through one or more e circuit brea akers to the e AC termina al block of tthe inverterr (refer to 4..3.2 Conn nection Area a). Veriffy that the AC A grid para ameters are compatible e with the in nverter spec cifications beforre connectin ng the inverrter to the grid: g • Sing gle phase 240VAC/120V VAC • Sing gle phase 208VAC/120V VAC WYE • Frequency rang ge: 55.0 to 63.0 Hz NOTICE The TH HEIA HE-t UL L inverter prrovides a vo oltage outpu ut range fro om 184 VAC to 276 VAC. 36 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 CAUT TION The AC C output / Neutral N of th he inverter iss not bonde ed to ground d. WARN NING To redu uce the risk k of fire, do not n connectt to an AC c circuit break ker panel having multi-wire branch b circu uits connec ted. DANG GER Turn OFF the AC circuit breaker(s) and th he DC switch h before con nnecting the inv verter to the e grid to pre event electrrocution. AC po ower system ms are foun nd in both co ommercial/ industrial an nd residential/office applications. Pha ase power systems s usu ually have tthree conductors: Table 4.3: The differrent AC condu uctors Term m (Abbr.) Descriptio on Phas se conductor (L1/L2) The ungrou unded condu uctors, which carry curren nt to the load. A circuit co onductor carrrying the unb balanced currrent of the ungrounde ed conductors. An electric cal path to grround, design ned to carry ffault current. Neutral conducttor (N) nd Equiipment groun cond ductor (GND)) These three con nductors are e connected d to the serv vice entranc ce panel. Th he typical hase is prov vided by con nnection of either L1 an nd N or L2 a and N. L1 120 VAC single ph and L2 L provide 240 2 VAC whille L1 and N or L2 and N provide 12 20 VAC. 120 VAC loads must be distrributed even nly between n L1 and L2 to keep the e system in balan nce. Also, by y connecting to a three e-phase sys tem the loa ad must be d distributed evenly between the three phases. p NOTICE Single phase inverrters connec cted to a th hree phase p primary pow wer source must not n significantly increas se unbalanc ced system voltages. 4.3.5 5.1. Connection Pro ocedures Depe ending on su upply voltag ge configura ation the co onnections to the inverter must b be perfo ormed differrently. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 37 • The e current ca arrying conductors on the AC side m must be ratted for the c current and 2 be maximum 6 AWG /16 mm m . Ensure e complianc e with electtrical regula ations! • The e current ca arrying conductors on the AC side m must be ratted for the a appropriate currrent and vo oltage. Ensure complian nce with the e state and federal elec ctrical reg gulations! • The e AC conduc ctors must be b between n 10 AWG an nd 6 AWG / 6 mm2 and 16mm2 and d with a tempera ature rating g of 194°F / 90°C for all connection ns • When selecting g AC conduc ctors, resisttance shoulld be minimiized by sele ecting a larg ger size of conductors. c • Folllow the safe ety instructtions and sp pecificationss from the c conduit man nufacturers reg garding insta allation. • Terrminate the conductors s to the corrresponding terminals in n the connection area. • Tigh htening torq que of the terminal t screws is 1.5 N Nm / 1.11 ftt-lbf. • Che eck that the e connection n is perform med correctlly. w Neutrall Single Phase with 240 0 VAC phase to t phase 120 0 VAC phase to t neutral 240 VAC phase to ph hase 120 VAC phase to ne eutral 208 8 VAC phase to t phase 120 0 VAC phase to t neutral 38 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 Figure 4.16: Connections for f single phasse with neutra al • Terrminate the line 1 cond ductor at the e terminal la abeled L1 on the AC terminal block k in the t right side of the inverter lower compartme ent. • Terrminate the line 2 cond ductor at the e terminal la abeled L2/N N on the AC terminal block in the rig ght side of the inverter lower comp partment. • Terrminate the neutral con nductor at the t termina l block labeled N-N in riight side of the e Stringbox. • Terrminate the equipmentt ground con nductor at tthe groundiing bar in th he lower righ ht side of th he Stringbox x. • Con nnect the bo onding stra ap (white or grey colore ed) between n the flat re eceptacle labeled N abov ve the N-N terminal t block in the Sttringbox and d the unmarrked rec ceptacle to the t right of the DC grou und termina al in the inve erter lower com mpartment. This is to monitor m the voltage v bettween the p phases and n neutral. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 39 Single Phase with w no Neuttral 0 VAC phase to t phase on nly 240 208 VAC p phase to ph hase only Figure 4.17: Connections for f Delta grid w with no neutra al • Terrminate the line 1 cond ductor at the e terminal la abeled L1 on the AC terminal block k in the t right side of the inverter lower compartme ent. • Terrminate the line 2 cond ductor at the e terminal la abeled L2/N N on the AC terminal block in the rig ght side of the inverter lower comp partment. 40 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 • Terrminate the equipmentt grounding conductor at the grou unding bar in n the Stringbox. a: Corner Grounded G Delta 240 0 VAC phase to t phase on nly C phase to p phase only 208 VAC Figure 4.18: Conne ections for Dellta corner grou unded and Dellta Wye User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 41 • Terrminate the line 1 cond ductor at the e terminal la abeled L1 on the AC terminal block k in the t right side of the inverter lower compartme ent. • Terrminate the grounded phase p condu uctor at the e terminal la abeled L2/N N on the AC term minal block in the rightt side of the inverter low wer comparrtment. • Terrminate the equipmentt grounding conductor at the grou unding bar in n the Stringbox. • Con nnect the grrounding sttrap (green and yellow colored) be etween the fflat rec ceptacle lab beled PE to the t left side e of the AC tterminal blo ock and the unmarked rec ceptacle to the t right of the DC grou und termina al in the inve erter lower com mpartment. This is to monitor m the voltage v bettween groun nd and the g grounded pha ase. 4.3.6 6. Network Conn nections The inverter is equipped witth three com mmunicatio n interfacess: Ethernet, CAN, and RS-48 85. Etherne et provides communica c tion betwee en the integ grated web--server and a comp puter, either directly co onnected orr via a route er/switch. CA AN allows comm munication between se everal invertters. RS-485 5 allows com mmunicatio on with certa ain third party equipment. 1. Client inverter 2. Mas ster inverter 3. CAN N bus cable 4. Ethe ernet cable 5. RS-4 485 cable 6. Com mputer 7. Data a logger Figu ure 4.19:Connection without network 4.3.6 6.1. Connection Pro ocedures If sev veral inverte ers are conn nected toge ether, all inv verters mustt be connec cted to the CAN bus prior to o the Start Up U procedurre to benefitt from singlle installatio on setup. 42 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 Figure F 4.20: Ne etwork connecction 1. CA AN bus terminal 2. RS S-485 termin nal 3. Ethe ernet port 4. Cablle gland • Eth hernet: Use CAT5 or better, with siize 24 AWG / 0.21 mm2 and a maximum total leng gth of 100 m. m • CAN: Use a cable size of 26 2 AWG / 0.13 mm2, witth a maximu um total len ngth of 500 m. • RS--485: Use a cable size of o 26 AWG / 0.13 mm2, with a max ximum total length of 120 00 m. • Terrminate the cables at th he terminals s in the con nnection are ea as follows s: - Ethernet: - CAN: - RS-485: Plug the t Etherne et cable dire ectly into the e RJ45 portt. The conductors c must m be terrminated to the same la abeled terminals at both h ends: i.e. H connected d to H, L to L etc. Apply ying 0.15 ft--lbf / 0.2 Nm m of torque. The conductors c must m be terrminated to the same la abeled terminals at both h ends: i.e. A connected d to A, B to B etc. apply ying 0.15 ft-lbf / 0.2 Nm m of torque tto tighten. • Tighten the co onduit fitting gs firmly. CAN B(+) A(-) GND B(+) A(-) GND H L COMGND H L COMGND R RS-485 Figure 4.21: CAN and d RS-485 conn ection pin-outt User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 43 3 4.3.6 6.2. Jump per Positio on for Term mination R Resistance e When n several inv verters are connected, the jumperr located be ehind the CA AN / RS-485 5 terminals activates the term mination res sistance wh hen the pinss are terminated (short-circuited). This minimizes m sig gnal reflecttions in the c cables and helps to avo oid interfference. • Sing gle inverterr: The two pins p can be terminated t ected. or disconne • Sev veral inverters connectted: The ma aster-client configuration requires terminated d pins s on the firs st inverter and a on the la ast inverterr in the linke ed series. Th he pins must be open on the e inverters between b the e first and la ast inverterr in the linke ed series. • To disconnect d the pins the e jumper mu ust be pulle ed up and pla aced only on one of the e pins s. • Be careful not to bend the e pins when removing o or installing the jumper! Table 4.4: Jumper position for the e termination resistance r Con nnection Are ea Jumper Position Pins The pin ns are terminated. The pin ns are discon nnected. 1. CA AN termination n resistance 2. RS S-485 termination resistance e 44 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 4.3.7 7. Check ks before e Start Up U ; Moounting: ; ; ; ; ; ; ; ; ; at the brack ket and the inverter are e correctly m mounted an nd secured. - Check tha PV V wiring: - Check tha at the PV ca ables are rated for the PV current and for the expected environm mental conditions. - Check tha at the wiring g is perform med accordin ng to local a and federal electrical regulations. Connection: - Check tha at the PV co onductors are a correctly y torqued to o the DC terrminals. - Check tha at all connectors and cable glandss are correcttly tightene ed and sealed. DC side: at the PV op pen-circuit voltage, v VOC , does not e exceed 600 VDC - Verify tha - Check tha at the DC po olarity is corrrect. AC side: at the AC co onductors on o are correc ctly connec cted to the A AC - Verify tha terminals s. Grounded co onductors: - Check tha at the equip pment groun nding condu uctors are p properly size ed, and not fused or switched. s Ju umpers: - Check tha at the jumpers for the grounding g ssetup and fo or the termination resistanc ce are correc ctly position ned. Disconnects: - Verify tha at all curren nt-carrying conductors c on both the e DC and AC C side can be e disconnected, and th hat the brea akers and D C disconnec cts are loca ated correctly and are eas sily accessib ble. Overcurrent protection: at the overc current prottection on b both the DC and the AC side are - Verify tha sized correctly, and capable c of being b chang ged withoutt touching live contacts s. In nverter cove er: - Ensure th hat no cable es interfere with the se aling of the e inverter low wer cover, and faste en the coverr firmly to th he housing. Recommen nded tighten ning torque is 1.0 Nm / 0.74 ft-lb bf. CAUT TION Verify that t the low wer cover is correctly tiightened, so o that no moisture enters the housing g and damages the ele ectronic com mponents. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 45 5 5. START S T UP This chapter c pro ovides instru uctions to ensure a saffe start- up o of the THEIA A HE-t UL inverrters. A minimum voltag ge of 184VAC , and 230V V , and a po ower greate er than 7WDDC A DC is req quired from the PV systtem before the THEIA H HE-t UL-t inv verters starrt-up and begin n feeding po ower to the grid. Do nott attempt to o start up o or commissio on the inverrter if one off the voltag ge sources is s not availa ble AC Side S • Turn ON the AC circuitt breaker(s). DC Side S • Turn ON the DC switch h(es). 5.1. Initial I Start S When n the inverter is started d for the firs st time, an i nstallation menu is auttomatically displa ayed to ena able the con nfiguration of o certain va alues and op perational s settings. 5.1.1 1. Custo omizing the t Inverrter Setttings Single Inverter • When both the e DC and the e AC disconn nects are tu urned ON an nd the inverrter is sup pplied with enough e pow wer, the insttallation me nu is display yed on the L LCD screen.. Mult tiple Inverte ers Connec cted 1. CA AN • Con nnecting all inverters viia the CAN bus b enabless the configuration of a all inverters in a plant via one inverter.. The Start Up U can then n be carried out on any inverter, and d if configured as the master m inverrter the conffiguration ssettings of ttime, date, lang guage and grid g setting gs will be tra ansferred to o all the othe er client inv verters on the e network. • Eac ch client inv verter is auto omatically assigned a an n ID number from the m master during g Sta art Up. NOTICE If multiiple inverterrs are conne ected togetther, all inve erters must be connec cted to the CAN bus, an nd receiving g sufficient AC and DC p power, before Start Up to o benefit fro om single insstallation se etup. 46 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 2. RS S-485 • Con nnecting the e inverters via v the RS-4 485 bus ena ables comm munication w with certain 3rd party equipment. In an RS-485 nettwork, the 3 rd party equ uipment willl act as a master, while all a inverters s will become clients. • Eac ch inverter must m be ass signed an ID number, a bit rate num mber and a p parity num mber manua ally: - The ID number must be between n 1 and 247 7. - Both the master inve erter and th he client inve erters requiire a bitrate e number and a parrity number.. - Determine the setup p in the 3rd party p equipm ment (e.g. an n external d data logger) an nd program these numbers in the iinverter by accessing tthe network menu m on the e inverter display. Refe er to section n 6.2.3.2 Ne etwork Setup forr further dettails. Default bitrate: 1920 00 Default parity: even • The e RS-485 co ommunicatio on is complia ant with Su nspec Modb bus specific cations. 5.1.2 2. User Interface I e The User U Interfa ace on the frront of the inverter i con ntains a LCD D screen, three LEDs and six s function keys. 5.1.2 2.1. LCD Screen S To na avigate in th he LCD screen the six function key ys must be u used. By sellecting one of the seven item ms in the Main Menu, a further nav vigation thro ough differe ent subm menus is pos ssible. There e are four different me nu levels. Home,, Status, Eve ent Log, Stattistics: The infformation an nd values are e read-only. Setup p, Commandss, Alarm Setu up: The infformation an nd values can n be modifiied. Figurre 5.1: LCD scrreen interface Padlock: Opens O up when w correctt password is entered. Lines: Num mber of highlighted line es indicatess the curren nt menu/sub bmenu level, with h the top lin ne being the e first level ((Main Menu)). • To activate the e display wh hen the scre een saver iss active (bla ank), press a any key. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 47 5.1.2 2.2. LEDs There e are three LEDs next to t the displa ay screen. T The upper on ne is red, th he middle is yellow and the lo ower one is green. Table 5.1: LEDs. Sym mbol LED Func ction Action Red Malffunction! Inve erter in shuttdown mode Look ffor alarms in A Active Alarmss Green n& Yellow Cauttion! Inverter still operate es, but at a a limited le evel Look ffor warnings in Active e Alarms Green n NO ONE Yellow Operrates; inverte er feeds pow wer to th he grid Inverrter is OFF (Power < 7WDC) No acttion No acttion 5.1.2 2.3. Funct tion Keys The function f key ys have the following uses: u Table 5.2: Function keys Sym mbol Functtion Symbol Function n Up: Sc croll up / incrrease value Right: Na avigate one p page or value e right Down: Scroll down n / decrease value Enter: Se elect option / go to next level Left: Navigate N one e page or value left Cancel: S Stop operatio on / back to previous menu item • The e selected ittem is alway ys highlightted in yellow w. • A re egistered to ouch of a bu utton causes a “click” s ound to be heard. 5.1.3 3. Start installattion At firrst power-up p, and with sufficient AC A power, th he display s hows the Start Insta allation screen. 48 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 1. St tart Left – Cancel Rightt – Ok Enterr – Confirm 2. La anguage Se election Defa ult – English Enterr – Call up the list of languages Up orr Down – Nav vigate throug gh the list to fin nd the preferred language e; English; Span nish; etc… Enterr – Confirm Rightt – Next Enterr – Confirm 3. Tim me Format t Defau ult – 12 h at list Enterr – Call up the time forma Up orr Down – Sele ect the time format; 12h, or 24h Enterr – Confirm Left – Back Rightt – Next Enterr – Confirm User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 49 4. Da ate DD.M MM.YYYY Enterr – Call up the date Up – Increase present digit Down n – Decrease e present digiit Left – Select prev vious digit Rightt – Select nex xt digit Enterr – Confirm Left – Back Rightt – Next Enterr – Confirm 5. Tim me HH.M MM Enterr – Call up the date Up – Increase pre esent digit n – Decrease e present digiit Down Left – Select prev vious digit Rightt – Select nex xt digit Enterr – Confirm Left – Back Rightt – Next Enterr – Confirm NOTICE The tim me setting must m match the time on n the actual installation n site; otherw wise data ma ay be overw written! 6. Se et Bus ID Enter – Call up the e digits Up – In ncrease pressent digit Down – Decrease p present digitt Enter – Confirm Left – Back Right – Next Enter – Confirm 50 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 If RS4 485 commu unication is used, u set a unique bus ID for the in nverter. For any client inverrters, this will be require ed to be sett manually u under Setup p > Network k Setup > Bus ID (RS485). If RS485 co ommunicatio on is not use ed, this step p can be missed. 7. Se et as Maste er Unit Defa ult – No Enterr – Call up th e options Up – Yes n – No Down Enterr – Confirm Left – Back Rightt – Next Enterr – Confirm e inverter is set to mastter, data mu ust be colle cted from tthe client inv verters. The e If the follow wing screen n will be disp played: 8. Grrid Configuration (Earrthing Systtem) Enter – Call up the e list of grid config gurations Up or D Down – Selec ct the grid co onfiguration of the actual installation site: TN/TT T, IT, Undefine ed Enter – Confirm Left – Back Right – Next Enter – Confirm User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 51 9. Fe eeding Phas se Enter – Call up the e list of phase es Up or D Down – Selec ct the preferrred phase: - If con nfigured for T TN/TT: Not s set, L1, L2, L3 3 - If con nfigured for IT: Not set, L1-L2, L1-L3, L2-L3 3 Enter – Confirm Left – Back Right – Next Enter – Confirm If the e inverter is set to mastter, and the ere is more tthan one inv verter in the e plant, the follow wing screen n is displaye ed: e inverter is configured as master: step throug gh and set tthe feeding phase (L1, If the L2, L3 3, L1-L2, L1-L3, or L2-L3 as require ed) for all cliient inverters. G Code 10. Grid Ente er – Call up th he list of grid conffigurations Up o r Down – Sellect the grid setting of the a actual installation site: Co ont 240 D: No N N; Cont 240D:: 120spl; HI 2 208 D: 120Y; HI 20 08 D: C gr; etc c. Ente er – Confirm Left – Back Ente er – Confirm 52 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 Due to t the limita ation in the number of characters c tthat can be displayed o on the scree en the grid codes c have been shortened from ttheir full nam mes. Please e see below w for a reference list of the ab bbreviations s to relevan nt full namess: Table 5.3: Grid code e abbreviation Abbrreviation Full name Cont 208D: No N. Continentall North Amer ica 208V Dellta with No Neu utral Cont 208D: 120Y Continentall North Amer ica 208V pha ase to phase with 120V phase to Neutral Cont 208D: C.gr Continentall North Amer ica 208V Dellta with Cornerr Grounding Cont 240D: No N. Continentall North Amer ica 240V Dellta with No Neu utral p Cont 240D: 120sp Continentall North Amer ica 240V pha ase to phase and 120V 1 split ph hase and Neu utral Cont 240D: C.gr Continentall North Amer ica 240V Dellta with Cornerr Grounding 08D: No N. HI 20 Hawaii state e 208V Delta a with No Neu utral HI 20 08D: 120Y Hawaii state e 208V phas e to phase w with 120V phase e to Neutral HI 20 08D: C.gr Hawaii state e 208V Delta a with Cornerr Grounding HI 24 40D: No N. Hawaii state e 240V Delta a with No Neu utral HI 24 40D: 120sp Hawaii state e 240V phas e to phase and 120V split phase p and Ne eutral HI 24 40D: C.gr Hawaii state e 240V Delta a with Cornerr Grounding Grid Code Selec ction User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 53 3 If Grid d Code settting fails and d the grid co ode is not co orrectly sett, the follow wing window w is dis splayed: With inverters co orrectly con nnected in a Master/Cliient configu uration a ‘Wa arning’ box is displa ayed if an error e occurre ed during ins stallation: ning Box Warn Possib ble errors: 1. No communicattion 2. Wroong grid settings 3. Suffficient DC p power is unav vailable on con nnected clien nts inverters • Loo ok at the dis splayed men nu and the LEDs L on the e inverters: It is not carrried out corrrectly if the e installation n menu is sttill displayed d and/or the e green LED D is not lit and d the yellow w and red LEDs are lit. • If th he Start Installation scrreen is still shown, s run through the e installatio on process on the t individu ual nverter. CAU UTION • An installation timer ensure es that the g grid settingss can be cha anged (using g the Owner password)) within 5 ho ours of feed ding power tto the grid. There eafter it is only o accessiible using th he Installer p password, w which may only be b obtained d for installe ers and grid operators b by contactin ng Eltek. • The selected s grid d configurattion must m match that o on the actua al installation site; otherwise the t inverterr may not op perate or be e compliant to rellevant state e and federa al electricall regulationss due to incorrect limit value es. The following f sc creen is disp played while e inverter se ettings are b being updatted: 54 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 11. Screen S Timeout Enterr – Call up the digits Defa ult – Screen backlight turns OFF afterr 60 sec Left – Back Rightt – Next Enterr – Confirm NOTICE The low west value allowed a to be b set is 30 sec, and th he highest is s 99 sec. Setting g the value to t 0 disable es the scree en timeout a and leaves tthe screen backlig ght ON at all times. 12. Customer C Name N Enterr – Call up the keyboard The k keyboard ena ables typing a text entry y. Left – Back Rightt – Next Enterr – Confirm In som me of the submenus th he settings must be typ ped using th he function keys: Lettter keyboarrd Num mber keyboa ard User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 55 5 Table 5.4: Available symbols in the keyboard Symbol Description Symbol Description n Uppe er- or lower-c case letter Confirm cha anges and ex xit the menu Point Clear the ty yping field ce Spac Go back witthout saving changes Canc cel last letter Go to the Le etter keyboard Go to the Nu umber keybo oard • Entter must be pressed until the wantted letter/n number/sym mbol is show wn. • It is s possible to o navigate between b the e characterss by using tthe Up arrow w to set the e marker into the e text window, then us sing Left and d Right to navigate bettween the cha aracters. • The ere is a maximum space e for 19 cha aracters in tthe text win ndow. 13. Site S Enterr – Call up the keyboard The k keyboard ena ables typing of a site name e. Left – Back Rightt – Next Enterr – Confirm 14. Unit U Name Ente er – Call up th he keyboard The u unit name he elps to disting guish and identtify specific inverter in a llarger plant. Left – Back Righ t – Next Ente er – Confirm 56 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 15. Message M Enterr – Call up the keyboard This m message fielld is to help d distinguish and id dentify specific inverters s in a large er plant, or otther informattion. Left – Back Rightt – Next Enterr – Confirm 16. Owner O Pass sword Enterr – Call up the digits Defau ult – 0003. Chan nge the passw word to 4 opttional digitss NOTIICE This p password is n not transmittted to otherr inverters on n the CAN bu us on GUI firmw ware revisions below v1.3 32. Left – Back Rightt – Finish Enterr – Confirm NOTICE With se everal inverters connec cted it mustt be checke ed that the installation is been n carried outt correctly on o all the cliient inverte ers. • Look at the displlayed menu u and the LE EDs: It is nott carried outt correctly iff the in nstallation menu m is still displayed a and/or the g green LED is s not lit and d the yellow y and re ed LEDs are e lit. • Check that the connection c of o the CAN cables are c correct, tha at the AC and DC D switches s are ON, tha at the volta ages are >18 84 VAC and 2 230 VDC and there t is a greater than 7 WDC of pow wer. • If the e Start Up ph hase is correctly carrie ed out the in nverters are e ready to use. They T are fullly automattic during no ormal operattion, and no o manual contrrol is necess sary for feeding power into the griid. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 57 6. OPERA O ATION N This chapter c des scribes how w to operate the menuss in the LCD screen with h the functtion keys orr with a PC connected c to t the embe edded websserver. Pleas se refer to 5.1.2. 5 User In nterface forr a descript ion of the L CD Screen a and the mean nings of the e colored LEDs 6.1. Access A s Levells and Passwo P ords There e are three access leve els to the diffferent sub menus: Table 6.1: Password d access levels s Password Acc cess Guest Own ner Insta aller Rea ad only acces ss to all value es. Rea ad and write access to alll values and sset levels ex xcept the insttaller rela ated values. The T default Owner O passw word is 0003.. This passwo ord can be cha anged by nav vigating to: Setup>Genera al Setup>Passsword. If th he password is lost or forrgotten, pleasse contact E Eltek to obtaiin a new pas ssword. Rea ad and write access to alll levels and sset values. Th he Installer password is bas sed on the inv verter serial number. If th he password is lost or forg gotten, plea ase contact Eltek to obta ain a new passsword. It willl require the inverter serial number. NOTICE Any ch hange of settting needs a password d. Once the password h has been entered, modificattions must be b done witthin 1 minutte before th he access resets to Guest level. 6.2. LCD L Sc creen Menus M To na avigate in th he LCD screen the six function key ys must be u used. By sellecting one of the seven item ms in the Main Menu, a further nav vigation thro ough differe ent subm menus is pos ssible. There e are four different me nu levels. 58 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 Home,, Status, Eve ent Log, Stattistics: The infformation an nd values are e read-only. Setup p, Commandss, Alarm Setu up: nd values can n be The infformation an modifiied. Figure 6.1: LC CD screen inte erface Padlock: Opens O up when w correctt password is entered. Lines: Num mber of highlighted line es indicatess the curren nt menu/sub bmenu level, with h the top lin ne being the e first level ((Main Menu)). • To activate the e display wh hen the scre een saver iss active (bla ank), press a any key. 6.2.1 1. Home e Home is the stan ndard displa ay, which is always sho own if no butttons are to ouched within the screen timeout in nterval, which is set du uring installa ation (minim mum 30 sec, maximum 99 sec c, or OFF). If the e unit is set as master, the t default menu conttains status/mode information of the whole w plant.. Single Inverter Valuess of PV (DC) a and feed-in (A AC) current, voltag ge and powerr are shown n numerically. The in stantaneouss output pow wer is shown as a ba ar graph. Figurre 6.2: Standarrd display for a single invertter User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 59 PV Plant Plantt values of fe eed-in (AC) cu urrent and volta age for each phase, and a active power for a ll phases are e shown num merically. The curre ent output po ower is show wn as a bar grap h. Figurre 6.3: Standarrd display for a larger PV pla ant t scroll ke eys to obserrve daily, monthly and y yearly value es: Use the Up or D Down – Navig gate in the screen. Left orr Right – Obsserve the daily, monthly and to otal yearly va alues of : • Enerrgy harvest [W Wh/kWh] • Peak k power [Wp] • Earn ning [value off the respecttive country] • Avoi ded CO2 emisssion [kg]. Figurre 6.4: Energy harvest throu ughout the day y 6.2.1 1.1. Uppe er Display Area A The left l section shows the status of th he inverter. Refer to Ta able 6.2 for the three different status options. It is also a sho ortcut to the e Active Ala arms. The middle m secttion shows the t operatio on mode. Re efer to Table e 6.3 for the e eight different modes options. r sectio on shows the e serial num mber of the inverter, wh hich is also tto be found The right on th he product label. 60 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 Up o r Down – Nav vigate in the screen. er – Confirm Ente Figurre 6.5: Upper display d area off the home scrreen Table 6.2: Inverter status s Sign n Status s LEDS Normall: inverter ope erates with no n warnings o or alarms Green Warning g: inverter sttill operates, but there is a warning Green& &Yellow Alarm: inverter in sh hutdown, the ere is an alarm m Red Info: inv verter still op perates, but there t is addittional informa ation availablle Green& &Yellow Table 6.3: Inverter mode m Sign n Mode Off: Inp put power is not n sufficientt to start the e power conttrol circuitry y Sleepin ng: automatic c shutdown. Input power is not sufficient to startt up LEDs Yellow w Yellow w Start-U Up: initialization of input values v and grrid conditionss Green & Yellow Running g: grid feedin ng Green De-ratin ng: output po ower is reduc ced to protec ct the inverte er againstt overheating g Green & Yellow Shuttin ng Down: inve erter in shutd down mode Yellow w Shutdo own: inverter/ /system failu ure or unstab ble operation nal conditio ons Red Service e Mode: inverrter can be manually m overrridden Yellow w User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 61 6.2.1 1.2. Lowe er Display Area A The lower sectio on contains a shortcut to t the Main n Menu and sshows the c current date e and time. t Up or Down – Nav vigate in the s screen. Enterr – Confirm Figurre 6.6: Lower display d area off home screen 6.2.2 2. Statu us Statu us displays the t operatin ng mode an nd status off the inverte er and the PV plant. All the values v are re ead-only. Up o r Down – Nav vigate throug gh the menus subm Ente er – Select a ssubmenu/co onfirm Figure 6.7: Submenus S of Status S 6.2.2 2.1. Activ ve Alarms Activ ve Alarms diisplays deta ailed informa ation aboutt the currentt operating mode - and d statu us signs app pearing in th he upper lefft corner of tthe Home sscreen. Refe er also to 7.2 2. Table e of Events. 62 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 6.2.2.2. Inverter Status Inverter Status displays the operating mode, status and operating parameters of the inverter. Inverter Mode Inverter Error Input Parameters Output Parameters Inverter Peak Power Energy produced today Temperature Isolation Resistance Operating Hours Apparent Power (VA) Extended Status 11 Extended Status 21 The inverter has 8 different modes. Refer to Error! Reference source not found. The inverter has 3 different status levels. Refer to Error! Reference source not found. Current, voltage and power fed from the PV modules to the inverter Current, voltage, frequency and power fed from the inverter to the grid Highest power achieved throughout the day Total energy harvest throughout the day Temperature inside the inverter Level for a safe insulation between DC - and AC side to prevent injury or equipment failure. The resistance should be minimum 600 kΩ Total inverter running time from Start Up The product of voltage and current from the inverter [VA] 0xZZZZ (hexadecimal code for diagnostics/service) 0xZZZZ (hexadecimal code for diagnostics/service) 1. Extended Status codes are available from GUI revision 1.41 onwards. 6.2.2.3. Plant Status Plant Status displays the operating mode, status and operating parameters of the PV plant, if there are other inverters connected, and the inverter has been set as the master unit. Plant Mode Plant Status (Error) Number of inverters Number of active inverters Number of inverter alarms Number of inverter warnings Input Current Input Power Output Power Energy produced today The plant has 8 different modes. Refer to Error! Reference source not found. The plant has 3 different status levels. Refer to Error! Reference source not found. Total number of inverters in the plant Number of active inverters in the plant Event alarms in the plant Event warnings in the plant Total current from the PV modules to the inverters Total power from the PV modules to the inverters Total feed-in power to the grid from all active inverters Total energy production throughout the day for the plant Phase Values Phase Values displays the inverter’s various feed-in parameters for the different grid phases. Output current (L1) Output voltage (L1) Output power (L1) Value of current fed into phase 1 Value of voltage fed into phase 1 Value of power fed into phase 1 User Manual THEIA HE-t UL String Inverters 357116.013, Issue 2.0, April 2013 63 Outp put current (L2 2) Outp put voltage (L2) Outp put power (L2)) Value of curre ent fed into ph hase 2 Value of volta age fed into ph hase 2 Value of powe er fed into pha ase 2 Outp put current (L3 3) Outp put voltage (L3 3) Outp put power (L3)) Value of curre ent fed into ph hase 3 Value of volta age fed into ph hase 3 Value of powe er fed into pha ase 3 6.2.3 3. Setup p Setup displays settings s and d data from the inverte er, the grid a and the PV p plant. Up or D Down – Navig gate through h the subme enus Enter – Select a su ubmenu/conffirm Figure 6.8: Submenus S of Setup S 6.2.3 3.1. General Setup Gene eral Setup displays som me of the general param meters of th he inverter, w which can a all be ch hanged usin ng the Owne er password d. Lang guage Time e format Date e Time e Time e zone Pass sword CO2 Rate R Earnings Rate Earnings Currency y Screen Timeout Powe er Saving during night time e 64 The preferred d language mu st be set durin ng installation n: English [default], Germ man, Spanish, French, Italian n, etc. The time form mat must be se et during insta allation: 24 h [d default], 12 h. Current date must m be set d uring installattion Current time must m be set du uring installation Used to define the time zon ne used for FTP data upload Owner password must have e 4 digits. Defa ault is 0003 Avoided CO2 emissions, e bassed on 0.7 kg/ kWh Feed-in tariff in the respecttive country Valid currency y in the respecctive country ON time for th he display bac klight Power saving can either be ON or OFF durring nighttime. Enabling this option turns the t GUI off 15 minutes afterr the inverter e enters OFF mode, ie. nigh ht time, to save e power. Only applicable forr client inverters User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 6.2.3 3.2. Netw work Setup p Netw work Setup displays d the e settings fo or the conne ected netw work, which c can all be changed with th he Owner pa assword. Reffer to 6.3 C Connection b between Inv verter and PC. NOTICE All IP addresses re elated to the e inverter a nd web musst be config gured within n the ran nge that is allowed a by the t local nettwork. Netw work IP-Address [Stattic/DHCP] Netw work Subnet Mask M Netw work Gateway y DNS server IP Bus ID I (RS-485) RS48 85 bitrate RS48 85 parity Bus ID I (CAN) Set as a Master unitt Unique netwo ork address forr the inverter Indicates whe ether the IP ad dress is static c or dynamicallly assigned Determines what w subnet th he IP-address b belongs to Network pointt acting as enttrance to anotther network The DNS IP ad ddress The inverter’s s identification n number on th he RS-485 bus Measurementt of data transsmitted in a giv ven amount off time [bps] Error detectin ng code: A bit tthat ensures a an odd or even n number of bits in a set off bits with valu ue one. Selecttion: None, Od dd, or Even The inverter’s s identification n number on th he CAN bus Several invertters connected d together in a power control and monitoring sy ystem, must ha ave one maste er inverter and d the rest must be client inverters. 6.2.3 3.3. Inverter Setup Inverrter Setup displays the various datta for the sp pecific inverrter set during the manu ufacturer prrocess, and is read-only y. Mode el Seria al Number Inverrter Part No. Inverrter Revision GUI Software S Partt No. GUI Software S Reviision GUI Hardware H Partt No. GUI Hardware H Rev vision SW1 Part No. SW1 Revision SW1 CS SW1 BL Part No. SW1 BL Revision SW1 BL CS Conttrol Board Partt No. Conttrol Board Rev vision Main n Board Part No. Main n Board Hardw ware Re evision SW2 Part No. Inverter mode el Unique identiffier for each in nverter. Also to o be found on the product label Identifier for each e inverter h hardware conffiguration with hin Eltek Unique version name for ke eeping track off the developm ment of within Eltek different inverter revision w The GUI1 softw ware part num mber. Revision numb ber for the GU UI software Identifier for the t GUI-card h ardware Revision numb ber for the GU UI hardware The DSP12 sofftware part nu umber. Revision numb ber for the DS P1 software The DSP1 softtware checksu um The DSP1 boo otloader softw ware part numb ber Bootloader re evision numberr for the DSP1 software The DSP1 boo otloader softw ware checksum m DSP-card hard dware part num mber Version name e for the DSP ccontrol card ha ardware Identifier for the t PCB3 hardw ware. Unique revisio on number for keeping track k of the develo opment of different main n board revisio ons The DSP2 softtware part num mber User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 65 5 Revision number for the DSP2 software The DSP2 software checksum The DSP2 bootloader software part number Bootloader revision number for the DSP2 software The DSP2 bootloader software checksum SW2 Revision SW2 CS SW2 BL Part No. SW2 BL Revision SW2 BL CS 1. GUI = Graphical User Interface, which allows interaction with the inverter through the display. 2. DSP = Digital Signal Processing, which is a microprocessor controlling the power conversion in the inverter. 3. PCB = Printed Circuit Board, which hosts all the components and subsystems of the inverter. 6.2.3.4. Plant Setup Plant Setup displays useful information about the PV plant, which can be changed using the Owner password. Company/Customer Name Site Installation Date Service Date Responsible Unit Name Message Plant Apparent Power The customer / owner name The site name May be used for setting the install date May be used for setting the most recent service date Field for keeping a note of the company/person responsible for service This text string is displayed in the master unit’s list of connected inverters An extra message field for additional notes The product of voltage and current from the entire PV plant [kVA] 6.2.3.5. Grid Setup The Grid Setup displays the grid settings based on the selected country. The settings can be changed within 5 hours after the installation using the Owner password. Thereafter it is only accessible by using the Installer password, which will only be available to the installer by contacting Eltek. Field Adjustable Trip Limits The system installer may change the grid settings according to electrical regulations. The Installer password is needed to change these settings. 1. Voltage 208 VAC Delta: No Neutral, 120 WYE, Corner Grounded Table 6.4: Adjustable voltage trip limits for 208 VAC Trip Limits Low limit Low and fast limit High limit High and fast limit 66 Trip Voltage Min 180.0 VAC 104.0 VAC 208.0 VAC 208.0 VAC Trip Time Max 208.0 VAC 208.0 VAC 249.6 VAC 249.6 VAC Min 50 ms 50 ms 50 ms 50 ms Max 1.95 s 120 ms 950 ms 120 ms User Manual THEIA HE- t UL String Inverters 357116.013, Issue 2.0, April 2013 240 VAC Delta: No Neutral, 120 Split-phase, 120 Stinger, Corner Grounded Table 6.5: Adjustable voltage trip limits for 240 VAC Trip Limits Low limit Low and fast limit High limit High and fast limit Trip Voltage Min 180.0 VAC 120.0 VAC 240.0 VAC 240.0 VAC Trip Time Max 240.0 VAC 240.0 VAC 270.0 VAC 288.0 VAC Min 50 ms 50 ms 50 ms 50 ms Max 1.95 s 120 ms 950 ms 120 ms 2. Frequency Table 6.6: Adjustable frequency trip limits Trip Limits Low limit High limit Trip Frequency Min 55.00 Hz 60.00 Hz Max 60.00 Hz 63.00 Hz Trip Time Min 50 ms 50 ms Max 80 ms 80 ms General Grid Setup General Grid Setup displays grid parameters related to the selected grid. Grid code Description Grid nom voltage Grid nom frequency Grid configuration Feeding phase Voltage limit min Voltage limit max Voltage time limits min Voltage time limits max Frequency limits min Frequency limits max Frequency time limits min Frequency time limits max Grid code of installation Name of the grid protection standard Nominal voltage of the grid on site Nominal frequency of the grid on site Grid configuration of the site: e.g. Delta Split-phase, Stinger etc The phase the inverter is connected to: Lower disconnection limit of the grid voltage on site Upper disconnection limit of the grid voltage on site Minimum disconnection time limit Maximum disconnection time limit Lower disconnection limit of the grid frequency on site Upper disconnection limit of the grid frequency on site Minimum disconnection time limit Maximum disconnection time limit 6.2.3.6. Changing the Grid Code • From the Main Menu: Setup > General Grid Setup > Grid Code. • Enter – Confirm. • After 5 hours of feeding in power to the grid after installation the Installer password must be used to change the grid code settings. The Installer password is obtained for system installers and grid operators only by contacting Eltek. • The question “Change grid settings?” appears in the display. User Manual THEIA HE-t UL String Inverters 357116.013, Issue 2.0, April 2013 67 OK – Continue Canc cel – The ope eration is can ncelled Up orr Down – Sele ect the respe ective grid code Enterr – Confirm ettings are changed, c the screen wiill return to the Grid Setup screen, Afterr the grid se show wing the new wly configurred grid setttings. 6.2.4 4. Comm mands Comm mands give the ability to t delete sttored data in n the invertter logger us sing the Owne er password d. Up or D Down – Navig gate through h the list Enter – Select a su ubmenu/conffirm Figure F 6.9: Sub bmenus to Com mmands 68 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 6.2.4 4.1. Inverter Comm mands Inverrter Comma ands gives the ability to delete e events saved in the in nverter datta logge er to provide e storage sp pace. Delete Energy Log g Delete Data Log Rese et Web Admin Account Uplo oad service dia agnostics Deletes the energy log item ms and summa arized values o of the inverter Deletes the 15 minutes ave erage power va alues of the in nverter Resets the we eb administrattor account ba ack to default. User is set to o admin and Pa assword to adm min Generates service FTP dum mp of logs data a-, energy-, and d events, and upload it to an n FTP server fo or service purp poses. 6.2.4 4.2. Plant t Command ds Plantt Command ds gives the e ability to delete d even nts saved in n the data logger of th he mastter inverter to provide storage s spa ace. Delete Energy Log g Delete Data Log Rese et Number of Inverters Rebu uild plant enerrgy log Deletes the energy log item ms and summa arized values o of the plant Deletes the 15 minutes ave erage power va alues of the plant Update if inve erters are adde ed or removed d from the plan nt Rebuilds the plant p energy lo og based on th he energy logs s of the inverters currently connectted and runnin ng in the system. This process may take t several m minutes. 6.2.5 5. Alarm m Setup Alarm m Setup ena ables config guration of an a email acc count, so th he inverter c can send inform mation abou ut energy production, status s and o operation m mode to one or more receivers. Chang ges require use u of the Owner O passw word. Up or D Down – Navig gate through h the list Enter – Select a su ubmenu/conffirm Fig gure 6.10: Sub bmenus to Alarrm Setup 6.2.5 5.1. Notiffication Se etup In No otification Se etup parameters neede ed for the in nverter to send notifica ations aboutt mode e and status s on e-mail must m be typ ped in. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 69 SMTP Server SMTP port Userr Name Pass sword Send der email addrress Rece eiver email 1 Rece eiver email 2 The IP address of the SMTP P server for ena abling delivery y of emails. Can only be an IP address (i e. numeric). Sets the SMTP port numberr for SMTP serrver. Default is s 25 (initially shown as 0) User name for the mail serv ver Digits, letters and symbols making up the e user passwo ord for the mail server. A valid email address, a eg: xx [email protected] xxx, required tto be able to send notificattions Mail address for f recipient 1 Mail address for f recipient 2 E – Mail M Set-up To en nable the inverter to se end e-mail notificationss an SMTP se erver is required, which h trans sfers the ma ails to the re eceiver(s). Most M compa anies have ttheir own se erver, while norm mal households most lik kely have to use their in nternet serv vice provide er (ISP) mail serve er. NOTICE If an inv verter is mo oved, or con nnected, to another nettwork not o operated by the sam me ISP, a ne ew SMTP server must b be assigned. edure Proce Go to o the inverte er menu Ala arm Setup>Notification n Setup. Co omplete the text fields (Refe er to section n 6.2.5.1. No otification Setup). S • Use er Name and d password d: Usually prrovided by tthe ISP provider. • Sen nder email address: a This is the e-m mail addresss appearing in the From m field when receiving emails from the inverter. It must be con ame@domaiin nfigured as follows: na • Rec ceiver 1 and d 2: The recipients’ e-m mail addresse es. • SMTP server: The T SMTP server addre ess. NOTICE • All IP addresses related to the t inverter and web m must be conffigured within the range e that is allowed by the local netwo ork • For GUI G revisions s below v1.3 32, the serv er address must be configured with numbers. DNS IP • For GUI G revisions s v1.32 onwards: if usin ng a domain name, the D addre ess needs to be specified under Se etup > Netw work Setup. • Be aw ware that th he ISP provid der can cha ange the SM MTP IP addre ess without any notification. n If the e-mail reports su uddenly sto ops, do an ns slookup to see iff the IP addrress has been changed d! 70 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 6.2.5 5.2. Inverter Alarms In Inv verter Alarm ms the settin ngs for notiffication typ es and time e intervals o of the inverrter emails to t the receiv ver(s) must be defined.. Send d production on o email 1 Send d mode on ema ail 1 Send d alarm on ema ail 1 Send d production on o email 2 Send d mode on ema ail 2 Send d alarm on ema ail 2 Interrval Notiffication time Specified time e for sending i nformation ab bout energy prroduction to email 1 Immediately sends s notificattion to e-mail 1 if operation mode changes Immediately sends s notifica ation to e-mail 1 if warning o or alarm Specified time e for sending i nformation ab bout energy prroduction to email 2 Immediately sends s notificattion to e-mail 2 if operation mode changes Immediately sends s notificattion to e-mail 2 if warning orr alarm Interval betwe een the notificcations: None, Hourly, or Daiily Time for daily interval for e--mailing inform mation about tthe energy production. Used if interval is set to Daily y 6.2.5 5.3. Porta al Setup Porta al Setup displays settin ngs for uploa ading data tto a web po ortal. Fifteen n-minute avera aged energy y data is uploaded everry hour to th he portal. The upload is s disabled iff the user u name is s left blank. The portal setup is com mpatible with Meteoco ontrol Setup p. FTP Server S IP FTP Port Userr Name Pass sword FTP server IP address. Sets the FTP port p number ffor FTP server. Default is 21 FTP server user name FTP server password Note e: Only an inv verter confiigured as a Master will upload FTP data. For th hird-party FTP services, s an additional cost c may be e applied 6.2.6 6. Event t Log Even nt Log displa ays informattion about the t inverter’’s logged ev vents. The e events are listed d with the most m recent event first.. Up o or Down – Read the different values Leftt – Go back to o the previou us screen Righ ht – Go to nex xt screen Figure 6.11:: Events in the e log User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 71 Warn ning On mea ans that a warning w even nt has occu urred. Warn ning Off mea ans that an event has cleared. c 6.2.7 7. Statis stics Statiistics displays values fo or the daily, monthly, ye early and to otal energy harvest, earniings, CO2 savings and peak p power. The inform mation is read-only. Up or D Down – Read d the differen nt values Enter – Select a su ubmenu/conffirm Figure F 6.12: Su ubmenus to Sttatistics 6.2.7 7.1. Inverter Inverrter displays s a summary y of the mos st importan nt statistics of the inverter from today y, this montth, this yearr and in tota al since Starrt Up. Enerrgy Earnings CO2 avoided a Peak k Power Inverter’s tota al energy prod duction [kWh] Cash value off the feed-in en nergy in curren ncy/kWh Avoided CO2 emissions e [kg//kWh] compare ed to fossil fuel Inverter’s larg gest instantan eous amount of power prod duction [W] 6.2.7 7.2. Plant t Plantt displays a summary of the most important i sstatistics off the PV plan nt from today y, this montth, this yearr and in tota al since Starrt Up. Enerrgy Earnings CO2 avoided a Peak k Power 72 Plant’s total energy e producttion [kWh] Cash value off the feed-in en nergy in curren ncy/kWh. Avoided CO2 emissions e [kg//kWh] compare ed to fossil fuel Plant’s largest instantaneou us amount of power produc ction [W] User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 6.3. Connec C ction betwee b en Inverrter an nd PC Site performanc p ce can be mo onitored rem motely by u sing a comp puter. The c connection betw ween the inv verter and th he compute er can be co onfigured dirrectly or via a a network.. 6.3.1 1. Witho out a Nettwork To co onnect the inverter i dire ectly to a co omputer a sstandard Eth hernet cable e is required d. In cas ses where the t network k card in the e computer does not su upport Auto osense, a cross sover cable is needed. 1. Client inverter 2. Mas ster inverter 3. CAN N bus cable 4. Ethe ernet cable 5. RS-4 485 cable 6. Com mputer 7. Data a logger Figu ure 6.13: Conn nection withou ut network NOTICE With se everal inverters connec cted togeth her via CAN bus, the Eth hernet cable should s be atttached to the t master inverter onlly. 6.3.1 1.1. IP Add dress The computer c an nd the inverrter IP addre ess must be e in the sam me range. If tthe inverterr IP address is 192 2.168.10.X, the computter IP addre ess must be 192.168.10 0.Y, where X and Y are differe ent numbers s between 1 and 254. Inverrter The inverter deffault IP address is 192.1 168.10.20. T To change tthe IP addre ess, navigate e to: Se etup>Netw work Setup and a set the inverter IP a address as required. To sttart the web b connection to the inverter, open a web brow wser and typ pe the inverrter IP addre ess into the web browser address line. Computer The example e below shows the t steps to o be followe ed on a Wind dows® 7* co omputer to manu ually change e the compu uter’s IP add dress. This p procedure m may vary on n computers s with other opera ating system ms (OS): User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 73 3 1. Op pen the netw work menu by clicking Start S 2. Click Control Panel > Nettwork and Sharing S Cen nter erties 3. Click Local Arrea Connecttion > Prope elect Interne et Protocol Version 4 (TCP/IPv4) ( es 4. Se > Propertie 5. Se elect Use th he following g IP address. Entter the defa ault parame eters: IP address 192.16 68.10.10, ssubnet mask k 255 5.255.255.0 0. Clic ck OK and OK O *Windo ows is either a registered trademark or a trademark t of M Microsoft Corp poration in the e United State es and otther countries s. 6.3.2 2. With a Networrk If a LA AN or WAN network is available, th he inverter c can be hard d wired by a CAT 5 netw work cable to o any RJ45 port, p where e the DHCP ((Dynamic Ho ost Configu uration Proto ocol) server will automa atically assign a dynam mic IP addresss to the co omputer and d the in nverter. 1. Clie ent inverter 2. Mas ster inverter 3. CAN N bus cable 4. Eth hernet cable 5. Rou uter/Switch 6. World Wide Web b mputer 7. Com 8. RS--485 cable 9. Datta logger Figure 6.14: Connection with w network an nd World Wide e Web onnect the inverter i to a LAN or WA AN network,, use a stan ndard CAT5 or better To co cable e to any of the t LAN RJ4 45 ports on the t router. 6.3.2 2.1. With DHCP – Dy ynamic IP Address A Inverrter 1. Go o to Setup>N Network Se etup. 2. Se et the IP add dress to 000 0.000.000.0 000. With th his setting tthe router assigns a dynamic (DHCP) IP addres ss automatically to the e inverter. 3. Pre ess OK. The e GUI will res start to configure the n new network settings. 74 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 6.3.2 2.2. Witho out DHCP – Static IP P Address Inverrter 1. Go o to Setup>N Network Se etup. 2. Se et the IP add dress to a de esired, unique address for the inve erter (Static c). The inv verter’s IP ad ddress mustt be an unused IP addre ess in the network and d in the same ran nge as the computer’s c IP address. 3. Pre ess OK. The e GUI will res start to configure the n new network settings. 6.3.3 3. Acces ss from the t Internet In ord der to make e the inverte er(s) access sible from th he internet, further parameters mustt be set with hin the netw work setting gs. he inverter must m be ass signed a static IP addresss in the loc cal network k. Refer to 1. Th the e previous section. s 2. Po ort Forwarding must be set up with hin the locall network ro outer. Port n number 80 o of the e router is fo or Web trafffic (HTTP), and a must be e forwarded d to the inve erter’s static c IP address. a The external IP address of o the route r can be fou und at htttp://www.w whatismyip.com or similar web serv vices, or by asking the relevant Intternet Servic ce Provider (ISP). NOTICE If the external e nettwork is assigned a dyn namic IP add dress from tthe ISP, this IP addrress is unlike ely to remaiin constant over a long g time period d. It is possible for the inverter owne er to set up p an accountt with a com mpany that provide es dynamic DNS service es for comm mercial and private users, which allows the user to have a hos stname (suc ch as: yourna ame.serviceprovider.org g) that pointts to a computer with a an IP addres ss that regularly change es. In orde er to have th he dynamic DNS service e operating correctly, tthe owner’s router must be capable of rep porting its IP P address to o the dynam mic DNS service e provider. This T will mos st likely be p present in tthe router se ettings section n which asks for the de etails of the user accou unt with the dynamic DNS se ervice provid der. If the owner’s o routter does nott report its IIP address tto the dynam mic DNS service e and has a dynamic ex xternal IP ad ddress, then n periodically y a manual update e of the dynamic DNS settings will be required d. 3. Wh hen this is completed c itt should be possible to reach the T THEIA HE-t U UL we ebserver by typing the external IP address a of tthe local ne etwork or th he web address (if a dynamic d DNS S service is used) in the e computer’’s web brow wser. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 75 5 6.4. Interna I al Webs server The inverter has s an internall, onboard webserver w p providing dettailed inform mation abou ut the operation, warnin ng/alarms and energy p production o of the inverrter/plant. • The e webpage is i best view wed in Firefo ox 6.0 or Inte ernet Explorrer 8.0 and later verrsions. • From the intern nal webserv ver some inv verter setti ngs can be changed via a username e and d password.. • Typ pe the inverter’s IP addrress in the computer’s c web browser. • Deffault administrator account is: Use er: admin, Pa assword: ad dmin. This s can be changed by th he user, and d should be c changed if tthe web serrver is con nnected to the t internett. 6.4.1 1. Home e The Home H scree en is the standard displa ay, which iss always sho own when o opening the web server. Figure F 6.15: Sttandard displa ay • Sys stem status s shows the e status and d operating mode of the e inverter or the PV plant. Current power production and input valuess on DC and d AC side are e listed to the e right. • PV plant: More e detailed in nformation for f specific inverters in a plant can n be found in n the e drop-down n menu unde er Plant to the t right. • Pro oduction sta atus shows the energy yield for th he current day, month a and year. • More detailed values v from m the produc ction data c can be viewe ed by hoverring the mouse cursor over o the gra aphs. 76 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 6.4.2 2. Statis stics Statiistics gives a graphical overview ov ver the ene rgy producttion from th he current week k and the las st 12 month hs. Figure 6.16 6: Statistics • PV plant: More e detailed in nformation for f specific inverters in a plant can n be found in n e drop-down n menu unde er Plant to the t right. the • More detailed values v from m the produc ction data c can be viewe ed by placin ng the mouse cursor over o the gra aphs. For GUI G revision 1.32 and ab bove: • The e energy log g may be do ownloaded by b clicking o on the ‘down n’ arrow (willl be disp played if available). • The e energy datta download ded is deterrmined by th he unit sele ected in the dropdown box x. This functtionality ma ay not work on certain m mobile devic ces. The data d may be e imported into a sprea adsheet prog gram, with tthe data forrmat as follow ws: <dp time=”YYYY t Y-MM-DD HH H:MM:SS”> <en> >WWWW</e en> <pw> >wwww</p pw> <va>€€€€</va> > </dp p> D – the t date and time stam mp of the en ntry dp: Datapoint en: Energy for th he interval in n Wh (watt--hours) P power for the inte erval in wattts pw: Peak User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 77 va: Earnings/sav vings for the e interval with w two dec cimal points,, in the chos sen currency, c eg g. ‘7778’ is 77.78 7 Euros 6.4.3 3. Setup p Setup shows the e different settings s and d informatio on of every inverter in tthe PV plantt. Figure 6.17: Setup • Plant Informattion shows important characterist c tics of every y inverter in the PV plant. Model, serial numbe er, revision and a part no.. information are all rea ad-only. • Gen neral Settin ngs shows date d and tim me, CO2 - ratting and rate e and curren ncy of the earrning. All setttings can be b modified. • Ala arm Setup shows inform mation relatted to notifi cations and d alarms from the inve erter/plant.. No otification Setup: S Ala arm Setup: Po ortal Setup: 78 me and IP ad dress/hostt name of th he SMTP Type usernam a of tthe inverterr and mail address of serrver, the IP address the e receiver(s). Type time for sending em mail messages (0 – 23 h h) and the intterval of the e messages (1440 min = 1 day). The inverter may m upload e energy data a to an FTP--server. Specify the se erver addresss (either IP P address or DNS) in the e FTP P Server IP field, f and op ptionally a u username an nd passworrd if needed. n The e data will b e uploaded every hour. No ote: only an inverter con nfigured as a master w will upload FTP P data. For third-party t FFTP service es, an additio onal cost ma ay be applied. User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 • Nettwork show ws the param meters relatted to the ssending and receiving o of email messages. Typ pe the IP add dress (configured with numbers lik ke 192.168 8.10.20), et mask and d gateway. Refer R to 6.3 3.1.1. IP Add dress. nettwork subne • Use er Account shows the current c user accounts and provide es the ability y to setup and d/or change e user name es and passw words. The different levels are: 1. 1 Guest: 2. 2 Owner: 3. 3 Admin: Access leve el 1: Read only access tto all valuess. Access leve el 2: Read and write ac cess to all v values and s set levels except the installer related valuess such as ne etwork setttings and user accounts. Access leve el 3: Read and write ac cess to all llevels and s set values. 6.4.4 4. Event t Log Even nt Log shows s informatio on about events that th he inverter has logged.. The events s are listed with th he most rec cent event first. f Figure 6.18 8: Event Log • Rec cent events s can be view wed by naviigating direc ctly to the d different pa ages in the list on the botttom of the screen. s • Eve ents from prrevious mon nths and years can be v viewed by sspecific date es using the e cale endar to the e left. For GUI G revision 1.32 and ab bove: • The e most recent events in n the event log may be e downloade ed as a text file by clic cking the “do own”-arrow (will be disp played if ava ailable). • The e latest events from th he clients ma ay be displa ayed and do ownloaded. T This is only ava ailable if the e clients also o have the same s or new wer GUI reviision as the master unitt. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 79 6.4.5 5. Statu us Statu us displays any warning gs and alarm ms in the pla ant, and giv ves an overv view of the plantt’s technical characteris stics and en nergy yield. Figure 6.1 19: Status • Ala arms tab ide entifies any specific warning or ala rm in the plant, with an ny activated d item ms highlightted. The e Extended Status lines s are used by b Eltek serv vice person nnel to help diagnose pos ssible faults s. • Ove erview prov vides input parameters p from the PV V panels to the inverte er/plant, the e outtput parame eters from the t inverter/ /plant to th he grid, as w well as earnings, avoided CO2 emission and a total energy produc ction with p peak values from the inve erter/plant.. • Plant (available in a unit configured as a a master when selec cting ‘Plant’ in the drop wn list) prov vides a snap pshot of the e connected d inverters, sstatus and e energy dow pro oduction info ormation. To o refresh th he informatio on, click the e ‘Plant’ tab. 80 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 7. TROU T BLES SHOOT TING This chapter c con ntains usefu ul informatio on if the inv verter malfu unctions durring opera ation. Start by checking g the installlation is carrried out corrrectly, and the display y inform mation, and d then check k the inform mation in 7.2 2. Table of E Events for possible soluttions. If this does not he elp solve the problem, please conttact the sys stem insta aller. 7.1. Check C List by y Failurre If the e inverter do oes not feed d power to the t grid, try y to solve th he problem b by checking g: ; ; ; ; Th hat both the e AC and DC C disconnec ct circuit bre eaker(s)/dissconnect(s) are ON. Th hat the irrad diation is su ufficient to generate g po ower (>7 W). Th hat the ope eration mode e of the LED Ds is normall (Refer to 5 5.1.2.2. LEDs s). Th hat there arre no warnin ngs or alarm ms in the dissplay (Refer to 7.2. Tablle of Events). ; Th hat all conn nection points in the sys stem are prroperly tighttened. ; Th hat the valu ues of the PV P voltage, current c and power mattch those in the display y. If all these t items s are OK, and there is sttill no powe er fed to the e grid, conta act your distriibutor. 7.2. Table T of o Even nts The inverter auttomatically identifies i op perational isssues and d displays the messages on th he screen. Detailed D info ormation abo out warning gs and alarm ms can be fo ound in the Even nt Log menu. Refer to 6.4.4. Event Log. L sages that can c appear in the displlay: Mess W = Warning: W inv verter contin nues to ope erate at high hest possiblle capacity (Yellow LED D) A = Alarm A (Red LED) L The Display D Mes ssage code number (E0 01, E02, etc c..) is the co ode shown in the eventt description as displayed d in the Event Log L of the w webserver v view: User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 81 Table 7.1: Description of messages appearing in the display during inverter failure Display Message Description Action Panel fault (W/A – E01) PV module failure - Contact the supplier* Illegal grid setting Grid settings check sum error. - Verify if the AC circuit breaker is ON and operational - Measure that the grid voltage is >184Vac at the AC terminals - Check that the DC switch is ON and that the DC power is >7W - Check that the grid settings have been successfully set in Setup>Grid Setup No detection of the grid, or grid setting never stored - Check that the grid settings have been successfully set in Setup->Grid setup - Check the AC breaker is ON and that the grid voltage is >184Vac present at the AC terminals - Check that the DC switch is ON and that the DC power is >7W - Restart Inverter (DC and AC) and retry For Italy int SPI self test: Self test has failed - Verify if the installation procedure was executed. The grid code should be set to Italy int SPI - Verify if the inverter is feeding power to the grid (sufficient irradiation) - Restart the test later Grid fault (I/A – E05) No detection of the grid, not able to synchronize with the grid or fault when setting the gridsettings - Verify if the AC circuit breaker is on and operational - Measure that the grid voltage is present at the AC terminals - Check that the DC switch is on and that the DC power is > 7W - Check that the country settings have been successfully set in Setup>Grid Setup - Turn the AC ‘off’ and then ‘on’ High DC voltage (I/A – E07) DC voltage threshold of 600 VDC is exceeded - Fault is cleared automatically when PV voltage reduces below 600V - If the inverter remains in this fault, contact the supplier (W/A – E02) Uninitialized grid setting (W – E03) Self test failure (W/A – E04) 82 User Manual THEIA HE- t UL String Inverters 357116.013, Issue 2.0, April 2013 Low DC voltage (I/A – E08) DC voltage is too low to operate the inverter - Fault is cleared automatically when PV voltage exceeds 230V - If the inverter remains in this fault during daylight, contact the supplier Low PV isolation resistance (I – E09 PV isolation resistance is below the permitted level - Check the complete installation (PV panels, frames, cables, etc.) for areas of low resistance to Earth - The grounding setup is configured incorrectly - Check the jumper for the grounding setup (refer to 4.3.4.7 Jumper Position for System Grounding Setup) Inverter DC side failure (W/A – E10) Inverter failure on the DC side - Failure on the DC side. Other W/A are also shown - If the inverter is in Shutdown, turn off the AC side and then the DC side. Wait for 30 seconds, then turn on the AC side and then the DC side - If the fault persists, contact the supplier. Also record the extended status values (see 6.2.2.2 Inverter Status) Inverter AC side (W/A – E11) Inverter failure on the AC side - Failure on the AC side. Other W/A are also shown - If the inverter is in Shutdown, turn off the AC side and then the DC side. Wait for 30 seconds, then turn on the AC side and then the DC side - If the fault persists, contact the supplier. Also record the extended status values (see 6.2.2.2 Inverter Status) High inverter temperature (W/A – E12) Maximum permissible internal inverter temperature is exceeded - Check that the ambient temperature is within the specification (Refer to 10 Technical Data) - Check if the ventilation is sufficient, the minimum distances for cooling are followed and the inverter is shielded from direct sunlight - Clean ventilation (Refer to 8.2.8 Ventilation) User Manual THEIA HE-t UL String Inverters 357116.013, Issue 2.0, April 2013 83 Current / power limitation (I – E14) PV power exceeds inverter rating - Input PV power exceeds the normal input levels of the inverter. The inverter will deliver maximum power. - If in shutdown, the inverter will try to start up again when the temperature is within the permissible range again - Check if the ventilation is sufficient, the minimum distances for cooling are followed and the inverter is shielded from direct sunlight - Clean ventilation (Refer to 8.2.8 Ventilation) Communication failure (A – E15) Internal communication failure - If the inverter is in Shutdown, turn off the AC side and then the DC side. Wait for 30 seconds, then turn on the AC side and then the DC side - If the fault persists, contact the supplier Fan failure (W/A – E16) Internal air distribution is missing - Contact the supplier for a replacement fan Fuse fault (A – E17) The grounding jumper is in the wrong place, or one or more DC fuses are blown - The grounding setup is configured incorrectly - Check the jumper for the grounding setup (refer to 4.3.4.7 Jumper Position for System Grounding Setup) - If the jumper is correctly positioned, contact the supplier - Contact the distributor for replacement fuses Active power limitation (I – E18) The inverter is in Active power limitation mode. - No action needed Reactive power compensation (I – E19) The inverter is in Reactive power compensation mode. - No action needed 84 User Manual THEIA HE- t UL String Inverters 357116.013, Issue 2.0, April 2013 Microprocessor fault (W/A – E20) Grid code not correctly set, or, internal processor fault - Check the AC breaker is ON and that the grid voltage is >184Vac present at the AC terminals - Check that the DC switch is ON and that the DC power is >7W - Check that the grid settings have been successfully set in Setup>Grid Setup - If the inverter is in Shutdown, turn off the AC side and then the DC side. Wait for 30 seconds, then turn on the AC side and then the DC side - If the fault persists, contact the supplier Grid: High AC voltage Too high AC voltage, the inverter stops feeding power - The inverter will restart when the voltage is within the permissible range - Check that the grid settings have been successfully set in Setup > Grid Setup - If the failure persists, contact the supplier Too low AC voltage, the inverter stops feeding power - The inverter will restart when the voltage is within the permissible range - Check that the grid settings have been successfully set in Setup > Grid Setup - If the failure persists, contact the supplier Grid: High AC frequency (I – E24) The frequency of the grid voltage is above the upper limit - The inverter tries to restart when the frequency is within the permissible range - Check that the grid settings have been successfully set in Setup > Grid Setup - If the failure persists, contact system installer Grid: Low AC frequency (I – E25) The frequency of the grid voltage is below the lower limit - The inverter tries to restart when the frequency is within the permissible range - Check that the grid settings have been successfully set in Setup > Grid Setup - If the failure persists, contact the supplier (I – E22) Grid: Low AC voltage (I – E23) User Manual THEIA HE-t UL String Inverters 357116.013, Issue 2.0, April 2013 85 Grid: High output DC current (I – E26) Too high proportion of DC current in the grid feeding - The inverter tries to restart when the fault is cleared - If the fault still occurs, contact the supplier Output powerimbalance (I – E27) Imbalance in the output power - No action needed Grid fault, still running Fault ride-through - No action needed VDR fault DC side (I – E29) The varistors on the DC side are damaged. - Contact the supplier for new parts DNO Remote trip (I – E32) Inverter tripped as a result of a command from the DNO - The DNO must remove the signal before the inverter will restart (I– E28) * Reserved for future use 86 User Manual THEIA HE- t UL String Inverters 357116.013, Issue 2.0, April 2013 8. MAINT M TENA ANCE This chapter c exp plains how to t switch OF FF and disch harge the in nverter safely. It also proviides an overrview of imp portant regu ular mainten nance proce edures to ensure troub ble-free ope eration of th he THEIA HE E-t UL invertters. Finally, it is explain ned how to remo ove and retu urn the inverters. 8.1. Switch S h-OFF Always turn OFF F and discon nnect the inv verter in the e following order prior tto maintenance wo ork or repairrs: DANG GER Never perform wo ork on the in nverter with out disconn necting both h the DC and AC C side becau use of deadlly voltages present at tthe termina als. side DC-s • Turn OFF th he DC switch. • Disconnectt the connec ctors. side AC-s • Turn OFF th he AC circuitt breaker(s)). • Let the DC capacitor bank b discharrge. WARN NING Lethal voltages may be prese ent inside th he inverter a after switch h OFF, se of a charged capacittor bank. It m must be disscharged forr 1 hour becaus before performing g service or maintenanc ce work on tthe inverterr. 8.2. Regula R ar System Inspectio ons The THEIA T HE-t UL U inverters s are design ned and man nufactured to operate trouble-free e for se everal years s. Performin ng regular maintenance m e will ensure e high efficie ency and a longe er service liffe for the inverter. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 87 NOTICE Only pe ermit qualifiied persons to perform m the work in nside the inv verter! Mainte enance work k involving removal r of tthe inverter’s lower cov ver must be perform med by qualified person ns only, due e to the requ uirements o of the produc ct warranty.. 8.2.1 1. Modules Mainttain the PV modules as s recommen nded from th he manufac cturer. 8.2.2 2. Cable es Regu ularly check all cables in nside and ou utside for siigns of therrmal and me echanical dama age. Replace e frayed conductors im mmediately! 8.2.3 3. Electrrical Con nnection Regu ularly check that the terminals and d plugs are ffirmly tighte ened, and th hat the insula ation is not deteriorate ed or corroded. Do not fforget the c combiner bo ox! 8.2.4 4. Fuses s/Circuit Breakerrs Frequ uently blown fuses or tripped t circu uit breakerss are a clearr warning sig gn of overlload, short circuit c or gro ound fault. • Alw ways determ mine the reason for blow wn fuses/trripped circuit breakers prior to rep placement/rresetting. • The e replaceme ent/resettin ng must be performed p b by qualified persons on nly! 8.2.5 5. DC Fu uses / Gro ound Fus se If a DC D fuse blow ws, the following messa age will app ear in the display: “Fuse fault” (Refe er to 7.2. Table of Events). DANG GER The ph hotovoltaic modules m (pa anels) delive er power wh hen exposed d to light and pro oduce hazardous voltages, which is still prese ent at the te erminal blocks and fuse ho olders afterr switch OFFF. Do not rep place the DC C fuses when the t PV modu ules are exp posed to ligh ht! 88 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 Replacement Procedure P • Turrn OFF both the AC circu uit breaker((s) and DC s witch. DANG GER Always s disconnect both the DC D and AC ssides before e opening th he inverter’s s lower cover c due to o the risk off shock haza ards. • Rem move the inv verter’s low wer cover (Re efer to 2.4.5 5. Inverter E Enclosure). • Che eck that the e terminals are a voltage free. • Alw ways check the t cause of o the defec ctive fuse prrior to replacement. • DC Fuses: Mea asure the vo oltage and current: c If th he voltage iss close to or 0 VDC or the ere is a meas surable currrent do not remove the e fuse holde er. Recheck wiring for dea ad shorts orr reversed polarity. p • Gro ound Fuse: Measure M one string at a time: The voltage bettween the p positive and d the e ground terrminal block k, and then the t negative e terminal a and the grou und termina al block. Both volltage measu urements should be eq qual to the o open circuit voltage (VOOC ) div vided by 2. If the measurements are differentt, there is a ground faullt. Repeat for each string g. • If th he voltage and a current measureme ents are corrrect, remov ve and repla ace the deffect fuse(s).. • Alw ways exchan nge the fuse es with the same type and rating. Figure 8.1: Dimensions D of the t DC fuses//ground fuse • Mak ke sure thatt the replac ced fuse(s) is s completelly inserted iin the fuse h holder, and inse ert the fuse e holder. • Fas sten the inve erter lower cover firmly y (Refer to 2 2.4.5. Invertter Enclosurre). • Turrn on the AC C circuit brea aker(s) and the DC swittch. 8.2.6 6. DC Dis sconnectt Switch h To prrevent weld ding of the contacts, c thereby exten nding servic ce life, the D DC switc ch(es) must be operate ed at least once o every 1 12 months, preferably at night or when n the AC is OFF. O 8.2.7 7. Invert ter The interior of th he inverter must m be che ecked by th he system in nstaller for h humidity an nd dust every 3 – 4 years. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 89 8.2.8 8. Ventilation The heatsink h on the backsid de of the inv verter cond ucts heat a away from the electtronic components and must be cle ean to ensu ure sufficien nt cooling, thereby preve enting yield losses. This s is accomp plished by ussing one of the followin ng: • Vac cuum cleane er • Sofft brush • Com mpressed airr Figure 8.2: 8 Heatsink cleaning c 8.2.9 9. Fan The fan f circulate es the air inside the inv verter, which h distributes heat and tthereby maintains the co onversion ca apacity. The e replaceme ent of the fa an requires removal of the in nverter upper cover and must be performed p b by Eltek autthorized serrvice perso ons only! Figure 8.3: Po osition of the ffan • A message m is shown s in the e display wh hen the fan needs repla acement. Re efer to 7.2. Tab ble of Eventts. • If th he fan fails, the inverte er continues s to feed the e maximum amount of power ava ailable until a certain te emperature threshold, a at which point it starts to reduce pow wer to prote ect itself ag gainst overheating. 90 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 8.2.1 10. Varist tors (VDR R) Varis stors have a finite life expectancy, e and degrad de and lose their protec ctive functtion when exposed e to transients. t They T thereffore need re egular inspe ections (everry six month hs). Replace ement requires remova l of the inve erter lower c cover and the use u of the VDR V service tool, t and mu ust be perfo ormed by qualified perrsons only! 8.2.1 10.1. DC Side S • A message m is shown s in the e display wh hen a DC va ristor needss replaceme ent. Refer to o 7.2. Table of Events. • Rep place the da amaged varistor with DC D Varistor K Kit ordered ffrom Eltek, part numbe er 271 1539. • The e two varisttors on the DC D side are located on tthe left side e of the inve erter lower com mpartment above the network n con nnections. • Notte the posittions of the varistors if they are in need of rep placement. Fig gure 8.4: Varistors on the DC C side 8.2.1 10.2. AC Side S • No warnings arre given reg garding the condition c off the varisto ors on the A AC side. The erefore, they need to be checked regularly r (att least once e a year) or a after ligh htning strike es. • Rep place the da amaged varistor with AC A Varistor K Kit ordered ffrom Eltek, part numbe er 263 3574. • The e three varis stors on the e AC side are e located in n the right siide of the in nverter lowe er com mpartment above the AC A terminal area. • Notte the posittions of the varistors if they are in need of rep placement. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 91 Fig gure 8.5: Varistors on the AC C side ck of the AC C Varistors s Chec Meas sure the ohm ms (resistan nce) betwee en the term inal and the e bent pin on n each varistor as per th he below diagrams: Figu ure 8.6: Check king the AC varristors Table 8.1: Check if the t varistors are a damaged Mea asurements s Betw ween GND (1) ( and the left l VDR (2)) Betw ween L (3) and a the mid ddle VDR (4) Betw ween L (3) and a the righ ht VDR(5) Undama aged Dam maged 0Ω ∞Ω 0Ω ∞Ω 0Ω ∞Ω Replacement Procedure P • Use e the service tool delive ered in the packaging p w with the new w varistors ordered from m Eltek. The e service to ool is designed as a fork k, and can o pen up all terminal clam mps simulta aneously. 92 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 Fig gure 8.7: Servic ce tool to open the varistor terminal clam mps • Ope en the term minal clamps s and remove the dama aged varisto or(s). • Com mply with Fiigure 8.4 an nd Figure 8.5 5 to get the position off the varisto ors right. • Use e the service tool to op pen the clam mps when in nserting the new varisto or(s). 8.3. Replac R ce Devic ces The inverter can n be replaced without disassemblin d ng the Stringbox. NOTICE Remov val of the inv verter’s lower cover mu ust be perfo ormed by qu ualified person ns only! WARN NING Always s disconnect the powerr sources prrior to remo oval of the lo ower cover! The inv verter is cha arged with lethal voltag ges, and rem moval of the e lower cover poses p a sho ock hazard iff the inverte er is not disconnected. 8.3.1 1. Dismo ounting • • • • • Rem move the inverter lowe er cover (Reffer to 2.4.5. 2 Front Cov vers). Disc connect botth the DC an nd AC termiinals. Rem move the sc crews J and K inside the e Stringbox . Pull up the fixin ng plate bettween the Stringbox S an nd the inverrter. Pull the inverte er up and slide it out off the mount ing brackett. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 93 3 Figurre 8.8: Dismounting of the in nverter 8.3.2 2. Repla acement • Slid de the new inverter i carefully onto the mounti ng bracket (1 – 2 below w). Refer to 4.1.2 Inverter. • Che eck that the e connection n holes on the t inverter (E, F and G below) and on the Stringbox (H) are a aligned (3). ( • Guide the fixing plate I into the slot between b the e inverter an nd the Stringbox (4). • Fas sten the screws J and K with a torq que of 1.48 ft-lbf / 2.0 Nm. Figurre 8.9: Procedu ure for replacin ng the inverte er 94 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 It is possible p to add a new inv verters, or re eplace existting inverterrs, in a PV system. Clien nt • If th he replaced inverter is a client, the e master inv verter will au utomatically y identify the e replaced device and put p it into op peration. • The e device num mber is auto omatically maintained. m Mast ter • If th he replaced d inverter is the masterr and masterr functionallity is desire ed, an exis sting inverter needs to be set up as a master. T This is done in Setup>N Network Settup>Set as Master unitt. Select YES S, and an au utomatic log gon-sequen nce is perrformed. NOTICE Remov val of the inv verter’s lower cover mu ust be perfo ormed by qu ualified person ns only! WARN NING Always s disconnect the powerr sources prrior to remo oval of the lo ower cover! The inv verter is cha arged with lethal voltag ges, and rem moval of the e lower cover poses p a sho ock hazard iff the inverte er is not disconnected. 8.4. Return R n and Disposal When n replacing an a inverter, it can eithe er be returne ed to the diistributor orr disposed according to sta ate and fede eral regulations. Eltek iss committed to its polic cy of envirronmental re esponsibility y and therefore appealls to end ussers who are e disposing inverrters to follo ow local env vironmentall legislation and to seek k safe and rresponsible mean ns of dispos sal. 8.4.1 1. Returrn For re eturn to the e distributorr the inverte er should alw ways be in iits original p packaging o or equiv valent packa aging. In cas se of return n of the prod duct as a result of inve rter failure, a fault repo ort must be e subm mitted to obtain a Returrn Material Authorizatio A on (RMA) nu umber. The ffault report temp plate can be e found at: www.eltek.c w com/supporrt. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 95 5 Priorr to Return • • • • • Loo osen the loc cking screws s attached to t the fixing g clip on the e mounting bracket. Pull the inverte er up and ou ut of the bra acket. Pac ck the invertter securely y in the pack kaging. Add d a fault rep port if releva ant. Retturn to the given g address in the res spective sta ate. 8.4.2 2. Dispo osal In cas se of return n as a resultt of end of service life, tthe inverterr can be retu urned to the e distriibutor or dis sposed in th he respectiv ve country. S Shipping to the distribu utor is paid by se ender. Recy ycling and disposal of th he THEIA HE E-t UL invertter must be done accorrding to the e rules s and regulations applic cable in the state of dissposal. All m material used d for the inverrter packagiing is recycllable. 96 User Manu ual THEIA HE- t U UL String Inverte ers 357116.013, Issue 2.0, April 2013 9. WARR W RANTY Y The inverters are e compatiblle with all re elevant stan ndards and are guarantteed to be free of o manufacturing defects from the e date of pu urchase. Ple ease refer to o the Warranty docum ments on Elttek’s web siite (www.el tek.com) fo or more deta ailed inform mation abou ut the warra anty of the inverter. If a any questio ons, please c contact you ur inverrter supplierr or the Elte ek office in your y territorry. 9.1. Warran W nty Serrvice The standard s wa arranty applies for 10 years, y with a an optional extension o of up to 20 years s. To mainta ain the full warranty w pe eriod, the inv verter mustt be installed d within 6 montths after the date of pu urchase. NOTICE To maintain the warranties th he inverter m must be insttalled, operrated and mainta ained accord ding to the instructionss detailed in n this manua al and all the app plicable loca al regulation ns. 9.2. Warran W nty Disclaime er The warranty w is void by misuse or when n unauthorizzed repairs are perform med on the inverrter. The warranty does s not cover normal wea ar and tear o of the invertter. The warra anty is only valid with an a identifiab ble and acce epted seriall number. 9.2.1 1. Dama age Eltek k takes no re esponsibility y for damag ges to the in nverter due to: • Una authorized persons p rem moving the inverter upp per cover. • Una authorized modification m ns made to the inverterr. • Inve erter installed, commissioned, ope erated or ma aintained inc correctly. • Rele evant safetty regulation ns and instrructions in tthis User Ma anual being ignored. • Inve erter operatting beyond d the limit va alues given in 10. Technical Data. • Inve erter exposed to external abnorma al condition ns such as lig ghtning, sto orms, fire, van ndalism, etc c. Referr to the Warrranty docu ument for de etails of ben nefits and e exclusions tthat may apply y to you. User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 97 98 User Manual THEIA HE- t UL String Inverters 357116.013, Issue 2.0, April 2013 10. TECH HNICA AL DA ATA 10.1.. Invertter dattasheet INPUT DATA A (PV SIDE) THEIA 2.0HE-t 2 Nominal DC power p Max recomme ended PV pow wer Max input ope erating curren nt Max input sho ort circuit Max DC voltage Normal opera ating range Number of PV V string inputs s Number of MP PP trackers Input features 2100W 3000W 4000 0W 4600W 2625W 3750W 5000 0W 5750W 9.5A 13.5A 18.0A A 21.0A 11.5A 16.5A 22.0A A 25.0A 600VDC 230 – 50 00VDC 3 1 Reverse polarity prote ection; Ground fault monitoring; Integral DC switch; Integ gral s for string inp puts (optional);; Field configu rable for posittive and negattive DC fuses grounded PV strings THEIA 2.9 H HE-t THEIIA 3.8 HE-t THEIA 4.4 H HE-t OUTPUT DA ATA (GRID SID DE) Nominal outp put power Max output current c AC voltage Mains frequency Power Factorr (Cos Phi) Inrush current Max output fa ault value current duratio on 2000W 2900W 3800 0W 10.0A / 8.5A 8 14.0A / 12.0A A 18.5A A / 16.0A 208 (+ 29%, - 14%) or 240VAC (+ 13 % %, - 25 %) sing gle phase 55.0 – 63 3.0 Hz 1 100 mA (rms), 2 A (pea ak) 3.14 A 13 ms 4400W 21.5A / 18.5 5A 97.2 % 97.2 % 97.2 % 96.8 % 96.8 % 97.0 % 96.3 % 96.5 % 96.7 % <7W <1W AC volta age: ± 2.5V, Fre equency: ± 0.1 1 %, Time: ± 30 0 ms 0.0 A 97.3 % 97.0 % 96.9 % PERFORMAN NCE DATA Maximum effficiency CEC efficiency EU efficiency Power feed starts at Night mode power p Measurementts accuracy Max utility ba ackfeed to PV MECHANICA AL DATA Protection de egree Dimensions Weight Cable access Input cable co onnection Output cable connection NEMA 3R R or 4X depend ding upon mod del H: 28.35 5inches/720 mm m W: 13.9in nches/353 mm m D: 6.5inc ches/165 mm (6.68 inches/1 169,5 mm with h bracket) <22kg / 49lbs. <22kg / 49lb s. <23k kg / 51lbs. Bottom Conduits s and screw te erminals, otherrs on request Conduits s and screw te erminals 23kg / 51lbs s. DESIGN STA ANDARDS EM compatibility CE / UL marking Other standards Safety (prote ective class) EN 6100 00-6-2, EN 610 000-6-3, FCC le evel B Yes UL 1741,IEEE 1547, IEC C 61000-3-2/1 11, IEC 61000--3-3/12 Class I ENVIRONME ENTAL DATA A Operating tem mperature Storage temp perature Ventilation -25 to +6 60 °C / -13 to +140 + °F (Possiible power derrating above + +40 °C / +104 °°F) -40 to + 80 °C / -40 to +176 °F Convecttion cooling User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 99 ADDITIONAL FEATURES Topology Noise emission Communication Warranty 100 High frequency transformer, galvanic isolation ≤ 37dB Graphical, color display with touch sense buttons, 3x LEDs for visual status indication, embedded web-server, Ethernet, CAN bus, RS-485 bus 10 years, 15 years, 20 years options User Manual THEIA HE- t UL String Inverters 357116.013, Issue 2.0, April 2013 10.2.. Field Adjusttable Trip Lev vels Table 10.1: Continen ntal 208Vac Trip T Details VALUE Vac Overvolta age high trip level Vac Overvolta age high trip time e Vac Overvolta age low trip level Vac Overvolta age low trip time Vac Undervolltage high trip level Vac Undervolltage high trip time e Vac Undervolltage low trip level Vac Undervolltage low trip time Vac Over freq quency trip level Vac Over freq quency trip time Vac Under fre equency trip level Vac Under fre equency trip time DEFAULT D SE ETTING MIN. M LEVEL MAX. LEV VEL ACC CURACY 247.1 V 208.0 V 249.6 V ± ±2.5V 120 ms s 50 ms 120 mss ± ±30 ms 226.3 V 208.0 V 249.6 V ± ±2.5V 950 ms s 50 ms 950 mss ± ±30 ms 185.5 V 180.0 V 208.0 V ± ±2.5V 1.95 s 50 ms 1.95 s ± ±30 ms 106.5 V 104.0 V 208.0 V ± ±2.5V 120 ms s 50 ms 120 mss ± ±30 ms 60.45 Hz z 60.00 Hz 63.00 H Hz ± ±0.1% 80 ms 50 ms 80 ms ± ±30 ms 59.35 Hz z 55.00 Hz 60.00 H Hz ± ±0.1% 80 ms 50 ms 80 ms ± ±30 ms DEFAULT D SE ETTING MIN. M LEVEL MAX. LEV VEL ACC CURACY 285.5 V 240.0 V 288.0 V ± ±2.5V 120 ms s 50 ms 120 mss ± ±30 ms 261.5 V 240.0 V 270.0 V ± ±2.5V 950 ms s 50 ms 950 mss ± ±30 ms 213.7 V 180.0 V 240.0 V ± ±2.5V 1.95 s 50 ms 1.95 s ± ±30 ms 122.5 V 120.0 V 240.0 V ± ±2.5V 120 ms s 50 ms 120 mss ± ±30 ms 60.45 Hz z 60.00 Hz 63.00 H Hz ± ±0.1% 80 ms 50 ms 80 ms ± ±30 ms 59.35 Hz z 55.00 Hz 60.00 H Hz ± ±0.1% 80 ms 50 ms 80 ms ± ±30 ms Table 10.2: Continen ntal 240Vac Trip T Details VALUE Vac Overvolta age high trip level Vac Overvolta age high trip time e Vac Overvolta age low trip level Vac Overvolta age low trip time Vac Undervolltage high trip level Vac Undervolltage high trip time e Vac Undervolltage low trip level Vac Undervolltage low trip time Vac Over freq quency trip level Vac Over freq quency trip time Vac Under fre equency trip level Vac Under fre equency trip time User Manual M THEIA HE E-t UL String Inve erters 357116.01 13, Issue 2.0, April 2013 101 ADDENDUM Due to continuing product improvements and legislation changes, the specification and functionality of the THEIA HE-t inverter described in the included documentation may not match the specifications and functionality of the delivered inverter 100%. A typical example is when firmware updates have been applied to the inverter postmanufacture. Complete inverter user information can be found in the THEIA HE-t UL User Manual. The latest version can to be found at www.eltek.com. 102 User Manual THEIA HE- t UL String Inverters 357116.013, Issue 2.0, April 2013 CONTACT INFORMATION Eltek Inc. (Americas Headquarters) 2925 E. Plano Parkway Richardson, TX 75074 USA Phone: +1 (469) 330 - 9100 Fax: +1 (972) 424 - 0885 Web: www.eltek.com/us E-mail: [email protected] Service e-mail: [email protected] NA Sales e-mail: [email protected] Outside North America find your local office at: www.eltek.com User Manual THEIA HE-t UL String Inverters 357116.013, Issue 2.0, April 2013 103 www.eltek.com