Download Rod-L M100AV/BV and M500AV/BV Manual

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HOD-L c e r t i f i e s t h a t this i n s t r u m e n t \,;as t i ~ o r o u g h l y i r ~ s ~ e c t ezdn d t e s l e d
2nd found t o m e e t i t s published specifications v;ien i t \.:as shi.a,?rd f r o m
t h e factory.
WARRANTY AND A S S E T A N C E
All ROD-L E l e c t r o n i c s ' i n s t r u m e n t s a r e w a r r a n t e d a g a i n s t d e f e c t s in m a t e r i a l s
and workmanship. T h i s w a r r a n t y a p p l i e s f o r o n e y e a r f r o m d a t e of delivery
t o t h e original purchaser. \Ce will r e p a i r o r r e p l a c e i n s t r u m e n t s which prove
l o b e d e f e c t i v e d u r i n g t h e w a r r a n t y period provided t h e y a r e r e t u r n e d t o
R O D L Electronics.
z
For prompt, e f f i c i e n t s e r v i c e of y o u r i n s t r u m e n t , s e n d i t d i r e c t l y t o R O D L
Electronics a l o n g w i t h & s t a t e m e n t describing t h e n a t u r e of t h e problem.
. A Return A u t h o r i z a t i o n N u m b e r m u s t b e obtained f r o m R O D L Electronics
before r e t u r n i n g a n y i n s t r u m e n t s f o r repair. T r a n s p o r t a t i o n must b e prepaid.
R O D L E l e c t r o n i c s will a s s u m e c o s t of s u r f a c e t r s n z p o r t a t i o n when returning
equipment t o c u s t o m e r . This w a r r a n t y i s void if t h e i n s t r u m e n t h a s been
modified o r s u b j e c t t o g r o s s misuse. No o t h e r w a r r a n t y i s expressed o r
implied. R O P L E l e c t r o n i c s i s not liable f o r consequential d a m s g e s .
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PAGE
INTRODUCTION
1- 1
1-1 0
1-1 2
1-1 3
1-14
1- 6
I- 1
General
Equipment Supplied
S t a r ~ d a r dVersions of Models
Special I'ersions of nlodels
Identification
Specifications
INSTALLATION A N D OPERATION
General
Unpacking a n d Inspection
Installation
Power Requirements
Power Cable
Initial Installation and Turn On
Storage
Repacking for shipmentm
O p e r a t i n g con;-rols
Safety Feature
O p e r a t i o n a l C h e c k f o r A C Hipot T e s t e r s
Total C u r r e n t Procedure
R e a l C u r r e n t (BV only procedure)
T e s t T i m e Adjustment Procedure
A u t o m a t i c T e s t Procedure
T H E O R Y O F OPERATION
T h e o r y of D i e l e c t r i c blithst;nd Testing
I n s t r u m e n t Functional Diagram
I n s t r u m e n t Assernbly Diagram
P o w e r Supply C i r c u i t
High Voltage Control/Slow Turn On
R e a l C u r r e n t D e t e c t Circuit
A 2 1 C o n t r o l Board
Total Current Detector/Compartors
S a f e t y Ground D e t e c t Circuit
Logic C o n t r o l
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TABLE O F CONTENTS
.-.~.
(Cont'd)
PAGE
SECTION
-
IV
hIAINTENANCE AND SERVICE
Introduction
Calibration
S e t Up
M e t e r hlechanical Zero
T o t a l C u r r e n t Roard Calibration
T e s t T i m e Calibration
A2-1 R e a l C u r r e n t Board Calibration
Offset Adjustment
T r i g g e r a n d M e t e r Calibration
Voltmeter Calibration
Fail Pots Calibration
S a f e t y Ground Ohms Calibration
R a m p R a t e Calibration
I n i t i a l C a l i b r a t i o n of A6-S5
R a m p R a t e Adjustment
Troubleshooting
T r o u b l e s h o o t i n g T r e e Problem List
TABLES, SPECIFICATION C H A R T S AND DIAGRAMS
.
T a b l e 1-1
F i g u r e 2-1
F i g u r e 2-2
T a b l e 2-1
F i g u r e 3-1
F i g u r e 3-2
F i g u r e 3-3
F i g u r e 3-4
F i g u r e 3-5
F i g u r e 3-6
F i g u r e 4-2
Specifications
R a c k h'lounting Kit Installation
C o n t r o l s and Indicators
C o n t r o l s and Indicators
F u n c t i o n a l Diagram
HV Amplitude C o n t r o l
R a m p Up C o n t r o l
General Control
Assembly Diagram
D e t a i l Assembly Diagram
Test Cycle Parameters
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TABLE OF
- CONTENTS
(Cont'd)
-
SECTION
V
PARTS LIST
A1 0 Po:ver Supply
A21 Control Logic
AE-SS A C Control
A2-1 Real Current
SCHEMATICS
Main Chassis Assembly
Wiring Diagram
A 1 0 Power Supply
A 1 0 Power Supply Assembly
A21 Control Logic
A 2 1 Control Logic Assembly
A G S 5 AC Control
A6-S5 A C Control Asse_mbly
A2-1 Real Current
A2-1 R e a l Current Assembly
OPTIONS
BV Theory of Operation
O t h e r Options
P a r t s List
Schematics
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INTRODUCTION
Section I
1-1
General
1-2
This p u b l i c a t i o n , v!hich p r o v i d e s o p e r a t i n g a n d s e r v i c i n g i n s t r u c t i o n s
f o r t h e R O G - L E l e c t r o n i c s irjodels A1100A\', B\' a n d A?500A\',
B\' A C Hipot T e s t e r s i s divided i n t o f i v e sections. S e c t i o n I
d e s c r i b e s t h e Instruments a n d l i s t s t h e i r s p e c i f i c a t i o n s . Section
I1 c o n t a i n s I n s t a l l a t i o n I n s t r u c t i o n s a n d O p e r a t i o n Procedures.
S e c t i o n 111 c o n t s i n s P r i n c i p l e s of O p e r a t i o n . S e c t i o n I\' c o n t a i n s
Service Instructions.
S e c t i o n 1' c o n t a i n s R e p l a c e m e n t P a r t s
I n f o r m a t i o n , P a r t s L o c a t i o n D i z g r s r n s i;nd Schr-matics.
1-3
Models M100, 500, A\', B\' A C Hipot T e s t e r s a r e high v o l t a g e
l e a k a g e a n d b r e a k d o w n t e s l e r s w i t h s f l f e t y g r o u n d continuity
test
c a p a b i l i t y i o r p e r f o r m a n c e of " d i e l e c t r i c w i t h s t a n d " t e s t s in
a c c o r d a n c e w i t h a p p l i c a b l e UL, CSA, VDE, BSI, IEC a n d s i m i l a r
s t a n d a r d s . T h e MIOOAV, 500AV tests a n d displays t o t a l c u r r e n t ,
w h i l e t h e MIOOBV, M500BV t e s t s a n d d i s p l a y s t o t a l c u r r e n t a n d
t h e r e s i s t i v e art of t h e A C c u r r e n t .
1-4
T h e " d i e l e c t r i c w i t h s t a n d " t e s t i s o n e o f m a n y t e s t s r e q u i r e d by
m a n y c e r t i f i c a t i o n a g e n c i e s (UL, CSA, VDE, BSI, IEC, e t c ) a s
p r o o f o f a n i n s t r u m e n t ' s a b i l i t y t o w i t h s t a n d A C p o w e r l i n e spikes
w i t h o u t b e c o m i n g a h a z a r d to i t s e l f o r t h e user. F o r e x a m p l e ,
lightning, d r a s t i c l o a d c h a n g e s o r power l i n e outages c a n place
s h o r t d u r a t i o n s p i k e s o n p o w e r l i n e s o f m a n y t i m e s nominal line
voltage.
1-5
S o m e s p e c i f i c e x a m p l e s of s a f e t y s t a n d a r d s requiring dielectric
w i t h s t a n d t e s t i n g i n c l u d e UL 45, UL 1 1 4 , U L 478, U L 506-508,
UL 5 4 4 , UL 674, U L 1 0 1 2 , UL 1 2 4 4 , I E C 380, IEC 348, MIL,STD
202, BS1 3361 a s w e l l as CSA 22.7, \'DE 0806, e t c . T h e s p e c i f i c
s t a n d a r d s h o u l d b e c o n s u l t e d f o r vo1teg.e r e q u i r e m e n t s a n d s p e c i f i c
t e s t procedures.
1-6
T h e ROD-L A C H i p o t T e s t e r s a p p l y high v o l t a g e to t h e .device
u n d e r test f o r a d u r a t i o n of t i m e p r e s e t f o r o n e s e c o n d t o 90
s e c o n d s . T h e d e v i c e u n d e r t e s t plugs i n t o t h e f r o n t panel t e s t
connector. T e s t l i m i t s f o r t o t a l c u r r e n t (and for Resistive part
of t h e A C c u r r e n t w i t h B\'s) a r e p r e s e t b y t h e user via a r e a r
p a n e l c o n t r o l . If t h e d e v i c e u n d e r t e s t i s d e f e c t i v e , a u t o m a t i c
c i r c u i t r y t u r n s o f f t h e high v o l t a g e , l i g h t s t h e F A L l a m p and
sets o f f a n a u d i b l e a l a r m .
This a u d i b l e a n d visual a l a r m must
be manually r e s e t ( m e e t s UL requirements).
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.
.,
-
-
1-7
.411 models i n c o r p o r a t e a rapid, a u t o m a t i c solid s t a t e e l e c t r o n i c shutdown c i r c u i t
t o turn off t l ~ ehigh v o l t a g e within t w o milliseconds a f t e r a breakdown fault.
To prevent t u r n on s u r g e s , t h e high v o l t a g e has an e l e c t r o n i c a l l y c o n t r o l l e d rate-ofrise.
1-8
F o r o p e r a t o r use, t h e t e s t c y c l e is fully a u t o m a t i c ; a c c i d e n t a l t e s t initiation
is prevented by u s e of r e c e s s e d s t a r t s w i t c h , f o r o p e r a t o r s a f e t y , a s e c u r i t y
"CHASSIS G R O U N D SENSE" v o l t a g e must b e c o n n e c t e d t o a s e c u r e Ion r e s i s t a n c e
point on t h e d e v i c e under t e s t . Without this c o n n e c t i o n , t h e t e s t b i l l not e n t e r
t h e ''READY" s t a t e . T h e "SAFETY GROUND" of t h e device u n d e r t e s t is
monitored a n d s t r a s e d e i e c t r o n i c a l l y . If e i t h e r t h e "SAFETY GROUND" o r
t h e "CHASSIS G R O U N D SENSE" c o n n e c t i o n fails during t h e t e s t , t h e HIPOT
TESTER a u t o m a t i c a l l y s h u t s down t h e high v o l t a g e a n d a c t u a t e s visual e n d audible
alarms.
1-9
The ROD-L A C t e s t e r s a r e c o m p l e t e l y s e l f c o n t a i n e d r u g g e d i n s t r u m e n t s designed
f o r l a b o r a t o r y a n d p r o d u c t i o n t e s t i n g e n v i r o m e n t s . AU A C units a r e very s i m i l a r
in operation a n d c o n s t r u c t i o n . T h e p r i m a r y e x c e p t i o n i s t h a t BV model m e a s u r e s
t h e resistive p a r t of A C t o t a l c u r r e n t . Externally, t h e BV model h a s a n e x t r a
c o n t r o l on t h e f r o n t a n d r e a r p a n e l s ( s e e f i g u r e 2-2). InternaUy, t h e s t a n d a r d
BV has f i v e P C B a s s e m b l i e s (A2-1, A6-S5, A7-AV, A10, A21) a n d t h e s t a n d a r d
AV has four P C B a s s e m b l i e s (A6-S5, A7-AV, AID, A21).
. .
1-10
EQUIPMENT S U P P L I E S
1-1 1
T h e R O D L H l P O T TESTER i s c o m p r i s e d of t h e following:
i
a.
1-1 2
H l P O T TESTER, R O D L Model MIOOAV, MIOOBV, M500AV o r hl500BV.
b.
Six f o o t p o w e r c o r d , t h r e e pronged.
c.
Thirty-six i n c h (36") ground cable.
d.
This manual.
e.
Extra i n p u t l i n e fuses.
-
STANDARD VERSIONS O F NODELS
T h e s t a n d a r d A C HIPOT TESTER i s a v a i l a b l e with a full s c a l e test v o l t a g e of
1500 VAC, 2800 V A C o r 5000 VAC. A m m e t e r s with F.S. up t o 333mA a r e available
depending o n t h e Model. S t a n d a r d F.S. v a l u e s f o r t h e a m m e t e r a r e 10, 25,40,
50, 100, 200 a n d 333mA. F o r t h e NlOO models t h e maximum F.S. values a r e
50mA for t h e 1 5 0 0 VAC unit, 40mA f o r t h e 2800 VAC a n d 25mA f o r t h e 5000 VAC.
F o r t h e n1500 m o d e l t h e maximum F.S. v e l u e s a r e 333mA f o r t h e 1500 VAC, 200rnA
f o r t h e 2800 a n d 1 0 0 m A f o r t h e 5000 VAC.
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I n s t r u m e n t s with non-standard t e s t vollages and a m m e l e r s a r e
c o n s i d e r e d special versions of t h e basic models.
In these
a p p l i c a t i o n s , t h e c u s t o m e r specifies t h e voltege a n d a m m e t e r
full s c a l e values. T h e Hipot T e s t e r h i ~ hvoll8ge F.S. rating and
from the hiodel number
t h e a m m e t e r F.S. r a t i n g a r e readable
c o d e on t h e serial number label on t h e r.ea; panel.
An e x ~ m p l e
of t h e model number f o r m a t is a s follows:
:,;lhcre N.X i r p r e s e n t s F.S. kilovolts t n d
in m A .
%%Z ri.p;.e.ients FS c ~ i r r e n t
1-15
T h e ROD-L AC Hipot T e s t e r s a r e identified by a hiodel Number
a s d e s c r i b e d in paragraph 1-13 and a s e r i a l number (see figure
2-2). T h e s e r i a l number is a m a n u f a c t u r e r identification of t h e
instrument.
1-16
SPECIFICATIONS
T a b l e 1-1 l i s t s t h e most important e l e c t r i c a l , environmental and
p h y s i c a l specifications o f t h e Hipot Tcsters.
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. .
T a b l e 1-1 SI'ECIFICA'TIONS
T e s t Voltage and C u r r e n t
User a d j u s t a b l e up t o 5000 \'AC RMS, 50160
Hz, 0-333rnA.
Note: Voltage and c u r r e n t range combinations
a r e d e t a i l e d in paragraphs 1-12 a n d 1-1 3.
-
High \!oltage Shutdown
Within 2ms a f t e r a breakdojvn i e u l t is d e t e c t e d
( e l e c t r o n i c shutdown circuit).
Automatic Test Cycle
O n e second t o Y O seconds.
Initial Turn-on P e r i o d
Requires 2 ~ e c o n d s f o r s a f e t y ground t e s t
b e f o r e H.V. is a2plied.
S a f t e y Ground C o n t i n u i t y
R e j e c t l e v e l 0.5 ohm 1 0.1 ohm; o p e r a t e s
whenever ground i s connected. (Low c u r r e n t ,
1.0 a m p applied).
Volt M e t e r
A c c u r a t e t o 1 3 % F.S.
Voltage Monitoring C i r c u i t r y
-t1.0% through full range.
Ammeter
A c c u r a t e t o 1 3 % F.S.
C u r r e n t Monitoring C i r c u i t r y
+ f 0 % through full range.
A m m e t e r Resolution
B e t t e r t h a n 3% F.S.
Current Circuitry Resolution
B e t t e r t h a n 1.0% F.S.
Voltmeter Resolution
B e t t e r t h a n 3% F.S.
Voltage C i r c u i t r y R e s o l u t i o n
B e t t e r t h a n 0.1% F.S.
Input Power
1101240 VAC, f 0 / 6 0 Hz, 5001V m a x
(3OW typical); 115/23OV w i t c h .
Environmental O p e r a t i n g
Conditions
Physical Color
Mint grey/Olive g r e y
I'i'eight
351bs (15.9 kg) N e t
381bs (17.2 kg) Shipped
Dimensions
1 6 314 X 5 114 X 1 3 114 inches
4 3 X 1 3 X 34 c e n t i m e t e r s
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-
SAFETY FEATURES
Sequences design of operation. ' Loss of s a f e t y ground i e r n i n a t e s Hipot Test cycle.
external HV leads.
recesses START button. ' Visual and audible alarm a t failure.
High voltage lockout requiring manual reset.
' No
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INSTALLATION AND OPERATION
S e c t i o n I1
GENERAL
T h i s s e c t i o n c o n t a i n s t h e r e c o m m e n d e d p r o c e e u r e f o r unpackinp,
inspection, instellation, operation sto;zye and reshipment.
U N P.A
- CKING
AND INSPECTION
---
Any sh;??ing c a r t o n t h a t c;,,?ears darr.a,oed should b e ur1;mcked
~ r i t ht h e c a r r i e r ' s a g e n t p i e s e n t . I n s p e c t t h e i n s t r u m e n t f o r d a m a g e
If
the
( s c r a t c h e s , d e n t s , b r o k e n k n o b s o r m e t e r s , etc.)
i n s t r u m e n t is d a m a g e d or f a i l s t o m e e t s p e c i f i c a t i o n s ( p e r f o r m a n c e
t e s t s , S e c t i o n IV), n o t i f y t h e c a r r i e r a n d ROD-L E l e c t r o n i c s
i m m e d i a t e l y . R e t a i n t h e shipping c a r t o n a n d t h e padding m a t e r i a l
f o r t h e carrier's inspection.
INSTALLATION
T h e ROD-L A C H i p o t T e s t e r s a r e s u i t a b l e f o r e i t h e r b e n c h o r .
r a c k m o u n t i n g . To r a c k m o u n t t h e i n s t r u m e n t , use R a c k Mounting
K i t ROD-L O p t i o n # 1 5 , Part No. M100-50D1. O r d e r R a c k Mounting
Kit from factory.
-
POWER REQUIREMENTS
T h e A C H i p o t T e s t e r r e q u i r e s e p o w e r s o u r c e of 115-23fl volts
A C s i n g l e p h a s e , 5 0 t o G O Hz. I n s u r e t h a t t h e p o w e r s o c k e t to
w h i c h t h e i n s t r u m e n t c o n n e c t s h a s a f u n c t i o n i n g s a f e t y ground.
To
protect
operating
personnel,
the
National
Electrical
n l a k u f a c t u r e r ' s A s s o c i a t i o n (NEMA) r e c o m m e n d s t h a t t h e i n s t r u m e n t
p a n e l a n d c a b i n e t b e g r o u n d e d . This i n s t r u m e n t is equipped with
a t h r e e - c o n d u c t o r p o w e r c a b l e which, when plugged i n t o a n
a p p r o p r i a t e r e c e p t a c l e , g r o u n d s t h e i n s t r u m e n t . T h e o f f s e t pin
on t h e t h r e e - p r o n g c o n n e c t o r i s t h e g r o u n d pin.
WARNING
T h i s i n s t r u m e n t t o b e used ONLY in
t h r e e w i r e g r o u n d e d o u t l e t s . I t is
recommended t h a t periodic checks
of t h e o u t l e t a n d t h e ground cable
be m a d e t o i n s u r e o p e r a t o r s a f e t y .
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\
FILLER
STRIP
BOTTOM
COVER
Installation
2-1 0
INITLAL INSTALLATION AND TURN-ON
2-1 1
This i n s t r u m e n t i s shipped ready f o r 115 VAC operation unless
specifically r e q u e s t e d by customer t o b e s e t a t 230 VAC. Spare
f u s e s a r e provided f o r 230 VAC. operation. Prior t o applying power
t o t h e instrument, perform t h e follol-ing:
CAUTION
Disconnect t h e AC llipot T e s t e r from power source
and install t h e proper r a t e d fuses, otherwise damage
t o t h e i n s t r u m e n t may result.
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-
a.
Set t h e T O T A L C U R R E N T control t o full clockwise position.
b.
Set t h e R E A L o r RESISTIVE C U R R E N T control t o full
clockwise position. (AIIOOBV o r N5OOB\' only)
c.
Set t h e r e a r panel A C LINE 115/230\' voltage s w i t c h t o i n d i c a t e t h e number
t h a t corre5ponds t o t h e l i n e v o l t a g e being used. The n u m b e r visible on t h e
slide s w i t c h i n d i c a t e s t h e line v o l t a g e f o r h h i c h t h e primary c i r r u i t is
connected.
d.
With a n A C v o l t m e t e r , c h e c k t h e primary power line for nominal line voltage
condition.
e.
Check t o b e s u r e t h a t t h e p r o p e r fuses a r e installed in a c c o r d a n c e with
markings o n r e a r panel.
f.
C o n n e c t t h e 6-foot power c o r d b e t w e e n i n s t r u m e n t and power source.
g.
If t h i s i s t h e initial turn-on of t h e instrument, perform Operational Check
p r o c e d u r e p e r p a r a g r a p h 2-28.
2-12
STORAGE
2-13
It is strongly r e c o m m e n d e d t h a t t h e equipment b e p a c k e d as if f o r reshipment.
Environmental conditions during s t o r a g e and reshipment should b e a s follows:
a.
Maximum t e m p e r a t u r e 167'F(75OC)
b.
Minimum t e m p e r a t u r e - 4 0 ° F (-40°C)
2-14
REPACKING F O R SHIPMENT
2-15
If possible, use t h e original shipping c o n t a i n e r and packing materials, or:
a.
Wrap t h e i n s t r u m e n t in h e a v y p a p e r o r plastic b e f o r e placing i t in t h e shipping
container.
f
b.
Use p l e n t y of packing m a t e r i a l zround t h e i n s t r u m e n t end p r o t e c t t h e f r o n t
panel w i t h cardboard. P r o t e c t t h e i n s t r u m e n t with 2 inch rubberized/foam
padding p l a c e d along a l l s u r f a c e s of instruments, o r with a l a y e r of excelsior
about 6-inches t h i c k p a c k e d f i r m l y a g a i n s t a l l s u r f a c e s of t h e instruments.
c.
Use a s t r o n g , well s e a l e d shipping c o n t a i n e r (350 lb/sq in. bursting test).
d.
Mark t h e c o n t a i n e r FRAGILE-DELICATE INSTRUMENT.
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-
2-16
A t t a c h a t a g t o t h e i n s t r u m e n t , giving t h e follo:.:ing i n f o r m a t i o n :
e. T y p e of s e r v i c e r e q u i r e d
b. I n s t r u m e n t m o d e l n u m b e r .
c.
Full s e r i e l nurriber.
d. R e t u x a d d r e s s .
by n o Z e l n u m b e r
2-17
In a n y c o r r e s p o n d e n c e , r e f e r t o t h e ins:rument
a n d full s e r i a l n u m b e r .
2-18
OPERATING
-CONTROLS
..
.
. .. .
.. , , ..
~ i ~ 2-2
~ F i lel u s t r a t e s t h e f r o n t p a n e l arid r e a r panel c o n t r o l s f o r
t h e A C H i p o t T e s t e r s . T a b l e 2-1 d e s c r i b e s t h e f u n c ~ i o n sof all t h e
controls a n d indicators.
2-19
I4
I 3 12
I
11
10
I
I
0
B
I
I
I
. .
9
1
2
BY
Model
4
3
5
.
6
;.
only
F i p r e 2-2
Controls and Indicators
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Fig. 2-2
INDEX NO.
4
FUNCTIONS
CONTROLS
LINE POWER ( ~ 1 )
This switch applies or removes power
from the instrument.
A C ON lamp (11)
When lit, it indicates poc-er is applied
t o t h e instrument even if fuses are
blown or out.
ST.4RT Pushbutton (S2)
\Then depressed, the t c s t sequence
begins if t h e instrument is grounded
properly and not ali.eildy indicating
grounded test failure.
RESET Pushbutton (S3)
Resets a
depressed;
early.
TIMING Select Switch
A o r B (S4)
Selects preset test t i m e s and ramp
r a t e s assigned t o position A and B.
Standard factory setting a r e a t full
scale voltage:
failure indication when
also terminates a test
DWELL- -
RAMP
--
Position A: 20OV/sec*
Position B: 200V/sec*
*
For 5KVAC F.S.
is 500V/sec.
60 sec
1 sec
Models t h e ramp
R e a l P a r t Pushbutton
(S5-BV) (Model BV only)
Expands t h e current meter scale
by ten t o indicate t h e real part of
t h e A C current flow when depressed
during a test.
CHASSIS GROUND SENSE
post (BPI)
Connect t h e chassis of t h e device
under t e s t t o this terminal.
The
lead used should be of low resistance
and preferably a s short a s possible
(36" cable supplied).
High Voltage Connector
(J1)
An instrument t o be t e s t e d for leakage
is t o b e plugged into this outlet. Only
t h r e e pronged A C line plugs for
three-wire cords a r e t o be inserted
(unless adaptor is required).
OUTPUT VOLTAGE meter
(MI)
Provides a direct reading of the AC
test voltzge applied t o t h e instrument
under test.
.
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-
-
Fig. 2-2
INDEX NO.
CONTROL
FUNCTION.-
M I L L I A~ T ~ ~ E T E R
m2)
Indicates a m o u n t of AC l e a k a g e
(in mA) flow during a test.
11
FAIL Indicator l a m p
(14)
Displays a visual warning t h a t DUT failed
test.
12
TESTING Indicator l a m p
(13)
Indicates a t e s t i n process.
R E A D Y Indicator l a m p
(12)
Indicates proper ground is established bet iveen
t h e t e s t e d i n s t r u m e n t and t h e HIPOT 'TESTER.
Instrument will n o t o p e r a t e if READY l a m p
is not
on.
,\is0
indicates a c c e p t a b l e
i m p e d a n c e during Ohm Sense test.
Audible Warning
(AL-1)
E m i t s a warning sound when a t e s t resrrlts
in failure.
AC LINE Voltage Switch
(S7)
Slide s w i t c h to s e l e c t either 1 1 5 VAC o r
230 VAC. T h e exposed number indicates
t h e l i n e v o l t a g e selected.
16
A C LINE p o w e r
(J2)
Connects t o
instruments.
17
Hi h Voltage Line F u s e
14
-
-
-
(~5)
power
cable
current
supplied
with
. -
Provides o v e r c u r r e n t protection for t h e
~ r i r n a r y circuit
of
the
high
voltage
transformer. A t 115 VAC i s 2A f a s t blow
a n d a t 230 VAC use 1 A f a s t blow f u s e (unless
otherwise noted).
Power Line Supply
Fuse (F1)
Provides overload protection f o r low voltage
t r a n s f o r m e r p r i m a r y circuitry.
Use 1A
f o r 115 VAC a n d f A f o r 230 \'AC operation.
REAL C U R R E N T
FAILURE SETPOINT
p o t e n t i o m e t e r (R3)
Establishes a maximum level f o r resistive
c u r r e n t blow which cannot b e exceeded
during a t e s t . If t h i s velue i s exceeded,
a failure indication i s given.
-
TOTAL C U R R E N T
FAILURE SETPOIN' T
p o t e n t i o m e t e r (R2)
Allows t h e user t o specify a maximum value
A C c u r r e n t flow during a test. If t h i s value
i s exceeded, a failure indication i s given.
\'ARIAC C O N T R O L
(7'3)
Allows Xlanual C o n t r o l for t h e high voltage
output.
Indentification Label
C o n t a i n s i n s t r u m e n t model a n d serial number
information.
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-
-
2-23
SAFETY F E A T U R E S
2-24
The s a f e t y f e f i t u r e s built t h e ROD-L AC liipot T e s t e r s a r e 2s follow:
a.
T h e s e c u r i t y CHASSIS GROUND SEXSE wire must be c o n n e c t e d
f r o m t h e AC Iiipot T e s t e r t o t h e chassis o r expose m e t a l t o s e c u r e
low r e s i s t a n c e point on t h e unit under t e s t . This will allow t h e
R E A D Y Iight t o t u r n on find t h e AC Hipot T e s t e r t o o p e r a t e . Tnis
w i r e p a r a l l e l s t h e n o r m a l groimd wire in t h e power cord. T o insure
t h a t b o t h wires a r e s e c u r e , 1 a m p r m s a t 1.5 volt AC is passed
t h ~ o u g hboth wires a t all l i m e s . If t h e t o t a l path r e s i s t a n c e proi'es
g r e a t e r t h a n .5 ohm, t h e READY l a m p will not light. (.I0 ohm
optional).
b.
When t h e FAIL l a m p i s a c t i v a t e d a f t e r a breakdown t h e AC high
v o l t a g e i s i m m e d i a t e l y r e m o v e d from t h e A C Hipot T e s t e r HV
o u t p u t c o n n e c t o r s withing 2 rnsec. T h e FAIL l a m p c a n a c t i v a t e d
if a n y of t h e following conditions occur: R e a l o r T o t a l A C c u r r e n t
e x c e e d s t h e p r e s e t value; t h e s e c u r i t y CHASSIS GROUND SENSE
c o n n e c t i o n b e c o m e s f a u l t y while t h e high voltage i s applied; a n
a r c i n g occurs. If a f a i l u r e is indicated, t h e d e v i c e did not pass
a n d should b e i n v e s t i g a t e d f o r reason, r e p a i r e d and r e t e s t e d .
c.
T o p r e v e n t surges, t h e A C t e s t v o l t a g e i s turned on slowly using
e l e c t r o n i c circuitry.
d.
T h e S T A R T p u s h b u t t o n i s r e c e s s e d to p r e v e n t a c c i d e n t a l triggering.
e.
T h e R E S E T pushbutton c a n b e used to p r e m a t u r e l y s t o p t h e t e s t
if d e s i r e d a n d m u s t used w h e n e v e r t h e d e v i c e under t e s t has failed
(unless a u t o reset option is used).
--
2-26
USER RESPONSIBILITY
2-27
The u s e r 'is responsible f o r d e t e r m i n i n g C t h e applicable t e s t v o l t a g e and
t e s t d u r a t i o n f o r t h e i r p r o d u c t in a c c o r d a n c e w i t h c e r t i f i c a t i o n agency
(UL, CSA, VDE, BSI, JEC, e t c ) requirements. User also d e t e r m i n e s t h e
n o r m a l t o t a l l e a k a g e c u r r e n t (or t h e maximum allowed agency) from a
r e p r e s e n t a t i v e s a m p l e of p r o d u c t s under t e s t conditions. F r o m t h i s t h e
user e s t a b l i s h e s t h e m a x i m u m t o t a l l e a k a g e considered a c c e p t a b l e f o r
t h e d e v i c e . T h i s t h e n is t h e TOTAL C U R R E N T FAILURE SETPOINT
f o r t h e device. In a s i m i l a r m a n n e r , t h e R E A L C U R R E N T F.4ILURE
SETPOINT i s e s t a b I i s h e d f o r t h e R O D L Model BV.
m
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-
2-28
OPERATIONAL
FOR S T 4N D A R D AC HIPOT TESTERS
-CHECK
--
2-29
This i s a n o p e r a t o r o r i e n t e d p r o c e d u r e which allows o p e r a t i o n a l c h e c k
of t h e ROD-L AC Hipot T e s t e r without t e s t equipment. Operational
procedure is a s folloivs:
a.
S e t LINE POI\-'ER s w i i c h t o OFF.
b.
C o n n e c t 36" groand s e n s e c a b l e t o t h e CH4SSIS GROUND s e n s e
t e r m i n a l . A t t a c h t h e c a b l e clip e n d t o t h e AC hipot t e s t e r on t h e
Ensure grounded p o h e r c o r d of DUT
m e t a l portion of t h e handle
is plugged i n t o f r o n t panel r e c e p t a c l e of Hipot Tester.
.
c.
S e t l i n e PO\VER s w i t c h t o ON a n d A C ~ o w e rk i m ~should plow.
A f t e r a p p r o x i m a t e l y t w o seconds, t h e green R E A D ? l a m p s'hould
light.
d.
If t h e R E A D Y l a m p d o e s n o t light, insure t h e ground s e n s e connection
is secure.
e.
With READY l a m p l i t , push t h e s t a r t b u t t o n ( a m b e r TESTING
l a m p should light) a n d quickly disconnect t h e ground s e n s e cable.
T h e r e d FAIL larnp should light a n d t h e audible a l a r m should b e
heard. A l s o t h e R E A D Y l a m p i s extinguished.
- --
f.
Push t h e RESET b u t t o n t o extinguish t h e FIAL l a m p a n d audible
alarm.
g-
R e c o n n e c t t h e ground s e n s e c a b l e p e r s t e p "b" and t h e r e a d y l a m p
should light.
--
WARNING
High v o l t a g e is p r e s e n t at HV o u t p u t c o n n e c t o r s when TESTING
L a m p i s l i t a n d m a y b e e x t r e m e l y h a r m f u l to o p e r a t o r i f c o n t a c t e d .
h.
Push s t a r t button: A m b e r TESTING l a m p should l i g h t a n d t h e
O U T P U T VOLTAGE m e t e r should i n d i c a t e t h e proper v o l t a g e under
n o r m a l o p e r a t i o n . (Depends on s e t t i n g of Lvariac).
1.
If O U T P U T VOLTAGE m e t e r d o e s n o t i n d i c a t e proper v o l t a g e adjust
t h e VARIAC C O N T R O L in t h e proper position.
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-
2-30
TOTAL C U R R E N T P R OCEDURE
2-31
To s e t t o t a l l e a k a g e c u r r e n t t r i p point f o r rievice under t e s t (DUT). p r o c e e d
a s follows.
S e t t e s t t i m e per applicable agency specification if different from
s t a n d a r d factor!; s e t t i n g ( R e r e r t o T a b l e 2-7, Index +6)
S e t T O T A L C U R R E N T c o n t r o l fully clockwise.
C o n n e c t D U T t o A C Hipot T e s t e r a n d s t a r t t e s t .
C U R R E N T r e a d i n g f o r unit.
R e c o r d TOTAL
While t h e high v o l t a g e i s on, slorvly r o t a t e t h e TOTAL C U R R E N T
p o t c o u n t e r clockwise u n t i l t h e FAIL l a m p a n d audible a l a r m a r e
activated.
N o t e t h e position of t h e T O T A L C U R R E N T pot. This position
is p r o p o r t i o n a l t o t h e t o t a l c u r r e n t r e a d i n g on t h e f r o n t p a n e l m e t e r .
--
C a l c u l a t e t h e position in which you w a n t to l e a v e t h e p o t e n t i o m e t e r
using t h e formula:
S e t t i n g D e s i r e d = S e t t i n g i n step
x
max current acceptable
s t e p c measured c u r r e n t
R e s e t t h e T O T A L C U R R E N T F A I L U R E SETPOINT c o n t r o l t o position
c a l c u l a t e d above. T h i s c o n t r o l c a n b e used t o set a c u r r e n t betvteen
a m e t e r F.S. r e a d i n g a n d a p p r o x i m a t e l y 0.05 x F.S.
-
2-32
REAL C U R R E N T (BV O N L Y P R O C E D U R E )
.
*
This p r o c e d u r e i s i d e n t i c a l t o t h a t a b o v e , e x c e p t t h e REAJ, C U R R E N T
i s a d j u s t e d a n d t h e "PUSH F O R CURRENT-REAL P A R T - 10"
pot ..
pushbutton i s d e p r e s s e d t o r e a d r e a l c u r r e n t .
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. .-
.
2-34
TEST TIJi'IE ADJUSTMENT PROCEDURE
2-35
The Test Time Adjustment potentiometer is set as outlined in Table
2-1, index $6, a t the factory. The user should set this control in
accordance with the regulator^ agency's suggested test time for the
device under iest if different from standard factory setting. To reset the
test time duration, proceed 2s folloivs:
a.
b.
CA ueno::HV E X P O S U R E
-Turn off pobver to the A C h'ipot Tester.
.Remove top cover and locate Test Time Adjustment potentiometer
R37 on A21 board. Set TIMING Sivitch on Front Pnnel "A".
c.
Re-apply power to t h e AC Hipot Tester.
d.
With top cover removed from Hipot Tester, use a stopwatch
t o time the duration the TESTING lamp remains ON.
e.
By adjusting the Test Time Adjustment trimpot and timing the
TESTING lamp duration with a stopwatch, you should be able
t o s e t any duration desired between one second and 90 seconds.
. -.
f.
Set TIMING switch on-front panel t o "B" and set potentiometer
R2 on board A21 per steps (b) thru (el.
CAUTION
Do not touch any of the 'other
potentiometers on the PC Boards,
otherwise t h e calibratio'n of t h e
instrument will be ruined.
2-36
AUTOMATIC TEST PROCEDURE
2-37
The following procedure assumes the ROD-L Hipot Tester has been
calibrated and adjusted for normal operation. Proceed as follows:
a.
Place device under test (DUT) next to Hipot Tester.
b.
Plug the power cord of DUT into high voltage connector of Hipot
Tester.
c:
. .
- .--- between
Connect Ground Sense. .cable
.- ..
DUT and Chassis Ground Sense
READY lamp will light'
t e r k 6 a l : i? ground is less than 0.5 ohm, the
- - - ..
~.
Z 0 ohm optional).
~
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d.
P r e s s t h e START pushbutton. The 'TESTING l a m p should light.
(If ohm sense option is used r e f e r t o t h e correspondent description).
WARNING
High Voltage applied t o t h e device l~rlder
t e s t . Do n o t touch t h e DUT power cord
o r chzssis while t h e TESTING Iarnp i s lit,
o r e x t r e m e shock may result.
.
c h e c k t h a t t h e O U T P U T ' VOLTAGE' m e t e r i n d i c a t e s t h e t e s t
s e l e c t e d voltage. If v o l t a g e is high or low adjust r e a r panel \'ARIAC
CONTROL a p p r o p r i a t e l y t o compensate.
.
. .
e.
f.
..
R e s t a r t t h e test. O b s e r v e t h e t o t a l c u r r e n t indication. (Model
BV h a s a n additional f e a t u r e : press t h e "PUSH F O R REAL
CURRENT PART
10" pushbutton t o observe t h e 'real p a r t '
current). The t e s t will a u t o m a t i c a l l y a b o r t , giving a f a i l u r e
indication if o n e of t h e p r e s e t c u r r e n t f a i l u r e setpoints i s exceeded,
t h e ground sense connection i s i n t e r r u p t e d or a n a r c i n g condition
o c c u r s d u e to d i e l e c t r i c insulation breakdown. T h e o p e r a t o r
should investigate t o - d e t e r m i n e which f a i l u r e o c c u r r e d in t h e
e v e n t a FAIL indication i s given. F o r t h i s reason t h e a m m e t e r
should be continuously monitored during t h e test.
+
g.
F o r a n o r m a l test, t h e TESTING l a m p will extinguish a f t e r a
c o m p l e t i o n of t h e p r e s e t test t i m e duration. If a test results
in a f a i l u r e condition, t h e FAIL l a m p will light a n d t h e audible
a l a r m will sound. T h e o p e r a t o r must t h e n manuaIly press t h e
RESET pushbutton b e f o r e a t e s t c a n b e r e p e a t e d .
NOTE
A t I e a t 5 seconds must elapse b e t w e e n
TURN-ON a n d t h e f i r s t Hipnt Test a n d 3
second m u s t elapse b e t w e e n successive
Hipot tests or random hi pot indications
will occur.
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-.
--TIIEORY O F OPERATION
-
SECTION I n
3-1
THEORY OF "DIELECTRIC
- -- --WITHSA'IXD
-. TESTING
3-2
The dielectric withstand t e s t is t h e t e s t required by many c e r t i f i c a t i o n agencies
(UL, CSA, BSI, VDE, JEC, ect.) a s "PROOFn of a n instrument's ability t o withstand
excess surges on t h e A C pov:er lines without becoming a hazard t o itself o r t h e
user. It is v ~ e l lknown t h a t lightning, d r a s t i c load chhrlges o r power line outwges
can place short duration spikes on t h e A C power line of man)- t i m e s t h e nominal
line v o l t ~ g e ; and d e v i c e s sllould b e designed with this in mind. Thus, testing
1abo;trtories require t h a t e a c h i n s t r u m e n t c e r t i f i e d by t h e m be t e s t e d f o r dielectric
withs!and r e q i ~ i r e n e n t s .
A test a t 1 5 0 0 VAC i s required of m o s t i n s t r u m e n t s having a 1 1 5 / 2 3 0 volt switch
and f o r sale in both U.S. a n d Europe. However, instruments designed for s o m e
different uses may h a v e o t h e r requirements.
The R O D L A C s e r i e s t e s t e r applies a s i n e wave a t 6 0 H z o r 50 Hz of t h e required
voltage between t h e t w o c u r r e n t c a r r y i n g l e a d s of "device under test" (i.e. t h e
"Hot and "Neutral" conductors t i e d t o g e t h e r ) and t h e "Ground" conductor of
t h e "device under test". An additional "Safety Ground" connection must b e made
t o insure grounding integrity. T h e "Device under t e s t " must "withstand" this
application of v o l t a g e without displaying any indication of d e t e r i o r a t i o n archover,
sparking, overheating o r o t h e r t y p e of failure. Visual inspection of m o s t o f these-..
characteristics is precluded in a closed i n s t r u m e n t . An a m m e t e r i s provided on
t h e A C series i n s t r u m e n t s f o r display&g a c t u a l l e a k a g e current.
I t may be thought t h a t if t h e r e i s n o physical connection b e t w e e n t h e A C power
line a n d t h e chassis o f t h e i n s t r u m e n t under test t h e r e c a n be n o c u r r e n t flow.
This i s not, in g e n e r a l , true. T h e r e a r e a l w a y s parasitic c a p a c i t a n c e s and
resistances p r e s e n t which allow s o m e c u r r e n t t o flow. A t 1 5 0 0 VAC, 6 0 Hz,
every 1 7 7 0 pf of s t r a y c a p a c i t a n c e allows 1 mA of c u r r e n t flow. If a power
transformer is c o n t a i n e d in t h e c i r c u i t interwinding l e a k a g e c a p a c i t a n c e s of
from I 0 0 pf to 1 0 0 0 pf a r e common.
Furthermore, many i n s t r u m e n t s r e q u i r e capaci;ors to b e c o n n e c t e d between
t h e AC po\<er Line a n d chassis t o e l i m i n a t e any R F energy being t r a n s m i t t e d
through t h e line cord. The c i r c u i t s c h e m a t i c of t h e "device under test" should
be i n s p e c t e d - a n d l e a k a g e c u r r e n t f o r m y c a p a c i t o r s of this t y p e should be
computed using t h i s formula:
= 1 5 0 0 x 377 x C
( a t 1 5 0 0 VAC)
( a t 60Hz)
and these c u r r e n t s considered "normal" f o r t h a t instrument.
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The above forrr,ula essurnes that the cnpacitors being Iestcd are
"periect", i.e. linear and have "zero" dissipation. The real world is
never so obliging. Cerzmic c ~ ? a c i t o r s (tliese norrnally ~ ~ s efor
d this
purpose) have lo?erances of 20% or worse, have very nonlinear I-V
responses a t high voltages snd have dissi~8tionfactors at high voltages
of 3 0 % or more. Thus, the actual current flow may be 150% or more
of t h e t t ~ e o r e t i c a l flow for that capacilor. Actual currents can only
be con?irn>ed by tesiing of a !arge n u a b e r of instruments and c ~ m p u t i n g
tables of ~ > ; p ~ i eend
d ~,.o:.sl c ~ s evalrles. Then 6ny current above
this "~::orse cnse" value can be considircd a c8use ior rejection.
The B\' t e s t e r mc.;?sures the "Xeal Part" of the AC cuiient es ??ell
e s t h e l o t e l cui.rent. K ~ r ~ l i n e aor e r i t i o n s (sparks, arcovers, elc.)
invariably influence 'he ''Real Part" o i the current much rnore than
they influence ;';ie 1o:al crjr;cnl. Thi!s, ;hese e i i e c t s can be rnore eesily
deiec.1 ed on t h e a\' ;esiers.
Resistive paresitic effects can occur as well. These can be caused
by moisture or dust between conductors, losin or acid flux "bridges"
between P C board traces, leaky insulating nalerials, etc. Considerable
power can be concentraled in lhese leakage paths. Only 1 mA of current
a t 1 5 0 0 volts means that some point must dissipate 1.5 watts of power.
That much power concentrated in t h e very small area of flux "bridge"
can easily cause a fire hazard.
Real current also flow due t o non-ideal filler capacitors. The "Real
Current" flow in a capacitor can be computed by multiplying the
capacitor dissipation factor by the total current flow, and a s has been
stated, this can be appreciable and very nonlinear. The published low
voltage dissipation factors of capacitors gives only a limited projection
of what t o expect a t high voltages and actual results a r e invarjably
high.
3-3
INSTRUhlENT FUNCTIONAL DIAGRAM
Functionany, t h e A C Hipot Tester is divided i n t o three sections: The
HI1 generator, the HV control and t h e General
Control. A remote
control option can be added t o t h e total system. (As shown in Fig 3-fi.
3-4
The I i V Gcr~eraforconsists of an AC H\' tr2ns;ormer (50/60 Hz) specially
designed t o provide the high vollage end current needed in Hipor Testing.
3-5
The HV Control is the most important part of t h e system, it contains:
The unique solid s t a t e HV Amplitude Control and the Ramp Up Control
Circuitry. The HV Amplitude Control operates under t h e principle
of generating s n adjustable emount of blocking voltage t o the input
line voltage coming out from t h e Variac a s shown in Fig 3-2
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..
AC HIPOT TESTER
FEEDBACK
k
HV C O N T R O L
I
-
IiV OUTPUT
1
'i\
FRONT
AND
REAR PANEL
CONTROLS
GENERAL
CONTROL
HV GENERATOR
<
1
f
F R O N T PANEL INDICATORS
\
++
(Option )
REMOTE
CONTROLLER
Fig. 3-1 Functionni Diagram
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I
1
Fiz. 3-2
-
T h e HV o u l p u t i s d i r e c t l y p r o p o r t i o n a l t o Irp. I'ihere Ifp is t h e v o l t a g e 1'1 g i v e n
by t h e 1 - s r i a c m i n u s t h e b l o c k i n g v o l l a g e V g gene:aled a c r o s s t h e HI' a m p l i t ~ l d e
c o n t r o l . lChen t h e b l o c k i n g v o l t a g e \'B e q i ~ a l so r e x c e e d s t h e v o l t a g e a c r o s s VJ,
Vp i s z e r o as i s t h e HV o u t p u t . A s \'B d e c r e a s e s \'p b e g i n s t o b e d l i f e r e n t f r o m
This u n i q u e s y s l e m h a s
z e r o p r o d u c i n g HI7 i n t h e o u t p u t o f t h e HI' t;ansrorrner.
p r o v e d t o b e t h e rnost e f f i c i e n t s o l i d s t a t e v : ~ y t o c o r ~ t r o lt h e HI' a m p l i t u d e n o t
only i n t e r m s o f d i s s i p a t i n g p o w e r b u t in t e r m s o i i n v a r i a n c e of b l o c k i n g v o l t a g e
V g w i t h r e s p e c t t o t h e n a t u r e o i t h e - I c a d c o n n e c l e d a t t h e HIr o u t p u t , which m a k e s
HI1 a m p l i l u d e p r a c t i c a l l y i n d e p e n d e n t o f t h e l o s d a n d sinusoidal t h r o u g h a l l l i n e a r
Ramp-Up l o f u l l v o l r a g e .
"
-
T h e R a r n p U p C o n t r o l c i r c u i t r y i n t e g r a t e s t h e d i i i e l c - n c e b e t x e e n t h e r a m p up
r e f e r e n c e s i g n a l w i t h t h e v o l t a g e f e e d b a c k p r o d u c i n g a c o n t i o l l i n g signal. This
s i g r ~ a lc o n t r o l s Ley p z r a n ~ e t e r si n t h e )I\' A m p l i t u d e C o n t r o l c a u s i n g t h e HI' o u l p u t
l o follow t h e R e r n p u p s i g n a l a s sho::.n in Fig. 3-3.
FEEDBACK
-
HI' kmp1i;ude C o n i r o l
RU4P UP
0
m
?
-
--
4
BLOCK1 NG
P
HV I 1 : P L I T U O E
REFERENCE
CONTROL
F i g u r e 2-3
-
+VOLTAGE
X z n p Up C o n t r o l
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-
3-6
T h e G c r ~ e r a lC o n t r o l per:oinls t h e c o o r d i n a t i o n o r t h e d i f f e r e n t a c t i ~ ~ i l i e s
a n d m o n i t o r i n g . A s sho:vn in Fig. 3-1
: hV
t
=>nF?U
-
t
TEST
r
REX
CH22SlS GI23
szlrj~
I TRIP
I
R E R
-
>.-
rev1
12IP
[ a
-
KtxTY
FAIL
-
t
t- ~ t-]
-
-
~~
v.
I
m
-~
F ~ E .3-4 G e n e r a l C o n t r o l
.-
The G e n e r a l C o n t r o l c a n b e c o m m a n d e d fiorn t h e d i f f e r e n t f r o n t a n d r e a r p a n e l
controls s h o w n on t h e l e f t s i d e of t h e diagram. I t t a k e s c a r e o f c o o r d i n a t i n g t h e
d i f f e r e n t a c t i v i t i e s o f t h e HV C o n t r o l a n d s e n s i n g t h e s t a t u s o f t h e operation. It
provides c o n t i n u o u s m o n i t o r i n g t h r o u z h t h e f r o n t p a n e l lights, b u z z e r a n d m e t e r
shown on t h e right. s i d e o f t h e d i a g r a m .
-
-
.
T h e r e m o t e o p t i o n is a n i s o l a t e d i n t e r f a c e f o r m o s t o f t h e c o n t r o l
a n d m o n i t o r signals.
--
3-7
.
I N S T R U M E N T ASSEhlBLY DIAGRAM
T h e i n s t r u n l e n t i s d i v i d e d i n t w o m a j o r s u b e s s e m b l i e s as shown in Fig
3-5
F i g . 3-5 A s s e m b l y D i a g r a m
!.
.
T h e ri,oht s i d e s u b e s s e m b l y is p h y s i c a l l y s e p a r a t e d a n d c o n t a i n s t h e A6-S5 board
a n d the e l e c t r i c a l t r a n s f o r m e r s n e e d e d f o r t h e o p e r a t i o n . T h e l e f t s i d e subassemblies
contains t h e A10, A 2 1 e n d o p t i o n s A2-1 f o r B V m o d e l s a n d A 8 R E M O T E (all low
voltage c i r c u i t r y ) . ..
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C --.
i
A more d e t a i l e d d i a g r a m of t h e board's f u n c t i o n s is shown in Flg. 3-6
Fig. 3-6
Detail Assembly Disgram
7 - fi
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POIVER SUPPLY C I R C U I T (A1
--0)
Power g e n e r a t e d in t h e 4 7 0 zssernbly board, H V COh'TROL
and -15 \:DC r e g u l a t e d f o r t h e analog curcuits.
The digital e l e c t r o n i c s r c q i ~ i r e s$5 VDC regulated.
0 0 4 7 5 - 0 6 ) of t h e wiring d i a g r a m .
HIGH VOLTAGE
-COX'iROl,/SI,OIT
-- .
consists of +15 VDC
4 s s e e n in t h e schematic (D~i'g.
'I'URN ON (AG-S5)
p
p
p
This board c o n t a i n s t h e m o s t i m p o r t a n t p a r t s of t h e systems: The HV CONTROL
and RAMP U P CONTROL. .Supporting t h e m a r e t h e RAMP UP GENERATOR aha
t h e VOLTAGE FEEDBACK. T h e output C U R R E N T a n d VOLTAGE monitoring circuit
and t h e PROTECTION a n d A R C DETECTION a r e a l s o included (See Dwg. 00239-01).
HV CONTROL (A6S5)
T h e amount of b l o c k i n g v o l t a g e depends on t h e r e s i s t a n c e of t h e p h o t o r e s i s t a n c e
PC-1. Q1 and Q 2 are used t o d r i v e t h e p r i m a r y of t h e HV t r a n s f o r m e r . When t h e
r e a l y K1 closes, t h e gate $3 i s enabled allowing t h e input l i n e v o l t a g e t o g o through
and t o set t h e c i r c u i t r y in a n initial condition prior t o t h e driving of t h e HV.
transformer.
T h e voltage at t h e p r i m a r y of HV t r a n s f o r m e r i s f e d b a c k through t h e o p t i c a l isolators
U3 and R4 producing a f u l l w a v e r e c t i f i e d c u r r e n t proportional t o t h a t voltage. The
HV output is f e d b a c k t h r o u g h precision r e s i s t o r s R 3 a n d R6 t o produce a n a v e r a g e
c u r r e n t through t h e v o l t m e t e r proportional t o t h e RhlS value. T h e r e s i s t o r R12
is also in series t o p r o v i d e a IT\' monitoring.
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RAMP U P G E N E R A T O R
When t h e 'TEST signal a t TP2 g e t s low, t h e \;olthge a t the input of C R I
becomes neg6til.e a n d no c u r r e n t flows tt,rough i t , s o only t h e c u x r n t fo?ving
t:~rough R 2 9 a n d d e t e r m i n e d by one of t h e pots R 3 0 , R4 goes through t h e
capacitor C 2 c h a r g i n g it. Since t h e charging c u r r e n t is cons!ant t h e output
of U1 (6) is a l i n e a r E A M P UP.
RAMP U P
-~
CONTROL
U 2 cor;:+r.es t h e c u r r e n t pmdrlced tiii.o:!gh R 1 0 and K l 1 with t h e full : ~ a w
recitified c u r r e n t U 3 a n d U 4 a n d i n t e g r a t e s t h e aiiference. An a m o u n t
of voltage a p p e a r s a t t h e p r i m a r y o f t h e HV t r a n s f o r m e r such t h a t ' a c e r t a i n
value of v o l t a g e d i f f e r e n t from t h e initial + 5 V is produced a t pin 6 of U 2
permitting a n i n c r e a s e in t h e a m o u n t of c u r r e n t sunk by LEDI. This value
of current d e t e r m i n e s t h e r e s i s t a n c e of PC-1 t o produce t h e a m o u n t of HV
a t equilibrium.
A R C DETECTION
-
U 5 senses f o r c u r r e n t s s e v e r a l t i m e s higher t h a n t h e full s c a l e value. This
condition c o m e s u p during t h e a r c i n g a n d i t is t r a n s m i t t e d t o t h e A 2 1 board.
3-12
REAL C U R R E N T D E T E C T CIRCUIT (A2-1)
3-13
The A2-1 b o a r d (Dwg. 00442-01) r e c e i v e s a t pin 5 t h e voltage g e n e r a t e d
across t h e v o l t a g e s e n s e r e s i s t o r on t h e A6-S5 board. T h e f i r s t half of U 1
o p e r a t e s a s a buffer. T h e f i r s t half of U 2 m a k e s t h e derivative of t h e v o l t a g e
signal which is proportional t o t h e HV o u t p u t and t h e second half of U 2
converts t h i s signal t o a s q u a r e w a v e signal which rises and falls a t t h e peaks
of t h e v o l t a g e signal. U 8 produces a s m a l l pulse of approximately 1 0 w width
coincident w i t h t h e n e g a t i v e peak of t h e v o l t a g e signal. U4 i s a s a m p l e r
and holder of t h e c u r r e n t waveform which provides t h e necessary f i l t e r i n g
along C13.
--
2'
T h e second half of U 1 is a l e a d i n g c i r c u i t which is adjusted t o provide t h e
e x a c t triggering a t t h e n e g a t i v e ~ e a kof t h e v o l t a g e signal t o c o m p e n s a t e
f o r t h e c i r c u i t delays.
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. .-
The output 1 0 of U 3 i s t h e amplified value given by U 4 , calibrated by R 7
for giving RATS c u r r e n t values t o t h e a m m e t e r through R18. The second half
of U3 is c o m p a r i n g t h e a c t u a l c u r r e n t with t h e real current trip-point t o
identify o v r r c u r r e n t fhilures. Severe nor,-linearities in a DUT c a n produce
R false reading on t h e Iiipot a m m e t e r .
F o r avoiding this, U 7 t i m e s t h e
generation of t h e I 0 1
s pulse only f o r transitions of t h e waveform a t U 2 (12)
occuring n e a r t h e p e a k of i h e v o l t a g e waveform. U 6 provides buffering f o r
external tripping programming. U5 is a n analog swiich f o r selecting r e m o t e
tripping output m e t e r operation.
-
3-14
A21 CONTROL BOARD
3-15
TOTAL C U R R E N-T DETECTOR/COhlPARATORS
The A21 Board (DWG 462-01) r e c e i v e s t h e voltage a c r o s s t h e c u r r e n t sense
resistor, r e c t i f i e s a n d f i l t e r s i t a n d sends i t t o a c o m p a r a t o r t h a t triggers
when preset l i m i t s of t o t a l c u r r e n t a r e exceeded. The A21 board h a s a ground
loop circuit to d e t e c t s a f e t y ground violation.
Active Rectifier-Filter:
U 5 (board A21) functions as a precision full wave
rectifier of t h e A C v o l t a g e p r e s e n t on c u r r e n t sense resistor during test.
U5 overcomes d i o d e non-Iinearjties by placing t h e rectifying e l e m e n t s C R 2
and C R 3 in t h e f e e d b a c k path; Summing t h i s signal with 4 t h e input signal
provides a f u l l w a v e r e c t i f i e d output; C 6 o n A21 board filters t h e signal
with U4. T h e o u t p u t is passed through t h e "Total C u r r e n t Metal Cal" p o t
R19 t o t h e a m m e t e r .
-
Current Comparators: U1 is used as high gain amplifier with weak negative
feedback a n d acts as a c o m p a r a t o r . R 2 2 a n d R21 provide common mode
protection. C7 provides extra filtering.
3-16
SAFETY GROUND D E T E C T CIRCUIT
On t h e A21 b o a r d t h e c i r c u i t composed of R24, R25, CR4, C R 5 a n d U8 half
wave rectifies t h e Coltage b e t w e e n ground an!
t h e "chassis ground sense"
his v o l t a g e i s 1;5 VAC if t h e "chassis ground sense" post is
binding post.
OPEN. When t h e "Device Under T e s t " c o m p l e t e s t h e circuit through i t s ground
wire t o ground, t h e v o l t a g e a t t h e post i s proportional t o t h e r e s i s t a n c e of
t h e ground w i r e in t h e d e v i c e under test. R26, R27 a n d C20 on A21 board
determine t h e t r i p p o i n t f o r t h e darlington pair, 6 3 , Q4 o n t h e ' ~ 2 1 . T h e
resistors a r e s e l e c t e d s u c h t h a t a 0.5 ohm loop r e s i s t a n c e l e a v e s t h e transistors
OFF. Q3 then o p e r a t e s t h e READY l a m p a n d c o n t r o l s t h e START button.
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- -,.
-
3-1 7
LOGIC CONTROL
3-18
This assembly I-eceives all push button inputs and sense outputs from t h e fail
comparators a n d t h e ground s w s e logic. \,;hen t h e proper conditions a r e satisfied,
a t e s t sequence i s permitted. The duration is s e t by a timing circuit. In t h e event
of a n operator r e s e t o r fail condition, t h e t e s t is aborted. If t h e r e is a failure, a
>...dr~ting
,
i s p r e s e n t e d until manually r e s e t by t h e user. This essembly includes a
z e r o crossing d e t e c t o r , a t i m e r and a set-reset l a t c h with associated logic.
3-19
INPUT/OUTPUT LINES:
RESET.
T h e r e a r e t h r e e digital inputs:
OVERLOAD, START, and
An OVERLOAD signal is produced whenever a n arcing condition is d e t e c t e d in t h e
A 6 4 5 board, (or a failure i s produced by t h e A2-1 R e a l C u r r e n t Board). This signal
combines with t h e o v e r c u r r e n t signal g e n e r a t e d by U1 a n d t h e ground failure signal
g e n e r a t e d by pin 3 of U4 t o set t h e f a i l l a t c h a t pin 5 of U7. The ground fail is
g e n e r a t e d only when a faulty ground is d e t e c t e d during a Test. This g a t i n g is produced
by pin 2 of U7.
The START s i g n a l is produced by t h e START s w i t c h which i s tied externally t o t h e
ground t e s t signal. If t h i s is low, a s t a r t signal i s produced at pin 1 3 of U3. U3 pin
8 gives s t a r t pulses synchronized w i t h t h e A C line's z e r o crossings if no failure has
been l a t c h e d a n d w e a r e not in a test. T h e t i m e r U2 controls t h e t o t a l test t i m e
with R2, R3, R37 a n d C2. I t c a n b e reset by t h e f a i l latch.
The RESET s i g n a l resets t h e t i m e r U 2 a n d t h e f a i l latch. T h e r e a r e 3 outputs: GND
TEST, TESTING, a n d ALARM.
The GND T E S T s i g n a l goes low whenever t h e CHASSlS GROUND SENSE loop does
not e x c e e d t h e r e s i s t a n c e tripping value:
The ALARM s i g n a l g o e s low whenever t h e fail l a t c j is set.
The TESTING s i g n a l i s delivered in parallel by Q8 s n d Q 1 and a r e low whenever
we a r e in a t e s t . All t h e above signal drive also t h e correspondent lamps.
-
3-20
T i m e r and Enable Circuits: To t r i g g e r a t i m i n g period a t U2 on t h e A21 a s t a r t pulse
must occure a n d n o f a i l u r e c a n b e p r e s e n t ; The A C hipot t e s t e r also requires a
z e r o crossing o n t h e 60Hz A C line; U 3 d e t e c t s this a n d passes i t t o U2, R37, R2,
R 3 a n d C 2 o n A21 d e t e r m i n e s test time. P a r t s of U6 drive t h e r e s e t input of t h e
t i m e r if a t e s t a b o r t i s required.
3-21
FAIL LATCH: U7 on A2 a r e cross coupled t o form t h e FA% latch. The l a t c h shows
a ground f a i l condition only during a t e s t c y c l e a t t e m p t g a t e d by U7 pin 2. Also
shows a f a i l u r e whenever a n a r c i n g o r overcurrent conditions a r e produced. Pins
9 and 10 of U7 s e n s e f o r t h e above conditions.
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MAINTENANCE AND S E R \ l C E
S e c t i o n IV
INTRODUCTION
This s e c t i o n provides r n s i n t e n e n c e a n d sei-vice fc)r t h e A C stfries Hipot
Testers. Included a r e : t a b l e s of r e c o m m e n d e d t e s t e q u i p m e n t , celibration
p r o c e d u r e s , t r o u b l e s h o o t i r ~ gp r o c e d u r e s , plus r e p a i r a n d adjuslrnent data.
CALIBRA'TJON
Kine m a j o r c a l i b r a t i o n p o i n t s tire r q u i r e d f o r t h e A C ~ e r i e sHi?ot Te5tt.r~.
They are:
1.
2.
3.
4.
M e t e r nlechanical Zero.
" T o t a l A m m e t e r " Cal.
Test T i m e Cal.
"Real Current" A m m e t e r CaL*
5.
6.
7.
8.
V o l t m e t e r Cal.
Feil P o t s Cal.
S a f e t y Ground O h m s Cal.
R a m p R a t e Calibration.
Table No. 1
USE
TYPE
AC/DC D i g i t a l A m m e t e r
Voltmeter ( f l o a t i n g i n p u t )
. .
D a t a T e c h Model 31 or
equivalent.
General
Purpose
and
C a l i b r a t i o n of v o l t m e t e r
and ammeter.
General Radio
W8MT3VM o r e q u i v a l e n t
A C L i n e v o l t ~ g eset-up.
220/240 t e s t s
120-240 V A C L i n e S t e p
Up Trensforrner-
$
H P 1 7 5 o r equivelent
G e n e r a l Purpose
High Voltage P r o b e
Simpson +0161 cal t e s t
Voltage
Measurements
( a l t e r n a t e = Ross Engr.
~vMP-I~-c.~)
Standard R e s i s t o r B o x
0.6.ohm a n d 0.4 o h m 1 %
General Redio
510-A o r equivalent
Safety
Check
High Voltage L o a d s
S e e T a b l e No. 2
C a l i b r a t i o n of ammeters.
*
Gnd
BY Model only.
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Ohms
4-5
SET U P
4-6
The e q u i p m e n t should b e s e t up t o ensure testing a t 115 VAC plus o r minus
1% (low l i n e s w i t c h = "h'orrnal") unless otherwise noted. Foreign users
may w a n t t o r e c a l i b r a t e on their s t a n d a r d voltages and frequencies. If
line f r e q u e n c y i s different from 60Hz, r e m e m b e r t h a t requii.ed capacitor
values will change.
/
4-7
METER hlECHANICAL ZERO
4-8
Kith t h e Hipot t e s t e r turned OFF, n o t e i h e pcsitions of t h e vol!6ge and
a m m e t e r p o i n t e r s on t h e front panel. They should r e e d ze;o glus or minus
one minor division. If they d o not, adjust t h e z e r o screw.
4-9
TOTAL C U R R E N T AMMETER CALIBRATION
--
4-1 0
Turn t h e Hipot T e s t e r on and n o t e t h a t t h e t o t a l c u r r e n t a m m e t e r position
is a t zero (plus o r minus o n e minor division). C o n n e c t "Safety Ground
Sense" w i r e to t h e chassis in all models s o t h a t t h e "READY" l a m p lights.
The m e t e r should s t i l l b e zero. If not, troubleshoot t h e "Full K a v e Total
C u r r e n t D e t e c t " circuit. Insure t h a t no load i s placed in t h e High Voltage
Output Socket.
. .
Push t h e "START" button:
I'
WARNING
HIGH VOLTAGE NOW A P P E A R S ON OUTPUT SOCKET
Note t h e m e t e r reading. It should b e z e r o (plus o r minus one division).
Push t h e R E S E T button. Insert t h e Digital A m m e t e r in s e r i e s with a 0.95%
of full s c a l e HV l o a d resistor (AV Onlyj o r HV l o a d c a p a c i t o r (AV and
BV) p e r t h e s c h e m a t i c shown on t h e next page. Select t h e value of this
load f r o m T a b l e No. 2.
-
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R E Q U I R E D LOAD
~
- -.
~
16OK o h m 3 % , 3kV, 20 i v a t t r e s i s t o r o r 0.01 6pF,
2kVAC capacitor
hll DOA\'-I 5-1
.~
5
2Sk o h m 3%, 3k\', 1 0 0 v:att r e s i s t o r o r O.OSpF,
2kVAC c ~ a c i t o r
h'il 0SAVTl 5opt 001
(e2s
-~
0.01 6 u F , 2kVAC. c a p a c i t o . r , a n d 1.5 m e g o h m 3%
3 w a t t r e s i s t o r 3kV o p e r a t i n g v o l t a g e , non-inductive
0.080uF, 2kxrAC c a p a c i t o r a n d 300k o h m , 3 % 3kI1,
non inductive 1 0 w a t t resistor
-
-
O t h e r MI OOA
a n d MSOOAV 1
.
C a l c u l a t e R e s i s t o r Value f r o m t h i s f o r m u l a :
-
-H- i p o t V o l t a g e
R=
0.95 x F u l l S c a l e C u r r e n t
3%Voltace Tolerance
C =
0.95 x F u l l S c a l e C u r r e n t ( t o t a l I m e t e r c a l )
x Hipot Voltage
.
Hipot Irolta<e
0.095 x Full s c a l e C u r r e n t ( r e a l m e t e r )
- 2nf
-
All BV A'lqdels
p
-
R =
-
> Operating voltage
-
-
3% v o l t a g e t o l e r a n c e
>
Operating voltage
Back-to-backeners
( o v e r 1 oad p r o t e c t )
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A m m e t e r m u s t be insc-rted on low
voltage side
of
resistor
or
or
the
ninrne:e;'s
capacitor
brezkdown
voltage
to
zround
m a y be exci.eried.
Resktor
or
c a p a c i t o r shnuid b e t c s t e d first
t o insure t h a t it c a n c i t l s l a n d
- r a t e d voltage.
S e t a m m e t e r t o lOOmA full scale. Push START button. A m m e t e r ' s
c u r r e n t r e a d i n g should a g r e e w i t h t h e reading on t h e Total L e a k a g e
C u r r e n t a m m e t e r with 3% plus o r minus of full s c a l e (e-g. f o r 10
mA FS a m m e t e r t h e t w o r e a d i n z s should b e within 0.30 mA of
e a c h other).
.
If t h e y d o n o t , a d j u s t t h e "Total C u r r e n t A m m e t e r Cal" p o t - R19
on t h e A21 b o a r d u n t i l i t a g r e e s with t h e Digital A m m e t e r reading
with 1%. See Dwg. 0 0 4 6 2 - o i f o r p o t positions.
Push "RESET" to e n d test.
-
4-11
TEST TIME CALIBRATION
-
4-1 2
S e t a s p e c i f i c test t i m e p e r i n s t r u c t i o n s of p a r a g r a p h 2-35. T o
c h e c k test t i m e l i m i t s , t u r n "Test The" p o t t o minimum a n d
maximum.
Minimu.n should b e 1 s e c o n d end maximum g r e e t e r
than 90 s e c o n d s . If n o t , troubleshoot t i m e r o r c a l l R O D L
Applications Engineer f o r a s s i s l ~ n c e .
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~-
-
4-1 3
A2-I CALIBRATION
4-14
-
OFFSET ADJUSTMENT
1.
Take t h e A21 Board out.
2.
Short Pins 5 and 1 3 of t h e A2-1 Real Current board t o Gnd.
3.
Turn R1 t o get O\' DC a t TP2.
4.
Short Pins 5 and 1 3 of t h e A2-1 Real Current board t o +5V.
5.
Turn R 3 7 t o g e t 01' DC a t TP2.
6.
.
.
.. .,
.
.
,
Turn R 3 fully counicr~clock::.ise. Remove i 5 V from pin 5 and 13
and
connect
i t back t o Gnd.
.. . .
.
.
7.
Adjust R2 t o r e a d 0 \ ' DC a t TP3.
8.
Adjust R 6 t o r e a d OV DC a t TP12 (ZOmV scale).
9.
Adjust R4 t o r e a d OV DC a t TP4 (20mV scale).
10.
Adjust R5 and notice level change from about OV t o 15V a t TPl1.
Leave R5 e x a c t l y where level change occurs.
.
11.
Turn R7 fully clockwise.
12.
Short TP8 t o g o u o d (U4 Pin 3).
13.
Adjust R29 t o r e a d OV a t TP9.
14.
Adjust R8 t o r e a d OV DC a t TP7 (20rnV scale).
15.
Short (tie) TP5 and TP6 together.
16.
Adjust R9 t o produce a level change from 15V t o about -15V a t
. TP10 (5V scale). Leave R9 e x a ~ t l ywhere t h e level change occurs.
NOTE
-
Be s u r e t o check z e r o everytirne t h e reference scale is changed on
t h e oscilloscope and throughout t h e procedure. After a 20rnV scale is
used a 5mV s c a l e is advised.
4-15
.
TRlGGER AND METER CALJBRATION
1.
Turn R7 t h r e e t i m e s counterclockrvise.
2.
Connect a resistor with a value equal t o High Voltage x10
Full Scale Current
o r 200K + 3 % ohm 5KV when no other is available t o output with
a n e x t e r n a l a m m e t e r in series in t h e low side.
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3.
Push the START button t o g e n e r a t e HI'. Push t h e R E A L button
R3 slowly c l o c k ~ v i s e until t h e a m m e t e r deflects in t h e positive
Continue slorrly t a m i n g R 3 just until t h e ernrneter slows down its
fast ascending trip. Slowly turn up t h e variac if necessary t o g e t
on the a m m e t e r equal t o full s c a l e when the H E A L button is pushed.
and turn
direction.
relatively
a rcadyng
4.
-
Adjust R7 t o m a d t h e ssrne ciirreni on t h e Front Pariel :%leteron the e x i e r ~ a l
k n ~ m e t e r . Tush tihe KESET buiion.
5.
Connect a c a p a c i t o r (typically 0.016pF 5KV) in parallel t o t h e resistor, push
the START button and check t h a t the reading on t h e a m m e t e r is about the
same a s before, if not, adjust R 3 slowly t o g e t a reading about 3% above
t h e reading when t h e resistor was alone.
-
6.
Take t h e resistor out and push t h e START button. Check t h e real current
reading a f t e r t h e r a m p up. This value added t o t h e one when t h e resistor
is alone gives t h e real c u r r e n t value when both capacitor and resistor a r e
in place. If not, r e p e a t s t e p 4 accordingly.
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4-1 7
Disconnect a l l l o ~ d sfrom t h e HlPOT TESTER. C o n n e c t t h e High Voltage
probe ( c o n n e c t e d a s a I 0 0 0 t o one v o l t a g e divider by shunting t h e output
with a 50k ohm r e s i s t o r , t r i m value t o c o m p e n s a t e f o r DVAl input
i m p e d a n c e , s y s t e m crccur~icyt o be 1% o r b e t t e r ) t o t h e DI'hl used, Connect
t h e ground l e a d of t h e p r o v e end t h e SAFETY GROUND wire from t h e
HIPOT TESTER t o t h e HIPOT TEST f r a m e .
Push "STA RTn b u t t o n .
WARNING
!;TC;H VO!,T.IGiiS A P P E A R ON OVii'ilT PANEL BLOCK
-~
T h e v o l t m e t e r should rise slowly from z e r o a f t e r a n initial delay.
r o t e t h e v o l t a g e reading. Insert t h e p r o b e i n t o t h e OUTPUT SOCKET
a n d r e a d t h e v o l t a g e f r o m t h e Digital Voltmeter. T h e t w o should
a g r e e within plus o r minus 3% of full s c a l e (or 90 volts.). If t h e y
d o n o t c h a n g e t h e value of R 6 on t h e A G S 5 b o a r d until they do.
4-1 8
FAIL P O T S CALTBRATION
4-19
Turn a l l F a i l u r e S e t p o i n t P o t s fully clockwise. Insert t h e Calibration
Load l i s t e d in t a b l e No. 2 t o pull nearly Full S c a l e C u r r e n t i n t o t h e HIPOT
TESTER O u t p u t Socket. NOTE: Digital a m m e t e r shown on P a g e '4-3
i s n o t n e e d e d in t h i s test. However, t h e dual b a n a n a jacks should be s h o r t e d
together.
Push "START" button.
WARNTNG
HIGH VOLTAGES A P P E A R ON T H E T E S T LOAD
While t h e high v o l t a g e i s ON, slowly t u r n t h e TOTAL C U R R E N T
F A I L U R E SETPOINT P O T counter-clockwise until t h e FAIL l a m p
c o m e s ON. Push RESET. N o t e t h e position of t h e s l o t on t h e
p o t e n t i o m e t e r . It should b e n e a r t e n (10) on t h e scale. If i t i s l e s s
t h a t e i g h t (a), t r o u b l e s h o o t t h e A21 board o r call ROD-L Applici..tion
E n g i n e e r f o r assistance.
To c h e c k t h e R E A L C U R R E N T FAILURE SETPOINT pot, t h e r e s i s t o r
l o a d u s e d in p a r a g r a p h 4-15 i s required (BV only). T h e Digital A m m e t e r
i s n o t n e c e s s a r y f o r t h i s test. If i t i s d e l e t e d , s h o r t t h e dual banana
plug. R e s e t a l l SETPOINT POTS fully clockwise, S e t up t h e l o a d
a n d plug i n t o HIPOT TESTER.
Push "STARTn b u t t o n .
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-
IIIGH VOLTAGES A P P E A R ON T H E TEST LOAD
While t h e high v o l t a g e is O N , slowly t u r n t h e HEAL C U R R E N T FAJLURE SETPOINT
POT coilnter-clockwise until t h e FATL l a m p c o m e s on. Push RESET. N o t e t h e position
o i t h e slot on t h e p o t e n t i o m e t e r . Jf i t is l e s s t h a n six (6): troubiesimot i h e -421 :):lard
o r call R O D L Application Engineer.
R e p e a t t h e t e s t b u t t u r n t h e TOTAL C U R R E N T FAILURE SETPOINT P O T until
t h e FAIL l a m p c o m e s on. I t should b e n e a r o n e (1) on t h e scale. AV u s e r s may also
want t o d o t h i s by c o n s t r u c t i n g t h e a p p r o p r i a t e load.
-
4-20
4-21
SAFETY G R O U N D OHMS CALIBRATlON
.
Disconnect a l l l o a d s f r o m t h e HIPOT TESTER. C o n n e c t a 0.5 ohm resistor
b e t w e e n t h e CHASSJS G R O U N D SENSE t e r m i n a l on t h e f r o n t panel and
t h e h a n d l e o f t h e HIPOT TESTER. Make s u r e t h a t t h e c o n t a c t r e s i s t a n c e
- ..
of t h e S a f e t y Ground w i r e i s negligible.
Turn o n t h e HIPOT TESTER,
t h e S T A R T button.
T h e R E A D Y l a m p should c o m e ON.
Push
WARNING
HIGH VOLTAGES A P P E A R ON T H E TEST CIRCUIT
The High v o l t a g e should c o m e up normally a n d n o FAIL condition should
occur. Push t h e RESET button.
R e p l a c e t h e 0.5 ohm r e s i s t o r w i t h a 0.5 ohm resistor. I n s e r t t h i s t e s t
c i r c u i t i n t o t h e O U T P U T S O C K E T a n d d o n n e c t t h e GROUND SENSE a s
above. T h e R E A D Y l a m p should N O T c o m e on. Push RESET i f necesqary.
The li-mits on t h e SAFETY G R O U N D TEST c i r c u i t have b e e n verified.
If- t h e l i m i t s a r e n o t c o r r e c t , t r o u b l e s h o o t t h e SAFETY GROUND DETECT
c i r c u i t o r c a l l ROD-L Application Engineer.
Finally, D i s c o n n e c t l o a d t o HIPOT TESTER. C o n n e c t GROUND SENSE
wire to t h e f r a m e of t h e H I P O T TESTER. T h e READY l a m p should c o m e
ON. P u s h t h e S T A R T button.
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WARNING
HIGH VOLTAGES A P P E A R ON T H E TEST C l R C U l T
lfhile t h e high v o l t a g e is o n , disconnect t h e G r o u ~ r dSense
wire.
The FAIL l a m p should i m m e d i a t e l y c o m e ON a n d t h e high v o l t a g e should
drop t o zero. Push RESET. T h e READY l a m p should NOT light until
t h e Ground Sense
wire is a g a i n coniiected t o t h e Hipot T e s t e r .
-
4-22
R.A M P
-
R A T E CALIERA'I'ION
4-23
Proper o p e r a t i o n of t h e R a m p Up C o n t r o l on t h e AG-S5 board sl!ould be
verified. .by w a t c h i n g t h e O U T P U T VOLTAGE METER. . C h e c k t h e delay
t i m e (i.e. t h e ' t i m e b e t w e e n pushing t h e S T A R T b u t t o n and t h e beginning
of t h e rising voltage) and t h e r i s e t i m e (i.e. t h e t i m e b e t w e e n t h e minimum
point a n d t h e 100% point o f t h e rising voltage) o f t h e o u t p u t v o l t a g e
ivaveform. D e l a y t i m e should be b e t w e e n 0.5 a n d 1.5 seconds. R i s e t i m e
should, b e d e p e n d e n t of t h e R a m p R a t e a d j u s t m e n t . N o spurious oscillations
should be s e e n . A t t h e end o f t h e turn-on-period, t h e voltage waveform
should b e sinusoidal e x c e p t f o r very s m a l l a m o u n t s o f crossover distortion
(assuming a low distortion A C p o w e r line).
Under f u l l l o a d conditions ( u s e test l o a d f r o m T a b l e No. 2) t h e o u t p u t
voltage should v a r y l e s s t h a n 8% f o r c a p a c i t i v e loads. If not, troubleshoot
A6-S5 board. T h e w a v e f o r m should s t i l l look e s s e n t i a l l y sinusoidal (with
a c t u a l l y l e s s d i s t o r t i o n t h a n t h e o n e r e c e i v e d a t t h e i n p u t line.
4-24
LNITIAL CALlBRATlON OF A6-S5.
Without Running
1.
2.
a
TEST cycle, a d j u s t t h e following:
Adjust R9 t o r e a d a p p r o x i m a t e l y n e g a t i v e lOOmV at TP7.
C,
3.
4.
.
R 3 0 fully clockwise. S e l e c t mode A on t h e f r o n t p a n e l and a d j u s t
TEST ?ME f o r approx. 30 sec.
A d j u s t - R 3 0 d o c k w i s e until t h e r --.
a t e of r i s e i s a s quick as d e s i i e d
. ~ e p e a tf o r R4 s e l e c t i n g m o d e B on t h e f r o n t panel.
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.,
.
Fig 4-2 s h o w s t h e r e l a t i o n b e t w e e n t h e different p a r a m e t e r s of control.
Fig. 4-2
-
T r s t C y c l e 7z;eme;er
The d e l a y t i m e is given by ep?ro>irna.:ely
D E L A Y = 0.5 + K (P.AI\IP R A T E
Full Scale Voltage Sec)
The R a m p R a t e is a conirollable p a r s m e i e r adjusted b y R 3nand R 4
for M o d e A a n d B respectively. F o r e a c h instrument t h e R a m p R a t e
v a r i e s f r o m a b o u t F U L L SCALE VOLTAGE/Sec t o FULL SCALE
30/sec. F o r example, f o r a 5kV unit t h e R a m p R a t e is
VOLTAGE
a d j u s t a b l e f r o m 5000 V/sec t o 166/Ir sec. K is a n i n s t r u m e n t constant.
and v a r i e s f r o m a b o u t 30 m s e c t o 40 msec. So t h e e x p e c t e d delay.
t i m e i s a b o u t f r o m 0.54 s e c t o 1.54 sec.
+
The R A M P TIME d e p e n d s
VOLTAGE s e l e c t e d .
&
t h e s e l e c t e d RAhlP R A T E a n d t h e FULL
R A h l P TIME = FuU V o l t a ~ . e
RAhlP RATE
If t i e s a m e R A M P TIME i s t o maintained
when t h e FULL VOLTAGE
is c h a n g e d w i t h t h e VARAIC CONTROL, t h e RAMP R A T E has l o be
readjusted.
?
Test t i m e i s t h e t o t a l DELAY plus R A A I P plus D12t'ELL time. The
r e c o v e r y l i m e is a b o u t 0.5 sec. So, f o r a 5kV unit with 5000 V/sec
R a m p R a t e , 5kV full v o l t a g e , 1 s e c dv:ell time, t h e TEST TIlvlE selected
has t o b e 0.54 s e c + 1 sec + 1 s e c = 2.54 sec a n d t h e t o t a l t e s t cycle
t i m e is 2.54 + 0 . 5 s e c ( r e c o v e r y t i m e ) = 3.04 sec.
4-26
For r e a d j u s t i n g a R A h l P RATE, t h e following procedure i s suggested
1.
S e l e c t t h e c o r r e s p o n d e n t mode A o r B.
2.
S e l e c t a l a r g e T E S T TIME accordingly t o R A M P TlhiE Zesired
a d j u s t i n g p o t s A or B in t h e A21 b o a r d and running t h e test.
3.
P u s h t h e R E S E T b u t t o n e n d a d j u s t t h e p o t R 30 o r R 4 f o r RAMP R A T E A o r B. CJockr.~ise decreasesthe RAMP RATE.
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Push S T A R T b u t t o n and c h e c k t h e RAMP TIME. Repeat S t e p # 4 if necessary.
R20 is f a c t o r y a d j u s t e d f o r waveform s i m m e t r y .
4.
5.
Adjust t h e TEST TIME b a c k position.
4-27 Equipment Required:
Table No. 1.
-
T h e r e q u i i e d equipment is t h e s a m e a s t h a t lisied in
4-29 TROUBLESHOOTING T R E E PROBLEM LIST
. .. .
. .
4-30 The foIlowing i s a list of p r o b l e m s and potential causes.
A.
N O A C POWER.
1.
2.
3.
B.
C h e c k f u s e s Fl a n d F 2
C h e c k f o r bad AC P o w e r L a m p (11) ON-OFF Switch 611,
l i n e f i l t e r (1.1-L2).
M e a s u r e f o r l i n e v o l t a g e b e t w e e n A6-S5,. T P 6 and T P 7
-
.-
I n s t r u m e n t blows fuses.
#
1.
2.
C.
Is F l only blowing? C h e c k f o r s h o r t e d AllOVl o r AIOV2. Check f o r
s h o r t e d T1. Troubleshoot A10 board.
D o e s F 2 or F 3 only blow? If so, c h e c k f o r s h o r t e d o u t p u t power
t r a n s i s t o r s . C h e c k f o r i n t e r n a l s h o r t on T2.
High v o l t a g e m e t e r d o e s n o t t u r n on slowly.
1.
C h e c k f o r s h o r t e d o u t p u t transistors.
board.
D. R e a d y lamp d o e s n o t work.
C h e c k f o r l e a k y Q 2 on A6-S5
9
1.
C h e c k f o r burned o u t bulb.
2. - C h e c k f o r bad c o n n e c t i o n a t B P I o r bad 1 ohm 31Y r e s i s t o r on A6-S5.
3. T r o u b l e s h o o t s a f e t y ground o h m s d e t e c t c i r c u i t on A21.
E.
No High V o l t a g e
1.
2.
. 3.
4.
C h e c k f o r b a d f u s e s F 2 a n d F3.
C h e c k f o r bad S T A R T s w i t c h
C h e c k wiring h a r n e s s f o r f r a y e d wiring.
Troubleshoot A6-S5 b o a r d digital logic.
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F.
Failure indicators do not work o r work erratically.
1.
2.
3.
4. -
G.
Excessive power disspation on A6-SS.
1.
2.
3.
H.
Check t o s e e if t h e l r a k a g e current a m m e t e r h'orks.
Check signals gi\:en by U5 on A6-S.5.
Determine which of four possible failure modes is being
d e t e c t e d . That is, safety ground fault, t o t a l curi.ent overload,
o r T2 primary current g r e a t e r than 1 . 2 a m p (overload). Troubleshoot
app:.op:.iatc- iunclional block.
Check initial condition voltage a t t h e base of Q1 (AG-S5).
Check f o r shorts, low b e t a , etc.
Check f o r internal shorts, corona, etc.
Measure volgate between TP6 and TP7 on A6 board with high voltage
OFF. This voltage should equal line voltage. With high voltage ON,
this voltage should be less than 5 VAC-RMS fully loaded a f t e r t h e
R a m p Up. If not, check troubleshoot A6-S5.
. ~-
Arcing shutdown does not work.
1.
2.
3.
4.
Connect oscilloscope t o A-21 pin 7 which is optoisolator output. Short
Hipot T e s t e r output. Adjust trigger f o r a single sweep as optoisolator
switches f r o m +5V t o OV and back.
Push START. The FAIL l a m p should g o on a f t e r a n approximate delay
of 1 sec when t h e HV comes up. The oscilloscope should show a 0.2 to
o n e millisecond negative pulse from t h e optoisolator thus verifying
operation.
If no pulse appears o r pulse does not fall below one volt, repair optoisolator
o r associated circuitry.
If i t appears, check w i t h t h e factory f o r increased sensitivity for
low level energy arcing.
.
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P A R T S LIST
SECTION V
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-
-
ROD-L ELECTRONICS, INC.
ASSEMBLY DESCRIPTION: A10 POWER SUPPLY
ASSEMBLY NUMBER: 00459-02 REV-A
RATING AND/OR
ITEM KEFERENCE
DESCRIPTION
MFR. NUMBER
........................................................................
1 A10
PCB, RAW
00457-02 ROD-L
CASACITOR, EL
470uf 3 5 V
2 C4,CS
CAPACITOR, EL
3 3 O O u f 16V
3 C1
luf J5V
CAFACITOR. EL
4 C2,C3,Cb
CSAOS, COLLRER
5 Ul-U3
DIODE BRIDGE
6 VRI
5V REGULATOR
7905, CLM340T5
7 VH2
-i5V REGULATOR
7915, LM320T-15
+ I 5V REGILILATOR
7815, LM340T15
8 VR3
9 Cill-CR3
DIODE
1N 4 0 0 2
10 F1
FUSE
275004
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QTY.
1
2
1
3
3
1
1
1
3
1
-
ROD-L ELECTRONICS, INC.
-
ASSEMBLY DESCRIPTION: A21.CONTROL LOGIC BOARD
ASSEMBLY NUMBER: 00462-02 REV. G
RATING AND/OR
ITEM REFERENCE
DESCRIPTION
NFR. NUMBER
1 A21
2 TP1-7
3 C1,3,4,7,8,
C9,11,12,13.15
4 C14
5 C2
6 C5
7 C6
8 C10
9 R1.4-9,R30,R44
-: 1 0 R3
.
11 R10,11,33,34,40
12 R43
1 3 R18,20
14 R21
15 R22,23,24,28
R29.35
1 6 R25,R36,R41.
17 R26
1 8 R27.39
19 R38
20 R12-17
21 R2,37
22 R19
23 Q1,2,3,7,8,9
24 (14.5
-
'
-
-
.. . ... . ..
'
.
25 Qb
26..
C R ~.
27
28
29
30
31
32
33
34
35
36
37
....; . .
:
CRZ-5,8,9
U1,4,5,8
U2
U3
U6
U7
X
-
X
CRl,CR7
R42
.
.
RAW PCB
TEST POINT
CAPACITOR CERAMIC
PARTS Ll ST
QTY.
ROD-L 00462-02
1
7
.Oluf 25V
10
CA?FIC I TOR
.47uf
CAPACITOR TgNT/ELYTIC 150UF 16V
CAPACITOR TANT/ELYTIC lOUF 16V
CkF'.?CiTOF( TANT/ELYTIC 4.7UF 35V
C&F'ACITOR TCNT/ELYTIC 22UF 15V
4.7K 1/4W 5%
RESISTOR CARBON
. 6 . SK 1/4W 5%
RESISTOR CkRRON . .
1K 1/4W 5%
RESISTOR CARBON
RESISTOR CGRBON
B.2K 1/4W 5%
RESISTOR CARBON
3.3K 1/4W 5 X
RESISTOR CARBON
lOMEG 1/4W 5%
RESISTOR CARBON
10K 1/4W 5 X
1
1
1
1
1
'
.
. .
..
.
9
'2
5
1
2
1
6
RESISTOR CARBON
RESISTOR CARBON
RESISTOR CARBON
RESISTOR CARBON
RESISTOR METAL FILM
POTENT1OMETER
POTENTIOMETER
TRANSISTOR, NPN
TRANSISTOR. NPN
TRANSISTOR, PNP
6BK 1/4W 5%
1BK 1/4W 5%
lOOK 1/4W 5X
- ~- .
56K 1/4W 5%
20K 1/4W 1X
500K 20 TURN 3006P-1-504
2K 20 TURN 3006P-1-203
2N2222
2N3904
ZN2907
DIODE., :,ZENER.: :,I.' . . 14.7V : IN7500
. .. .. . .:
.:
DIODE, SIGNAL
1N414B
IC, O P AMP
UA741
IC, TIMER.
NE555 SPIN DIP
IC, 4 INPUT NAND
SN7420N
IC, HEX INVERTER
i SN7405 14 PIN DIP
IC, 2 INPUT NAND
DM7400 14 PIN DIP
IC SOCKET
SPIN LOW F'fiOFILE
IC SOCKET
14PIN LOW PROFILE
NOT USED IN DRAWING
NOT USED IN DRAWING
"
'
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3
1
2
1
6
2
1
6
2
1
,
1.
6
4
1
1
1
1
5
3
-
FARTS LIST
ROD-L ELECTRONICS, INCASSEMBLY DESCRIPTION: 06-S5 SLOW RISE CONTROL BOARD
ASSEMBLY NUMBER: 00235-02 REV. B
RATING AND/OR
NFR. NUtlBER
ITEM REFERENCE
DESCRIPTION
...............................................................
00238-02 ROD-L
1 AbS5
EAW PCB
2
TEST FIN
3 C1
CAPACITOR, ALUM
l0UF 12V
4 tiS-1
HEAT SINK DANGER Sl GN MOUNT
5 C2
C W A C I T O R TANT
220UF 6V
6
INSULATOR, RUBBER
7 C3
CA'IAC I TOR
22UF 3 5 V
8
L A P E L , DANGER
9 C8
CSPACI TOR
-0
1 UF 25V
CAF'ACITOR
3JUF 10V
1 0 C6
. CAPACITOR, DISC
.
.OlUF 1KV. .
. '
11 C7.
1 2 CRl-B,CR11-13
DIODE
1N914B
13 CR9,CRlO
DIODE
1N5245B
14 CR14-17
DIODE
1N4005 6OOV 1AMP
15 K1
REED RELAY
GORDOS F81-5053A
16 U1,U2
IC
UA741TC OP AMP
17 U3-US
OPTICAL COUPLER
MCT2E
18 PC-1
PHOTOCELL RESISTOR
19
PHOTOCELL HOUSING ASSMBLY
20 01
TRANSISTOR
2N3439
21 02
TRANSISTOR
2N5416
22 Q3
TRIAC
T2700D
23 R1
RESISTOR
1.62K 1/4W 1%
24 R2
RESISTOR
15K 1/4W 1%
25 R3
RESISTOR
1.2MEG ZW 1%
26 R4,R30
RESISTOR, VARIABLE
1MEG
27 R5
RESISTOR
1.21K 1/4W 1%
28 R6,RlB,R19
RESISTOR
330K 1/2W 5%
29 R7,RB
RESISTOR
4.64K 114W 1%
30 R9
RESISTOR, VARIABLE
20K
31 R10
3.48K 1/8W 1%
RESISTOR .
32 R12
RESISTOR
3.3K 1/2W 5%
33 R13
i
1 OHM 3W 1%
RESISTOR
3 4 R14,RZl
RESISTOR .
68 OHM l/ZW 5%
35 Rlb,R22,R28
RESISTOR
100 OHM 1/2W 5%
36 R15
RESISTOR
3.6K 1/2W 5%
37 R17
RESISTOR
7.5K 1/2W 5%
38 R29
RESISTOR
20K 1/4W 1%
39 R20
RESISTOR, VARIABLE
25K
40 R23
RESISTOR
1K 1/2W 5%
41 R24,R27
RESI STOR
-33OHM 2W 1%
42 R25
RESISTOR
82K 1W 1%
43 R26
RESISTOR
lOOK 1W 1%
44 C4,CS.
NOT USED IN DRAWING
-
-
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QTY.
ROD-L ELECTRONICS, INC.
FARTS LIST
RSSEKBLY DESCRIPTION: 02-1 REAL CURRENT BOARD
ASSEMBLY NUMBER:00442-02 REV. D
RATING AND/OR
DESCRIPTION
MFR. NUMBER
ITEM REFERENCE
....................
1 AZ-1
2 TPI-12
3 C1 ,Z-12,16,17
4 C2
00442-02 ROD-L
R4W PCB
TEKMINRL TEST FIN
KEYSTONE 1405-3
CGPACITOR CERAMIC
-01UF 25V
CGF'ACITOR MONLYTHIC
-47UF 50V
25V
47UF
5 C13,14,15,21,22 CGPbCITOR EL
CGFACITOR TANT/EL
IUF 20V
6 ClE,l9
-002UF 25V
CAPACITOR CERAMIC
7 C20
CAF'ACITOR. MJNOiYTHIC 2.2UF
8 C23
9 CR1-4,7,8
DIODE, S~G'!AL
1 0 CR5,9,10
DIODE, ZENER
1 1 CRh
DIODE, ZENER
1 2 Q1,Z
TRANSISTOR, RCA
1 3 Q3
TRANSISTOR, RCA
14 U1-3
IC, NAT
1 5 U4
IC, NAT
16 U5
IC, HOT QUAD ANLG SW
17 U6
IC, NAT QUAD OP AMP
1 8 U7
IC, SIG TIMER
19 U8
IC, RCA 2 INPUT N4UD
20 R1.2,;-9
POTENTIOMETER BOU
21 R3
POTENTIOMETER BOU
22 R4
POTENTIOMETER BOU
20K 3006-1-203
23 R10,14
lOOK 1/4W 5%
RESISTOR CARBON
24 Rll,l6,17,19,20 RESISTOR CARBON
1K 1/4W 5%
25 R30
RESISTOR CARBON
15K 1/4W 5%
26 R12
RESISTOR CARBON
680K 1/4W 5%
27 R13,18,23,24
RESISTOR CARBON
10K 1/4W 5%
28 R28,32
4.7K 1/4W 5%
RESISTOR CARBON
29 R29
RESISTOR VARIABLE
1K 3006P-1-102
30 H21,15
RESISTOR CARBON
1K 1/4W 5%
31 R22,26
RESISTOR CARBON
47K 1/4W 5%
32 R25
RESISTOR CARBON
100 OHM 1/4W 5%
33 R27
RESISTOR CARBON
.20K 1/4W 5%
34 R31
RESISTOR CARBON
56K 1/4W 5%
35 R33
KESISTOR CARBON
10M 1/4W 5%
36 R34-36
.
RESISTOR, MF
100K 1/4W 1%
37 R37
POTENTIOMETER
2SK 3006-1-253
38 R38
RESISTOR CARBON
87K 1/4W 5%
39 RN1
RESISTOR SIP
4.7K 1% MSPOE-A-03-472G
40 RN2,3
RESISTOR SIP
1K 1% MSPOE-A-03-102G
41 RN4,S
RESISTOR SIP
lOOK 1% MSPOE-A-03-104G
42 RN6
RESISTOR SIP
1OK 1% MSPOE-A-03-103G
43 RN7
RESISTOR SIP
2.2K 1% MSP08-A-03-222G
44
SOCKET, IC
14PIN DIP LOW PROFILE
45
SOCKET, IC
16PIN DIP LOW PROFILE
46
SOCKET, IC
EPIN DIP LOW PROFILE
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QTY.
1
10
13
1
5
2
1
1
OPTfONS
SECTION W
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BV THEORY O F OPERATION
HIGH VOLTAGE CONFlGURATlON
The high v o l t a g e configuration will be essentially t h e one used in t h e standard
AV models as shown in t h e wiring diagram
of t h e high voltage configuration.
R 1 is a set of high v o l t a g e resistors f o r limiting t h e c u r r e n t through t h e a m m e t e r
t o 1mA. R v is a f a c t o r y s e l e c t e d resistor f o r producing a voltage of about 3
volts RMS f o r monitoring t h e high voltage output. RI is t h e current s e n s e resistor
and is also f a c t o r y s e l e c t e d f o r producing about 5 volts RMS max f o r monitoring
t h e leakage c u r r e n t . Assuming a pure resistive load t h e c u r r e n t monitoring
waveform i s 180' o u t of phase with r e s p e c t t o t h e voltage monitoring waveform.
REAL C U R R E N T DETECT BOARD
The f o r m e r revision l e v e l C of t h e r e a l c u r r e n t d e t e c t board is a n upgraded version
of t h e f o r m e r r e a l c u r r e n t d e t e c t board where a n e x t r a immunity t o noise and
distortion is included as well as r e a l c u r r e n t r e m o t e monitoring and t r i p point
programming. T h e board i s revised t o revision l e v e l D f o r adapting i t t o t h e
high voltage configuration described above.
DETERMINATION O F THE RESISTIVE LOAD O R R E A L COMPONENT O F THE
CURRENT
The high v o l t a g e waveform is mainly a sinusoidal o n e with a c e r t a i n percentage
of distortion. T h e AC input line voltage is already a 5 t o 6% distorted waveform.'
The primary e f f e c t i s t h a t t h e peak of t h e voltage waveform does not necessarily
correspond w i t h t h e 90° position a n d d o e s n o t necessarily remain stable.
Since t h e r e a l component of i n t e r e s t during t h e hipot t e s t i n g is t h e o n e reflecting
dissipation a n d n o t t h o s e o f t h e harmonics with r e s p e c t t o t h e 60 H z p u r e sinusoidal
it is of primary i m p o r t a n c e t o d e t e r m i n e where e x a c t l y t h e peak of t h e voltage
waveform o c c u r s under any circumstance. T h e integration of t h e waveform
is not practically advised because t h e undesirable o f f s e t e f f e c t s a n d t h e low
pass filtering version of t h e integration would provide only a predetermined amount
of phase s h i f t which does n o t necessarily correspond t o t h e location of t h e peak
voltage waveform w h e r e w e know t h a t with a c a p a c i t i v e load t h e c u r r e n t waveform
has t o be z e r o a n d a n y value d i f f e r e n t f r o m z e r o is d i r e c t l y reflecting a resistive
component t h a t c a n b e modelled a s a resistive e l e m e n t in parallel with t h e ideal
capacitance. This a p p r o a c h p e r m i t s us t o d e t e r m i n e a dissipative c u r r e n t
component which c a n t o l e r a t e a l a r g e a m o u n t of distortion in t h e voltage
waveform. O n e big l i m i t a t i o n of t h e circuitry, however, is t h e sensitivity of
t h e d i f f e r e n t i a t o r to uncommon a m o u n t s of noise a n d distortion. T h e revision
level C of t h e real c u r r e n t d e t e c t board already upgraded t h e immunity with
e x t r a filtering a n d t i m i n g c i r c u i t r y which p e r m i t s t h e sampling of t h e leakage
c u r r e n t waveform only when t h e peak of t h e voltage waveform o c c u r s around
t h e 90° where ideally i t should be.
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The approach described above p e r m i t s us t o look a t t h e dissipative component of
t h e leakage c u r r e n t under conditions very f a r f r o m t h e ideally linear ones, like distored
voltage and c u r r e n t waveforms a n d non-linear capacitances. However, if distortion
and nonlinearities b e c o m e m o r e s e v e r e , a t o t a l l y d i f f e r e n t approach t o t h e problem
has t o be t a k e n d i f f e r e n t t o t h e linearizing one, but in this case t h e resistive
component would l o s e i t s meaning giving ground t o a n o t h e r concept like dissipating
power instead, which w e a r e prepared t o t a k e i n t o development.
REAL CURRENT DETECT CIRCUITRY REVISION LEVEL D
The voltage a c r o s s t h e voltage monitoring resistor R v is connected t o a differential
amplifier and its o u t p u t a t pin 1 2 of U1 i s f e d t o t h e phase shifter s o t h a t t h e output
a t pin 1 0 of U1 is leading a s m a l l a m o u n t f o r compensating f o r t h e different delays
in t h e circuitry. T h e output is applied t o t h e d i f f e r e n t i a t o r where w e obtain t h e
inverse of t h e d e r i v a t i v e with t h e leading z e r o crossing being coincident with t h e
positive peak of t h e voltage waveform, t h e output of t h e differentiator i s applied
t o t h e squaring a m p l i f i e r f o r obtaining a square waveform in phase with t h e derivative
but with t h e rising e d g e being coincident with t h e negative peak of t h e high voltage
monitoring waveform a n d this i s b e c a u s e t h e l e a k a g e c u r r e n t we want t o look a t
is out of phase with r e s p e c t t o high v o l t a g e by 180'.
On t h e o t h e r hand, t h e voltage monitoring signal is f e d t o U6, a timing circuitry,
through pin 1 of R N 3 which squares t h e waveform a n d produces t h e triggering of
t h e monoastable U7 t o set a single pulse out of pin 8 of U8 around t h e negative peak'
of t h e voltage monitoring signal. This pulse allows t h e z e r o crossing signal represented
by t h e rising e d g e of t h e output of 10. of U2 t o g o through U 8 and produces a signal
pulse of about 7 microseconds o u t of t h e output 4 of U8 coincident with t h e negative
peak of t h e v o l t a g e monitoring signal. This pulse i s used in t h e s a m p l e and holder
U4 t o sample t h e l e a k a g e c u r r e n t waveform which g e t s in through U8 coincident
with t h e negative p e a k of t h e v o l t a g e monitoring signal. This pulse is used in t h e
sample and holder U 4 t o sample t h e l e a k a g e c u r r e n t waveform which g e t s in through
pin 3 of U4 a f t e r being buffered by U6. Any positive value which is sampled is
reflecting a dissipative c u r r e n t and i s f e d t o t h e non-inverting amplifier f o r driving
t h e a m m e t e r . R 7 a d j s u t s t h e gain of this amplifier U3. T h e o t h e r half of U3 i s
used t o compare t h e tripping value with t h e a c t u a l c u r r e n t giving a failure signal
if this exceeds t h e former.
.
The dissipative value given by U 3 is a i s o given externally f o r monitoring purposes.
U6 also c a n a c c e p t e x t e r n a l t r i p point programming which i s selected through t h e
r e m o t e board a c t i v a t i n g t h e REMOTE signal through t h e pin 6 of t h e board. The
analog switch U 5 p e r m i t s t h e driving of t h e a m m e t e r while w e a r e in a test situation
and while t h e component of c u r r e n t in phase with t h e n e g a t i v e peak of t h e voltage
monitoring signal r e f l e c t s a dissipative c u r r e n t , in o t h e r words, is positive.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
A25 HANDS OFF/SWITCH SELECTABLE FAILURE POINTS
THEORY O F OPERATION
T h e board was designed t o contain t w o options: HANDS O F F a n d SWITCH SELECTABLE
FAILURE Points.
The HANDS O F F r e q u i r e s t h e o p e r a t o r o r controller t o hold t h e S T A R T line low during
a Hipot Test. If a Hipot T e s t is i n i t i a t e d a n d t h e START line is found high o r rclcased,
a RESET and F A I L signal of about 1 second is produced. The FAIL signal a c t i v a t e s
both fail light a n d buzzer. At t h e e n d of t h e fail indication t h e unit is completely
r e s e t if no r e s t a r t is a t t e m p t e d .
The SELECTABLE FAILURE POINTS provide 5 e x t r a p o t e n t i o m e t e r s f o r 5 e x t r a
t o t a l c u r r e n t f a i l u r e points. Any of t h e 6 pots c a n be s c l c c t e d by a 6 position switch
on t h e f r o n t panel. T h e s i x t h p o t is t h e s t a n d a r d e x t e r n a l pot on t h e r e a r panel.
CIRCUIT DESCRIPTION
This prototype b o a r d c o n t a i n s f i v e lOOK p o t e n t i o m e t e r s f o r giving out corresponding
v o l t a g e through pin 6, 8, 10, 1 2 , 1 4 t o t h e 6 s e l e c t a b l e position s w i t c h on t h e f r o n t
panel. This s w i t c h c o n n e c t s o n e of t h e a b o v e v o l t a g e s t o pin J of t h e A21 board f o r
comparison with t h e a c t u a l t o t a l c u r r e n t value f o r f a i l u r e t r i p p i n g purposes. Every
o n e of t h e p o t s c a n b e c a l i b r a t e d f o r tripping a t o p e r a t o r d e f i n e d value. The hands
off consists of a c o m p a r a t o r and a s e t of t i m e r which provides failure, r e s e t a n d s t a r t
signals t o t h e rest of t h e systems.
T h e s t a r t switch i s c o n n e c t e d t o pin 9 o? t h e e d g e connector. T h e c o m p a r a t o r U2
i n v e r t s and c l e a n s t h e start signal giving a high level o u t p u t when t h e s t a r t switch
i s held down. T h e test signal is a l s o i n v e r t e d giving a high l e v e l output when t h e
test is on. The i n v e r t e d s t a r t a n d test signals a r e given t o t h e inputs of t h e
monoastable U3.
While t h e t e s t signal in t h e monoastable is low, t h e o u t p u t t h r o u g h pin 1 of U3 is
high. If t h e test signal in t h e monoastable goes high d u e t o a test in progress, t h e
monoastable is g a t e d t o a c c e p t triggering f r o m t h e s t a r t signal. If t h e s t a r t signal
goes low during a test in progress, t h e monoastable w,iU b e t r i g g e r e d a n d a low level
pulse of about 100 microseconds is produced through pin 1, d e t e c t i n g t h e condition
when t h e s t a r t s w i t c h is r e l e a s e d during a t e s t .
This pulse from pin 1 of U3 t r i g g e r s o n e of t h e t w o t i m e r s in U1 through pin 6 of
U1. A high l e v e l pulse is produced a t pin 5 of U1 of about 1 s e c o n d which gives a
f a i l u r e a n d r e s e t signal t o t h e r e s t of t h e unit through Ql a n d Q2. At t h e e n d of t h e
1 second t h e unit will b e reset a n d a s t a r t c a n b e r e a t t e m p t e d .
T h e s t a r t switch is a l s o c o n n e c t e d t o t h e second t i m e r through C 2 , producing a high
l e v e l pulse a t pin 9 of U1 on t h e falling e d g e of t h e s t a r t s w i t c h signal, t h a t is when
t h e switch is depressed. This pulse drives Q3 giving a s t a r t pulse t o t h e r e s t of t h e
s y s t e m and g e t t i n g s t a r t e d .
When t h i s board i s c o m b i n e d with t h e Ohms Sense Option, t h e s t a r t pulse is given
by A24 board i n s t e a d . I t h a s t o b e n o t i c e d t h a t e v e n when t h i s option is used with
A 8 REMOTE C o n t r o l Option, t h e s t a r t signal has t o b e held down during a test.
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A24 OHMS SENSE CIRCUIT
FUNCTIONAL DESCRIPTION
-
The ohms sense option was developed t o d e t e c t if t h e device under t e s t presents
a minimum amount of impedance b e t w e e n HOT a n d NEUTRAL leads b e f o r e a HIPOT
TEST is actually performed.
Before a HlPOT TEST i s s t a r t e d t h e HOT and NEUTRAL leads a r e untied. The HOT
lead which is normally connected t o t h e HIGH VOLTAGE is momentarily connected
t o GROUND end a s m a l l voltage of 1.5 VAC RMS is applied t o t h e NEUTRAL lead.
-
-
The CHASSIS GND SENSE in t h e A21 board is used t o process t h e voltage across
HOT and NEUTRAL l e a d s during this operation, t h e r e f e r e n c e resistance used normally
for t h e ground sense t e s t is also momentarily changed t o a n adjusted pot t o provide
tripping for impedances in t h e 1500 ohms range. If t h e READY signal given by t h e
ground sense circuitry during t h e test goes high we will have a n ohms sense failure
a t t h e end of t h e ohms sense t e s t cycle. This failure r e s e t s t h e board and operates
t h e BUZZER in a pulsing mode.
If t h e test is passed, t h e HOT a n d NEUTRAL a r e tied back together, t h e reference
resistance for t h e ground sense test is reconnected and a start pulse is delivered
t o t h e A21 board t o s t a r t a Hipot Test.
CIRCUIT DESCRIPTION
-
When Hipot T e s t e r i s initially turned on K4 i s a c t i v a t e d , c o n t a c t s "A" and "D" of
Kq a r e closed, K2 i s closed. The "READYn light i s on and normal ground sense i s
performed on A21 board. When t h e start switch is depressed, pins 1 a n d 2 of U2
g o low pin 11 goes low. U1 i s triggered-and t h e output at pin 1 goes high f o r 1 second.
The pulse d e a c t i v a t e s Kq opening c o n t a c t s "A" and "D", normal ground sense is
interrupted. K2 i s open.
The 1 sec. pulse p l a c e s a high on pin 1 a n d 2 of Uq which c a u s e a low output a t pin
3, which a c t i v a t e s (closes) K1 and K3.
A t this time, t h e 1.5 VAC i s applied across R ohm, c u r r e n t flows t h r u R ohm and
K3 t o W3 which i s connected t o t h e Neutral wire of t h e d e v i c e under t e s t (DUT).
Current will r e t u r n f o m DUT t h r u t h e HV r e t u r n which i s t i e d t o chassis. The HOT
wire is momentarily connected to HV r e t u r n with K1 eontacts.
One side of R ohm is connected t o t h e chassis volt sense pin 1 3 of A21. This cicuitry
senses t h a t t h e impedance of t h e DUT i s approximately f o f t h e resistance of R
ohm. If this i s n o t t r u e , a high level will appear a t A 2 ~ - l O (READY). A t t h e end
of t h e 1 second pulse a pulse i s produced a t pin 8 of U1. If "READY" i s high, t h e
Fail Latch U3 will b e set. T h e FAIL L a t c h i s set, U s will b e unreset and give out
pulses t o sound t h e sonalert. The f a i l o u t p u t a t Q2 i s connected back t o t h e r e s e t
cicuitry s o any kind of f a i l u r e c a n r e s e t t h e board.
If t h e resistance of t h e DUT is equal t o o r l e s s than 1500 ohms, t h e negative edge
of a pulse g e n e r a t e d a t pin 8 of U1 will trigger U1-11. A 1 second pulse a t U1-9
is generated t o allow t h e normal ground sense circuitry t o s e t t l e down. When t h e
1 second pulse a t U1 ended, K q and K2 a r e a c t i v a t e d and K1 a n d K3 opened.
The trailing e d g e of t h e 1 second a t U1-9 triggers a 20 m s e c pulse a t U1-16 which
will s t a r t t h e n o r m a l c y c l e of t h e Hipot Tester. R15 i s used t o adjust t h e timing
of t h e fail pulsing signal.
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A8 REMOTE CONTROL
FUNCTIONAL DESCRIPTION
The A8 R e m o t e Control contains two options:
AUTOMATIC RESET
DIGITAL REMOTE CONTROL
The AUTOMATIC RESET option is supposed t o g e n e r a t e a short duration
FAIL a n d RESET pulse a f t e r a failure is l a t c h e d in t h e A21 Control Logic
Board. A t t h e end of t h e FAIL pulse t h e system is completely r e s e t if
no r e s t a r t i s a t t e m p t e d .
The DIGITAL REMOTE CONTROL option provides optical isolated control
and monitoring of t h e main functions of t h e unit. The inputs are: START
and RESET, SELECT A and t h e eutputs are: READY, TEST and FAIL
(ALARM).
There are t w o revision level boards, D a n d F. Revison D provides high
a c t i v e c u r r e n t driven inputs (25mA) a n d low a c t i v e TTL outputs.
Revision F provides low a c t i v e TTL inputs and l o w a c t i v e TTL outputs.
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CIRCUIT DESCRIPTION
AUTOMATIC RESET OPTION
While on TEST, a FAIL produces one s h o t negative pulse in U4. The falling edge
produces one s h o t pulse U5, t h i s pulse drives t h e a l a r m through pin B with Q2
and r e s e t s t h e s y s t e m through t h e board pin 5 with U1. A t t h e end of t h e pulse
U5, t h e system is r e s e t and t h e a l a r m is off. U1 also r e s e t s t h e system when r e m o t e
r e s e t is produced. If t h i s option is n o t needed, A, B, and C , D jumpers a r e placed
s o t h a t t h e FAIL signal d r i v e s t h e a l a r m as normal and t h e r e s e t from t h e r e m o t e
goes directly t o t h e RESET line.
OPTICAL ISOLATED C O N T R O L
This p a r t provides 3 inputs: RESET, START, and SELECT "A" a n d 3 outputs: READY,
TEST, and FAIL.
The input c u r r e n t r e q u i r e m e n t s are:
REV P
HIGH LEVEL:
LOW LEVEL:
REV -D
40 pA @ +5V
HIGH LEVEL:
1.6 mA f o r 0.4V
LOWLEVEL:
18mA @ +5V
0mA
The output c u r r e n t capabilities are:
HIGH LEVEL:
LOW LEVEL:
2.27mA @ +5V
2.27mA m a x @+5V
When U3 is driven, a r e s e t signal is produced at pin 5 of t h e board e i t h e r d i r e c t l y
through C, D jump or through U1 when t h e a u t o m a t i c reset o p t i o n is in.
When U2 is driven, a s t a r t signal goes o u t through pin 9 of t h e board.
When U9 is driven, t h e v o l t a g e a t pin 5 of U9 is low a n d Q1 does n o t drive t h e
reaiy K1 so t h e c o n n e c t i o n is t h e o n e shown "stand by" a n d A rise t i m e and t e s t
t i m e sare s e l e c t e d . If U9 i s n o t driven pin 5 of U9 g o e s high and $1 driven
a c t i v a t i n g t h e r e l a y , s o B r i s e t i m e and t e s t t i m e a r e s e l e c t e d .
.
When GROUND TEST s i g n a l through pin 1 0 i s low, U6 is a c t i v a t e d and a low l e v e l
is available from pin L of t h e board t o t h e r e m o t e connector.
When TEST is low, t h r o u g h p i n l l , in o t h e r words, when a TEST is in progress U7
is a c t i v a t e d and a low l e v e l is available f r o m pin M t o t h e r e m o t e connector.
When U8 is a c t i v a t e d w i t h t h e FAIL
signal e i t h e r f r o m pin 12 or pin B when
t h e a u t o m a t i c reset o p t i o n is used, a low l e v e l i s available f r o m pin N t o t h e r e m o t e
connector.
The r e m o t e controller's 5 V a n d GND a r e f e d through pins K and 1 5 respectively.
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REMOTE C O N T R O L OPTION 25 PIN C O N N E C T O R ASSIGNMENT
G N D (ISOLATED)
13
RESISTANCE
G N D (CHASSIS)
15
i?C/rC
EXT V REF
17
REM
EXT I T R I P
18
RESET
EXT V TEST
19
START
E X T V RISE
20
V OUT
21
I OUT
22
E X T IR O U T
IR O U T
-
+ 5 v (REMOTE)
FxmSY
TEST
23
FAILURE
25
SELECT A
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A l l UNDER C U R R E N T AND HANDS O F F OPTION
FUNCTIONAL DESCRIPTION
The undercurrent option enables t h e detection of a minimum amount of
current required during a hipot t e s t . If not, i t is interpreted t h a t t h e
device under test is not connected and a failure and reset signal a r e
produced.
The hands
hipot t e s t ,
this option
the remote
off option requires t h e s t a r t signal t o be held down during a
o t h e r w i s e a failure a n d r e s e t signal a r e produced. Even when
is used with t h e A8 R e m o t e option, t h e s t a r t signal given by
controller has t o be held down during a test.
CIRCUIT DESCRIPTION
The A l l board contains t h r e e circuits: t h e power supply, t h e under c u r r e n t
detection a n d t h e hands off.
POWER SUPPLY
Through pins 1 0 a n d 11 w e f e e d 1 8 VAC t o t h e full wave bridge r e c t i f i e r
C R l , 2, 3, 4. C1 a n d C 2 are t h e filtering capacitors and t h e regulator
7815 provides t h e +IS\', while U4 on Q1 combination provides t h e -15V.
The operation of t h i s combination i s t i e d up with t h e performance of t h e
+15V regulator a n d t h e precision of R2 and R 3 because pin 2 of U4 i s
obligated to b e practically zero.
-
UNDER C U R R E N T
T h e start s w i t c h is c o n n e c t e d b e t w e e n pin N ENABLE of t h e board and
t h e pin 9 READY of t h e board. This READY signal i s low if t h e chassis
ground test passes, a n d only t h e n w e c a n produce a low level ENABLE
when t h e start s w i t c h i s Gepressed. Depressing t h e switch also produces
a high level a t pin 3 of U1 while t h e switch is depressed. This high level
temporarily d r i v e s t h e transistor Q7 t o produce a start pulse o u t from
pin 8 of t h e board t o s t a r t t h e hipot test.
.
The TESTING signal is f e d through t h e pin 12 of t h e board and goes low
when t h e hipot t e s t i n g begins. While this signal is high, in o t h e r words,
not performing a t e s t , t h e transistor 4 3 is driven through CR13 continuously
holding down t h e c a p a c i t o r C10. Also through CR14, pin 2 of t h e t i m e r
U2 is held high so n o pulse c a n b e produced o u t of it.
The C a p a c i t o r C 1 0 i s p a r t of t h e t i m e r U3 and i t s charging up t i m e
determines t h e l e n g t h of t h e pulse produced by U3. U3 i s triggered when
t h e TEST signal g e t s low, in o t h e r words, when t h e test begins a n d a high
level i s produced a t t h e o u t p u t (pin 3) of U3. That output will remain
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high until t h e c a p a c i t o r C 1 0 c h a r g e s up t o 2/3 t h e +SV supply b u t e v e n
though t h e c a p a c i t o r C10 is now f r e e t o c h a r g e up b e c a u s e t h e TEST signal
is n o t driving through C R 1 3 during a t e s t , t h e c o m p a r a t o r US has t o drive
$3 a f t e r a c e r t a i n t i m e a n d d i s c h a r g e C10 o t h e r w i s e t h e output of U3
will f a l l t r i g g e r i n g U2 t i m e r which gives a pulse driving t h e FAIL a n d
RESET of t h e s y s t e m . In o t h e r words t h e c o m p a r a t o r U3 has t o s e n s e
t h e p r e s e n c e of c u r r e n t higher t h a n t h e tripping point b e f o r e C10 c h a r g e s
up t o 2/3 of t h e +SITsupply.
The tripping value i s f e d through pin R of t h e board. T h e return of t h e
a m m e t e r is f e d through pin E of t h e board and t h e c u r r e n t produces
correspondent p o t e n t i a l a c r o s s R 4 t o b e c o m p a r e d t o t h e tripping value.
HANDS OFF
If during a test t h e s t a r t s w i t c h i s r e l e a s e d t h e ENABLE line will g o up
a n d t h e t r i g g e r input of U1 will n o t hold t h e o u t p u t 3 of U1 high anymore.
The falling transition will t r i g g e r U 2 through C16 producing a FAIL and
RESET pulse.
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UNDER C U R R E N T FAILURE S E T
The under c u r r e n t d e t e c t f e a t u r e requires a minimum of three (3) seconds
t o react. T h a t i s t h e t e s t e r will not sense for under current until t h e
high voltage has r e a c h e d a c e r t a i n voltage. To s e l e c t t h e under current
fail point:
1.
S e t under c u r r e n t p o t t o maximum counter-clockwise position
t o s t a r t off.
2.
Follow t h e procedure for s e t t i n g t o t a l current fail point.
R e m e m b e r , FAIL will be indicated a t all c u r r e n t levels below
s e l e c t e d level.
3.
T h e s t a r t switches must b e depressed and held d u e t o t h e
HANDS O F F OPTION used in conjunction.
4.
Under c u r r e n t failure is indicated by:
5.
6.
a.
Fail light c o m e s on f o r o n e second
b.
Audible a l a r m is on f o r one second
c.
High voltage automatically shuts down
d.
Tester resets itself
Ground f a u l t failure i s indicated by:
a.
Fail light is on f o r o n e second
b.
Audible a l a r m on f o r one second
c.
High voltage automatically shuts down
d.
Ready l a m p goes off
e.
Requires manual r e s e t
High c u r r e n t (over c u r r e n t ) failure is indicated by:
a.
F a i l l a m p continuously on
b.
Audible a l a r m continuously on
c.
H i g h v o l t a g e s h u t s down
d.
Requires manual r e s e t
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-
ASSEMBLY DESCRIPTION: A25 HANDS-OFF/CURRENT FAIL
ASSEMBLY NUMBER: 0043Z-02 REV. C
RATING AND/OR
ITEM REFERENCE
DESCRIPTION
MFR. NUMBER
...................................................................
00433-02 ROD-L
RAW PCB
1 A25
.10uf
CAPACITOR
2 C1
lOOOpf
CAPACITOR
3 C2
CAPACITOR
.Oluf
4 C3-9
5 C10-11
CAPACITOR
lOuf 25V
CAPACITOR
.47uf
6 C1Z
DIODE
IN914
7 CR1.2
ZN2222
TRANSISTOR
8 Q1-4
RESISTOR, CARBON
47K 1/4W 5%
9 R1-5
1OOK
RESISTOR, VARIABLE
10 R6-10
10M 1/4W 5%
RESISTOR, CARBON
11 R11,12
10K 1/4W 5X
RESISTOR, CARBON
12 R13,19,23,24
4.7K 1/4W 5%
13 R14-16.20-22,25 RESISTOR, CARBON
1K 1/4W 5%
RESISTOR, CARBON
14 R 1 7
RESISTOR, CARBON
3K 1/4W 5%
15 R18
RESISTOR, CARBON
56K 1/4W 5'L
16 R26
17 U1
IC
NE556
18 UZ
IC
LM311
IC
74121
19 U3
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QTY.
-
PARTS LIST
ROD-L ELECTRONICS, INCASSEMBLY DESCRIPTION: A24 OHM SENSE BOARD
ASSEMBLY NUMBER: 00434-02 REV. C
ITEM REFERENCE
------------------1 A24
2 Cl
3 C2,C16
4 C3-C6,8,9,11,
5
6
7
8
9
10
11
12
13
14
15
16
17
C12,15,17,18
C7
C10
C14
Rl,R9,RlO,R13,
R14
R2
R3-RS
R8,R12,R17
R6,Rll
R7
R15
Rl6
Ul
U2,U3
U4
ie us
19 Ql,Q2
20 CR1-CR4
2 1 Kl-K3
22 K4
23 C13
DESCRIPTION
RATING AND/OR
HFR. NUMBER
00434-02 ROD-L
RAW PCB
CAPACITOR
CAPACITOR
CAPACITOR
1Ouf 25V
.33uf
.Oluf
CAF'ACITOR
CAP?X ITOR
CAPPICITOR
RESISTOR, CARBON
.OOluf
.47uf
.luf
4.7K
1/4W 5%
RESISTOR, CARBON
RESISTOR, CARBON
RESISTOR, CARBON
RESISTOR, CARBON
RESISTOR, VARIN3LE
RESISTOR, VARIABLE
IC TIMER
IC
IC
IC
TRANSISTOR
DIODE
RELAY DOUG-RAND
RELAY P & B
N O T USED
-
10M 1/4W 5%
1M 1/4W 5%
1M
3K
NE558
7400
SN75452P
NE555
ZN2222
IN4005
378992
HPl lD
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QTY.
-
ROD-L ELECTRONICS, INC.
-
ASSEMBLY DESCRIPTION: AB REMOTE CONTROL LOGIC W / AUTO-RESET
ASSEMBLY NUMBER: 00445-02 REV. F
RATING AND/OR
ITEM REFERENCE
DESCRIPTION
HFR. NUMBER
PARTS LIST
RAW PCB
CAPACITOR
CAPAC ITOR
CAFAC ITOR
CAPACITOR
IC
IC
IC
IC, TIMER 8 PINS
IC, TTL HEX INVERTER
IC
IC
RESISTOR, CARBON
RESISTOR, CARBON
RESISTOR, CARBON
RESISTOR, CARBON
RESISTOR, CARBON
RESISTOR, CARBON
RESISTOR, CARBON
POTENTIOMETER
RESISTOR, CARBON
POTENT1 OMETER
RESISTOR, CARBON
POTENTIOMETER
TRANSISTOR
TRANSISTOR NPN
RELAY
. .
DIODE
.
.
.
.
QTY.
00445-02 ROD-L
lOuf 25V TANT
6 . auf iov TANT
.Oluf
- 1 uf 10V TANT
HllBl OR HllB3
SN74122
NE555
SN7416
747
7403
330 OHM 1/4W
1K 1/4W 5%
1OOK 1/4W 5%
2K 1/4W 5%
4.7K 1/4W 5%
20K 1/4W 5%
330K 1/4W 5%
1M
10K 1/4W 5%
1495 DPDT SVDC
IN914 . . . .
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1
..
..
-
ROD-L ELECTRONICS, INC.
PARTS LIST
ASSEMBLY DESCRIPTION: A11 UNDERCURRENT BOARD
ASSEMBLY NUMBER: 00294-02
RATING AND/OR
ITEM REFERENCE
DESCRIPTION
HFR. NUMBER
........................................................................
1
2
3
4
ail
C1,C2
C3
C4.6,8,9,11,12,
C14.16
R A W PCB
CAPACITOR
CAPACITOR
CAPACITOR
ROD-L
lOOuf 25V TANT
500uf 16V
-01uf 1OOV CERAMIC
CAPACITOR
CAPACITOR
DIODE
DIODE
FUSE
TRANSISTOR
TRANSISTOR
TRANSISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
luf 12V
4.7uf 12V
1 N4OO2
IN914
4 AMP 125V
2N6109
2N3904
2N2222
22 OHM 1 W 10%
4.64K 1/8W 1%
470 OHM 1/4W 1%
10K 1/4W 5%
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
POTENTIOMETER
IC
2.2K 1/4W 5iC
4.7K 1/4W 5%
470K 1/4W 5iC
2OK 1/4W 5%
lOOK 1/4W 5%
1K 1/4W 5%
1HEG
UA78 15
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Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Artisan Technology Group is your source for quality
new and certified-used/pre-owned equipment
• FAST SHIPPING AND
DELIVERY
• TENS OF THOUSANDS OF
IN-STOCK ITEMS
• EQUIPMENT DEMOS
• HUNDREDS OF
MANUFACTURERS
SUPPORTED
• LEASING/MONTHLY
RENTALS
• ITAR CERTIFIED
SECURE ASSET SOLUTIONS
SERVICE CENTER REPAIRS
Experienced engineers and technicians on staff
at our full-service, in-house repair center
WE BUY USED EQUIPMENT
Sell your excess, underutilized, and idle used equipment
We also offer credit for buy-backs and trade-ins
www.artisantg.com/WeBuyEquipment
InstraView REMOTE INSPECTION
LOOKING FOR MORE INFORMATION?
Visit us on the web at www.artisantg.com for more
information on price quotations, drivers, technical
specifications, manuals, and documentation
SM
Remotely inspect equipment before purchasing with
our interactive website at www.instraview.com
Contact us: (888) 88-SOURCE | [email protected] | www.artisantg.com