Download Micrologic Control units
Transcript
Low voltage electrical distribution Micrologic Control units 5.0 H, 6.0 H and 7.0 H User manual 01/2009 Micrologic control units 5.0 H, 6.0 H and 7.0 H Contents Discovering Micrologic H 4 5 6 8 9 10 11 12 14 18 20 Overview of functions 22 Setup 50 Protection settings 60 Current protection Voltage protection Other protection Load shedding and reconnection Measurements Harmonic measurements Alarms Optional M2C and M6C contacts Event histories Leds and display screens COM communications option Setting up the optional M2C / M6C contacts Setting up the Micrologic control unit Setting up the metering functions Setting up the COM communications option Fine adjustment of the long-time I2t, short-time and instantaneous settings using the keypad Fine adjustment of the long-time Idmtl, short-time and instantaneous settings using the keypad Fine adjustment of the ground-fault and earth-leakage protection setting using the keypad Setting the neutral protection Setting the I t , I unbal, I max, U min, U max, U unbal, rP max, F min, F max, and phase-rotation protection functions using the keypad Setting load shedding / reconnection 22 28 29 30 31 33 44 45 46 47 49 50 52 55 58 60 61 62 63 64 66 Metering 68 Maintenance 84 Current measurements Voltage measurements Power measurements Energy measurements Harmonic measurements Frequency measurements Resetting fault indications Viewing the event histories Operation counter and contact-wear indicator Checking/replacing the battery Tests 04443728AA - 01/2009 4 Identification Presentation Setting procedure Setting Micrologic 5.0 H using the dials Setting Micrologic 6.0 H using the dials Setting Micrologic 7.0 H using the dials Selecting the type of neutral protection Main menus Metering History, maintenance and setup Protection 68 71 73 75 76 82 84 85 86 87 88 Micrologic control units 5.0 H, 6.0 H and 7.0 H Contents Technical appendix 90 Tripping curves Voltage measurements Zone selective interlocking (ZSI) Power supply Changing the long-time rating plug Thermal memory Data available via the COM communications option Threshold and time-delay settings Other settings Measurement setting ranges and accuracy Power factor sign conventions 90 92 94 95 97 98 99 101 104 105 106 Index 108 04443728AA - 01/2009 04443728AA - 01/2009 Discovering Micrologic H Identification All Masterpact NT and NW circuit breakers are equipped with a Micrologic control unit that can be changed on site. Control units are designed to protect power circuits and connected loads. They offer current, voltage, frequency, power and energy measurements. The functions provided by Micrologic 5.0 H, 6.0 H and 7.0 H control units optimise continuity of service and power management in your installation. Micrologic 5.0 H DB119909 E71927A Selective protection + Idmtl, power measurements and additional protection Micrologic 5.0 H t Idmtl 4260A N 1 2 3 100 50 0 0 long time Ir .7 .6 .5 .4 tr 8 (s) 4 .9 12 16 .95 2 .98 1 20 24 1 .5 .8 x In tsd (s) Ii I .3 .2 .1 2 on I t instantaneous 6 8 10 4 12 3 15 off 2 x In .2 .1 0 off delay test Micrologic 6.0 H Y X: type of protection b 2 for basic protection b 5 for selective protection b 6 for selective + ground-fault protection b 7 for selective + earth-leakage protection Micrologic 6.0 H t t DB119911 DB119909 Selective protection + Idmtl + ground-fault protection, power measurements and additional protection E71928A E71926A Ii .4 .4 .3 setting X Isd @ 6 Ir short time Isd 4 5 3 2.5 6 2 8 1.5 10 x Ir Micrologic 5.0 H Ir Selective protection + Idmtl alarm Idmtl 4260A 2 I t on N 1 2 3 100 Z 2 I t off 50 0 0 long time Ir .7 .6 .5 .4 tr 8 (s) 4 .9 12 16 .95 2 .98 1 20 24 1 .5 .8 x In @ 6 Ir short time Isd 4 5 3 2.5 6 2 8 1.5 10 x Ir tsd on setting Ig D C B A Ii .4 .4 .3 .2 .3 .1 .2 .1 2 0 (s) I t instantaneous 4 3 off 6 8 10 12 15 off 2 x In delay Isd Ii 0 I Ig I Ground-fault protection test tg E Ir Selective protection + Idmtl alarm .4 .4 .3 .2 .3 .1 .2 .1 2 0 (s) F G H J on I t off ground fault Y: version number Identification of the control-unit generation: "0" signifies the first generation. Micrologic 7.0 H t DB119913 DB119909 Selective protection + Idmtl + earth-leakage protection, power measurements and additional protection E71929A Z: type of measurement b A for "ammeter" b P for "power meter" b H for "harmonic meter" b no indication = no measurements Micrologic 7.0 H Idmtl 4260A t N 1 2 3 100 50 0 0 long time Ir .7 .6 .5 .4 tr 8 (s) 4 .9 12 16 .95 2 .98 1 20 24 1 .5 .8 x In @ 6 Ir short time Isd 4 5 3 2.5 6 2 8 1.5 10 x Ir tsd .4 .4 .3 .2 .3 .1 .2 .1 2 0 (s) on setting I∆n (A) 3 2 1 .5 5 alarm I t off delay (ms) instantaneous 4 3 Isd Ii I 0 I∆n I Earth-leakage protection 6 8 10 12 15 off 2 x In test ∆t 230 7 10 140 20 30 60 Ii Ir Selective protection + Idmtl 350 800 earth leakage 04443728AA - 01/2009 top fastener terminal block for external connections housing for battery screw for long-time rating plug long-time rating plug cover opening point protective cover lead-seal fixture for protective cover infrared link with communications interfaces connection with circuit breaker bottom fastener E60235B 1 2 3 4 5 6 7 8 9 10 11 E60236A Presentation Discovering Micrologic H 1 2 0P 5. logic Micro 3 9 alarm Indications time tr (s) 2 1 4 .5 8 12 16 20 24 at 6 Ir 4 5 7 10 6 11 Micrologic 5.0 H 12 17 E60238A LED indicating long-time tripping LED indicating short-time or instantaneous tripping LED indicating ground-fault or earth-leakage tripping LED indicating additional-protection or auto-protection tripping graphics display button for reset of fault-trip LED reset and battery test 8 E71930A 12 13 14 15 16 17 long .8 .9 .7 .95 .6 .98 .5 1 .4 x In Ir 18 19 20 21 22 23 13 14 Navigation 100 50 0 Micrologic 5.0 H control unit E60239A long-time current setting Ir long-time tripping delay tr short-time pickup Isd short-time tripping delay tsd instantaneous pickup Ii ground-fault pickup Ig ground-fault tripping delay tg earth-leakage pickup I∆n earth-leakage tripping delay ∆t LED indicating an overload test button for ground-fault and earth-leakage protection test connector N 1 2 3 16 Adjustment dials 24 25 26 27 28 29 30 31 32 33 34 35 4260A 15 access button to the "Metering" menu (1) access button to the "History, maintenance and setup" menu (1) access button to the "Protection" menu (1) button used to scroll down or reduce the displayed value button used to scroll up or increase the displayed value button used to select or confirm a choice long time Ir 24 25 26 27 .7 .6 .5 .4 tr 8 (s) 4 .9 12 16 .95 2 .98 1 20 24 1 .5 .8 x In Micrologic 6.0 H control unit 33 alarm tsd (s) .4 .4 .3 .3 .2 .1 2 on setting I t Ii 25 .2 .1 0 off instantaneous 6 8 10 4 12 3 15 off 2 x In 28 26 27 delay long time Ir 24 @ 6 Ir short time Isd 4 5 3 2.5 6 2 8 1.5 10 x Ir E60240A 18 19 20 21 22 23 .7 .6 .5 .4 29 30 x In tsd .4 .4 .3 .2 .3 .1 .2 .1 2 0 (s) on setting D C B A E 33 alarm @ 6 Ir short time Isd 4 5 3 2.5 6 2 8 1.5 10 x Ir Ig 35 tr 8 (s) 4 .9 12 16 .95 2 .98 1 20 24 1 .5 .8 I t off delay instantaneous 4 3 6 8 10 12 15 off 2 x In test tg F G H J Ii .4 .4 .3 .2 .3 .1 .2 .1 2 0 28 34 (s) on I t 35 off ground fault E60241B Micrologic 7.0 H control unit (1) These buttons include a LED indicating the active menu. long time Ir 24 25 26 27 .7 .6 .5 .4 04443728AA - 01/2009 3 2 1 .5 5 33 alarm @ 6 Ir tsd .4 .4 .3 .2 .3 .1 .2 .1 2 0 (s) on setting (A) 32 x In short time Isd 4 5 3 2.5 6 2 8 1.5 10 x Ir I∆n 31 tr 8 (s) 4 .9 12 16 .95 2 .98 1 20 24 1 .5 .8 I t off delay (ms) 230 10 140 20 30 60 instantaneous 4 3 6 8 10 12 15 off 2 x In test ∆t 7 Ii 28 34 350 800 35 earth leakage Setting procedure Dials b Dials are used to set Micrologic H protection thresholds and tripping delays for overloads, shortcircuits, ground faults and earth leakage. b If the set thresholds are overrun, these protection functions systematically trip the circuit breaker. Settings using the dials With the protective cover open, make all the necessary settings for your control unit. All fine adjustments are permanently stored in memory, unless the setting is modified using the adjustment dial. For remote settings using the communications option, see the "Remote settings" section in the "Com setup" menu under "History, maintenance and setup". DB119914 logic Micro 5.0 b Open the protective cover. logic Micro 5.0 b Make the necessary settings using the dials b The screen automatically displays the relevant curve b Check the set value on the screen, in absolute value in amperes (A) and in seconds (s). Settings using the keypad b The and buttons under the screen may be used for fine adjustments of the settings made using the dials. b All the settings not available via the dials are made in the same manner, using the keypad. E60252B Buttons b Buttons on the keypad are used for fine adjustments of the protection thresholds and tripping delays for overloads, short-circuits, ground faults and earth leakage. The value previously set using a dial automatically becomes the maximum value for the keypad settings. b They may also be used to activate other factorydisabled protection functions available on Micrologic H. These other protection functions are not accessible via the dials. DB119915 Discovering Micrologic H logic Micro 5.0 Caution! A new overload (long-time) or short-circuit (short-time and instantaneous) protection setting made using one of the dials: b deletes all the fine adjustments previously made using the keypad for the overload (long-time) and short-circuit (short-time and instantaneous) protection b does not affect the fine adjustments made using the keypad for ground-fault and earthleakage protection b does not affect any other settings made using the keypad. Similarly, a new ground-fault or earth-leakage protection setting made using one of the dials: b deletes all the fine adjustments previously made using the keypad for the ground-fault and earth-leakage protection b does not affect the fine adjustments made using the keypad for the overload (long-time) and short-circuit (short-time and instantaneous) protection b does not affect any other settings made using the keypad. 04443728AA - 01/2009 Setting procedure With the protective cover closed, it is not possible to set the protection functions. However, it is possible to set metering functions and alarms, as well as view all measurements, settings and histories. View the settings and measurements DB119916 E60254B Discovering Micrologic H logic Micro 5.0 DB119917 b Close the protective cover for the dials b Access to the dials is blocked and it is no longer possible to make fine adjustments using the keypad logic Micro 04443728AA - 01/2009 logic Micro 5.0 5.0 b If necessary, install a lead seal to protect the settings b Settings may be viewed at any time using the keypad. Caution! If you notice that the tab on the back of the protective cover has been broken off, contact the Schneider Electric after-sales support department to replace the cover. Setting Micrologic 5.0 H using the dials Consider a 2000 A circuit breaker. Set the thresholds DB119918 DB119919 Discovering Micrologic H Ir In = 2000 A long time .7 .6 .5 .4 .8 x In Ir = 0.5 x 2000 = 1000 A .9 .95 .98 1 Isd = 2 x 1000 = 2000 A short time Isd 4 5 3 2.5 6 2 8 1.5 10 x Ir 1 Ii Ii = 2 x 2000 = 4000 A instantaneous 6 8 10 4 12 3 15 off 2 x In setting In 2000 A In = A 2000 Set the time delays DB119910 See pages 22 and 24 for selection of the setting ranges. long time tr (s) 2 1 short time 4 .5 8 tr = 1 s 12 16 20 24 tsd = 0.2 s @ 6 Ir tsd .4 .4 .3 .2 .3 .1 .2 .1 2 0 (s) Time delays I2t ON curve t t t Ir Ir I t delay off I2t OFF curve DB119923 I2t OFF curve DB119922 Thresholds I2t ON curve DB119921 DB119920 on t tr Isd tr Isd tsd Ii 0 Ir: LT threshold Isd: ST pickup Ii: Instantaneous pickup tsd Ii I 0 I 0 I 0 I tr: LT tripping delay tsd: ST tripping delay 04443728AA - 01/2009 Setting Micrologic 6.0 H using the dials Consider a 2000 A circuit breaker. Set the thresholds DB119918 DB119924 Discovering Micrologic H In = 2000 A long time Ir .7 .6 .5 .4 .8 .9 .95 .98 1 x In Ir = 0.5 x 2000 = 1000 A short time Isd 4 5 3 2.5 6 2 8 1.5 10 x Ir 1 D C B A In 2000 A A 2000 E Isd = 2 x 1000 = 2000 A instantaneous 6 8 10 4 12 3 15 off 2 x In setting Ig In = Ii Ii = 2 x 2000 = 4000 A B F G H J Ig = 640 A ground fault See pages 22 to 26 for selection of the setting ranges. DB119925 Set the time delays long time tr (s) 2 1 short time 4 .5 tsd (s) on (s) t delay on 2 I t .2 .1 0 off tg = 0.2 s .2 .1 0 off Ir I2t OFF curve t t DB119923 Ir DB119922 t 2 I t tsd = 0.2 s Time delays I2t ON curve I2t OFF curve DB119921 DB119920 Thresholds I2t ON curve @ 6 Ir .4 .4 .3 .3 .2 .1 ground fault tr = 1 s 12 16 20 24 .4 .4 .3 .3 .2 .1 tg 8 tr tr Isd Isd tsd I t Ig 0 tr: LT tripping delay tsd: ST tripping delay I t 0 DB119929 0 DB119928 t I DB119927 DB119926 0 Ir: LT threshold Isd: ST pickup Ii: Instantaneous pickup tsd Ii Ii I t Ig tg tg 0 I Ig: ground-fault pickup 04443728AA - 01/2009 0 I 0 I tg: ground-fault tripping delay 0 I Setting Micrologic 7.0 H using the dials Consider a 2000 A circuit breaker. Set the thresholds DB119918 DB119930 Discovering Micrologic H In = 2000 A long time Ir .7 .6 .5 .4 .8 .9 .95 .98 1 x In Ir = 0.5 x 2000 = 1000 A short time Isd 4 5 3 2.5 6 2 8 1.5 10 x Ir 1 I∆n (A) A 2000 5 Isd = 2 x 1000 = 2000 A instantaneous 6 8 10 4 12 3 15 off 2 x In setting 3 2 1 .5 In 2000 A In = Ii Ii = 2 x 2000 = 4000 A I∆n = 1 A 7 10 20 30 earth leakage Set the time delays long time tr (s) 2 1 short time 8 4 .5 tsd @ 6 Ir .4 .4 .3 (s) .3 .2 .1 on ∆t (ms) tr = 1 s 12 16 20 24 2 I t delay 230 tsd = 0.2 s E60153A DB119931 See pages 22 to 26 for selection of the setting ranges. .2 .1 0 off ∆t = 140 ms 350 140 60 800 earth leakage t Ir I2t OFF curve t DB119923 Ir DB119922 t Time delays I2t ON curve I2t OFF curve DB119921 DB119920 Thresholds I2t ON curve t tr Isd tr Isd tsd Ii t I 0 I 0 tr: LT tripping delay tsd: ST tripping delay DB119933 DB119932 0 Ir: LT threshold Isd: ST pickup Ii: Instantaneous pickup tsd Ii I 0 I t I∆n ∆t 0 I I∆n: earth-leakage pickup 10 0 I ∆t: earth-leakage tripping delay 04443728AA - 01/2009 Discovering Micrologic H Selecting the type of neutral protection E51383A Selection dial on four-pole circuit breakers D+N/2 3 4P 3D 4P 4D On four-pole circuit breakers, it is possible to select the type of neutral protection for the fourth pole using the three-position dial on the circuit breaker: b no neutral protection 4P 3D b half neutral protection 3D + N/2 b full neutral protection 4P 4D The factory default setting is 3D + N/ 2. Caution! With the 4P 3D setting, the current in the neutral must not exceed the rated current of the circuit breaker. 04443728AA - 01/2009 11 Main menus Discovering Micrologic H The Micrologic H control unit offers access to the main screen and three menus: b the main screen displaying the continuous measurement of the phase currents (I1, I2, I3) and the neutral current (IN), if it exists b the "Metering" menu b the "History, maintenance and setup" menu b the "Protection" menu. E60101A Main screen 4260A 1 2 3 100 As long as no functions are activated, Micrologic H control units display in real time the current on the most heavily loaded phase. The number for that phase is presented in a square. The current in the neutral is displayed if the neutral CT is set as internal or external (see "Ineutral (A)" settings in the "Current protection" menu). 50 0 "Metering", "History, maintenance and setup" and "Protection" menus When a menu button is pressed, a presentation screen is displayed and the green LED on the button goes ON. E71931B b "Metering" menu I (A) U (V) P (kW) E (kWh) v press the screen or button to return to the main v press the button to return to the previous screen v whatever the screen displayed, if no further action is taken, the system returns to the main screen after a few minutes v the LED goes OFF on exiting the menu. Harmonic armoniq. 12 04443728AA - 01/2009 Main menus Discovering Micrologic H E71711A b "History, maintenance and setup" menu v press the screen Event history Contacts M2C / M6C Micrologic setup or button to return to the main v press the button to return to the previous screen v whatever the screen displayed, if no further action is taken, the system returns to the main screen after a few minutes v the LED goes OFF on exiting the menu. Metering setup Com. setup E71712A b "Protection" menu v press the screen Current protection or button to return to the main v press the button to return to the previous screen v whatever the screen displayed, if no further action is taken, the system returns to the main screen after a few minutes v the LED goes OFF on exiting the menu. Voltage protection Other protection Load shedding I Load shedding P b Saving settings E71657A When a setting is made in any of the three menus, the screen used to save the modification(s) may be accessed by pressing one of the three buttons , Do you want to save new settings? or . v select yes to save the modifications v select no to cancel and maintain the previous settings v this screen remains displayed until yes or no are selected. no yes 04443728AA - 01/2009 13 Discovering Micrologic H Metering Press the button to select the "Metering" menu. move the cursor down the screen or decrement a value. select an option in a list, confirm a selection or the value of a setting. indicates that the operator is in the "Metering" menu and returns to the previous screen. move the cursor up the screen or increment a value. return to the main screen. E71932B Current measurements I (A) U (V) P (kW) E (kWh) I (A) access to the following sections: Instant. Harmonic I1, I2, I3, IN I1, I2, I3, IN currents (depending on the type of system) Max Storing and reset of the maximum instantaneous currents I1, I2, I3, IN Demand current on the phases I1, I2, I3 and on IN (depending on the type of system) Max Storing and reset of the maximum demand currents. E71933B Demand I (A) U (V) P (kW) E (kWh) Harmonic Voltage measurements U (V) Instant. Instantaneous phase-to-phase U12, U23, U31 and phase-to-neutral V1N, V2N, V3N voltages (depending on the type of system) Average 3 Φ Average voltage U average of the phase-to-phase voltages. Unbal 3 Φ Unbalance voltage U unbal. of the phase-to-phase voltages. Phase rotation 14 access to the following sections: Phase sequence. 04443728AA - 01/2009 E71934B Discovering Micrologic H I (A) U (V) P (kW) E Metering Power measurements P (kW) access to the following sections: Instant. P, Q, S, (kWh) Power factor Harmonic Total active power P Total reactive power Q Total apparent power S Power factor PF Demand P, Q, S E71935B Max I (A) U (V) P (kW) E (kWh) Harmonic Storing and reset of the maximum demand power values Energy measurements E (kWh) access to the following sections: E total Total active energy E.P Total reactive energy E.Q Total apparent energy E.S E in Positive component of: b the total active energy E.P b the total reactive energy E.Q E out Negative component of: b the total active energy E.P b the total reactive energy E.Q Reset Energy 04443728AA - 01/2009 Demand values for the: b total active power P b total reactive power Q b total apparent power S Reset all the energy values to zero 15 E71936B Discovering Micrologic H I (A) U (V) P (kW) E Metering Harmonic measurements Harmonic access to the following sections: Waveform (kWh) Harmonic I1, 2, 3 Waveform capture for currents I1, I2 and I3 IN Waveform capture for the neutral current IN U12, 23, 31 Waveform capture for voltages U12, U23 and U31 Fundament. Measurement of the fundamental of currents I1, I2, I3 and IN I (A) U (V) P (W) I (%) U (%) I (%) U (%) Total harmonic distortion of voltages U12, U23 and U31 and V1N, V2N and V3N I (3, 5, 7,..., 31) Amplitude spectrum of odd current harmonics up to H31 U (3, 5, 7,..., 31) Amplitude spectrum of odd voltage harmonics up to H31 Measurement of the fundamental of voltages U12, U23 and U31 and V1N, V2N and V3N Measurement of the fundamental of active power P, reactive power Q and apparent power S. THD Total harmonic distortion of currents I1, I2, I3 and IN Total harmonic distortion of voltages U12, U23 and U31 and V1N, V2N and V3N thd Total harmonic distortion of currents I1, I2, I3 and IN FFT 16 04443728AA - 01/2009 E71937B Discovering Micrologic H U (V) P (kW) E (kWh) Metering Frequency measurement F (Hz) access to the frequency measurement Harmonic F (Hz) 04443728AA - 01/2009 17 Discovering Micrologic H History, maintenance and setup Press the E71711A Event history Contacts M2C / M6C move the cursor down the screen or decrement a value. move the cursor up the screen or increment a value. select an option in a list, confirm a selection or the value of a setting. indicates that the operator is in the "History, maintenance and setup" menu and returns to the previous screen. return to the main screen. Event history Event history The last ten faults recorded Metering setup Alarm history The last ten alarms recorded Com. setup Operation counter Number of operations (opening or closing) Contact wear Wear of the circuit-breaker main contacts Event history Contacts M2C / M6C Micrologic setup M2C / M6C Contacts Contacts M2C / M6C Alarm type Metering setup Setup Com. setup Reset 18 access to the following sections: Trip history Micrologic setup E71713A button to select the "History, maintenance and setup" menu. access to the following sections: Assignment of a protection alarm to an M2C or an M6C contact Latching mode for each M2C or M6C contact Reset of the M2C or M6C contacts 04443728AA - 01/2009 E71714A Discovering Micrologic H Event history Contacts M2C / M6C Micrologic setup History, maintenance and setup Micrologic setup Micrologic setup Language Setting of the date and time Date / time Com. setup Breaker selection Indication of the circuit-breaker type Power sign Setting the power sign System frequency E71715A Selection of the display language Metering setup VT ratio Event history Contacts M2C / M6C Micrologic setup Com. setup Event history Contacts M2C / M6C Select of the primary and secondary voltages on the instrument transformer Indication of the rated system frequency Metering setup Metering setup access to the following sections: System type b 3 phases, 3 wires, 3 CTs: method using two wattmeters b 3 phases, 4 wires, 3 CTs: method using three wattmeters b 3 phases, 4 wires, 4 CTs: method using three wattmeters with measurement of the neutral current. Current demand Selection of the calculation method and setting of the time interval for the calculation Power demand Selection of the calculation method and setting of the parameters for the calculation Sign convention Setting of the sign convention for the power factor and reactive power, i.e. IEEE, IEEE alternate or IEC (see page 106 to determine the sign convention) Metering setup E71716A access to the following sections: COM communications-option setup Com. setup access to the following sections: Com. parameter Setting of parameters for the COM communications option (address, baud rate, parity) Metering setup Remote settings Authorisation of access to settings via the COM communications option. Com. setup Remote control Authorisation of access to the circuit-breaker ON and OFF commands via the COM communications option. Micrologic setup 04443728AA - 01/2009 19 Discovering Micrologic H Protection Press the move the cursor down the screen or decrement a value move the cursor up the screen or increment a value select an option in a list, confirm a selection or the value of a setting indicates that the operator is in the "Protection" menu and returns to the previous screen E71712A button to select the "Protection" menu. return to the main screen Current protection Current protection Voltage protection Other protection I (A) Fine settings of the long-time I2t, short-time and instantaneous protection functions (A) Fine settings of the long-time Idmtl, short-time and instantaneous protection functions (A) Fine settings of the: b ground-fault (Micrologic 6.0 H) b earth-leakage (Micrologic 7.0 H) protection functions Load shedding I Idmtl Load shedding P I Ineutral (A) Selection of the type of neutral sensor and type of neutral protection I Setting of the I Alarm Iunbal 20 access to the following sections: Current protection (%) alarm Setting of the current-unbalance protection I unbal I1 max (A) Setting of the maximum-current protection I1 max I2 max (A) Setting of the maximum-current protection I2 max I3 max (A) Setting of the maximum-current protection I3 max IN max (A) Setting of the maximum-current protection IN max 04443728AA - 01/2009 E71719A Discovering Micrologic H Voltage protection Current protection E71720A Load shedding Umin (V) I Umax (V) P Uunbal (%) Other protection Current protection Other protection Voltage protection Other protection Load shedding E71721A Load shedding rPmax (W) I Fmin (Hz) P Fmax (Hz) Phase rotation Current protection Setting of the minimum-voltage protection U min. Setting of the maximum-voltage protection U max. Setting of the voltage-unbalance protection U unbal. access to the following sections: Setting of the reverse-power protection rP max Setting of the minimum-frequency protection F min Setting of the maximum-frequency protection F max Setting of the phase-rotation protection Load shedding depending on current Voltage protection Other protection E71722A access to the following sections: Voltage protection Voltage protection Other protection Load shedding Protection Load shedding Load shedding I Load shedding P I Access to load shedding and reconnection depending on current Load shedding depending on power Current protection Load shedding Voltage protection Other protection Load shedding I Load shedding P 04443728AA - 01/2009 P Access to load shedding and reconnection depending on power 21 Current protection Overview of functions I2t long-time protection For the default values, the setting ranges, increment steps and setting accuracies, see the technical appendix. The long-time protection function protects cables against overloads. This function is based on true rms measurements. It is possible to select either I2t long-time protection or Idmtl long-time protection. I2t long-time protection Long-time current setting Ir and standard tripping delay tr Micrologic control unit Accuracy Current setting tripping betweeen 1.05 and 1.20 Ir Time setting Time delay (s) Ir = In (*) x … tr at 1.5 x Ir tr at 6 x Ir tr at 7.2 x Ir 0 to -30% 0 to -20% 0 to -20% 5.0 H, 6.0 H and 7.0 H 0.4 0.5 0.6 0.7 0.8 other ranges or disable by changing rating plug 0,5 1 2 4 8 12.5 25 50 100 200 0.7 (1) 1 2 4 8 0.7 (2) 0.69 1.38 2.7 5.5 0.9 0.95 0.98 1 12 300 12 8.3 16 400 16 11 20 500 20 13.8 24 600 24 16.6 (*) In: circuit breaker rating (1) 0 to -40% (2) 0 to -60% b It is possible to enhance the Ir setting accuracy (reduced range) or disable the long-time protection function by using a different long-time rating plug. See the technical appendix "Changing the long-time rating plug". Thermal memory b The thermal memory continuously accounts for the amount of heat in the cables, both before and after tripping, whatever the value of the current (presence of an overload or not). The thermal memory optimises the long-time protection function of the circuit breaker by taking into account the temperature rise in the cables. b The thermal memory assumes a cable cooling time of approximately 15 minutes. 22 04443728AA - 01/2009 Current protection Overview of functions Idmtl long-time protection Idmtl Protection Long-time current setting Ir and Idmtl tripping delay tr Micrologic control unit Current setting Ir = In (*) x … tripping between 1.05 and 1.20 Ir Accuracy Time setting DT Time delay (s) 5.0 H, 6.0 H and 7.0 H 0.4 0.5 0.6 0.7 0.8 other ranges or disable by changing rating plug 0.9 0.95 0.98 1 0,5 1 2 4 8 12 16 20 24 tr at 1.5 x Ir tr at 6 x Ir tr at 7.2 x Ir tr at 10 x Ir 0 to -20% 0 to -20% 0 to -20% 0 to -20% 0.53 0.53 0.53 0.53 1 1 1 1 2 2 2 2 4 4 4 4 8 8 8 8 12 12 12 12 16 16 16 16 20 20 20 20 24 24 24 24 tr at 1.5 x Ir tr at 6 x Ir tr at 7.2 x Ir tr at 10 x Ir 0 to -30% 0 to -20% 0 to -20% 0 to -20% 1.9 0.5 0.7 (1) 0.7 (2) 3.8 1 0.88 0.8 7.6 2 1.77 1.43 15.2 4 3.54 2.86 30.4 8 7.08 5.73 45.5 12 10.6 8.59 60.7 16 14.16 11.46 75.8 20 17.7 14.33 91 24 21.2 17.19 tr at 1.5 x Ir tr at 6 x Ir tr at 7.2 x Ir tr at 10 x Ir 0 to -30% 0 to -20% 0 to -20% 0 to -20% 3.6 0.5 0.7 (1) 0.7 (2) 7.2 1 0.81 0.75 14.4 2 1.63 1.14 28.8 4 3.26 2.28 57.7 8 6.52 4.57 86.5 12 9.8 6.86 115.4 16 13.1 9.13 144.2 20 16.34 11.42 173.1 24 19.61 13.70 tr at 1.5 x Ir tr at 6 x Ir tr at 7.2 x Ir tr at 10 x Ir 0 to -30% 0 to -20% 0 to -20% 0 to -20% 12.5 0.7 (1) 0.7 (2) 0.7 (2) 25 1 0.69 0.7 (1) 50 2 1.38 0.7 (1) 100 4 2.7 1.41 200 8 5.5 2.82 300 12 8.3 4.24 400 16 11 5.45 500 20 13.8 7.06 600 24 16.6 8.48 tr at 1.5 x Ir tr at 6 x Ir tr at 7.2 x Ir tr at 10 x Ir 0 to -30% 0 to -20% 0 to -20% 0 to -20% 164.5 0.7 (1) 0.7 (2) 0.7 (2) 329 1 0.7 (1) 0.7 (2) 658 2 1.1 (1) 0.7 (1) 1316 4 1.42 0.7 (1) 2632 8 3.85 1.02 3950 12 5.78 1.53 5265 16 7.71 2.04 6581 20 9.64 2.56 7900 24 11.57 3.07 SIT Time delay (s) VIT Time delay (s) EIT Time delay (s) HVF Time delay (s) (*) In: circuit breaker rating (1) 0 to -40 % (2) 0 to -60 % b These curves with different slopes are used to improve: v discrimination with fuses positioned upstream (HV) and/or downstream v protection for certain types of loads b Five types of curves are available: v DT: definite time curve v SIT: standard inverse time curve (I0.5t) v VIT: very inverse time curve (It) v EIT: extremely inverse time curve (I2t) v HVF: compatible with high-voltage fuses (I4t). b Neutral protection Overload protection (long time) for the neutral is disabled if the Idmtl protection function is selected. However, the short-circuit protection (short time and instantaneous) remains operational. b Intermittent overloads As long as the Micrologic H control unit remains supplied with power, the effects of intermittent overloads on cables are calculated. If power is cut, temperature rise in cables is not calculated. b Circuit-breaker thermal limit For certain settings, the Idmtl curves may be limited by the I2t curve when the tripping delay tr is set to 24 seconds or by its thermal memory. The maximum I2t curve remains active for the phases and the neutral even when the Idmtl curves are activated. 04443728AA - 01/2009 23 Overview of functions Current protection Short-time and instantaneous protection For the default values, the setting ranges, increment steps and setting accuracies, see the technical appendix. Short-time protection b The short-time protection function protects the distribution system against impedant short-circuits b The short-time tripping delay and the I2t ON and I2t OFF options can be used to ensure discrimination with a downstream circuit breaker b This function carries out true rms measurements. b Use of I2t curves with short-time protection: v I2t OFF selected: the protection function implements a constant time curve v I2t ON selected: the protection function implements an I2t inverse-time curve up to 10 Ir. Above 10 Ir, the time curve is constant. For the characteristics and external wiring of the zone selective interlocking function, see the technical appendix on "Zone selective interlocking". b Zone selective interlocking (ZSI) The short-time and ground-fault protection functions enable time discrimination by delaying the upstream devices to provide the downstream devices the time required to clear the fault. Zone selective interlocking can be used to obtain total discrimination between circuit breakers using external wiring. b Intermittent faults are taken into account by Micrologic H and may lead to shorter tripping times than those set. Short-time pickup Isd and tripping delay tsd Micrologic control unit Pickup Time delay (ms) at 10 Ir I2t On or I2t Off Isd = Ir x ... accuracy ± 10 % setting tsd (max resettable time) tsd (max break time) 5.0 H, 6.0 H and 7.0 H 1.5 I2t Off I2t On 20 80 2 0 80 140 2.5 0.1 0.1 140 200 3 0.2 0.2 230 320 4 0.3 0.3 350 500 5 0.4 0.4 6 8 10 If the "without long-time protection" plug is used and the long-time protection function is disabled, the short-time pickup Isd is automatically multiplied by In instead of Ir as is the standard case. Instantaneous protection b The instantaneous-protection function protects the distribution system against solid short-circuits. Contrary to the short-time protection function, the tripping delay for instantaneous protection is not adjustable. The tripping order is sent to the circuit breaker as soon as current exceeds the set value, with a fixed time delay of 20 milliseconds. b This function carries out true rms measurements. Instantaneous pickup Ii Micrologic control unit Pickup Ii = In (*) x ... accuracy ± 10 % 5.0 H, 6.0 H and 7.0 H 2 3 4 6 8 10 12 15 OFF (*) In: circuit-breaker rating b Circuit breakers have two types of instantaneous protection: v adjustable instantaneous protection Ii v self-protection. Depending on the circuit breaker, the OFF position corresponds to the self-protection pickup. 24 04443728AA - 01/2009 Overview of functions Current protection Neutral protection For the default values, the setting ranges, increment steps and setting accuracies, see the technical appendix. Three-pole circuit breakers Protection of the neutral is possible on a three-pole circuit breaker by connecting an external sensor. Settings are made using the and buttons on the control unit. Micrologic control unit Setting Type of neutral No neutral protection Half neutral protection Full neutral protection Oversized neutral protection 5.0 H, 6.0 H and 7.0 H OFF N/2 N 1.6xN Description The distribution system does not require protection of the neutral conductor. The cross-sectional area of the neutral conductor is half that of the phase conductors. b The long-time current setting Ir for the neutral is equal to half the setting value b The short-time pickup Isd for the neutral is equal to half the setting value b The instantaneous pickup Ii for the neutral is equal to the setting value b For ground-fault protection (Micrologic 6.0 P), pickup Ig for the neutral is equal to the setting value. The cross-sectional area of the neutral conductor is equal to that of the phase conductors. b The long-time current setting Ir for the neutral is equal to the setting value b The short-time pickup Isd for the neutral is equal to the setting value b The instantaneous pickup Ii for the neutral is equal to the setting value b For ground-fault protection (Micrologic 6.0 P), pickup Ig for the neutral is equal to the setting value. In installations with a high level of third-order harmonic currents (or multiples thereof), the current in the neutral conductor may exceed that of the phase currents under steady-state conditions b The long-time current setting Ir for the neutral is 1.6 times that of the setting value b The short-time pickup Isd for the neutral is 1.6 times that of the setting value, but may not exceed 10 In to limit transients and selfprotect the installation b The instantaneous pickup Ii for the neutral is equal to the setting value b For ground-fault protection (Micrologic 6.0 P), pickup Ig for the neutral is equal to the setting value. Four-pole circuit breakers The initial protection setting is made using the dial on the neutral pole of the circuit breaker. The and buttons on the control unit may then be used for a more precise setting. The dial setting constitutes the upper limit for adjustments using the keypad. Micrologic control unit Setting Type of neutral No neutral protection Half neutral protection Full neutral protection 04443728AA - 01/2009 5.0 H, 6.0 H and 7.0 H OFF N/2 N Description The distribution system does not require protection of the neutral The cross-sectional area of the neutral conductor is half that of the phase conductors. b The long-time current setting Ir for the neutral is equal to half the setting value b The short-time pickup Isd for the neutral is equal to half the setting value b The instantaneous pickup Ii for the neutral is equal to the setting value The cross-sectional area of the neutral conductor is equal to that of the phase conductors. b The long-time current setting Ir for the neutral is equal to the setting value b The short-time pickup Isd for the neutral is equal to the setting value b The instantaneous pickup Ii for the neutral is equal to the setting value. 25 Overview of functions Current protection Ground-fault and earth-leakage protection For the default values, the setting ranges, increment steps and setting accuracies, see the technical appendix. Ground-fault protection on Micrologic 6.0 H b An ground fault in the protection conductors can provoke local temperature rise at the site of the fault or in the conductors. The purpose of the ground-fault protection function is to eliminate this type of fault. b There are two types of ground-fault protection. Type Description Residual Source Ground Return b The function determines the zero-phase sequence current, i. e. the vector sum of the phase and neutral currents (depending on the type of installation) b Using a special external sensor, this function directly measures the fault current returning to the transformer via the earth cable b It detects faults both upstream and downstream of the circuit breaker b The maximum distance between the sensor and the circuit breaker is ten metres. b Ground-fault and neutral protection are independent and can therefore be combined. Ground-fault pickup Ig and tripping delay tg The pickup and tripping-delay values can be set independently and are identical for both the residual and "source ground return" ground-fault protection functions. Micrologic control unit Pickup Ig = In (*) x ... accuracy ±10 % Time delay (ms) at In or 1200 A I2t On or I2t Off In y 400 A 400 A < In y 1200 A In > 1200 A settings I2t Off I2t On tg (max resettable time) tg (max. break time) 6.0 H A 0.3 0.2 500 A I2t Off 20 80 B 0.3 0.3 640 A 0 0.1 80 140 C 0.4 0.4 720 A 0.1 0.2 140 200 D 0.5 0.5 800 A 0.2 0.3 230 320 E 0.6 0.6 880 A 0.3 0.4 350 500 F 0.7 0.7 960 A 0.4 G 0.8 0.8 1040 A H 0.9 0.9 1120 A J 1 1 1200 A (*) In: circuit-breaker rating Earth-leakage protection on sur Micrologic 7.0 H b The earth-leakage protection function primarily protects people against indirect contact because an earth-leakage current can provoke an increase in the potential of the exposed conductive parts. The earth-leakage pickup value I∆n is displayed directly in amperes and the tripping delay follows a constant-time curve. b An external rectangular sensor is required for this function b This function is inoperative if the long-time rating plug is not installed v q Protected against nuisance tripping v kDC-component withstand class A up to 10 A. b If the optional external voltage-measurement input is used, a 24 V DC external power supply must be connected to Micrologic H (terminals F1-, F2+). Pickup value I∆n and tripping delay ∆t Micrologic control unit Pickup (A) Time delay (ms) settings 26 I∆n accuracy 0 to -20 % ∆t (max resettable time) ∆t (max. break time) 7.0 H 0.5 1 2 3 5 60 140 140 200 230 320 350 500 800 1000 7 10 20 30 04443728AA - 01/2009 Current protection Overview of functions I t Alarm, current unbalance, maximum current Operating principle For the pickup and dropout thresholds and time delays, see the technical appendix. DB119995 protection tripped by a maximum value 1: pickup threshold 2: pickup time delay 3: dropout threshold 4: dropout time delay b v v v v b For protection tripped by a maximum value, it is possible to set: a pickup threshold (1) that activates an alarm, a contact and/or tripping a pickup time delay (2) that steps in when the pickup threshold (1) is reached a dropout threshold (3) corresponding to deactivation of the alarm and/or contact a dropout time delay (4) that steps in when the dropout threshold (3) is reached The dropout threshold is always less than or equal to the pickup threshold. I t Alarm b The alarm function is tripped by the rms value of an earth-leakage current b This alarm signals an earth-leakage current under the pickup value and does not produce circuit-breaker tripping. Current-unbalance protection I unbal DB119996 b This protection is activated by an adjustable level of unbalance between the RMS values of the three phase currents. I E max I avg 0 I1 I2 I3 b From: v I avg is the average value of the rms currents of the three phases I avg = I1 + I2 + I3 3 v E max is the maximum difference between the current of each phase and I avg b Micrologic H uses the two values above to calculate the current unbalance: E max I unbal = I avg Maximum-current protection per phase Imax b Protection values may be set for each of the following currents: v I1 max: maximum current on phase 1 v I2 max: maximum current on phase 2 v I3 max: maximum current on phase 3 v IN max: maximum current in the neutral b This function calculates the rms demand value of the current for the given phase (I1, I2, I3) or the neutral (IN), over a sliding time interval. The time interval is the same as that for the calculation of the demand currents in the "Metering" menu. Settings are made in the "Metering setup" menu. Note: IN max protection does not take into account the neutral-protection setting (N, N/2, 1.6 x N, OFF). 04443728AA - 01/2009 27 Voltage protection Overview of functions Minimum voltage, maximum voltage, voltage unbalance Operating principle protection tripped by a minimum value protection tripped by a maximum value t t DB119997 DB119946 For the pickup and dropout thresholds and time delays, see the technical appendix. 1 3 3 2 1 4 4 0 U min 2 0 U max U unbal. 1: pickup threshold 2: pickup time delay 3: dropout threshold 4: dropout time delay b For protection tripped by a minimum or maximum value, it is possible to set: v a pickup threshold (1) that activates an alarm, a contact and/or tripping v a pickup time delay (2) that steps in when the pickup threshold (1) is reached v a dropout threshold (3) corresponding to deactivation of the alarm and/or contact v a dropout time delay (4) that steps in when the dropout threshold (3) is reached b For protection tripped by a minimum value, the dropout threshold is always greater than or equal to the pickup threshold b For protection tripped by a maximum value, the dropout threshold is always less than or equal to the pickup threshold b If both the minimum and maximum protection functions are activated at the same time, the minimum threshold is automatically limited to the value of the maximum and vice versa. Minimum-voltage protection U min If the voltage protection functions are activated and the voltage measurement inputs are still energised, it is impossible to reset and close the circuit breaker. b This function calculates the minimum rms value of the three phase-to-phase voltages b Protection is activated when at least one of the three phase-to-phase voltages (U12, U23, U31) is below the threshold set by the user b This protection function does not detect phase failure. Maximum-voltage protection U max b This function calculates the maximum rms value of the three phase-to-phase voltages b Protection is activated when the three phase-to-phase voltages (U12, U23, U31) are simultaneously above the threshold set by the user. Voltage-unbalance protection U unbal DB119998 This protection is activated by an adjustable level of unbalance between the rms values of the three phase-to-phase voltages. This function calculates the rms value of the unbalance between the three phase-tophase voltages. U E max U avg 0 U12 U23 U31 b From: v U avg is the average value of the rms voltages of the three phases U avg = U12 + U23 + U31 3 v E max: is the maximum difference between the voltage of each phase and U avg b Micrologic H uses the two values above to calculate the voltage unbalance: U unbal = 28 E max U avg 04443728AA - 01/2009 Other protection Overview of functions Reverse power, min. frequency, max. frequency, phase rotation Operating principle protection tripped by a minimum value protection tripped by a maximum value t t DB119950 DB119949 For the pickup and dropout thresholds and time delays, see the technical appendix. 1 2 3 3 4 4 0 F min 1 2 0 F max rP max 1: pickup threshold 2: pickup time delay 3: dropout threshold 4: dropout time delay b For protection tripped by a minimum or maximum value, it is possible to set: v a pickup threshold (1) that activates an alarm, a contact and/or tripping v a pickup time delay (2) that steps in when the pickup threshold (1) is reached v a dropout threshold (3) corresponding to deactivation of the alarm and/or contact v a dropout time delay (4) that steps in when the dropout threshold (3) is reached b For protection tripped by a minimum value, the dropout threshold is always greater than or equal to the pickup threshold b For protection tripped by a maximum value, the dropout threshold is always less than or equal to the pickup threshold b If both the minimum and maximum protection functions are activated at the same time, the minimum threshold is automatically limited to the value of the maximum and vice versa. Reverse-power protection rP max b This function calculates the value of the total active power on the three phases b The function is activated when the total active power of the three phases flows in the direction opposite that set by the user is greater than the pickup threshold (1) for a time greater than the time delay (2). Note: the direction of flow is set by the user in the "Power sign" section of the "Micrologic setup" menu under "History, maintenance and settings". b + corresponds to the normal direction of flow, i.e. from the top terminals on the circuit breaker to the bottom terminals b - is the opposite. If the voltage protection functions are activated and the voltage measurement inputs are still energised, it is impossible to reset and close the circuit breaker. Minimum and maximum-frequency protection F min. and F max These functions monitor the value of the frequency on the distribution system. Phase-rotation alarm This alarm is activated if two of the three phases are inverted. Note: the alarm is activated following a fixed 300-millisecond time delay. If one of the phases is absent, the alarm will not operate. If the 400 Hz frequency is set, the alarm cannot be activated. 04443728AA - 01/2009 29 Overview of functions Load shedding and reconnection For the pickup and dropout thresholds and time delays, see the technical appendix. Load shedding and reconnection depending on current DB119999 The pickup curve for load shedding and reconnection depending on current is parallel to the LT I2t and Idmtl curves. If a "without long-time protection" rating plug is installed, the load shedding/reconnection function based on current cannot be activated. b I2t protection: the neutral is taken into account b Idmtl: the neutral is not taken into account. This function does not trip the circuit breaker, but can be used to set off an alarm linked to an M2C or M6C contact (disconnection and reconnection of non-priority loads). The load-shedding and reconnection function is determined by thresholds and time delays. t Long-time protection curve 3 1 4 2 0 I 1: pickup threshold 2: pickup time delay 3: dropout threshold 4: dropout time delay The pickup threshold is always greater than or equal to the dropout threshold. Load shedding and reconnection depending on power DB119952 Load shedding and reconnection depending on power calculates the total active power on the three phases. This function does not trip the circuit breaker, but can be used to set off an alarm linked to an M2C or M6C contact (disconnection and reconnection of non-priority loads). The load-shedding and reconnection function is determined by thresholds and time delays. t 3 4 1 2 0 P 1: pickup threshold 2: pickup time delay 3: dropout threshold 4: dropout time delay The pickup threshold is always greater than or equal to the dropout threshold. 30 04443728AA - 01/2009 Measurements Overview of functions Current and voltage Instantaneous current For the setting ranges and measurement accuracies, see the technical appendix. Micrologic H control units offer two, non-exclusive measurement possibilities. b On the bargraph display on the main screen The instantaneous current of the most heavily loaded phase is automatically displayed in amperes for phases 1, 2, 3 and the neutral (depending on the neutral protection settings). The bargraph indicates the percent load of the three phases. b In the I inst. section of the instantaneous currents v display in amperes of the instantaneous currents I (rms) on phases I1, I2 and I3 and the neutral current IN, the ground-fault current Ig (Micrologic 6.0 H), the earth-leakage current I∆n (Micrologic 7.0 H) v the maximum instantaneous currents are displayed and stored in memory v the stored maximums can be reset at any time. Demand current b Display of the demand current on phases I1, I2, I3 and the neutral IN (depending on the type of distribution system) b Selection of the demand calculation method b Display of the interval over which the value is calculated b The maximum demand values are displayed and stored in memory b The stored maximums can be reset at any time. Note: the calculation method, the type of calculation window (fixed or sliding) and its duration may be set in the "Metering setup" menu under "History, maintenance and setup". Phase-to-neutral and phase-to-phase voltages Micrologic H offers different voltage measurements: b phase-to-phase voltages (rms) between phases U12, U23 and U31, displayed in volts b phase-to-neutral voltages (rms) between the phases and the neutral V1N, V2N and V3N, displayed in volts. Average voltage Average Uavg of the instantaneous voltages between phases U12, U23 and U31. Phase rotation Displays the phase sequence. Voltage unbalance To display the phase-to-neutral voltages, select the "3Φ 4w 4CT" option in "System type" in the "Metering setup" menu under "History, maintenance and setup". DB119998 Display of the unbalance Uunbal between the three phase-to-phase voltages, displayed as a percentage. U E max U avg 0 U12 U23 U31 b From: v U avg is the average value of the rms voltages of the three phases U avg = U12 + U23 + U31 3 v E max is the maximum difference between the voltage of each phase and U avg b Micrologic H uses the two values above to calculate the voltage unbalance U unbal = 04443728AA - 01/2009 E max U avg 31 Overview of functions Measurements Power, energy and frequency For the setting ranges and measurement accuracies, see the technical appendix. Instantaneous power and power factor Micrologic H offers a number of different measurements. b Total power measurements: v instantaneous active power P in kW v instantaneous reactive power Q in kvar v instantaneous apparent power S in kVA b Measurement of the power factor PF. Demand power b Display of the demand values for the active power P, reactive power Q and apparent power S b Selection of the demand calculation method b Display of the interval over which the value is calculated b The maximum demand values are displayed and stored in memory b The stored maximums can be reset at at any time. Note: b the calculation method, the type of calculation window (fixed or sliding) and its duration may be set in the "Metering setup" menu under "History, maintenance and setup". b the synchronisation function (Synchro.Com) is available only with the COM communication option; with this function, the demand power is determined on the basis of a signal synchronised by the communication module. b these settings apply to all demand powers (active power P, reactive power Q and apparent power S). If the settings are modified, the demand values are systematically recalculated. Energy Micrologic H offers a number of different measurements: b total energy: v total active energy E.P in kWh v total reactive energy E.Q in kvarh v total apparent energy E.S in kVAh b energy consumed (Energy in), positively incremented: v active energy E.P in kWh v reactive energy E.Q in kvarh b energy supplied (Energy out), negatively incremented: v active energy E.P in kWh v reactive energy E.Q in kvarh b energy values can be reset. Note: b the Energy in and Energy out values are incremented according to the power sign set in the "Metering setup" menu under "History, maintenance and setup". b as standard, the total calculated energy values are "absolute total values". They represent the sum of the energy in and out values: v EP = Σ EP in + Σ EP out v EQ = Σ EQ in + Σ EQ out b as an option (access exclusively via the COM communications option), energy can be calculated algebraically: v EP = Σ EP in - Σ EP out v EQ = Σ EQ in - Σ EQ out These values are called "signed" energies. Frequency The frequency of the distribution system is displayed in Hz. 32 04443728AA - 01/2009 Overview of functions Harmonic measurements Origin and effects Harmonics represent the most common power problem encountered in today’s electrical installations. When harmonics are present, the current or voltage waveform is distorted, i.e. it is no longer perfectly sinusoidal. A distorted current or voltage waveform disturbs the distribution of electrical power and power quality is not optimum. Definition of harmonics A periodic signal is a combination of: v the original sinusoidal signal at the fundamental frequency v other sinusoidal signals (the harmonics) with frequencies that are whole-number multiples of the fundamental frequency v a DC component, where applicable. Any periodic signal can therefore be represented as the sum of a number of terms: ∞ y(t) = Yo + Σ Yn DB120067 n=1 2 sin(nωt - ϕn) Fundamental 50 Hz I1 where: b Yo is the value of the DC component (generally equal to zero and considered as such hereinafter) b Yn is the rms value of the nth harmonic b ω is the angular frequency of the fundamental b ϕn is the phase displacement of the harmonic component at t = 0. Harmonic 3 (150 Hz) I3 A harmonic of order n, referred to as the nth harmonic, is the sinusoidal component of a signal with a frequency that is n times higher than the fundamental frequency. Harmonic 5 (250 Hz) I5 Harmonic 7 (350 Hz) Harmonic 9 (450 Hz) I7 I peak Total I rms I9 For example, the current and voltage waveforms distributed on the European electrical power grid have the following characteristics: b the fundamental frequency is 50 hertz (Hz) b the 2nd harmonic has a frequency of 100 Hz b the 3rd harmonic has a frequency of 150 Hz b the 4th harmonic has a frequency of 200 Hz b… A distorted waveform is the result of superimposing the various harmonics on the fundamental. The figure opposite shows a current distorted by harmonics. 04443728AA - 01/2009 33 Harmonic measurements Overview of functions DB120068 Origin and effects Standby generator set Ina Rectifiers, Arc furnaces, Welding machines Inb Variable-speed drives Ind Fluorescent or discharge lamps G Power-factor correction HV/LV A ∑ In and distorted voltage Harmonic disturbances transmitted to distribution system and other users Ine (do not cause harmonics) Devices using rectified current (televisions, computers, etc.) Linear loads Origin of harmonics Harmonics are caused by non-linear loads. A load is said to be non-linear when the current that it draws does not have the same waveform as the voltage. Typical examples of non-linear loads are those using power electronics. Such loads are increasingly numerous and their share in overall electrical consumption is growing. Examples are: b industrial equipment including welding machines, arc furnaces, induction furnaces, rectifiers, etc. b variable speed drives for asynchronous or DC motors b office equipment including computers, photocopy machines, fax machines, etc. b household equipment including televisions, microwave ovens, neon lighting, UPSs, etc. Non-linear phenomena may also be caused by the saturation of transformers and other equipment. Effects of harmonics The flow of harmonics in distribution systems can cause serious problems: b increased currents flowing in the system and overloads b additional losses and premature ageing of equipment b disturbances to loads due to voltage harmonics b disturbances in communication networks. The above effects can also have major financial impact due to: b the cost of equipment (premature replacement, oversizing) b increased power losses and the need to subscribe to higher power levels b losses in productivity (unnecessary tripping of protection devices). 34 04443728AA - 01/2009 Harmonic measurements Overview of functions Origin and effects What is an acceptable level of harmonics? The presence of harmonics in a distribution system should be assessed: b as a preventive measure, to gain information on the system and detect any drift b as a corrective measure, to diagnose a disturbance or check the effectiveness of a solution. Harmonic disturbances are subject to a number of standards and regulations: b compatibility standards designed for public utilities: v low voltage: IEC 61000-2-2 v medium voltage: IEC 61000-2-4 b electromagnetic compatibility (EMC) standards: v for loads drawing less than 16 A: IEC 61000-3-2 v for loads drawing more than 16 A: IEC 61000-3-4 b utility recommendations for installations. A number of international studies have produced data used to estimate the typical harmonic values encountered in utility distribution systems. Below is a table presenting the levels of harmonics that, in the opinion of many utility companies, should not be exceeded. Voltage individual harmonics of even and odd orders for: b low-voltage (LV) systems b medium-voltage (MV) systems b extra high voltage (EHV) systems. Odd harmonics (not multiples of 3) Odd harmonics (multiples of 3) Order n 5 7 11 13 17 19 23 25 LV 6 5 3.5 3 2 1,5 1.5 1.5 MV 6 5 3.5 3 2 1.5 1 1 EHV 2 2 1.5 1.5 1 1 0.7 0.7 Order n 3 9 15 21 >21 LV 5 1.5 0.3 0.2 0.2 MV 2.5 1.5 0.3 0.2 0.2 EHV 1.5 1 0,3 0.2 0.2 Even harmonics Order n 2 4 6 8 10 LV 2 1 0.5 0.5 0.5 12 >12 MV 1.5 1 0.5 0.2 0.2 0.2 0.2 EHV 1.5 1 0.5 0.2 0.2 0.2 0.2 Note: the individual harmonic content of a harmonic of order n is defined as the percentage of its rms value with respect to the rms value of the fundamental. This value is displayed on the graphic screen of the Micrologic H. Which harmonics are we concerned with? b Individual harmonics of odd orders at low frequency b Mainly order 3, 5, 7, 11 and 13. 04443728AA - 01/2009 35 Overview of functions Harmonic measurements Quality indicators Micrologic H control units can quantify and evaluate the harmonic distortion of current and voltage waves using the quality indicators listed below: b measurement of the fundamental signal b phase displacement of the fundamental signals b harmonic distortion THD and thd b cos ϕ b power factor b K factor b distortion power b distortion factor b crest factor b amplitude spectrum of even and odd harmonics up to order 31 b displacement spectrum with respect to V1N of even and odd harmonics up to order 31. These indicators are the indispensable tools used to determine any required corrective action. Access to quality indicators The quality indicators may be accessed on the Micrologic H screen and/or via the communication module. Quality indicator Measurement of the fundamental Phase displacement of the fundamental Harmonic distortion THD and thd Cos ϕ Power factor K factor Distortion power Distortion factor Crest factor Amplitude spectrum of odd harmonics up to order 31 Amplitude spectrum of even harmonics up to order 31 Displacement spectrum ith respect to V1N of even and odd harmonics up to order 31 36 On the Micrologic H screen Via the communication module b b - b b b - b b b b b b b b b - b - b 04443728AA - 01/2009 Overview of functions Harmonic measurements Quality indicators Fundamental Micrologic H control units can determine the value of the fundamental signals for: b currents: I1, I2, I3 and IN (in amperes) b voltages: v phase-to-neutral V1N, V2N, V3N (in volts) v phase-to-phase U12, U23, U31 (in volts) b power: v active P (kW) v reactive Q (kVAR) v apparent S (kVA). Current and voltage rms values b The rms current is the square root of the sum of the squares of the rms voltage values for each harmonic from the fundamental to an infinite order. ∞ Irms = 2 ΣI n=1 n b The rms voltage is the square root of the sum of the squares of the rms current values for each harmonic from the fundamental to an infinite order. ∞ Urms = 2 ΣU n=1 n Total harmonic distortion of current THD(I) The total harmonic distortion of current is the ratio of the square root of the sum of the squares of the harmonic currents from the 2nd to an infinite order to the fundamental current. ∞ THD(I) = ΣI 2 n=2 n Ifund THD(I) = ( )Irms Ifund 2 1 Note: b Ifund is the fundamental current. b Irms is the rms current. Distortion is expressed as a percentage and may exceed 100%. Defined by standard IEC 61000-2-2, total harmonic distortion THD(I) is a single value that expresses the distortion of the current flowing at a given point in a distribution system. b Micrologic H control units measure the THD for currents I1, I2, I3 and IN (in amperes), taking into account harmonic orders up to 31. b The total harmonic distortion of current characterises the distortion of the current waveform. b Loads causing distortion are identified by measuring the THD(I) on the incoming and outgoing circuits. b THD(I) values measured and the corresponding phenomena in an installation. v THD(I) under 10% is considered normal. There is no particular risk of malfunctions. v THD(I) between 10 and 50% signals a significant level of harmonic disturbance. There is a risk of temperature rise, which means that cables and sources must be oversized. v THD(I) greater than 50% signals major harmonic distortion. Malfunctions are probable. An in-depth analysis and the installation of compensation equipment is required. 04443728AA - 01/2009 37 Overview of functions Harmonic measurements Quality indicators Total harmonic distortion of voltage THD(U) The total harmonic distortion of voltage is the ratio of the square root of the sum of the squares of the harmonic voltages from the 2nd to an infinite order to the fundamental voltage. ∞ THD(U) = 2 ΣU n=2 n Ufund Note: Ufund is the fundamental voltage. Distortion is expressed as a percentage and may exceed 100 %. Defined by standard IEC 61000-2-2, total harmonic distortion THD(U) is a single value that expresses the distortion of the voltage at a given point in a distribution system. b Micrologic H control units measure the THD for: v phase-to-neutral voltages V1N, V2N, V3N (in volts) v phase-to-phase voltages U12, U23, U31 (in volts) taking into account harmonic orders up to 31. b Total harmonic distortion of voltage characterises the distortion of the voltage waveform. b THD(U) values measured and the corresponding phenomena in an installation: v THD(U) under 5 % is considered normal. There is no particular risk of malfunctions. v THD(U) between 5 and 8 % signals a significant level of harmonic disturbance. Malfunctions may occur. v THD(U) greater than 8 % signals major harmonic distortion. Malfunctions are probable. An in-depth analysis and the installation of compensation equipment is required. 38 04443728AA - 01/2009 Overview of functions Harmonic measurements Quality indicators Total harmonic distortion of current thd(I) The total harmonic distortion of current is the ratio of the square root of the sum of the squares of the harmonic currents from the 2nd to an infinite order to the rms current. ∞ thd(I) = 2 ΣI n=2 n Irms Note: Irms is the rms current. b Micrologic H control units measure the thd(I) for currents I1, I2, I3 and IN, taking into account harmonic orders up to 31. Defined by standard IEC 61000-2-2, total harmonic distortion thd(I) is a single value that expresses the distortion of the current flowing at a given point in a distribution system. Total harmonic distortion of voltage thd(U) The total harmonic distortion of voltage is the ratio of the square root of the sum of the squares of the harmonic voltages from the 2nd to an infinite order to the rms voltage. ∞ 2 n=2 n ΣU thd(U) = Urms Note: Urms is the rms voltage. b Micrologic H control units measure the thd(U) for: v phase-to-neutral voltages V1N, V2N, V3N (in volts) v phase-to-phase voltages U12, U23, U31 (in volts) taking into account harmonic orders up to H31. 04443728AA - 01/2009 39 Harmonic measurements Overview of functions Quality indicators Cos ϕ Cos ϕ is the ratio between the active power Pfund and the apparent power Sfund of the fundamental (1). cos ϕ = Pfund Sfund Note: b Pfund is the active power of the fundamental. b Sfund is the apparent power of the fundamental. Cos ϕ pertains exclusively to the fundamental frequency. Consequently, if there are harmonics, the value of the cos ϕ is not the same as that of the power factor. Power factor PF The power factor is the ratio between the active power P and the apparent power S. P S PF = Note: b P is the active power. b S is the apparent power. b the power factor must not be confused with the cos ϕ. The power factor is equal to the cos ϕ only when the signal is perfectly sinusoidal (no harmonics). b If the measured power factor is not equal to the cos ϕ (the power factor is lower), that may be an initial indication of harmonic disturbances in an installation. b The power factor PF is the means to evaluate the oversizing required for the power sources in an installation. b There is a relation between the power factor and the total harmonic distortion of current THD(I). When the voltage signal is (virtually) sinusoidal, the power factor may be roughly calculated using the equation below: PF z cos ϕ ( 2 ) 1 + thd(I) DB120035 When plotted, the above equation produces the graph below showing the PF to cos ϕ ratio, depending on the THD(I) PF/cos ϕ 1,2 1 0,8 0,6 0,4 0,2 0 40 50 100 150 THD(I) (%) 04443728AA - 01/2009 Overview of functions Harmonic measurements Quality indicators K factor The K factor is a quality indicator that indicates high-order harmonics. ∞ K factor = Σn n=2 2 I 2 n Irms Note: I is the amplitude of the current. The K factor is used to: b calculate temperature rise in the busbars b size the transformers for non-linear loads. Distortion power When there are harmonics, the relation S2 = P2 + Q2 is no longer valid. The distortion power D is defined by the equation below: D= S2 - P2 - Q2 Distortion factor The distortion factor is the relation between the power factor and the cos ϕ. Crest factor The crest factor is the relation between the peak value of the current or voltage and the corresponding rms value. Crest factor = Ipeak or crest factor = Irms Upeak Urms Note: b Irms is the rms current. b Urms is the rms voltage. b Possible values: v for a sinusoidal signal, the crest factor is equal to 2 v for a non-sinusoidal signal, the crest factor may be less than or greater than 2. b The crest factor is used to characterise the capacity of a source (UPS or generator) to supply high instantaneous currents. In particular, it draws attention to the presence of exceptional peak values with respect to the rms value. Computer equipment, for example, draws highly distorted current with a crest factor that can reach 3 or even 5. b Typical crest factors for the currents drawn by non-linear loads are much higher than 2. They are often equal to 1.5 or 2 and can reach 5 in critical cases. b A very high crest factor means that there can be high temporary overcurrents, which, when detected by the protective devices, may result in nuisance tripping. 04443728AA - 01/2009 41 Harmonic measurements Overview of functions Quality indicators FFT amplitude spectrum of odd harmonic orders from 3 up to 31 The communication module can be used to determine for each harmonic order up to 31: b the amplitude spectrum b the displacement spectrum with respect to the phaseto-neutral voltage V1N. DB120036 Each type of distorting device has its own harmonic-current "fingerprint", with different amplitudes and displacements. These values, in particular the amplitude for each harmonic order, are essential for the analysis of power quality. b FFT (Fast Fourier Transform) frequency spectrum The Micrologic H control unit can display the FFT amplitude spectrum of odd harmonics from the 3rd up to 31st. The Micrologic H control unit presents the amplitude of each harmonic order with respect to its frequency in the form of a histogram, called a spectral analysis. H% s(t) 1 100 t 33 20 0 1 2 3 4 5 6 h Above is an example of the spectral analysis of a square-wave signal. b Harmonic content of the nth harmonic for the phases I1, I2, I3 The individual harmonic content of a harmonic of order n is defined as the percentage of its rms value with respect to the rms value of the fundamental: in (%) = 100 Un In or un (%) = 100 Ufund Ifund Note : b I fund is the fundamental current. b U fund is the fundamental voltage b Harmonic content of the nth harmonic for neutral current. The individual harmonic content of a harmonic of order n is defined as the percentage of its rms value with respect to the rms value of the Neutral: in (%) = 100 Un In or un (%) = 100 UN rms IN rms Note: b I N rms is the Neutral rms current. b U N rms is the Neutral rms voltage. b The Micrologic H control unit indicates the FFT amplitude spectrum and the individual distortion level for harmonic orders from 3 to 31 for: v each current I1, I2, I3 and IN v each phase-to-phase voltage U12, U23 and U31. b The Micrologic H control unit also indicates for each current or voltage the corresponding level of total harmonic distortion THD (thd for Neutral current). 42 04443728AA - 01/2009 Overview of functions Harmonic measurements Waveform and waveform capture The communication module may be used to: b set up "Measurement" or "Protection" alarms b capture and analyse waveforms; capture may be tripped by the alarms b captured waveforms are recorded over 4 cycles (resolution of 64 points per cycle). Micrologic H control units can capture and store current and voltage waveforms using digital sampling techniques similar to those used in oscilloscopes. Waveform capture is the means to detect weak points in the system and the equipment. Using the information available in the captured waveform, it is possible to determine the level of harmonics as well as the direction and amplitude of the flow of harmonic power. b Users of Micrologic H control units can record manually via the keypad the following waveforms: v the four currents I1, I2, I3 and IN v the three phase-to-neutral voltages V1N, V2N and V3N. b Waveforms may be displayed on the graphic screen of Micrologic H control units. The recording takes place over one cycle with a measurement range of 0 to 1.5 In for current and 0 to 690 volts for voltage. The resolution is 64 points per cycle. 04443728AA - 01/2009 43 DB120000 Overview of functions Alarms For information on the communications option and the portable test kit, see the respective user guides. b An alarm may be viewed using: v the "Alarm history" menu v the COM communications option v the portable test kit. b The commands in the "Protection" menu are used to attribute a specific operating mode to each of the protection functions: v OFF: protection disabled v Alarm: the function issues an alarm, but does not trip the circuit breaker v Trip + Alarm: the function issues an alarm and trips the circuit breaker. b The protection functions against overloads (long time), short circuits (short time and instantaneous) and ground faults (ground-fault and earth-leakage currents) automatically result in tripping and cannot be deactivated (Trip mode only). b The "I t Alarm" and phase rotation alarms can be set exclusively to OFF or Alarm mode. b The other protection functions for current, voltage, power and frequency may be set to any of the three modes, OFF, Alarm or Trip + Alarm. b The load shedding and reconnection function may be set to ON or OFF. b The resettable alarms linked to device tripping are activated when the Ir, Isd/Ii or I t thresholds are overrun. The Ir alarm is reset one second after tripping. The Isd/Ii and t alarms are reset by pressing the button. Different pickup and dropout thresholds Pickup T1 Dropout Current protection Ir Isd / li T2 Ir, Isd, Ii, I alarms DB120001 Other alarms Identical pickup and dropout thresholds T1 Ir, Isd, Ii, I alarms Other alarms Alarm T2 Trip + Alarm b b b It b Delayed alarms are activated when the pickup and dropout thresholds are overrun and the corresponding time delays have expired. Current protection Pickup / Dropout Off I t Alarm I unbal I1 max I2 max I3 max IN max Voltage protection U min U max U unbal Other protection rP max F min F max Phase rotation Shedding/reconnection Current I Power P Off Alarm Trip + Alarm b b b b b b b b b b b b b b b b b Off Alarm Trip + Alarm b b b b b b b b b Off Alarm Trip + Alarm b b b b b b b b b b b Off On b b b b b History logging v Alarm mode: as soon as a given protection threshold is overrun, an alarm is recorded in the "Alarm history" v Trip mode: as soon as a given protection threshold is overrun, the circuit breaker trips and the fault is recorded in the "Trip history". b The "Protection setup" menu under "History, maintenance and setup" is used to enable or disable the Trip mode that is displayed in the protection-setting screens. On leaving the factory, the protection functions are set to Alarm mode. b The "M2C / M6C contacts" menu under "History, maintenance and setup" is used to link an M2C or M6C contact to an alarm. M2C and M6C contacts may not be used together. They require a 24 V external power supply. b The COM communications module can be used to transmit alarms to a supervisor. 44 04443728AA - 01/2009 Overview of functions Optional M2C and M6C contacts An alarm is issued if the Alarm or the Trip + Alarm mode was set for the given protection function. b Available types of contacts: v M2C: up to two contacts maximum, S1 and S2 v M6C: up to six contacts maximum, S1 to S6. b Current protection: b Voltage protection: b Other protection: v Ir v U min v F min v Isd v U max v F max v Ii v U unbal. v rP max v It v phase rotation. v I t Alarm v I unbal v I1 max v I2 max v I3 max v IN max. b Load shedding and reconnection: v current I v power P. b Latching settings: v non-latching contact: the contact remains activated as long as the fault that caused the alarm has not been cleared v latching contact: the contact remains activated until it is reset ("Reset menu") v time-delay contact: the contact remains activated for the duration of an adjustable time delay or until it is reset ("Reset menu"). v locked to 1: the contact is forced to 1 for an automation test v locked to 0: the contact is forced to 0 for an automation test. Caution! The M2C and M6C contacts require an auxiliary power supply. See the "Power supply" section in the technical appendix. 484 474 E60492A Wiring diagram for M2C contacts. S1 S2 471 DB120002 b Contact operating diagram for long-time protection Ir threshold t 25 23 21 19 17 11 9 7 5 3 1 T2 = 1 sec Ir LED Press Internal alarm S1 S2 S3 S4 24V 0V Non-latching contact Time-delay contact Latching contact Com Q1 Q2 Q3 S5 S6 delay 1 to 360 s Reset possible before end of delay Reset possible only after T2 = 1 s Isd, Ii or Ig pickup tsd or tg delay 24 22 20 18 16 14 12 8 10 6 4 DB120003 b Contact operating diagram for short-time, instantaneous and ground-fault protection 2 Isd, Ii or Ig LED Press Internal alarm Non-latching contact Time-delay contact Latching contact delay 1 to 360 s Reset possible before end of delay Reset possible only after pressing b Contact operating diagram for the other protection functions DB120004 E60491C Wiring diagram for M6C contacts T1 tr delay Pickup Dropout Internal alarm Non-latching contact Time-delay contact Latching contact 04443728AA - 01/2009 delay 1 to 360 s Reset possible before end of delay Reset possible only after T2 45 Overview of functions Event histories The interrupted currents are indicated in terms of their peak values. Trip history b The trip history is the means to display at any time the parameters measured during the last ten trips. b For each trip, the following parameters are recorded: v tripping cause v trip threshold v interrupted currents in amperes (only if an external power supply is present) for Ir, Isd/Ii, Ig or I∆n trips v date v time (hours, minutes and seconds). Alarm history b The alarm history is the means to display at any time the parameters measured during the last ten alarms. b For each alarm, the following parameters are recorded: v alarm cause v alarm threshold v date v time (hours, minutes and seconds). Operation counter This function is available only via the COM communications option. b Micrologic H: v stores and displays the total number of operations (incremented each time the circuit breaker opens) since the initial installation of the circuit breaker v stores and displays the total number of operations since the last reset. Contact wear indication This function can be used to: b Determine the condition of the most worn contact in the circuit breaker. A counter is displayed on the screen. The contacts must be inspected each time the counter reaches a hundred mark. The message "Not available or circuit breaker type not defined" is displayed if the type of circuit breaker has not been defined. In this case, see "Breaker selection" in the "Micrologic setup" menu under "History, maintenance and setup". b Reset the indicator after changing the main contacts. Reset is also carried out via "Breaker selection" in the "Micrologic setup" menu. Note: if the control unit is changed, the circuit breaker must be defined again. In this case, see "Breaker selection" in the "Micrologic setup" menu under "History, maintenance and setup". 46 04443728AA - 01/2009 Leds and display screens Overview of functions Overload bargraph on the main screen Alarm E89205A E60444A LED indicator Micrologic 5.0 H 4260A N 1 2 3 off 100 50 0 Signals overrun of the long-time current setting (1.125 x Ir). Signals the load level on each phase as a percentage of Ir. Fault-trip indications The procedure required to reclose the circuit-breaker following a fault trip is presented in the circuit-breaker user guide. b Control-unit status The circuit breaker has tripped. The control unit may or may not have an external power supply. The voltage measurement inputs may be connected upstream or downstream. Concerning the presence or absence of an external power supply, see the "Power supply" section in the technical appendix. E89206A Caution! The battery maintains the trip indications. If no indications are displayed, check the battery. Micrologic 5.0 H v control unit with an external power supply and with voltage measurement input connected upstream E89207B v control unit without an external power supply and with voltage measurement input connected downstream Micrologic 5.0 H Trip 22/11/1999 02:04:04 Umin 100V Reset by test/reset button A LED signals the type of fault (Ir, Isd, Ii, Ig, I∆n or Ap). 04443728AA - 01/2009 The type of fault is signalled by a LED and on the graphic display. 47 Leds and display screens Overview of functions b Fault-trip LEDs b The LEDs indicate the type of fault that tripped the circuit breaker b The LEDs are located in the upper part of the front panel (red Ir, Isd, Ii, Ig, I2n and Ap LEDs) b When activated, a LED remains ON until it is locally reset. A number of simultaneous causes may result in tripping. For example, a short-circuit and a distributionsystem voltage under a set value. The LED signalling the last fault chronologically is the only one to remain ON. E.g., the Ap LED may signal a voltage drop under a set value where the voltage drop was caused by a short-circuit. E89209A Micrologic 5.0 H b Isd, Ii led Micrologic 5.0 H Signals tripping following overrun of the long-time current setting Ir. Signals tripping following overrun of the short-time pickup Isd or the instantaneous pickup Ii. b Ig, I∆n led b Ap led Micrologic 5.0 H Signals tripping following overrun of the groundfault pickup Ig or the earth-leakage pickup I∆n. E89211A The self-protection function (excessive temperature, fault detected in ASIC power supply or instantaneous self-protection built into the device) trips the circuit breaker and turns the Ap LED on. E89210A E89208A b Ir led Micrologic 5.0 H Signals tripping due to: b self-protection function: v temperature v ASIC power supply v instantaneous pickup for circuit-breaker self protection b protection functions: v current unbalance I unbal v maximum current I1 max, I2 max, I3 max, IN max; v voltage unbalance U unbal v maximum voltage U max v minimum voltage U min v reverse power rP max v maximum frequency F max v minimum frequency F min. E60485A b LEDs on buttons to access the menus The activated LED indicates the menu for which the screen is displayed: v "Metering" v "History, maintenance and setup" v "Protection". 48 04443728AA - 01/2009 COM communications option Overview of functions E89212B Communication options Chassis COM module on chassis (optional) Circuit breaker COM module on circuit breaker (Infra Red) Digipact and ModBus are the indispensable elements when integrating Micrologic H in the Digivision and SMS Powerlogic installation-management systems which communicate via the BatiBus and ModBus protocols. External gateways are available for communication over other networks, including ProfiBus, Ethernet, etc. The communications option makes possible the following remote functions: b device identification: v address v device type v control-unit type v type of long-time rating plug b v v v v settings: reading of the dial settings fine adjustments within the range determined by the dial protection and alarm settings setup of the M2C / M6C contacts. Operating and maintenance aids b Protection and alarm values: v standard v set. Micrologic H control unit b Measurement values: v currents v voltages, frequencies, power, etc. b Fault values: v fault type v interrupted current. b v v v Histories and logs: trip history alarm history event history. b Indicators: v contact wear, counters, etc. v maintenance register. 04443728AA - 01/2009 49 Setup Setting up the optional M2C / M6C contacts Select the command Select an alarm S2 S1 S2 then Select an alarm. Confirm. then Select a contact. S2 E71604A Setup M2C / M6C E71603A E71602A b Select the latching mode S1 S2 50 Ir Set up each contact Select the command Setup S2 Ir then Select a contact. Contacts M2C / M6C E60226A Alarm type E60146A Note: an alarm may be selected if the "Alarm" or "Trip + Alarm" mode was selected during setup of the given protection function, in the "Protection" menu. E71601A Contacts M2C / M6C Alarm type S2 Mode Mode latching contact latching contact then Select a latching mode: b non-latching b latching b time-delay b locked to 1 b locked to 0. Confirm. 04443728AA - 01/2009 Setting up the optional M2C / M6C contacts Setup S2 Mode Mode Mode time delay time delay time delay Delay Delay Delay 360s 350s then Select the time delay. Reset E60389A E60442A M2C / M6C Confirm. M2C / M6C S1 0 S2 0 S1 1 S2 1 Reset (- / +) Reset (- / +) Reset the contacts to 0… 04443728AA - 01/2009 Adjust. 350s Reset the contacts to 0 Select the command M2C / M6C Contacts S2 E71607A S2 E71606A E71605A b Set the time delay for time-delay latching then or cancel the reset, then confirm. 51 Setting up the Micrologic control unit Setup Prior to setting up the protection functions or carrying out measurements, the following operations are required: b selection of the display language b entry of the date and time b entry of the circuit-breaker type b entry the power sign b selection of the transformation ratio between the primary and secondary windings if an auxiliary voltage transformer is installed b entry of the rated frequency. Select the command Select the display language E71938B E71608A Micrologic setup Language Select. Confirm. To return to English 1. Return to the main screen by pressing any of the three buttons 2. Select the "History, maintenance and setup" menu by pressing or press the button 3. Select the "Micrologic setup" menu by moving the cursor up on the first menu. Move the cursor down on the third menu and confirm by pressing followed by any of the three buttons Set the date and time Select the command Date / time If the time is set via a communications module, any previous manual setting is automatically erased. Date E71612B Date E71611B b Enter the date and time for time-stamping purposes in the trip and alarm histories. E71610B Micrologic setup 4. Select the "Language" menu by moving the cursor up on the first menu. Confirm by pressing Date 01 / 01 / 2000 01 / 01 / 2000 01 / 01 / 2000 Time Time Time 18 : 30 : 03 18 : 30 : 03 18 : 30 : 03 then Select the date. then Enter the day. then Enter the month. b The resolution of the time setting is 20 ms. 52 04443728AA - 01/2009 E71613B If time is not synchronised by the supervisor via the communication module, a drift of up to one hour per year may be observed. Date 01 / 01 / 2000 01 / 01 / 2000 Time Time 18 : 30 : 03 18 : 30 : 03 then Enter the year. Enter this code when setting up a new control unit on the circuit breaker. For a new device, the code is set to zero. Standard Standard UL Circuit breaker IEC Circuit breaker IEC Circuit breaker Masterpact Masterpact Masterpact type NT H1 03E7 03E7 H Logicxxxxxx H Logicxxxxxx H Logicxxxxxx Breaker selection then Choose and confirm. E71619C E71618C type NT H1 03E7 then Select the standard. When the main circuit-breaker contacts are replaced, this code must be reset to zero. Breaker selection Standard type NT08N Note this code if the control unit must be changed (example 03E7). Breaker selection E71617C Breaker selection E71616C E71615C The circuit-breaker code is required to identify the device and activate the contact-wear counter. Breaker selection then Select the circuit breaker. Breaker selection Standard Standard Standard IEC Circuit breaker IEC Circuit breaker IEC Circuit breaker Compact NS Compact NS Compact NS type 630b type 630b type 800 03E7 03E7 03E7 H Logicxxxxxx H Logicxxxxxx H Logicxxxxxx then Choose and confirm. 04443728AA - 01/2009 then Set the time in the same manner. Circuit-breaker selection Select the command Micrologic setup Breaker selection Date E71620BC Date and time are backed up by battery. E71614B Setting up the Micrologic control unit Setup then Select the type. then Choose and confirm. 53 Select the sign of the power Power sign Power sign P+ P- By default, Micrologic H uses P+ for the power flowing from top to bottom terminals. The selected direction of flow is valid for: b measurement of power and the power factor b measurement of energy b load shedding and reconnection depending on power. Select. P+ Confirm. Choose. E71624A VT ratio E71625A Enter the voltage-transformation ratio Select the command Micrologic setup VT ratio Power sign Primary If the supply voltage for the control unit exceeds 690 V, an external voltage transformer must be installed. To display the true voltage values, enter the transformation ratio between the primary and secondary voltages of the transformer. VT ratio E71626A Micrologic setup Power sign E71644B Select the command E71643B Setting up the Micrologic control unit E71642B Setup Primary VT ratio Primary 690V 690V 690V Secondary Secondary Secondary 690V 690V 690V Note that if Digipact display modules are used, the rated distribution-system voltage must be entered. then Select either the: b primary voltage b secondary voltage. If the phase-rotation protection function is activated, the 400 Hz frequency may not be selected. If the 400 Hz frequency is selected, the phase-rotation protection function is disabled. 400Hz System frequency 50 - 60Hz Choose. E71629A E71628A E71627A System frequency Select. 54 Go on to the next setting. Enter the rated frequency Select the command Micrologic setup System frequency then Enter the voltage. System frequency 50 - 60Hz Confirm. 04443728AA - 01/2009 Setting up the metering functions Setup Prior to setting up the protection functions or carrying out measurements, the following operations are required: b entry of the system type b selection of the calculation mode for the demand current b selection of the calculation mode for the demand power b select the power sign b select the sign convention for the power factor measurement. Select the system type Select the command The Micrologic H control unit offers three measurement options: b 3 phases, 3 wires, 3 CTs (method using two wattmeters) The currents on phases I1, I2 and I3 are displayed. The current on the neutral IN is not displayed. The phase-to-phase voltages U12, U23 and U31 are displayed. The phase-to-neutral voltages V1N, V2N and V3N are not displayed. b 3 phases, 4 wires, 3 CTs (method using three wattmeters) The currents on phases I1, I2 and I3 are displayed. The current on the neutral IN is not displayed. The phase-to-phase voltages U12, U23 and U31 are displayed. The phase-to-neutral voltages V1N, V2N and V3N are displayed. b 3 phases, 4 wires, 4 CTs (method using three wattmeters) The currents on phases I1, I2 and I3 are displayed. The current on the neutral IN is displayed. The phase-to-phase voltages U12, U23 and U31 are displayed. The phase-to-neutral voltages V1N, V2N and V3N are displayed. Metering setup System type Caution! The neutral current IN cannot be measured with the "3phase, 3-wire, 3-CT" and "3-phase, 4-wire, 3-CT" types. For a 3-pole device, the neutral, if distributed, must be connected to terminal VN of the Micrologic H control unit. See the "Overview of functions" section for information on the available types of measurements. 3Φ 3w 3CT 3Φ 4w 3CT Select. Select the command Thermal method based in I2t calculation. 3Φ 3w 3CT Confirm. Choose. Calculation method Current demand E89201C E89200C Current demand Current demand Window type sliding Calculation method block block interval interval Window type sliding Calculation method block interval Window type sliding Interval Interval Interval thermal 15 min Select. 04443728AA - 01/2009 System type Select the calculation method for demand current E71945C Metering setup Current demand System type E71632A System type E71631A E71630A Note: it is advised not to use the "3-phase, 4-wire, 4-CT" type of measurement unless the neutral is effectively connected to the control unit (four-pole circuit breaker with an external voltagemeasurement input). 15 min Adjust. 15 min Confirm. 55 Calculation method block interval Window type sliding Calculation method block interval Window type sliding Interval Interval Interval 20 min Select. 20 min Confirm. Adjust. Calculation method The synchronisation function "Synchro.Com" is available only with the COM communication option. With this function, the demand power is determined on the basis of a signal synchronised by the communication module. Fixed window: power demand is refreshed at the end of the time interval. Interval Interval Interval Confirm. Choose between: b thermal b block interval b sync. to comms E89220C Power demand 15 min 15 min Select. E89219C E89218C Window type sliding Calculation method block interval Window type sliding 15 min Sliding window: power demand is refreshed every 15 secondes. Power demand Calculation method block interval Window type sliding thermal Thermal method based on I2t calculation. Power demand Power demand E89221C E89216C Power demand E89217C Select the calculation method for demand power Select the command Power demand Calculation method block interval Window type sliding Calculation method block interval Window type fixed Calculation method block interval Window type fixed Interval Interval Interval 15 min Select. 56 Current demand Calculation method block interval Window type sliding 15 min Metering setup Power demand Current demand E89215C E89213C Current demand E89214C Setting up the metering functions Setup 15 min Choose between fixed or sliding. 15 min Confirm. 04443728AA - 01/2009 block interva Calculation method block interval Window type fixed Calculation method block interval Window type fixed Interval Interval Interval 20 min 20 min Select. Confirm. Adjust. Sign convention E89227B Sign convention E89226B Set up the power-factor calculation E89225B Metering setup Sign convention Power demand Calculation method block interval Window type fixed 15 min Select the command Power demand E98320A E89222C Power demand E89223C Setting up the metering functions Setup Sign convention See page 106 for the description of power factor sign conventions. IEEE Select. 04443728AA - 01/2009 IEEE alt. Choose between IEEE, IEEE alternate and IEC. IEEE alt. Confirm. 57 Setup Setting up the COM communications option Select the command When a COM communications option is used, it is necessary to: b set up the COM communications option b authorise remote setting of the Micrologic control unit b authorise remote control of the circuit breaker. Modbus Com Modbus Com E71725A Modbus Com E71724A As soon as the Digipact or Modbus communications option is connected, the control unit recognises it and displays the type of module on the graphic screen. Automatic time updates are possible only with the Modbus system. View and set up the communications option E71723A Com. setup Com. parameter Address Address 47 Address 45 45 Baud-rate Baud-rate Baud-rate 9600 9600 9600 Parity Parity Parity None None then Select an existing parameter. None Adjust. Confirm. Adjust all the other parameters for the communications option in the same manner. DIGIPACT MODBUS 1 - 255 1 - 47 9600 bauds 19200 bauds Even None (read only) Address Baud rate (read and set up) Parity The access code is a password that must be provided by the supervisor prior to accessing the Micrologic settings. Remote settings Remote settings Access permit Access permit Access permit No Yes Yes Access code Access code Access code 0000 then Select existing setting. 58 Remote settings E71728A E71726A Com. setup Remote settings E71727A Authorise remote setup of Micrologic Select the command 0000 Choose. 0000 Confirm. 04443728AA - 01/2009 Remote settings Access permit Access permit Yes Yes Yes Access code Access code Access code 1000 Select the existing access code setting. Confirm and proceed in the same manner for the other digits. Enter the first digit. Manual Remote control Auto Select Auto or Manual. E71734A E71733A E71732A Remote control Press enter. 04443728AA - 01/2009 1000 Authorise remote control of the circuit breaker Select the command It is possible to set circuit-breaker control to local only ("Manual") or to local and remote ("Auto"). Remote settings Access permit 0000 Com. setup Remote control Remote settings E71731A E71729A If the operator does not enter a specific access code, the default access code is 0000 and is requested by the supervisor. E71730A Setting up the COM communications option Setup Remote control Auto Confirm. 59 Fine adjustment of the long-time I2t, short-time and instantaneous settings using the keypad Protection settings E71738A Select the command. Current protection Trip 1000 A long-time current setting Ir 1.0 s long-time tripping delay tr 2000 A 0.2 s short-time pickup Isd short-time tripping delay tsd instantaneous pickup Ii I(A) E60149A E60275A 4000 A Trip Trip 1000 A 998 A 998 A 1.0 s 1.0 s 1.0 s 2000 A 0.2 s 2000 A 0.2 s 2000 A 0.2 s 4000 A 4000 A 4000 A I(A) Adjust the value. E60277A E60277A I(A) Trip then Select a setting. When all the settings have been adjusted, quit the screen by pressing one of the menu-access buttons. This saves the new values. I(A) E60276A (A) I(A) Trip Trip 998 A 998 A 1.0 s 1.0 s 2000 A 0.2 s 2000 A 0.2 s 4000 A 4000 A Confirm. E71657A I I(A) Do you want to save new settings? no yes then Adjust the other settings and confirm. 60 Quit the setting screen. Confirm. 04443728AA - 01/2009 Fine adjustment of the long-time Idmtl, short-time and instantaneous settings using the keypad Protection settings E71739A Current protection Idmtl Idmtl (A) Trip (A) long-time current setting Ir long-time tripping delay tr Idmtl protection: DT, SIT, VIT, EIT, HVF short-time pickup Isd short-time tripping delay tsd instantaneous pickup Ii 1000 A 1.0 s EIT 2000 A 0.2 s Idmtl (A) E60278A E71718A 4000 A Idmtl (A) E60151A Select the command Idmtl Trip Change I(A) settings with Idmtl(A)? No (A) Trip 1000 A 1000 A 1.0 s 1.0 s EIT VIT 2000 A 0.2 s 2000 A 0.2 s 4000 A 4000 A Yes (A) Idmtl (A) Trip Trip 1000 A 1000 A 1.0 s 1.0 s VIT VIT 2000 A 0.2 s 2000 A 0.2 s 4000 A 4000 A Change the setting. E71657A Idmtl Select a setting. E60280A E60279A Select yes. Do you want to save new settings? no yes Confirm. 04443728AA - 01/2009 Adjust the other settings. Confirm. 61 DB120019 Select the command Current protection I I (A) DB120020 Fine adjustment of the groundfault and earth-leakage protection setting using the keypad Protection settings (A) Trip I (A) Trip 1200A threshold 1200A 0.5s time delay 0.5s Trip (A) Trip 1198A 0.5s 0.5s 0.5s (A) Trip then Go to the next setting. Confirm. I (A) Trip I (A) Trip 1198A 1198A 1198A 0.4s 0.4s 0.4s Adjust the value. 62 Trip I 1198A DB120025 DB120024 I (A) 1198A Adjust the value. When all the settings have been adjusted, quit the screen by pressing one of the menu-access buttons. This saves the new values. I DB120023 (A) DB120025 I DB120022 DB120021 then Select a setting. Confirm. Quit the setting screen. 04443728AA - 01/2009 Select the command Using the keypad on the control unit Caution! Selection of the CT type determines the "Ineutral" protection in the "Protection" menu. b "none" disables the neutral protection. b "Internal" for a four-pole circuit breaker provides access to the N/2, N and OFF protection functions. b "External" for a three-pole circuit breaker provides access to the N/2, N, 1.6 x N and OFF protection functions. Four-pole Three-pole Neutral CT Neutral CT Internal External External Protection OFF: no neutral protection N / 2: half neutral protection N: full neutral protection OFF: no neutral protection N / 2: half neutral protection N: full neutral protection 1.6 x N: oversized neutral protection Choose between: b internal b external b none. Ineutral (A) Confirm. Ineutral (A) Neutral CT Neutral CT Neutral CT External External External Protection Protection then Ineutral (A) N/2 Choose. Confirm. E71657A Select. Protection N/2 OFF E89242B OFF OFF then Ineutral (A) Protection Protection OFF E89240B Possibles choices Ineutral (A) Neutral CT Select. Type of circuit breaker Ineutral (A) E89242B (A) Ineutral (A) E89241B Ineutral E89237B Current protection E89239B Setting the neutral protection E89238B Protection settings Neutral CT External Do you want to save new settings? no Protection N/2 Quit the setting screen. yes Confirm. Note: On four-pole circuit breakers, setting of the neutral using the keypad is limited by the dial setting. 04443728AA - 01/2009 63 I Setting the I , I unbal, I max, U min, U max, U unbal, rP max, F min, F max, and phase-rotation protection functions using the keypad Protection settings E71661B Select the corresponding menu Current protection I Alarm I unbal type of protection operating mode (Off, Alarm or Trip) Pick up pickup threshold (%) I1 max (A) I2 max (A) I3 max (A) pickup time delay Drop out dropout threshold dropout time delay Specific case for It alarm b Only the following choices are available: v On: activation of the alarm without fault tripping by the circuit breaker v Off: alarm disabled. IN max (A) Voltage protection Example: Maximum voltage setting (U max) Umax (V) Uunbal (%) Umax (V) Off Pick up Other protection Alarm Pick up 690V 5.00s 5.00s 5.00s (Hz) Phase rotation Umax (V) Off Pick up In trip mode, the dropout threshold is equal to the pickup threshold. The dropout time delay is fixed and equal to 1 second. Drop out 690V 0.50s Choose Off or Alarm. E89294B Fmax Drop out then Select the first setting. E60292B (Hz) Alarm Pick up 690V 690V 0.50s rPmax (W) Umax (V) 690V Drop out Fmin Umax (V) E60293B (V) E60171B Umin E60292B b Select Alarm mode 690V 0.50s Confirm. Umax (V) Trip Pick up 690V 690V 5.00s 5.00s Drop out 690V 0.50s then Select the first setting. 64 Choose Trip. 04443728AA - 01/2009 E89295B Umax (V) E89293B I Setting the I , I unbal, I max, U min, U max, U unbal, rP max, F min, F max, and phase-rotation protection functions using the keypad Protection settings Umax (V) Trip Pick up Do you want to set the protection to Trip mode? 690V 5.00s no yes Confirm. For protection tripped by a minimum value, the dropout threshold is always greater than or equal to the pickup threshold. If both the minimum and maximum protection values are activated, the minimum threshold is automatically limited to the value of the maximum and vice versa. Umax (V) E71667A Umax (V) E71666A b Set the pickup and dropout thresholds and time delays E71665A For protection tripped by a maximum value, the dropout threshold is always less than or equal to the pickup threshold. then Alarm Pick up Alarm Pick up Alarm Pick up 690V 690V 690V 5.00s 5.00s 5.00s Drop out 690V Drop out 685V Drop out 685V 0.50s 0.50s 0.50s Umax (V) Alarm Pick up Alarm Pick up 690V 690V 5.00s 5.00s Drop out Drop out 685V 685V 0.50s 0.50s then Set the other parameters. 04443728AA - 01/2009 Confirm. Quit the setting screen. E71657A Umax (V) E71668A E71668A then Select the existing Adjust. dropout threshold setting When all the settings have been made, quit the screen by pressing one of the menu-access buttons. This saves the new values. Umax (V) Do you want to save new settings? no yes Confirm 65 Setting load shedding / reconnection Select the command Load shedding I Load shedding P E71673B Protection settings Load shedding type of shedding (I or P) operating mode (On, Off) Pick up pickup threshold pickup time delay Drop out dropout threshold dropout time delay 66 04443728AA - 01/2009 Setting load shedding / reconnection Protection settings P Load shedding On On Pick up Pick up Pick up 1000kW 1000kW 3600s 3600s 3600s Drop out Confirm. Load shedding P E71676A P 1000kW 10s Select: b Off: load shedding disabled b On: load shedding enabled. E71675A Load shedding On On On Pick up Pick up Pick up P 1000kW 1000kW 1000kW 3600s 3600s 3600s Drop out 985kW Drop out 980kW 10s 10s then Select the existing dropout threshold. 10s Confirm. Adjust. P E71677A Load shedding Drop out 985kW Load shedding On On Pick up Pick up P 1000kW 1000kW 3600s 3600s Drop out Do you want to save new settings? Drop out 985kW 985kW 10s 10s then Set the other parameters. E71657A E71674A Load shedding Drop out 1000kW 10s then Select the first setting. E71677A P 1000kW 1000kW 10s 04443728AA - 01/2009 Load shedding Off Drop out When all the settings have been made, quit the screen by pressing one of the menu-access buttons. This saves the new values. P E71672A Load shedding E71671A E71670A Example: Take load shedding / reconnection depending on power. Quit the setting screen. no yes Confim. 67 Metering Current measurements Only the measurements for the phase (1, 2, 3) and neutral currents are displayed on the main screen. Continuous current measurement 3850A 1 2 3 E60187A 4260A E60185A E60184A The neutral current is displayed if the neutral CT is set to internal or external (see "Ineutral (A)" settings in the "Current protection" menu). The bargraph displays the value in amperes of the most heavily loaded phase. 3410A 1 2 3 1 2 3 100 100 100 50 50 50 0 0 0 The and buttons may be used to display the currents on the three phases. If the operator no longer uses the buttons for a few seconds, the bargraph returns to the display of the most heavily loaded phase. Measure an instantaneous-current value Select the command b Measure the instantaneous currents Instant. I inst. I inst. E60189A (A) E60188A I I1, I2, I3, IN Max then Select. I1 I2 = 3410 A = 4260 A I3 = 3850 A IN = 200 A I = 13 A View. b Check the instantaneous-current maximeter Imax E60191A E60190A I inst. instant. I1, I2, I3, IN Max I1 I2 = 5600 A = 4800 A I3 IN = 4700 A = 800 A I = 28 A Reset ( - / + ) Select. 68 then View. 04443728AA - 01/2009 Current measurements Metering b Reset the maximeter instant. I1 I2 = = 0A 0A I1 I2 = 5600 A = 4800 A I3 IN = = 0A 0A I3 IN = 4700 A = 800 A I = 0A I = 28 A Reset ( - / + ) Reset ( - / + ) Reset the maximeter or... cancel the reset. Measure a demand-current value Select the command Demand. b Measure the demand currents Demand Demand I1, I2, I3, IN Max Select. 04443728AA - 01/2009 E71679A (A) E71678A I Imax E60191A E60192A Imax instant. then 13min I1 = 3950 A I2 = 4270 A I3 = 3890 A IN = 340 A View. 69 Current measurements Metering Demand E71681A E71680A b Check the demand-current maximeter Imax Demand I1, I2, I3, IN 15min Max I1 = 4020 A I2 = 4450 A I3 = 4300 A IN = 600 A Reset ( - / +) then Select. View. Imax Imax Demand Demand 15min 15min I1 = 0A I1 = 4020 A I2 = 0A I2 = 4450 A I3 = 0A I3 = 4300 A IN = 0A IN = 600 A Reset ( - / +) Reset the maximeter or... 70 E71683A E71682A b Reset the maximeter Reset ( - / +) cancel the reset. 04443728AA - 01/2009 Select the command Measure an instantaneous-voltage value (U or V) U (V) U (V) E60193A Voltage measurements E89257B Metering Instant. The phase-to-neutral voltages are displayed if the selected system type is 3-phase, 4-wire (see page 55). Average 3Φ Unbal 3Φ Phase rotation Select. then Uinst. U12 = U23 = U31 = 400 V 404 V 401 V U1N = U2N = U3N = 230 V 229 V 233 V View. U (V) E71687A E89258B Measure the average voltage U avg Instant. Uavg. 3Φ Average 3Φ 402 V Unbal 3Φ Phase rotation Select. then View. U (V) Instant. E71689A E89259B Measure the voltage unbalance U unbal Uunbal 3Φ Average 3Φ 1% Unbal 3Φ Phase rotation Select. 04443728AA - 01/2009 then View. 71 Voltage measurements Metering U (V) Instant. E89261A E89260A Determine the phase sequence Phase rotation Average 3Φ Unbal 3Φ Phase rotation Select. 72 then ∆Φ : 1, 2, 3 View. 04443728AA - 01/2009 Power measurements Select the command Measure an instantaneous-power value (kW) Pinst. P, Q, S Instant. Power factor To ensure reliable power and power-factor measurements, the "Power sign" and "Sign convention" parameters must be set. Select. Pinst. E60199B P E71690A Metering then P (kW) 2180 Q (kvar) -650 S (kVA) 2280 View. Pinst. Power factor E71692A E71691A Measure the power factor P, Q, S Power factor Select. Demand View. Demand P, Q, S E71694B b Display the demand power E71693A (kW) then Measure a demand-power value Select the command P 1.00 Demand P (kW) 2350 Q (kvar) -820 S (kVA) 2640 Max Select. 04443728AA - 01/2009 then View. 73 Power measurements Metering Demand Demand P, Q, S Max Select. Pmax E71696B E71695A b Check the demand-power maximeter then P (kW) 2450 Q (kvar) -800 S (kVA) 2700 Reset (- / +) View. b Reset the maximeter Demand P (kW) 0 P (kW) 2450 Q (kvar) 0 Q (kvar) -800 S (kVA) 0 Reset (- / +) S (kVA) 2700 Reset (- / +) Reset the maximeter or... 74 Pmax E71698B E71697B Pmax Demand cancel the reset. 04443728AA - 01/2009 Energy measurements Select the command Measure the energy values E (kWh) E71699A Metering To ensure reliable energy measurements, the "Power sign" and "Sign convention" parameters must be set. Select the energy value to be measured: b total energy b energy in (positive component in the total energy) b energy out (negative component in the total energy). E (kWh) E total E in E out Reset energy then E in E out E71702B E total E71701B E71700B Select. E.P (kWh) 20168 E.P (kWh) +21320 E.P (kWh) 168 E.Q (kvarh) -2733 E.Q (kvarh) -2770 E.Q (kvarh) 33 E.S (kVAh) 22926 View the total energy values. View the energy in values. View the energy out values. E total E in Reset Energy Are you sure ? E out Reset Energy E71705A E (kWh) E71704A E71703A Reset the energy values To reset energy press enter No Yes Select. 04443728AA - 01/2009 then then Select yes or no. If yes, confirm. 75 Harmonic measurements Metering Waveform capture E89262B Harmonic Waveform Waveform E89263A Waveform capture for currents I1, I2 and I3 Select the command I1,2,3 I1,2,3 I1 IN U12,23,31 I2 I3 Select. then View. Waveform E89265A E89264B Waveform capture for neutral current IN IN I1,2,3 IN U12,23,31 Select. then View. Waveform E89267A E89266B Waveform capture for voltages U12, U23 and U31 U12,23,31 I1,2,3 IN U12,23,31 Select. 76 then View. 04443728AA - 01/2009 Harmonic measurements Metering Fundamentals E89268B Harmonic Fundament. Fundament I (A) U P (V) Select. E89269B Measure the fundamental currents Select the command I(A) Fundament (W) then I1 = 92 A I2 = 126 A I3 = 62 A IN = 1A View. Fundament I (A) U P (V) Select. E89271B E89270B Measure the fundamental voltages U(V) Fundament (W) then U12 = U21 = U31 = 281 V 333 V 276 V V1N = V2N = V3N = 139 V 185 V 190 V View. Fundament 04443728AA - 01/2009 P,Q,S Fundament I (A) U P (V) Select. E89273B E89272B Measure the fundamental power values (W) then P (kW) -9 Q (kvar) 47 S (kVA) 52 View. 77 Harmonic measurements Metering THD THD E89274A Harmonic E89275B Measure the total harmonic distortion (THD) of the current (with respect to fundamental) Select the command THD ITHD(%) I (%) I1 = 7.0 % U (%) I2 = 5.8 % I3 = 6.2 % IN = 2.1 % Select. then View. THD I (%) U (%) Select. 78 E89277B E89276A Measure the total harmonic distortion (THD) of the voltage (with respect to fundamental) then UTHD(%) U12 = U23 = U31 = 1.0 % 1.2 % 1.4 % V1N = V2N = V3N = 2.2 % 2.0 % 2.0 % View. 04443728AA - 01/2009 Harmonic measurements Metering thd thd E89278A Harmonic E89279B Measure the total harmonic distortion (thd) of the current (with respect to rms value) Select the command thd Ithd (%) I (%) I1 = 6.8 % U (%) I2 = 7.2 % I3 = 5.6 % IN = 8.1 % Select. then View. thd I (%) U (%) Select. 04443728AA - 01/2009 E89281B E89280A Measure the total harmonic distortion (thd) of the voltage (with respect to rms value) then Uthd (%) U12 = U23 = U31 = 1.0 % 1.2 % 1.8 % V1N = V2N = V3N = 2.0 % 2.8 % 2.6 % View. 79 Harmonic measurements Metering FFT amplitude spectrum FFT (3,5,7,….,31) I1 (3,.,31) U(3,5,7,….,31) I2 (3,.,31) I3 (3,.,31) IN (3,.,31) I Note : FFT= Fast Fourier Transform FFT E89284B FFT E89282A Harmonic E89283A Measure the amplitude spectrum of the current harmonics Select the command I1 FFT THD=6.3 8.0% 3 5 I1 FFT THD=6.3 5.0% 3 5 7 9 11 View the 5th harmonic... 80 E89286B E89285B then then Select. Select a current. 7 9 11 View the individual distortion of the 3rd harmonic I1 FFT THD=6.3 1.0% 23 25 27 29 31 ... and the other odd harmonics up to the 31st. 04443728AA - 01/2009 Harmonic measurements Metering FFT amplitude spectrum FFT (3,5,7,….,31) U12 (3,.,31) U(3,5,7,….,31) U23 (3,.,31) U31 (3,.,31) I E89289B FFT E89288A E89287A Measure the amplitude spectrum of the voltage harmonics U12 FFT THD=3.2 3.0% 3 5 U12 FFT THD=3.2 23.0% 3 5 7 9 11 View the 5th harmonic... 04443728AA - 01/2009 E89291B E89290B then then Select. Select a voltage. 7 9 11 View the individual distortion of the 3rd harmonic U12 FFT THD=3.2 0.0% 23 25 27 29 31 ... and the other odd harmonics up to the 31st. 81 Frequency measurements Select the command F (Hz) F (Hz) E60110A Metering 60.0 View. 82 04443728AA - 01/2009 04443728AA - 01/2009 83 Resetting fault indications Caution! If the circuit breaker remains closed and the Ap LED remains ON after the reset, open the circuit breaker and contact the after-sales support department. The fault indication is maintained until it is reset on the control panel. Press the reset button. E89292B Maintenance Micrologic 7.0 H Fault 22/11/1999 02:04:04 Umin 100V Reset by test/reset button 84 04443728AA - 01/2009 Select the command Trip history Event history Trip history Trip history E71707A Viewing the event histories E71706A Maintenance Trip 22/11/1999 02:04:04 Umin 160V U min 27/01/1999 Ir 27/06/1998 Ir 18/02/1998 then Select a fault. Alarm history Alarm history Alarm history I2 max 27/01/1999 Alarm E71709A E71708A Select the command Event history View. 27/01/1999 13:06:09 I2 max 3400A In max 23/03/1998 U max 12/02/1998 then Select an alarm. 04443728AA - 01/2009 View. 85 View and/or reset the operation counter Event history Operation counter Number of operations Total Number of operations Total 86 Total 17824 17824 Operations since last reset Operations since last reset Operations since last reset 6923 0 6923 Reset ( - / + ) Reset ( - / + ) Reset ( - / + ) then … or cancel the reset, then confirm. Check the wear of the contacts E71710C Select the command Contact wear is indicated from 0 to 900. The contacts should be inspected every time the counter reaches a multiple of 100. Number of operations 17824 Reset… Event history Contact wear E71737A Select the command E71736A Operation counter and contact-wear indicator E71735A Maintenance Contact wear 59 04443728AA - 01/2009 Checking/replacing the battery Maintenance E89248A Check the control-unit battery Micrologic 7.0 H 1 2 3 E71751A Press and hold down the test button on the control unit to check the LEDs and the battery. The battery information is displayed if the control unit is equipped with an external power supply or if the circuit breaker is ON. Battery fully charged Battery half charged No battery or must be replaced Replacing the control-unit battery 2. remove the battery DB119960 1. remove the battery cover DB119959 If the battery needs to be changed, order a new battery with the Schneider Electric catalogue number 33593. b Lithium battery b 1.2 AA, 3.6 V, 800 mA/h b Ambient temperature: 130°C. 04443728AA - 01/2009 + 4. put the cover back in place. Press the battery-test button to check the new battery. DB119962 DB119961 3. insert a new battery. Check the polarity. 87 Tests Maintenance Test the ground-fault (Micrologic 6.0 H) and earthleakage (Micrologic 7.0 H) protection functions The circuit breaker must be supplied with power and closed for the test. DB120037 Press the TEST button. The circuit breaker should trip. logic Micro 5.0 H If the circuit breaker does not trip, contact the after-sales support department. Mini test kit and portable test kit Refer to the manual that comes with the test kits. DB120039 DB120038 The test connector is used to connect the mini or the portable test kit to check that the control unit is operating correctly. logic Micro 5.0 H logic Micro 5.0 H 1 2 88 04443728AA - 01/2009 04443728AA - 01/2009 89 Tripping curves Technical appendix DB120005 Long-time I2t, short-time and instantaneous protection Micrologic 5.0 H, 6.0 H, 7.0 H DB119967 Long-time Idmtl, short-time and instantaneous protection Micrologic 5.0 H, 6.0 H, 7.0 H 90 04443728AA - 01/2009 Tripping curves Technical appendix DB119968 Ground-fault protection - Micrologic 6.0 H 04443728AA - 01/2009 91 Technical appendix Voltage measurements Micrologic H is equipped with a three-phase voltage power supply that, with respect to the distribution system, may be considered a delta load. The three-phase power supply reinjects voltage on an open phase. The voltage-protection functions react as indicated below. Minimum-voltage protection This function is based on the measurement of the phase-to-phase voltages. In diagrams 1, 3 and 4 on the next page, a fuse has blown. The control unit reinjects voltage on the failed phase and measures a phase-to-phase voltage higher than the actual voltage. The phase-to-neutral voltage should be zero, but the value measured is not zero. In diagram 2, the phase-to-neutral voltage is effectively zero and the measurement indicates zero as well. By limiting the pickup threshold of the minimum-voltage protection to the 80% 100% range of the rated distribution-system voltage, the differences between the real voltages and the measured values are not significant and Micrologic will operate under all circumstances in the expected manner. Voltage-unbalance protection This function is based on the measurement of the phase-to-phase voltages. In diagrams 1, 3 and 4 on the next page, a fuse has blown. The control unit reinjects voltage on the failed phase and measures a phase-to-phase voltage higher than the actual voltage. The phase-to-neutral voltage should be zero, but the value measured is not zero. In diagram 2, the phase-to-neutral voltage is effectively zero and the measurement indicates zero as well. By limiting the pickup threshold of the voltage-unbalance protection to the 0 % - 20 % range, the differences between the real voltages and the measured values are not significant and Micrologic will operate under all circumstances in the expected manner. Phase failure Detection of phase failure is not possible on the basis of the minimum-voltage and voltage-unbalance protection functions. The Micrologic power supply requires at least two phases (between 100 and 690 V). In diagrams 1, 3 and 4, if two phases have failed, Micrologic H measures for the three phases the value of the single voltage present (e.g. U12 = U23 = U31 = 410 V). 92 04443728AA - 01/2009 Technical appendix Voltage measurements DB120006 b Diagram 1 Fuses Contactor Motor Open DB120007 b Diagram 2 Contactor Fuses Motor Open b Diagram 3 DB120008 Contactor Motor Fuses Open DB120009 b Diagram 4 Load Fuses Other measurement and protection systems 04443728AA - 01/2009 93 Zone selective interlocking (ZSI) Technical appendix E60450B Operating principle 1 b A fault occurs at point A Downstream device no. 2 clears the fault and sends a signal to upstream device no. 1, which maintains the short-time tripping delay tsd or the ground-fault tripping delay tg to which it is set. b A fault occurs at point B Upstream device no. 1 detects the fault. In the absence of a signal from a downstream device, the set time delay is not taken into account and the device trips according to the zero setting. If it is connected to a device further upstream, it sends a signal to that device, which delays tripping according to its tsd or tg setting. B Note: on device no. 1, the tsd and tg tripping delays must not be set to zero because this would make discrimination impossible. 2 Connections between control units A A logic signal (0 or 5 volts) can be used for zone selective interlocking between the upstream and downstream circuit breakers. b Micrologic 5.0 A, 6.0 A, 7.0 A b Micrologic 5.0 P, 6.0 P, 7.0 P b Micrologic 5.0 H, 6.0 H, 7.0 H. An interface is available for connection to previous generations of trip units. Wiring Caution! lf the protection function is not used on circuit breakers equipped for ZSI protection, a jumper must be installed to short terminals Z3, Z4 and Z5. If the jumper is not installed, the short-time and ground-fault tripping delays are set to zero, whatever the position of the adjustment dial. DB120010 b Maximum impedance: 2.7 Ω / 300 metres b Capacity of connectors: 0.4 to 2.5 mm2 b Wires: single or multicore b Maximum length: 3000 metres b Limits to device interconnection: v the common ZSI - OUT (Z1) and the output ZSI - OUT (Z2) can be connected to a maximum of ten inputs v a maximum of 100 devices may be connected to the common ZSI - IN (Z3) and to an input ZSI - IN CR (Z4) or GF (Z5). upstream circuit-breaker Terminals Z1 to Z5 correspond to the identical indications on the circuit-breaker terminal blocks. 1 Z1 Z2 Z3 Z4 Z5 tsd = 0.3 point B 2 Z1 Z2 Z3 Z4 Z5 tsd = 0. 2 point A Z1 Z2 Z3 Z4 Z5 downstream circuit-breaker Z1 Z2 Z3 Z4 Z5 Test The portable test kit may be used to check the wiring and operation of the zone selective interlocking between a number of circuit breakers. 94 04443728AA - 01/2009 Technical appendix Power supply Caution! It is advised to use the AD power-supply module rather than an off-the-shelf 24 V power supply to ensure Class II insulation on the front panel of the Micrologic H control unit. AD power-supply module The AD power-supply module provides auxiliary 24 V DC power for the control-unit functions listed below: b graphic display: v device OFF or not supplied v the long-time, short-time, instantaneous and ground-fault protection functions operate under all circumstances on their own power b activation of an M2C programmable contact The AD power-supply module is required to assign an M2C programmable contact to an alarm. The power supply must have the following characteristics: b output voltage 24 V DC b DC ripple less than 5% b power rating 5 W / 5 VA b Dielectric withstand (input/output): 3 kV rms The AD power-supply module can supply the following voltages: b 110 V AC b 220 V AC b 380 V AC b 24 / 30 V DC b 48 / 60 V DC b 125 V DC. Battery module Use of a BAT battery module, mounted in series with the AD power-supply module, ensures a continous supply of 24 V DC power for 12 hours if the AD module fails. Wiring diagrams E60449A v reliable or backed-up auxiliary system L4 L3 Input AC 220V t OutpuC 24VD 0V AD 22 – G1 + G2 F2 + F1 - E60448A v auxiliary system without back-up H4 L4 L3 H3 Input AC 220V 0V AD 22 – t OutpuC 24VD G1 InputC 24VD - + 24V BAT G2 + H2 F1 - t OutpuC 24VD + H1 F2 + E60447A b Supply with the MC6 module 2 Q1 Q Q3 25 21 23 17 19 L4 L3 0V AD 22 – G1 04443728AA - 01/2009 M6C Input AC 220V t OutpuC 24VD + G2 95 Technical appendix Power supply Using the AD power-supply module The 24 V DC external power-supply (AD module) is required for certain operating configurations as indicated in the table below: b yes means the power supply is required b no means it is not required. Circuit breaker AC power present for Micrologic H M2C, M6C programmable-contacts option Display function Time-stamping function Circuit-breaker status indications and control via communications bus Identification, settings, operation and maintenance aids via communications bus Closed Open Open yes no no no yes no no no yes yes no no no no yes yes yes no b If the 24 V DC external power supply (AD module) is used, the maximum cable length between 24 V DC (G1, G2) and the control unit (F1-, F2+) must not exceed 10 metres. b The communications bus requires its own 24 V DC power source (E1, E2). This source is not the same as the 24 V DC external power-supply module (F1-, F2+). Selection of the voltage-measurement inputs The voltage-measurement inputs are standard equipment on the downstream connectors of the circuit breaker. It is possible to measure distribution-system voltage externally using the PTE external voltage-measurement input option. With this option, the internal voltage-measurement inputs are disconnected. The PTE option is required for voltages greater than 690 V (in which case a voltage transformer is required). When the PTE option is implemented, the supply circuit of the voltage-measurement input must be protected against short-circuits. Installed as close as possible to the busbars, this protection function is ensured by a P25M circuit breaker (1 A rating) with an auxiliary contact (cat. no. 21104 and 21117). The supply circuit of the voltage-measurement input is reserved exclusively for the control unit and must never be used to supply other circuits. 96 04443728AA - 01/2009 Changing the long-time rating plug Technical appendix Select the long-time rating plug A number of long-time rating plugs are available for Micrologic H control units. Part number Setting range for the Ir value 33542 33543 33544 33545 standard 0.4 to 1 x Ir low setting 0.4 to 0.8 x Ir high setting 0.8 to 1 x Ir without long-time protection b Ir = In for the short-time protection setting b Frequency protection not available b Load shedding / reconnection based on current not available Change the long-time rating plug Caution! Following any modifications to the long-time rating plug, all control-unit protection parameters must be checked. Proceed in the following manner. 1. open the circuit breaker 2. open the protective cover of the control unit DB119975 DB119974 3. completely remove the long-time rating plug screw logic Micro logic Micro 4. snap out the rating plug 6. refit the screw for the long-time rating plug 5.0 H 7. check and/or modify the control-unit settings DB119977 logic Micro 5.0 H 5. clip in the new rating plug DB119976 Caution! If no long-time rating plug is installed, the control unit continues to operate under the following downgraded conditions: b the long-time current setting Ir is 0.4 b the long-time tripping delay tr corresponds to the value indicated by the adjustment dial b the earth-leakage protection function is disabled b the voltage-measurement inputs are disconnected. 5.0 H logic Micro 5.0 H alarm long time .8 .9 .7 .95 .6 .98 .5 1 .4 x In Ir tr (s) 2 1 4 8 12 16 20 24 .5 @ 6 Ir alarm long time .8 .9 .7 .95 .6 .98 .5 1 .4 x In Ir 04443728AA - 01/2009 tr (s) 2 1 4 8 12 16 20 24 .5 @ 6 Ir 97 Technical appendix Thermal memory Thermal memory The thermal memory is the means to take into account temperature rise and cooling caused by changes in the flow of current in the conductors. These changes may be caused by: b repetitive motor starting b loads fluctuating near the long-time protection settings b repeated circuit-breaker closing on a fault. Control units with a thermal memory record the temperature rise caused by each overload, even very short ones. This information stored in the thermal memory reduces the tripping time. Micrologic control units and thermal memory All Micrologic control units are equipped as standard with a thermal memory. b For all protection functions, prior to tripping, the temperature-rise and cooling time constants are equal and depend depend on the tr tripping delay: v if the tripping delay is short, the time constant is low v if the tripping delay is long, the time constant is high. b For long-time protection, following tripping, the cooling curve is simulated by the control unit. Closing of the circuit breaker prior to the end of the time constant (approximately 15 minutes) reduces the tripping time indicated in the tripping curves. Short-time protection and intermittent faults For the short-time protection function, intermittent currents that do no provoke tripping are stored in the Micrologic H memory. This information is equivalent to the long-time thermal memory and reduces the tripping delay for the short-time protection. Following a trip, the short-time tsd tripping delay is reduced to the value of the minimum setting for 20 seconds. Ground-fault protection and intermittent faults The ground-fault protection implements the same function as the short-time protection (see above). 98 04443728AA - 01/2009 Technical appendix Data available via the COM communications option The COM communications option can be used to remotely access the Micrologic H measurement, setting, maintenance and protection values. Measurements 04443728AA - 01/2009 b Currents v instantaneous currents v maximum and minimum instantaneous currents v average instantaneous currents v instantaneous-current unbalance per phase v maximum and minimum instantaneous-current unbalance per phase b Demand current v demand current per phase v maximum and minimum demand current per phase since last reset v prediction of demand current per phase v time-stamping of demand-current maximums and minimums b Voltages v phase-to-neutral and phase-to-phase voltages v average phase-to-neutral and phase-to-phase voltages v phase-to-neutral and phase-to-phase voltage unbalance v maximum and minimum phase-to-neutral and phase-to-phase voltage unbalance b Active, reactive and apparent power per phase b Demand power v demand power per phase v maximum and minimum demand power per phase since last reset v maximum and minimum recommended demand power per phase v time-stamping of demand-power maximums and minimums b Energy v total active and reactive energy v positively incremented energy v negatively incremented energy b System frequency b Power factor b Reset date of demand currents, demand power and energy b Power quality indicators: v instantaneous measurements together with maximums and minimums: - fundamental apparent currents - fundamental phase-to-neutral and phase-to-phase voltages - fundamental rms currents - fundamental active, reactive and apparent power per phase and total - distortion power per phase and total - THD and thd of the phase-to-neutral and phase-to-phase voltages - THD and thd of the currents - phase angle between the voltages and the currents - K factors - peak voltages - peak currents - phase angle between the voltages - K factors averages v demand K factors: - demand K factors per phase - maximum demand K factor per phase since last reset - prediction of demand K factors - time-stamping of demand K factor maximums per phase v harmonics: - phase-to-neutral and phase-to-phase voltage harmonic amplitudes - current harmonic amplitudes - phase-to-neutral and phase-to-phase voltage harmonic phase angle - current harmonic phase angle v monitoring of electrical parameters v dates of last resets of minimums and maximums v waveform capture v event history file in the measurement module v minimum and maximum file with time-stamping v maintenance file in the measurement module - minimum and maximum reset counters with time-stamping - maximum demand-current reset counters with time-stamping - maximum demand-power reset counters with time-stamping - energy reset counters with time-stamping. 99 Technical appendix Data available via the COM communications option Setup / Maintenance b b b b b b b b b b b b b b b b b b b b Setting of the control-unit date and time Password for the measurement module Control-unit ID code Control-unit ID name Selection of the measurement calculation algorithm Sign convention for the active power Total-energy measurement mode Interval for the demand-current calculation window Power quality indication Demand-power calculation mode Interval for the demand-power calculation window Battery-charge indication Trip and alarm histories Operation counter and contact-wear indicator Assignment and setup of programmable contacts Event log and maintenance register Power factor sign conventions Monitoring parameters Monitoring priorities levels Waveform capture. Protection b b b b b b b b b b b 100 Circuit-breaker rated current Type of neutral protection Long-time I2t protection settings Long-time Idmtl protection settings Short-time protection settings Instantaneous-protection settings Ground-fault protection settings Earth-leakage protection settings Current-unbalance, It alarm and maximum-current protection settings Voltage-protection settings Setting for other protection functions. 04443728AA - 01/2009 Technical appendix Threshold and time-delay settings Long-time I2t and Idmtl protection Type Range Factory setting Type Range Factory setting Ir current setting tr tripping delay 0.4 to In 0.5 to 24 s maximum maximum Step 1A 0.5 s Accuracy 1.05 to 1.20 Ir -20 %, +0 % Short-time protection Isd pickup tsd tripping delay Type Ii pickup 1.5 to 10 Ir 0 - 0.1 - 0.2 - 0.3 - 0.4 s Range 2 to 15 In or off maximum maximum Step 10 A 0.1 s Instantaneous protection Factory setting maximum Step 10 A Accuracy ±10 % Accuracy ±10 % Ground-fault protection on Micrologic 6.0 H Type Ig pickup tg tripping delay Range depends on rating 0 - 0.1 - 0.2 - 0.3 - 0.4 s Factory setting maximum maximum Step 1A 0.1 s Accuracy ±10 % Earth-leakage protection on Micrologic 7.0 H Type I∆n pickup ∆t tripping delay Range 60 -140 - 230 - 350 - 800 ms Factory setting maximum maximum Step 0.1 A 1 setting Accuracy -20 %, +0 % Neutral protection Type Three-pole device Four-pole device 04443728AA - 01/2009 Range Off, N/2, N, 1.6 x N Off, N/2, N Factory setting off N/2 101 Technical appendix Threshold and time-delay settings Current protection Type Range Factory setting Step Accuracy 5 % to 60 % 5 % of pickup threshold 1 s to 40 s 10 s to 360 s 60 % pickup threshold 40 s 10 s 1% 1% 1s 1s -10 %, +0 % -10 %, +0 % -20 %, +0 % -20 %, +0 % 20 A to 1200 A 20 A to pickup threshold 1 s to 10 s 1 s to 10 s 120 A pickup threshold 10 s 1s 1A 1A 0.1 s 0.1 s ±15 % ±15 % -20 %, +0 % -20 %, +0 % Pickup threshold Dropout threshold Pickup time delay Dropout time delay 0.5 A to 30 A 0.5 A to pickup threshold 1 s to 10 s 1 s to 10 s 30 A pickup threshold 10 s 1s 0.1 A 0.1 A 0.1 s 0.1 s -20 %, +0 % -20 %, +0 % -20 %, +0 % -20 %, +0 % Pickup threshold Dropout threshold Pickup time delay Dropout time delay 0.2 In to In 0.2 In to pickup threshold 15 s to 1500 s 15 s to 3000 s In pickup threshold 1500 s 15 s 1A 1A 1s 1s ±6.6% ±6.6% -20 %, +0 % -20 %, +0 % Current unbalance I unbal Pickup threshold Dropout threshold Pickup time delay Dropout time delay Ground-fault I t alarm Pickup threshold Dropout threshold Pickup time delay Dropout time delay Earth-leakage I t alarm Maximum current I1 max, I 2 max, I 3 max, IN max Voltage protection Type Range Factory setting Step Accuracy 100 V pickup threshold 5V 5V -5 %, +0 % -5 %, +0 % Pickup time delay Dropout time delay 100 V to U max pickup threshold pickup threshold to U max pickup threshold 1.2 s to 5 s 1.2 s to 36 s 5s 1.2 s 0.1 s 0.1 s -0 %, +20 % -0 %, +20 % Pickup threshold Dropout threshold Pickup time delay Dropout time delay U min pickup threshold to 1200 V 100 V to pickup threshold 1.2 s to 5 s 1.2 s to 36 s 725 V pickup threshold 5s 1.2 s 5V 5V 0.1 s 0.1 s -0 %, +5 % -0 %, +5 % -0 %, +20 % -0 %, +20 % Pickup threshold Dropout threshold Pickup time delay Dropout time delay 2 % to 30 % 2 % to pickup threshold 1 s to 40 s 10 s to 360 s 30 % pickup threshold 40 s 10 s 1% 1% 1s 1s -20 %, +0 % -20 %, +0 % -20 %, +0 % -20 %, +0 % Minimum voltage U min Pickup threshold Dropout threshold Maximum voltage U max Voltage unbalance U unbal 102 04443728AA - 01/2009 Technical appendix Threshold and time-delay settings Other protection Type Range Factory setting Step Accuracy Pickup threshold Dropout threshold Pickup time delay Dropout time delay 5 to 500 kW 5 kW to pickup threshold 0.2 s to 20 s 1 s to 360 s 500 kW pickup threshold 20 s 1s 5 kW 5 kW 0.1 s 0.1 s ±2.5% ±2.5% -0 %, +20 % (1) -0 %, +20 % Pickup threshold Dropout threshold Pickup time delay Dropout time delay F min pickup threshold to 440 Hz 45 Hz to pickup threshold 1.2 s to 5 s 1.2 s to 36 s 65 Hz pickup threshold 5s 1.2 s 0.5 Hz 0.5 Hz 0.1 s 0.1 s ±0.5 Hz ±0.5 Hz -0 %, +20 % (2) -0 %, +20 % (2) Pickup threshold Dropout threshold 45 Hz pickup threshold 0.5 Hz 0.5 Hz ±0.5 Hz ±0.5 Hz Pickup time delay Dropout time delay 45 Hz to F max pickup threshold pickup threshold to F max pickup threshold 1.2 s to 5 s 1.2 s to 36 s 5s 1.2 s 0.1 s 0.1 s -0 %, +20 % (2) -0 %, +20 % (2) Pickup threshold Dropout threshold Pickup time delay Dropout time delay Ph1, Ph2, Ph3 or Ph1, Ph3, Ph2 pickup threshold 0.3 s 0.3 s Ph1, Ph2, Ph3 pickup threshold 0.3 s 0.3 s none none none none none none -0 %, +50 % -0 %, +50 % Reverse power rP max Maximum frequency F max Minimum frequency F min Phase rotation (1) +30 % on dial 0.2 s (2) +30 % up to 1.5 s Load shedding and reconnection Type Range Factory setting Step Accuracy Pickup threshold Dropout threshold Pickup time delay Dropout time delay 50 % to 100 % Ir 30 % Ir to shedding threshold 20 % to 80 % tr 10 s to 600 s 100 % Ir shedding threshold 80 % tr 10 s 1% 1% 1% 1s ±6 % ±6 % -20 %, +0 % -20 %, +0 % Pickup threshold Dropout threshold Pickup time delay Dropout time delay 200 kW to 10 000 kW 100 kW to shedding threshold 10 s to 3600 s 10 s to 3600 s 10 000 kW shedding threshold 3600 s 10 s 50 kW 50 kW 10 s 10 s ±2.5 % ±2.5 % -20 %, +0 % -20 %, +0 % Current I Power P 04443728AA - 01/2009 103 Technical appendix Other settings M2C / M6C contacts Type Time-delay latching time delay Range 1 - 360 s Factory setting Step Factory setting Step 360 s 1s Micrologic setup Type Language Date / time Circuit-breaker selection Neutral TC VT ratio Primary voltage Secondary voltage System frequency Range German English US English UK Italian French Spanish Chinese English UK 1s "no def" no TC min. 100 V, max. 1150 V min. 100 V, max. 690 V 50/60 Hz or 400 Hz 690 V 690 V 50/60 Hz 1v 1v Range Factory setting Step thermal or block interval fixed or sliding 5 to 60 minutes block interval thermal or block interval or sync. to comms fixed or sliding 5 to 60 minutes P+ P- block interval Measurement setup Type System type Demand-current Calculation method Type of window Calculation interval Demand-power Calculation method Type of window Calculation interval Power sign Sign convention 3 Φ, 3 w, 3 CT 3 Φ, 4 w, 3 CT 3 Φ, 4 w, 4 CT IEEE IEEE alternate IEC 3 Φ, 4 w, 4 CT sliding 15 minutes 1 minute sliding 15 minutes P+ (flow from top to bottom) IEEE 1 minute Communication setup Type Com parameter Adress Baud rate Parity Remote settings Access authorisation Access code Remote control Range MODBUS 1-47 9600 to 19200 bauds even none Factory setting 47 19200 bauds even yes / no 0000 to 9999 manual automatic yes 0000 automatic Range Factory setting Protection setup Type Current protection voltage protection other protection 104 alarm / trip / OFF OFF 04443728AA - 01/2009 Technical appendix Measurement setting ranges and accuracy b The accuracy of the current measurements depends on both the value displayed (or transmitted) and the circuit-breaker rating, where: Accuracy = 0.5 % In + 1.5 % reading Measurement setting ranges and accuracy Example: For a circuit breaker with a 4000 A rating and a current displayed on Micrologic of 49 A, the accuracy is: 0.5 % x 4000 + 1.5 % x 49 = ±21 A Type Range Accuracy at 25 °C I t max ground I t max earth leakage 0.05 x In to 20 x In 0.05 x In to 20 x In 0.05 x In to In 0 to 30 A 0.05 x In to 20 x In 0.05 x In to 20 x In 0.05 x In to In 0 to 30 A ±1.5 % ±1.5 % ±10 % ±1.5 % ±1.5 % ±1.5 % ±10 % ±1.5 % I1, I2, I3 IN I1 max, I2 max, I3 max IN max 0.05 x In to 20 x In 0.05 x In to 20 x In 0.05 x In to 20 x In 0.05 x In to 20 x In ±1.5 % ±1.5 % ±1.5 % ±1.5 % 170 to 1150 V 170 to 1150 V 170 to 1150 V ±0.5 % ±0.5 % ±0.5 % 100 to 1150 V 100 to 1150 V 100 to 1150 V ±0.5 % ±0.5 % ±0.5 % 170 to 1150 V ±0.5 % 0 to 100 % ±0.5 % 0.015 to 184 MW 0.015 to 184 Mvar 0.015 to 184 MVA ±2 % ±2 % ±2 % -1 to +1 ±2 % 0.015 to 184 MW 0.015 to 184 Mvar 0.015 to 184 MVA 0.015 to 184 MW 0.015 to 184 Mvar 0.015 to 184 MVA ±2 % ±2 % ±2 % ±2 % ±2 % ±2 % -1010 GWh to +1010 GWh -1010 Gvarh to +1010 Gvarh -1010 GVAh to +1010 GVAh ±2 % ±2 % ±2 % -1010 GWh to +1010 GWh -1010 Gvarh to +1010 Gvarh ±2 % ±2 % -1010 GWh to +1010 GWh -1010 Gvarh to +1010 Gvarh ±2 % ±2 % 45 Hz to 440 Hz ±0.1 % 0.005 x In to 1.5 x In 30 to 1150 V 0.15 to 13.8 kW ±1.5 % (1) ±0.5 % ±2 % 2 to 1000% 2 to 1000% ±5 % ±5 % I 0 to 1000% U 0 to 1000% (1) Over the range 0.7 x In to 1.5 x ±5 % ±5 % Instantaneous current I1, I2, I3 IN I t ground I t earth leakage I1 max, I2 max, I3 max IN max Demand current Phase-to-phase voltages U12 U23 U31 Phase-to-neutral voltages V1N V2N V3N Average voltage U avg Voltage unbalance U unbal Instantaneous power P Q S Power factor PF Demand power P Q S P max Q max S max Total energy E.P E.Q E.S Total energy in E.P E.Q Total energy out E.P E.Q Frequency F Fundamentals I U P, Q, S THD, thd I U FFT 04443728AA - 01/2009 105 Power factor sign conventions DB120011 Technical appendix Flow of active and reactive power P from load Q to load Q P to load Q to load P P to load Q from load DB119981 DB119980 DB119979 P from load Q from load 106 04443728AA - 01/2009 04443728AA - 01/2009 107 Index 108 A Activation Active, reactive, apparent energy Active, reactive, apparent power AD power-supply module Address Alarm Alarm history 27, 28, 29, 30, 44 32, 75 73 95 58 44, 47 46, 85 B Baud rate Buttons 58 5, 6 C Circuit-breaker selection COM communication option Contact Contact wear Control unit identification Control-unit battery Cos ϕ Crest factor Current demand calculation 53 49, 58, 99 45, 50 86 4 5, 87 40 41 31, 55 D Date and time Demand current Demand power Digipact Direction of power flow Distortion factor Distortion power Dropout DT 52 55, 69 32, 56 58 54 41 41 27, 28, 29, 30, 44 23, 61 E Earth-leakage protection Earth-leakage protection tripping delay ∆ EIT 26 26 23, 61 F F max F min Fault Frequency FTT Full neutral protection Fundamental Graphic display Ground-fault / Earth-leakage fault protection test Ground-fault protection 29, 64 29, 64 84 32, 54, 82 42, 80 25, 63 77 5 88 26 H Half neutral protection Harmonics History, setup and maintenance menu HVF 25, 63 33 13, 18 6, 23 I I t I t Alarm I avg I max I unbal I∆n pickup I2t Idmtl Ig pickup Ii pickup Infrared link Instantaneous current Instantaneous protection Ir current setting Isd pickup 62 27, 64 27 27, 64 64 26 22, 60 23, 61 26 24 5 68 24 22, 23 24 04443728AA - 01/2009 Index 04443728AA - 01/2009 K K factor 41 L Language Latching Lead seal for cover LEDs Load shedding / reconnection Long-time I2t protection Long-time Idmtl protection Long-time plug 52 45, 50 5 5, 47, 87 30, 66 22 23 5, 97 M M2C / M6C Main screen Maximum demand current Maximum demand power Maximum instantaneous current Metering menu ModBus 45, 50 12, 68 31, 70 32, 74 31, 68 13, 14 58 N Negatively incremented energy Neutral CT Neutral protection Neutral protection setting No neutral protection 32, 75 63 23, 25 11 25, 63 O Operation counter Oversized neutral protection 86 25, 63 P Parity Phase rotation Phase sequence Phase-to-neutral and phase-to-phase voltage Portable test kit Positively incremented energy Power demand calculation Power factor Power sign Power supply Protection menu 58 29, 31, 64 31, 72 31, 71 88 32, 75 32, 56 40 54 95 13, 20 R Remote control Remote settings Resetting the alarms and fault indications Resetting the contacts Resetting the energy values Resetting the maximum demand current values Resetting the maximum demand power values Resetting the maximum instantaneous current values Resetting the operation counter RMS current rms voltage rP max 59 58 84 45, 50 75 70 74 68 86 37 37 29, 64 S Self-protection Setting dials Short-time protection Sign convention SIT System frequency System type 5, 48 5, 6 24 106 23, 61 54 55 109 Index T Tab Temperature Test connector tg tripping delay THD thd Thermal memory tr tripping delay Transformation ratio Trip Trip history Tripping curves tsd tripping delay 7 22, 48, 98 5, 88 26 37, 78 39, 79 22, 98 22, 23 54 44 46, 85 90 24 U U max U min U unbal 28 28, 92 28, 71, 92 V VIT Voltage U avg 110 23, 61 28, 31 W Waveform Waveform capture 43 43, 76 Z Zone selective interlocking 94 04443728AA - 01/2009 Notes 04443728AA - 01/2009 111 Notes 112 04443728AA - 01/2009 35, rue Joseph Monier CS 30323 F - 92506 Rueil Malmaison Cedex RCS Nanterre 954 503 439 Capital social 896 313 776 € www.schneider-electric.com 04443728AA-04 As standards, specifications and designs change from time to time, please ask for confirmation of the information given in this publication. This document has been printed on ecological paper Design: Schneider Electric Photos: Schneider Electric Printed: © 2009 - Schneider Electric - Tous droits réservés Schneider Electric Industries SAS 01-2009