GE SBC23A Instructions Manual
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GE SBC23A Instructions Manual

GE SBC23A Instructions Manual

Static breaker backup relays
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  • Page 2: Table Of Contents

    GEK-45464 CONTENTS PAGE DE S CRIPTION APPLICATION . . Ope rati on Ge n e ra l • • • • • • • • • • • • • • • • • • • • • • •...

  • Page 3: Description

    GEK-45464 STATIC BREAKER BACKUP RELAYS TYPES SBC23A, SBC23B, SBC23C INTRODUCTION type SB C23A, SB C23B, SB C2 3 C re l ays a re s ta t i c breake r-fa i l u re rel ays d e s i gned to prov i d e sys tem backup pro tec t i o n i n t h e e v e n t o f a c i rc u i t breaker fa i l ure.

  • Page 4: Application

    -di v i de r e...
  • Page 5 GEK-45464 TABLE II BUS AND CURRENT CONTACT B FT B FT B FT B REAKER FIG. # FAULT FAILED FROM INITIATION CONTACT CONTACT CONTACT ARRANGEMENT LOC. B REAKE R AS SOC. FROM #1 TRIPS #2 TRIPS #3 TRIPS B REAKER S i ngl e Bus­...
  • Page 6 pment.

  • Page 7: Ge N E Ra L

    A, i n s tead o f s tud 9 as i n the SBC23A. I f the s e a l - i n fu nct i o n i s re qu i red, s tud l l A mu s t b e i n t e rna l l y jumpe red to s tu d 11, a nd s t u d 11 exte rnal l y co n n ected to ( + ) DC.
  • Page 8 GEK-45464 SB C23A The IT u n i t i n t h e SBC23A h a s two o u tput co ntacts. One co n tact h a s a commo n po i n t w i th t h e power s uppl y and i s u s ed a s a s e a l - i n fu nct i on, a s prev i o u sl y no ted.

  • Page 9: Ranges

    2 30V 6 0 Hz 0.5 0 The 1 nd u ct 1 ve ra t 1 ng 1 s ba sed on the 1 ndu ctance o f an a v e ra ge t r 1 p co 1 l .

  • Page 10: Surge Withs Tand Capability

    The test vol ta ge wa v e fo rm co n s i s t s o f a h i gh- fre qu e ncy damped osci l l a t i o n w i th a...

  • Page 11: Burdens

    GEK-45464 BURDENS The AC burden for each of the current transformer circuits is tabulated in Table VI for amperes of Hz current through each basic current setting range, minimum and maximum respectively. TABLE VI BURDENS FOR Hz RELAYS TRANSACTOR TAP SETTING {AMPS) IMPEDANCE (OHMS) POWER FACTOR (DEG.

  • Page 12: Characteristics

    Th i s powe r suppl y re gul a te s the vol ta ge to t he l o g i c funct i on s so t ha t they pe r fo rm prope rl y ov e r a ra nge o f appl i ed D C vol tage from 80% to 110% o f ra ted v o l ta ge.
  • Page 13 W i th th i s re duced fi l l - i n t i me r setting a nd no oth e r chan ge, a h i g h e r i nput cu r rent into the cu r rent detecto r ci rcu i t s w i l l be requi red i n o r d e r to produce a co nti nuous output from the fil l - i n t i mer.

  • Page 14: Settings

    S B C re l ays do not norma l l y h a v e D C vol ta ge app l i ed, t h e cur re n t de...

  • Page 15: Operating Principles

    DC vol ta ge...

  • Page 16: Printed Circuit Cards

    , o v ervol ta ge protecti o n a n d s i g n a l n o Rn ( R1, R3 , P1; R2 , R4, P2; Z1, Z2; D1, D2 ) Lev e l -detecto r c i r7 ca n be co n n ected to geth e r a nd then swi tched to +DC fo r i n i t i a t i o n o f the B/0 t i mer.cu i try n ece s s a ry to de tect AC l ev e l and co n v e r t...

  • Page 17: U Y U Ca Rd

    ON. When the C3 capaci to r vol ta ge reaches the fi r i n g l evel o f the un i junct i on a pul se i s genera ted, thus turn i n g o n the S C R Q4, wh i ch turns O ff Q5, resets the feed-back ci rcui t, d r i ves Q6 On a nd yi el d s a "0"...
  • Page 18 In s ho rt, th i s mea n s t h a t t h e ph ase vol ta ge o f g re a t e s t ma g n i tude i n t i...

  • Page 19: U Z U Ca Rd

    The GE a s sembl y, 0183 B2 304G4, s h own i n F i gu re 33 has a ra t i n g o f 48/125/25 0 VDC.

  • Page 20: Cu Rrent Dete Ctors

    nce...

  • Page 21: Acceptance Tests

    I f the mea s u reme n t i s l e s s t h a n o r g rea ter than th i s ran ge, cor r ect l y s e t the t i me to preci s e l y 8.7 mi l l i s eco nds by...

  • Page 22: Cu Rrent Detecto R P I Ckup Te

    GEK-45464 CU R RENT DETE CTOR PICKUP TEST Hav i n g ch ecked o r adjus ted the fi l l - i n t i me sett i n g pe r above, s e t up the tes t cur rent ci rcu i t o f F i gure 3 5 .

  • Page 23: Logic Fun Ctions, Settings And Tests

    No te tha t s i nce ra ted DC vol ta ge i s tr i gge r i n g the scope, t h e t r i g g e r fea t u re shoul d be ope ra ted i n t h e a t tenua ted mod e.
  • Page 24 GEK-45464 Pl ace the n i T n l i nk i n t h e nLo n Level Detector po s i t i o n a nd appl y te s t curren t to the rel ay. Upon mome n ta r i l y cl o s i n g the swi tch , ch eck t h a t t h e o h mme t e r...

  • Page 25: Installation Procedure

    Add i t i o n a l i n fo rma t i on on the XLA tes t pl u g s may b e obta i n ed from GE I - 25 372. Al l a l terna t i n g-cu rren t- ope ra ted d ev i ces a re a ffected by fre que ncy.

  • Page 26: Time R Test

    GEK- 4546 4 S i nce mo st opera t i n g compa n i e s use d i ffe r e n t procedure s fo r i n s ta l l a t i o n tes ts, the sect i o n un d r co n ta i n s a l l n ece s s a ry tes ts wh i ch may be pe r fo rmed as ACCEPTANCE TESTS...

  • Page 27: Periodic Checks And Routine Maintenance

    Th i s, h owe v e r, may be t i me con sum i n g, a nd i f t h e ca rd i s be i n g ch ecked i n pl ace i n i t s un i t, a s i s recomme nd ed, w i l l extend the outa ge t i me...
  • Page 28 GEK-45464 CAUTION Great care 111.1 st be taken i n repl aci ng components on the cards . Speci al sol dering equi pment su i tabl e u se del i cate sol i d-state components mu st be u sed and , even then , care must be taken not to cause thenna 1 duage to the components , and not to duage or bridge over the pri nted c i rcu i t bu sses.

  • Page 29: List Of F Igures

    SBC23B Tap B l ock Namepl ates SBC23C Tap B l ock Namepl ates SBC23A Rel ay , Removed from Case , ( Front V i ew) SBC23B Rel ay , Removed from Case , ( 3/4 Front V i ew)

  • Page 30: Out L I Ne And Panel Dri L L I Ng D I Mensi Ons

    GEK-45464 5 / 1 6 - 1 8 S T U D S S U R F A C E M T G . 6 . 6 2 5 1 6 8 M M 0 0 0 0 0 1 9 1 7 1 5 1 3 1 1 0 0 0 0 0 2 0 1 8 1 6 1 4 1 2 .
  • Page 31 .JOC ..,., ..s::: l T Z l � l b 2 � PQ',• / ER ..SUPPLY )::> *'" ..CX> � � LEV EL I'TI � "C DE T ..� ., t;...

  • Page 34: Rel Ay Appl I Cati On , S I Ng L E Bus , S I Ng L E Breaker

    GEK-45464 L I N E "C " L I N E i"A .. F i gure 5 ( 0 246 A227 9-1 ) Rel ay Appl i ca t i o n , S i n g l e Bus , S i n g l e B reake r L I N E ''c "...
  • Page 35 GEK- 45464 B U S NO RTH T I E s se . ,, L I N E A L I N E " c " L I N '' E ll S BC L I N E L I N E .. F'' L IN B U S T I E...
  • Page 36 GEK-45464 L l N E '' B' L I N E ''c" ro sse L I N E F i g u re 8 ( 0246 A2 27 8- l ) Rel ay Appl i ca t i on, Ri n g B u s...
  • Page 37 ..FAU LT u::l O C CU R S ""S NO R MAL C L E AR l NG T l M E .., .., )> ..T I M E ..N O R M A L C L E A R I N G B R E A K E R I N T E R R U P T I N G...
  • Page 38 ..'"T1 "'1 ..I'\) � SSC 2 1 F I LL- I N T I ME CAL I BRATI ON )> � PLOT OF MULT I PLES OF HAL F CYCLE � "- ± 1 0% I H I S I S A TYP I CAL CURVE . : •...

  • Page 39: Sbc23B Tap B L Ock Namepl Ates

    GEK-45464 OU T S B C 2 3 A Tap Bl ock Namepl a tes F i gure 11 ( 02 7 3 A9510- 0 ) A /0 S B C 2 3 B Tap B l ock Namepl a tes F i gure 12 ( 02 7 3 A9511- 0 ) A N D...

  • Page 41: Current Detector C I Rcu I T

    GEK-45464 => => ..1 ::E: ..1 � > � <.!:) 1- z: ­ > cr.> u > Z: IX ...1 - => 1- 1- ..1 cr.> u � a UJ UJ - 0::: 0:: =:1 - eo a 0 Q_ 0:.
  • Page 42 '"Tl -'· � ..SBC 2 1 CURRENT DETECTOR DROP-OUT T I ME OVERALL CURRENT DETECTOR DROP-OUT T I ME AS � A FUNCT I ON OF MULT I PL ES O F P I CK-UP SETT I NG . 0'"1 )::>...

  • Page 44: Current Detector Operat I Ng Time

    "'T1 ..I'\) I'\) CURRENT DETECTOR OPERAT I NG T I ME I'\) � � CU R RENT DETECTOR OPERAT I NG T I ME AS A FUNCT I ON OF STEADY STATE S I NGL E PHASE CU RRENT. I'\) .

  • Page 46: Type Sbc23B I Nternal Connecti Ons D I Agram

    GEK-45464 POWER SUPPLY CONNECTIONS. + 1 0 VOLTS. TO P I N S. A I O _, 8 10_, C IO_, Y 3 RE F ERENCE T O P I NS A I _. A 20_, B l _, 820_, C t_, C 20 X I I Y l V O LTS T O P I NS.

  • Page 47: Type Sbc23C I Nternal Connecti Ons D I Agram

    GEK-45464 POWER SUPPLY CONN EC TIONS TO P I N S + 10 VOLTS A fO� 8 10� C IO� R E F ERENCE T O P I N S A I -' A 20� B l., 82 0 -' C I_, C 20 X I I Y l -1 0 V O LT S T O P I �JS A 1 1_, 81 1 ., C I I _,Y4...
  • Page 50 r - - - - - - - - TOP V I EWS r - - -, � -L - i_ ,- -Y - 1 _; - .,., 2N2222A 2N�2 2 1 ..2N325 1 ( � I O Y DC ) ""5 0 .
  • Page 51 (+ IO VD C ) ..)::> .., ..R 1 2 I O K R l 4 � T P 5 2N 2222 A �..• • ..R I 0,6. 8K • "C ('") T P 6...
  • Page 52 ..1 5 K 6 . 8 K )::> -l=>o I N 4 009 ('""') rl" (") rl" ('""') < R l 4 f'l"' � T P 5 rl" R 1 5 � 2 2 K 2N 2 2 2 2 A � 4 .7K �...
  • Page 53 GEK-45464 r - - � 11 X 11 F i g u re 3 1 ( 02 2 7 A7 09 6 - 0 ) Fu l l Wa ve B r i d ges fo r t h e SB C Rel ay Ca rd )
  • Page 54 ..D 4- �7K.n. I N 4 1 4 8 POW E R "1 + s �o R E � I � TO R E Xi E R NAL � ; I'\) TO C A RD (SE E TA'B LE) (+tO) I'\) I N 5 0 &...

  • Page 56: Fi L L -I N Timer Setti Ng Test C I Rcu I T

    GEK-45 46 4 I NSTRUCT I ON S : 1 8 ( - ) . I . APP LY RATED DC TO RELAY TERvl i N ALS ( + ) AN D 2 . CH ECK TH AT TH E CT CU RRENTS I NTO TH E RELAY C I RCU I TS EQU AL ZERO .

  • Page 57: Current Detector Test C I Rcu I T

    GEK-45464 CAUT I ON : U SE XLA I 3 TEST PLUG NOTE TH E DC POLAR I ( -l) & # 1 7 # 1 8 ( - ) . TE�� I N AL PLACE AN OSC I LLOSCOP E I NPUT AT "A"...

  • Page 58: Overal L Timi Ng Test C I Rcu I T

    GEK-45464 CI RCUITS AT CONTACT TERMINALS # 1 3 AND # 1 4 SYSTEM rAUTION AN XLA I 3 'l tST PLUG ) MUST BE REMOVED TEST ( USE SET AMM E TER CURRENT ( A ) TO 5 T I MES TH E P I CK-UP CURRENT L EVEL .
  • Page 60 Protection and Control GE Technology Center 205 Great Valley Parkway Malvern, Pennsylvania 1 9355- 1 337...

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Sbc23bSbc23c

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