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GE SLY81 A Instructions Manual
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GE SLY81 A Instructions Manual

GE SLY81 A Instructions Manual

Static, three phase directional phase distance relay
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GEK-498610
INSTRUCTIONS
STATIC, THREE PHASE DIRECTIONAL PHASE
DISTANCE RELAY
TYPE SLY81 A, SLY81 B
GENERAL ELECTRIC

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Summary of Contents for GE SLY81 A

  • Page 1 GEK-498610 INSTRUCTIONS STATIC, THREE PHASE DIRECTIONAL PHASE DISTANCE RELAY TYPE SLY81 A, SLY81 B GENERAL ELECTRIC...

  • Page 2: Table Of Contents

    GE K-49861 PAGE TABLE OF CONTENTS DESCRIPTION • • • • • • • • • • • • • • • • APPLICATION • • • • • • • • • • • • • • • •...

  • Page 3: Description

    GE K-49861 STATIC, THREE PHASE DIRECTIONAL PHASE DISTANCE RELAY TYPES SLY81A AND SLY81B DESCRIPTION Type SLY81A r e lay t h r e e pha s e, f i r s t s e c o nd z o ne...

  • Page 4: Application

    APPLICATION GEK-49861 The SLY81 relay utilizes a three input phase angle comparator for Z a1 the phase distance measurement. The three inputs for the phase A-B measurements are: Z a1 (I A - Ia) Operating Quantity V AB Polarizing Quantity K V AB l V AB ( I A - I...
  • Page 5 GE K-49861 w h i ch a r e r a t e d one ampe r e ( 1 amp ) rms w i l l ca r r y two amp e r e s ( 2 amp )

  • Page 6: Surge Withstand Capability

    TARGET A t a r ge t s ea l - i n un i t w i t h 0 . 6 and 2 ampe r e taps i s p r o v i de d fo r...

  • Page 7: Operating Principles

    GE K-49861 TABLE I I I TARGET RAT I NGS 0.6 Amp Tap 2.0 Amp Tap Minimum Operating amps amps Carry Continuously amps amps Carry 30 Amps for second seconds Carry 10 Amps for seconds seconds DC Resistance 0.78 0.18...

  • Page 8: Relay Reach

    GE K-49861 The t i m i ng d i a g r am f o r a t yp i ca l cond i t i on i n shown i n F i g u r e 8 .
  • Page 9 GEK-49861 nominal sensitivities signal quantities SLY81 relay ar e as follows: Polar izing Sensitivity: Sensitivity is one percent (1%) of r ated voltage. Overcurrent Supervision Sensitivity: Sensitivity is adjustable over the r ange shown in Table IV. TABLE IV OVERCURRENT ADJUSTMENT RANGE BASE REACH TAP ADJUSTMENT RANGE IN IN OHMS...
  • Page 10 GE K-49861 Fo r a pha s e t o pha s e fau l t whe r e IA - - I s, I A - I s 2 IA 0 . 2 7 ampe r e s o r I A 0 .

  • Page 11: Circuit Description

    GE K-49861 C I RCU I T DESCR I PT I ON i n t e r na l connec t i ons f o r types SLY8 lA and SLY 8 lB a r e shown i n F i g u r e s 2 and r e spe c t i v e l y .
  • Page 12 GE K-49861 ca r d comb i n es p r e v i ou s l y me n t i oned qua n t i t i e s p r od u c e v a r i o u s ou tpu t s i g na l s wh i ch a r e...

  • Page 13: Calculations Of Settings

    GE K-49861 sol i d s t a t e c i r cu i t r y r e l ay i nput con t r o l powe r ( i . e . , s t a t ion ba t t e r y) .

  • Page 14: Mob Setting

    For l i ne a ng l e s lowe r t ha n 7 0°, r e f e r to t h e local GE s a l e s o f f i ce . Hence t h e r each ZR 0 .
  • Page 15 GE K-49861 ope r a t i ng o n a fau l t . An app rop r i a t e s e t t i ng i s u s ua l l y b e t w e e n t wo and fou r c yc l e s p i c k up t ime .

  • Page 16: Receiving, Handling, And Storage

    GE K-49861 po t e n t i a l t r a n s forme r s ( TA, TC ) t h e t r a n s a c to r s ( XA, X B, a nd XC )

  • Page 17: Mechanical Inspection

    GE K-49861 ACCEPTANCE TESTS I mm e d i a t e l y u pon r e c e i p t t h e r e l a y I NS P E C T I ON ACCEPTANCE TEST...

  • Page 18: Tel Ephone Rel Ay

    The d u r a t i o n o f app l i ca t i o n o f the t e s t vol ta ge for bot h o l d and new r e l a y s s hou l d b y 6 0 s e conds .

  • Page 19: Detail Ed Testing Instructions

    GEK-49861 ( b ) T r a n s v e r s e Mode H ipot Te s t s ( Be tween c i r c u i t s ) : h i pot t e s t s between c i r cu i t s t h e...
  • Page 20 GEK-49861 Make test connections shown Figure particular phase being tested. (The test connection shown in Figure 24 may also be used. ) Adjust the load box until the ammeter indicates the desired test current (IT) . See Table XIII for the recommended test current for a desired reach.

  • Page 21: Testing Mho Characteristics

    GEK-49861 As the voltage is lowered, observe the waveform at the test point designated step e) . point where telephone r elay (K2) picks slight adjustment phase angle and input voltage will cause the waveform to be reduced null consisting only third fifth...

  • Page 22: Alternate Test Method For Reach Tests

    GEK-49861 2 X I T X ZR X -cos ( - flf) oc = ( 3 ) � = where angle read by phase angle meter in degrees 85° relay base reach angle in degrees All other parameters are as defined under equation (2) . Recommended angles testing...

  • Page 23: Overcurrent Supervision Tests

    GEK-49861 oper ation, has been set in co-ordination with the P2 potentiometer at the factory and sealed. Potentiometer Pl must not be readjusted. Potentiometer 4. 16 millisecond hertz 5. 0 milliseconds) pickup time. 4. 16 millisecond hertz character is tic; times longer that 4.
  • Page 24 GEK-49861 TABLE XVI OVERCURRENT SUPERVISION ADJUSTMENT POTENTIOMETER DESIGNATION ADJUSTMENT FOR PHASE PAIR Reduce voltage VT until continuity tester indicates that the main output contacts are closed. Reduce VT to approximately 80% of this voltage and maintain at this value. Turn potentiometer P2 clockwise until the continuity tester indicates that the main output contacts are open.

  • Page 25: Installation Procedure

    GEK-49861 Set current IT at the value shown in Table XIII and adjust phase shifter until phase angles meter reads approximately 75° . Close switch Sl and slowly reduce voltage until Channel Two of the oscilloscope goes low and measure the width of the timer input blocks on Channel One for this condition.

  • Page 26: Visual Inspection

    GEK-49861 prevent high frequency transient potential differences from entering the solid state circuitry. Therefore, with Terminal 10 connected to ground the surge capacitors are connected between the input terminals case. When hipotting relay, procedure given DIELECTRIC TESTS under the ACCEPTANCE TESTS section of this book must be followed.

  • Page 27: Periodic Testing And Routine Maintenance

    GE K-49861 PERIODIC TESTING AND ROUTINE MAINTENANCE In v i ew of v i t a l 1 l e of pro t e c t i ve r e l a y s t h e ope r a t ion...

  • Page 28: Servicing

    G E K-49861 SERVICING A r ecomme nded t roubl e s h oot i ng p rocedu r e i s s hown i n Tab l e XVIII . TABLE XVIII TROUBLESHOOTING PROCEDURE PROBLEM PROBABLE CAUSE TROUBLESHOOTING SEQUENCE Power supply Plus and/or Check +15V and - 15V test...

  • Page 29: Renewal Parts

    G E K-49861 TABLE XVIII ( Con t i nued ) TROUBLESHOOTING PROCEDURE PROBLEM PROBABLE CAUSE TROUBLESHOOTING SEQUENCE III. Relay will not 110SB 11 plug on the Place 11 0SB 11 plug in the SP card i n the "IN11 110UP pos i t i on for reach pick up when i t should on phase...
  • Page 30 GEK-49861 component on the card which has failed. By referring to the internal connection diagram for the card, it is possible to trace through the card circuit by signal checking and, hence determine which component has failed. This, however, may be time consuming and if the card is being checked in place in this unit, as is recommended, will extend...
  • Page 31 t...

  • Page 32: Appendix Ii

    G E K-49861 APPENDIX II t h e e v e n t t h a t SLY8l ope r a t i ng t i me de s i r e d f o r spec i f i c f a u l t loc a t ion, t h e...
  • Page 33 G E K-49861 Z R l Zone l r e lay s e t t i ng 0 . 9 (6) 5 . 4 Q ; 3 Q ; 0 . 5 6 5 . 4 Z R l Zone 2 r e l a y s e t t i ng 1 .
  • Page 34 Ave r a g e Ope r a t i ng T i me for F i r s t Z one Re lay - 5 0 he r t z l OA Ave r a ge Ope r a t i ng T i me f o r Second Zone R e l a y - 6 0 h e r t z l O B...
  • Page 35 T VAB \IA-I s)ZRI- �K2 ..LKI 0 ,--. .. cr � M O B 1-zj 1-'· � � � 3 � w ..R E AC H POL.ARtllt'(; 8 � SETTI N G F I LTE R SIG N AL �...
  • Page 36 G E K-49861 ( - ) E X T E R N A L P R E-R E GU L A S E E NOTE 42 41 SVAB 6 � � ° : SVBC 41 "' 40 � R I OS "' "' SVCA i28...
  • Page 37 G E K-49861 EXTER NAL P R E - R E G U L ATOR SEE NOTE � 1 V8 C 4 5 :::; 2 2 � � � 1 � "' � � 43 1 9 0 1 8 48 5 6 0 9 2 �...
  • Page 38 G E K-49861 x � T R I P P I N G D I R E CT I O N S U R G E G R O U N O C I RC U I T B R E A K E R �) 8MoB (SLY81B)
  • Page 39 G E K-49861 K3 R E LAY F i g u r e 5 ( 8 0 4 3 5 4 2 ) Rea r V i ew of Long r each Mod e l Ou t of C a s e...
  • Page 41 G E K-49861 ( S e t at 8 4 % ) F i g u r e 7 ( 8 0 4 2 9 8 6 ) Re s t r a i n t Se t t i ng D i a l I NPUTS 11 CL11 11 1 T...
  • Page 42 G E K-49861 F I R S T ZO N E R E L AY AVE RAGE T I M E I NCLU D I NG OUTPUT R E LAY REACH = 90 ° / o L I NE M I L E L I NE M I L E S O U R C E ::;...
  • Page 43 G E K-49861 S EC O N D ZONE RELAY I NC LUD I N G AVERAGE T I M E OUTPUT RELAY REACH = 1 7 5 ° / o OF L I N E M I LE L I N E M I LE S O UR G E �...
  • Page 44 G E K-49861 � <..9 if) o I­ -··>�• ,.._ � --..·�- <( 0::: : � >- 0::: <( ,.._ > l 'V N I � V\JON .:10 °/ o H:)\i3tl F i g u r e 1 1 ( 0 2 73A9 0 9 6 ) Reach Ve r s u s Fau l t ed Pha s e Vo l t a g e...
  • Page 45 1-zj ..�� li! R 2 0 t < l A - le l Z ] ( VA8 l l 0 lii R J O ..:J;=o ..(/) Ul 1 z] t"1 rv t< n oo oo I B - lc ) III R 5 0...
  • Page 46 G EK-49861 0 8 W S d Figur e 12B (0171C8706 [ 8 ] } Card Layout for Type SLY81A Signal Processing Card (SP}...
  • Page 48 G E K-49861 0 1 7 1 [ 8 7 0 7 P - 1 0 1 8 48 5 6 0 7 G - 1 )IE R -4 2 < 2 J < ( - V c• l 4 1 < 2 .
  • Page 49 G8WSd G E K-49861 (.!) • • • C 4 3 k k ! � ( 0 1 7 1C8 7 0 7 ) Ca r d Layou t f o r Comb i ned F i g u r e 1 4C P - 1 PCB D 1 5 2C 8 4 4 0 Pol a r i z i ng Ca r d ( CP )
  • Page 50 G E K-49861 0 J 5 2C 8 4 4 0 P - 1 0 1 8 48 5 4 2 9 G - 4 R 1 4 R 5 7 O OK > O,JJMFD JMFD s o v s o v 2 4 <+--- -- -- - - >...
  • Page 51 G E K-49861 08WSd F i g u r e 1 5C ( 0 1 5 2C8 4 4 0 - 3 ) Ca r d Layou t f o r Ope r a t e S i g n a l Ca r d...
  • Page 52 P H A S E C I R C U I T P H A S E C I R C U I T P H A S E c I R C U I T ..:J::o �- 1 0 1 5 ZCI431 1"'1 A SP1...
  • Page 54 G E K-49861 PCB 0 1 5 2 C 8 4 3 7 P - 1 0 1 9 48 5 4 2 6 G - 1 T O P I N I C A ALL D I DOES I N 4 ! 46 ±...
  • Page 55 "'ii .."l > O.'J S n "' O U1 4 0 < O O .n � co I C I � 3 2 < ( + 1 5VOLTS l '0 1-' ('t O'\ (t) Ul rt ..'0 ..H ::J"...
  • Page 56 G E K-49861 ...J ..> > > "' .." " "' "' .."' ., .., U (f) Q. <( � � "' ' � ...J "' ..� 0 "' ... I<...
  • Page 57 G EK-49861 Figur e 18C (0171C8709 SS Sh. l [ 8 ] ) Card Layout for 110-125 Volt Rated Input Power Supply Cards (PS)
  • Page 58 0 1 7 1CM 0 9 G -.a GEK-49861 ASM lll64B561l9 0,0 5 MF"D 6 B K I O n TEST l Mf'D PO I NT 2 0 0 V R 1 2 R ! S 1 / 4� Il l CR I LED! ! O n...
  • Page 59 G E K-49861 CO N N ECT I N G PLUG M A I N B R U S H C O N N E CTI N G B LO C K A U X I L I AR Y S HOR T I N G N OT E : A F T E R E N G A G I N G A U X I L I A R Y B R U S H C O N N ECTI N G P L U G...
  • Page 60 G EK-49861 S T U D 2 0 , 3 1 2 N U M B E R I N G 5 1 6 M M 0 0 0 0 0 G L A S S 0 0 0 0 0 1 .
  • Page 62 PR E - R E G U L ATO R U SED FOR RATE D I N P U TS N OT E I : EXC E E D IN G 1 2 5 V D C RELAY UNDER TEST I AM PE R E I'Zj P H A S E S H I F T E R...
  • Page 63 N OT E 1 : P R E- R EG U L ATO R U S E D FO R R AT E D I N PU T E O I N P U T S E X C E E D I N G 1 2 5 VO C t'Zj ..
  • Page 64 G E K-49861 * T H E '+ 1 5 V."T EST P O NT HAS A lOOK OHM E N T L IM I T ING RES I STO R MOU N TED O N T HE '' PS'' C ARD. SC OPE CHANNEL 1 AND SCOPE T R IGGE R C A RD...
  • Page 65 I AM P E R E VAR I A B L E AUTO T R A N S FO R M E R RELAY UNDER TEST 1-:r:j 1-'· P H A S E S H I F T E R �...
  • Page 66 G E K-49861 T I ME AV E R A G E OPE RAT I N G OPE R ATE S I G NA L I NTO II ) C I R C U I T , 6 0 H E RTZ R E LA Y S E E A P P E N D I X 3::: Z 2.Q...
  • Page 67 G E K-49861 IN P U T � E X T E R N A L W I R E 6 2 V S LY G G 2 V ( - ) (-) C _ __ __ __ __ I N P U T 250 VOLTS I S O J\...
  • Page 69 N OT E I : P R E - R E G U L ATO R U S E D FO R R AT E D I N P U TS 1 2 5 V D C EXC E E D ING l'lj P H A S E S H I F T E R RELA Y UNDER TEST...
  • Page 72 Protection and Control GE Technology Center 205 Great Valley Parkway Malvern, Pennsylvania 1 9355-1 337...

This manual is also suitable for:

Sly81 b

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