Westinghouse KC-4 Installation, Operation & Maintenance Instructions Manual
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Westinghouse KC-4 Installation, Operation & Maintenance Instructions Manual

Westinghouse KC-4 Installation, Operation & Maintenance Instructions Manual

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Summary of Contents for Westinghouse KC-4

  • Page 2 TY P E K C-4 R EL A Y "'...

  • Page 3: Table Of Contents

    K C - 4 T Y P E REL A Y GENERATING STATION ra---l LINE BUS PROTECTIOII ZOME Fig. 2. Samp le System to Show A dvantages of B reaker-Failure Protection. The electromagnet has two pairs of coil s . CONST R UC T I O N coils of each p air are mounted diametrically opposite The type K C-4 relays consists of two phase...
  • Page 4 The front spring , in addition to holding the tar­ Case. get, provides restraint for the armature and thus con­ bus , the KC-4 s el ects which o f the two breakers has trols the pickup valve of the switch" failed"...
  • Page 5 -< "ll �- � � � � >­ -< "' "' STATION BUS PHASE ROTAT ION ;:; · ..;>I; ,... ----, "'" 1"\ � '< ::0 I) PRIMA RY 1 RELAYS OTHER BREA KER C I RC U ITS I) Q "' �...
  • Page 6 An essential function, the selection of the faulty harm and simplify the circuitry by permitting the breaker, is performed by the KC-4 . Relays 6 2X and 86LN relay to trip breakers and stop carrier symmetri­ and 62Y indicate that the fault has not been cleared.
  • Page 7 -< "ll "" �- .i.. � "C - � 3" <l.. -< � ;;· >c BKR -I TRIPPING LINE A RELAYING BKR.-2 TRIPPING BKR.-2 F AILURE DETECTION BUS L CLEARING ID .. "" �- 86 � TRIP ��� ..L N" "C. ._ BKR.- 3 86 _r-- TRI P B L OCK RECL .
  • Page 8 T Y P E K C-4 R E L A Y ---- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- T r i p C i rc u i t CHARACTE R I STICS &...
  • Page 9 -< "' "tl � IIEAKU fiiLUIE LOCKOUT IIEll U 2 TIMEI LINE I �­ > Hl.l IILI•2 I � TIIP au .• � � ;· LIIE ••. , ILOCI IECLOSII8 ::.- LIIE A llll-2 MLI..Z BKR.3 ::.- BLOCK RIC LOS IIG P COIL ..
  • Page 10 TY P E K C-4 R E LAY A c c e pt a n c e C h eck SETT I N G S & The following check is recommend ed to insure P h a s e G ro u nd O v e r c u rr e nt U n i t that the re lay is in proper working order: &...
  • Page 11 T Y P E K C-4 R E LAY -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- - I.L. 41-776.1A 3. The sensitivity adj ustment is mad e by vary­ ing t he te nsion of the spiral spring attached to the moving element assembly.
  • Page 12 NT&. CUTOUT (FROII T VIEW) 57-D-7904 Fig. KC-4 in FT 4 1 Case WESTINGHOUSE ELECTRIC CORPORATION N IWAR K, N . Printed In U.S.A. RE LAY-IN STR U M E N T D I V I S I O N...
  • Page 14 TY P ES SC, SC-1, SV AN D SV-1 R ELAY S TERMINAL EITriE� OYERCURREU UII I T CONTACTS CI.WREMT BREAK, WH[N USED ! s ������:E� REDiiAMDLE TEST Ill� SWITCH TEST .IACIC ___________ TE�IUL ....·-�-CHASSIS Of»UUEO ShORT SWITCn...
  • Page 15 T Y P E S SC , SC-1, SV AN D SV-1 R ELA Y S IMTUII A L SCHEMATIC • CONTACTS EITIIER MAKE iiiEAl AS R E Q UIRED FROII T VIEW TEST SWITCtL CVIITACTS EllNER MAKE ORE.h , OR CUIUIUT TEST JACl J.
  • Page 16 "FY P E S SC, SC-1, SV A N D SV-1 R EL AY S IMTEIIII A l SCitWTIC MAI(E dii: E .U IHOUIIfD • �·�r • tGii [ lCfS E I TIIEI COtHACT$ E I THE II OR IlEAl AS AS RE Q U I RE D �...
  • Page 17 TYP E S SC, SC-1, SV A N D SV-1 R EL A Y S CHARACTERISTICS OF TYPES SC AND SC- 1 RELAYS Range o f V.A. at Watts Adjustment M ax. Amps. 5 Amp s . Dropout Dropout 5 Amp s . Type Frequ ency Amp s.
  • Page 18 TY P E S SC, SC-1, SV A N D SV-1 R E LAYS III TERUL SCHEMATIC Curve 143285 11ax. S V-t,SC and SC-I Relays on D.C. COIITACTS - EI THER · or 11 i n. Settinq NUE OR IRUK AS IE�JUIIED TOP LEfT KAIIO U II I T ( FIIOIIT V I EK)
  • Page 19 I.L . 4 1- 7 66 . 1 B TY P E S SC, SC-1, SV A N D SY-1 R E L AY S IiDlA (Z. IIot.CS) � -- "--5 MA Jt ___ _ DRILL :�tFEFt�o , ' 77- D - 418 &...
  • Page 24 WEST I NGHOUSE EL E CTR I C CORPORATION RELAY- I NSTR U M ENT D I V I S I ON NEWAR K , N. Printed I n U.S.A.
  • Page 25 Westinghouse I.L 4 1 -7768 • • I N ST A L L A TI O N O P E R A T I O N M A I N TE N A N C E I N S T R UCT IONS...
  • Page 26 -< "tt "' & R ECTI FI E R :::0 I CS - 1 ARC-SU P P R E S SO R ASSY. FOR X CmlTACT ,... -< X U N I T l 1 U N I T l 1 U N I T SATU R A Tlt1G l 1 T A P B LO C K T R At�SF.

  • Page 27: The Lower Pin Bearing Is Secured To The Frame By A

    TY PE K C - 3 R E L AY ---- -- -------------------- -------------------- ----------� � -� L � 4 � 1 - � 7 � 7 6 � B GENERATING STATION (3 - - - l LINE PROTECTION BUS PROTECTIOII ZONE ZONE Fig.
  • Page 28 ,..,..,.,._ "ra•m lilT flMI r•can• ...- KM .. n. cn•- ••1 (� II.W,f.t.) (MITTON �==·�r.�r .. IIISTAII T .UIEHS u•n•• , .. ,.,.. IIIDI CATIIIG COIITACTOt SWI TCI IIUIT,F.Y,) ('TW · · ·'·'·'·, (IIT1'W Lm.F.t.) _SAT11 1 ATIIG TWSFCIItNEJ CIAII I I_IPIIIm IIIICATIH IIDICATIII .-rr•...
  • Page 30 front of the switch, which allows the operation indi­ The TRB- 1 rectifier in the primary - protection cator target to drop. The target is reset from the out­ circuits of Fig. 5 blocks the flo w of red-light super­ side of the case by a push rod located at the bottom vision current through the 6 2X coil.
  • Page 31 -< ;;:ol: LINE A L I NE A TR I PP I Nii FOR iKR. 2 FAILURE iKi · 2 TRIPPIHo 8711- LI N E � -< ¥1 lla.cns. 62X � B2 Y I CS 50-2 OTII£1 1 CS IUS L �...
  • Page 32 N ote that the bu:;; L timer circuit in Fig . 6 is the C H A R A C T E R ! S T I C S same as t hat u sed w ith the single bu:;; /single breaker arrangement in Fig.
  • Page 33 -< "tJ - ,_ _ - r LIIE Lllf TRIP�IMu OR 3 FOil B K R . 1 POS. � -- 9• -'- I..:IU� PilOT 110-1 86 LN 1 l :::0 Ol l _!}__ij PI-IlL I'HT. • • Llll£ L�NE LIIE 10-1 >...
  • Page 34 E N E R G Y R E Q U I R E M E N T S & PHASE OVERCURRENT UNIT ( 1 1 I 3 ) - 60 CYCL ES Ampere V A at VA at T ap V alue P .
  • Page 35 TYP E KC-3 R EL AY ---- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --� �-�L�.4� 1�-7�7�6 B S E T T I N G S thick panel mounting.
  • Page 36 !5 0 !1 0 � P I C U P :::i = 3 0 = 3 0 2. 0 DR P O U T 1 2. M U LT I P L E S OF T A P VA L U E C U R R E N T M U L T I P L E S OF P I C K UP S E T T I NG 184A992 184A991...
  • Page 37 TY P E KC-3 R E L AY -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --�I.L=- �4�1-�7� 76�8 j ust close. Then back o ff the stationary cont act 2/ 3 d-e current through the trip circuit to close the con­...
  • Page 40 W E S T IN GHOU S E E L E C T RIC CO R P ORA T ION R E L AY D E PA R T M E N T N EWA R K, N . J. Printed in U.
  • Page 42 T Y P E K C-4 R E LA Y ::> >.. "'!: ..!: "" � >.. � ...: ..

  • Page 43: Const R Uc T I O N

    The electromagnet has two pairs of coils. ' The CONST R U C T I O N coils of each pair are mounted diametrically opposite The type KC-4 relays consists of two phase one another, and a capacitor is connected in series <Ia...
  • Page 44 I n addition , where trols the pickup valve o f the switch. the line relays trip two breakers such as o n a ring bus, the KC-4 s el ects which o f the two breakers has OPER AT I ON �...
  • Page 45 "''I -< " �- � � r­ !:!.. l> -< " � STATION BUS PHA SE ROTATION 1, BREAKER TRIPPINR L I NE BACKUP B U S DI F F . BREAKER FAILURE ;;· PO S..� - - - - - ., �...
  • Page 46 , respectively . breaker 1 is energized by 62X or 62Y from line B . Sinc e the KC-4 current detector 50- 2 which i s s up­ Assume a failure of breaker 2 for a fault on line plied by breaker-2 current does not drop out , 62 of B.
  • Page 47 -< "'U " "' �· !-" > 3" -< ;;; · Cl.. BKR - I TRIPPING LINE A RELAYING BUS L CLEARING BK R,-2 TRIPPING BKR,-2 FAILURE DETECTION "' BKR. CKTS. � ,... OTHER BUS T RIP 86 _r-- ;;· LN-c_ _.
  • Page 48 T Y P E KC-4 R E L A Y ---- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --...
  • Page 49 -< "tt FAilutE "' ,!:>. IIEAI£1 LOCKOUT BRE.UEI 2 TIMU L I M E l i i E B � :!) , i" Tl 1P PR IMAIY PROTECT! 81LI·2 � .,., I � I I � ..� I B6LIU BILI2 ll..
  • Page 50 T Y P E K C-4 R E LA Y A c c e pt a n c e C h e c k S E TT I NGS & The following c heck i s rec ommend ed t o insure P h a s e G ro u n d O v e r c u rr e nt U n i t t hat t he r elay is in proper working order:...
  • Page 51 I . L. 4 1 - 776. 1 The sensitivity adj ustment is made by vary­ ing t he tension of t he spiral spring attac hed to t he moving element assembly . The spring is adjusted by placing a screwdriver of similar tool into one of the notches located on the periphery of t he spring adjuster and rotating it.
  • Page 52 (FROII T VIEW) 57 -D- 7C)O!J. Fig. KC-4 in F T 41 Case WEST I NGHOUSE ELECTRIC CORPORA T ION N IWA R K, N . Printed In U.S.A. R I LAY· I N STR U M I N T D I V I S I O N...

  • Page 53: The Electromagnet Has Two Pairs Of Coil S

    I . L. 41 -776.2E Westinghouse • • INSTA L L ATI ON O P E R A TI ON M A I NTENANCE INSTRUCTION S TYPE KC -2 H I G H SP EED OVERC U RRENT R ELAY...
  • Page 54 TY PE KC-2 H I G H SPEED OVERC U R RENT R EL AY A transformer and varistor assembly is used in The tap value is the minimum current required conj unction with the overcurrent unit. The to just close the overcurrent relay contacts . For transformer is of the saturating type which limits pick-up settings in between taps refer to the sec­...
  • Page 55 I.L. 41 - 77 6.2E TYPE KC-2 H I GH SPEED OVERC U RRENT RELAY 250-volt de type WL relay switch, or equivalent, I N DI CATI N G C O N TACTOR SWITCH ( I C S ) use the 0.2 ampere tap; for 48-volt de applications Close the main relay contacts and pass suf­...
  • Page 56 TYPE KC-2 H I G H S P EED OVERC URRENT R ELAY 2. The contact gap adjustment for the overcurrent If settings in between taps are desired, place the unit is made with the moving contact in the tap screw in the next lower tap hole and adjm: t reset position, i.e., against the right side of the the spring until the contacts just close at the bridge.
  • Page 59 TYPE K C -2 H I G H SPEED OVERC U R RENT R EL AY E N E R GY R EQ U I REM ENTS B U R DEN D ATA O F O P E RATI N G C U RRENT C I R C U IT KC-2 50 HZ VA AT VA AT...
  • Page 60 TYPE KC-2 H I GH SPEED OVE R C U R RENT R ELAY E N E RGY R E Q U I REM E NTS B U R D EN D ATA OF O PERAT I N G C U R RENT C I RC U IT 60 H ERTZ VO LT-AM PERES POWER FACTOR...
  • Page 61 T Y P E K C -2 H I G H S P E E D O V E R C U R R E NT R EL AY F P ICKUP OF PIC KUP ...J 1"0 80 % ...J �...
  • Page 62 TYPE KC-2 H I G H SPEED OVERC U RRENT RELAY D I A . 4 HOLES FOR . 250 MTG, SCREWS 3 5 l .19 0-32 (6 . 8 . 250 ( 209. 55 ) � .563 1 6 . 5 00 (14.30) ( 4 1 9 .
  • Page 64 W E S T I N G H O U S E E L E C T R I C C O R P O R A T I O N R E LAY-INSTR U M ENT DIVISION NEWA R K , N. Printed in U.S.A.
  • Page 65 ---� (.9 � (.g � <( ;:: � � - � DIMlNSIONa .. INCHII D I S TA N C E R E LAY - T Y PE K D - 1 0 ( l A M P I . C. S . ) I N T Y P E F T - 4 2 CA S E I N TE R N A L S C H E M AT I C - I 2...

  • Page 67: Contactor S Witch (Ics)

    M A I N T E N A N C E I N S T R U C T I O N S TY P E KC-4 O V E R C U R R E NT R E LAY CAUTION: Before putting relays into service,...

  • Page 69: With The Contact Closed, The Electrical Connec

    TD-5 timing re f ay, which is usually used I N D ICAT I N G CO NTACTOR SWITCH U N IT in conjunction with the KC-4 relay for breaker ( I C S) failure protection . For detailed data on the TD-5, The indicating contactor switch is a small de refer to instruction leaflet 4 1 -579.
  • Page 70 BLOCK L___. 1459 Cl0 S ub 2 Fig. 2. External Connections for the KC-4 Relay - Breaker Failure Protection of a Single Bus/Single Breaker A rrangement - One Timer per Bus. terminal 50-2, isolates the m ultiple trip circuits has been initiated. They energize the TD-5...
  • Page 71 TX are energized; TX seals around a normally-closed 8 6 B F contact cuts off the T D- S . 62X and Y so that only the opening of the KC-4 contacts can stop the timer. This m ay be needed In the primary breaker-tripping circuit, the when 62X and Y are energized by potential­...
  • Page 72 1 4 2 7C9 5 L___. S ub 9 Fig. 3. External Connections for the KC-4 Relay - Breaker Failure Protection of a Single Bus/Single Breaker A rrangemen t with One Timer per Breaker. set to accommodate the slowest breaker. Sep­...
  • Page 73 :OPTIONAL FOR SEAL-IN OF AND 62Y CONTACTS. Fig. 4. External Connections for the KC-4 Relay - Breaker Failure Protection of a Breaker-and-a-Half Bus Arrangement - One Timer per Breaker. in of B F I contacts as described for the single-bus plished by line relays, so these actions are re­...
  • Page 74 M any utilities consider this unlikely and provide no further protection aganist it. The only alter­ SETT I N G T H E KC-4 FOR B REAKER FAI L U RE PROTECTIO N native is to replace 52a with a separate low-s.et...
  • Page 75 T Y P E K C -4 R E L A Y two nuts on the stud and then turning the proper S ETT I N G S nut with a wrench. PHASE & G R O U N D OVERC U RR E NT U N IT For detail information on the FT case refer to The pickup current setting is made by means I .
  • Page 77 E N ERGY REQ U I R E M ENTS P HASE & G RO U N D OVERC U R R E NT U N IT - 60 Hz VA AT S AMPS. P.F. A N G L E AMPERE RAN G E VA AT TAP VALUE P.F.
  • Page 78 T Y P E K C - 4 R E L A Y . KC-4 50Hz B U R DE N DATA AM P E R E R A N G E VA AT TAP VALUE P.F. A N G LE VA AT S A M P S .
  • Page 79 T Y P E K C-4 R E LA Y ing the tension of the spiral spring attached to the All contacts should be periodically cleaned. A contact burnisher S# l 82A836H0 1 recom­ moving element assembly. The spring is adjusted mended for this purpose.
  • Page 80 6 2 9 A 5 7 6 188A64o Maximum Pick-Up and Drop-Out Time Curves tor Fig. 6. Fig. 7. Internal Schematic of the KC-4 Relay in the FT- 4 1 the Phase and Ground Overcurrent Units Case. CYL. (M I D:ILE...
  • Page 81 Fig. 1 1 . Contacts to Separate Terminals in FT- 4 1 Case. Closed Contacts in FT-4 1 Case. 5 7 - 0 - 7 9 0 4 Fig. 12. Outline and Drilling Plan for the KC-4 Relay in FT-4 1 Case.
  • Page 82 W E S T I N G H O U S E E L E C T R I C C O R P O R A T I O F\1 F I L . R E LAY - I N ST R U M E NT D I V I S I O N C O R A L S P R I N G S , Printed in U .
  • Page 86 ·"""" "' ·...
  • Page 87 M A I N T E N A N C E I N S T R U C T I O N S TY P E KC-4 OVE R C U R R E NT R E LAY CAUTI O N : Before putting relays into service,...
  • Page 88 S AT U RAT I 'J G T RA N S F O RME R 7·I 0 O R I g SAT URAT I N G T RA N S F O RM E R Fig. 1 . Type KC-4 Relay Without Case.
  • Page 89 TD-5 timing re f ay, which is usually used I NDICAT I N G C ONTACTOR SWITCH U N IT in conjunction with the KC-4 relay for breaker ( I C S) failure protection. For detailed data on the TD- 5 , The indicating contactor switch is a small de refer t o instruction leaflet 4 1 -579.
  • Page 90 - One Timer per Bus. terminal 50-2, isolates the multiple trip circuits has been initiated. They energize the T D- 5 of the KC-4 ' s from one another so that only the breaker-failure timer (62) through the KC-4 (50) target of the failed breaker will drop.
  • Page 91 TX are energized; TX seals around a normally-closed 8 6BF contact cuts off the T D- S . 62X and Y so that only the opening of the KC-4 contacts can stop the timer. This may be needed In the primary breaker-tripping circuit, the when 62X and Y are energized by potential­...
  • Page 92 C:Oflf T,t.eJ_IIULT III'UCATfQJI Of.l(c- .. ,ow:-.:ultUIIT 1427C95 SUB . Fig. 3. External Connections for the KC-4 Relay - Breaker Failure Protection o f a Single Bus/Single Breaker Arrangement with One Timer per Breaker. set to accommodate the slowest breaker. Sep­...
  • Page 93 � ND 62Y CONTACTS. Timer Fig. 4. External Connectio ns for the KC-4 Relay - Breaker Failure Protection of a Breaker-a nd-a-Half Bus Arrangem ent - One per Breaker. in of BFI contacts as described for the single-bus plished by line relays, so these actions are re­...
  • Page 94 Many utilities consider this unlikely and provide S ETT I N G THE KC-4 FOR B REAKER no further protection aganist it. The only alter­ FAI L U R E P ROTECTION...
  • Page 95 T Y P E K C - 4 R E L A Y ---- -- -- ------------------------------------ -- -- ----------- two nuts on the stud and then turning the proper S ETT I N G S nut with a wrench. PHASE G R O U N D OVERCU RRENT U N IT &...
  • Page 96 NE� FUNCTION DWG. NO NO. REO'D DEV. NO. TYPE TRB-2 ZENER TRIPPING UNIT 187A696 II LI NE KC-4 OVERCURRENT DETECTOR 188A640 1/BKR. POWER CIRCUIT BREAKER 1/ LINE TD-- 5 BREAKER FAI LURE TIMER 3515AI7 1 /BKR. BKR. FAIL.INITIATING AUX. 3500A85 I/ LINE AR •...
  • Page 97 I.L. 41 -776.1 K E N E RGY REQ U I RE M ENTS 60 Hz P HASE & G RO U N D OVERC U R R E NT U N IT - 60 Hz VA AT S A M PS. P.F.
  • Page 98 T Y P E K C - 4 R E L A Y -� �� �� �- -- -- -- -- -- -- -- -- -- -- -- -- -- - KC-4 50Hz B U R D E N DATA...
  • Page 99 I.L. 41 -778.1 K T Y P E K C-4 R E LA Y -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- - All contacts should be periodically cleaned.
  • Page 100 6 2 9 A 5 7 6 Maximum Pick-Up and Drop-Out Time Curves for Fig. 6. Fig. 7. Internal Schema tic of the KC-4 Relay in the FT- 4 "1 the Phase and Ground O vercurrent Units Case. OVER CURRENT CYL.
  • Page 101 Internal Schema tic of the KC-4 Relay with one side of Closed Contacts in FT-4 1 Case. Contacts to Separate Terminals in FT- 4 1 Case. 5 7 - D - 7 9 0 4 Fig. 12. Outline and Drilling Plan for the KC-4 Relay in FT- 4 1 Case.
  • Page 102 W E S T I N G H O U S E E L E C T R I C C O R P O R A T I O N R E LAY - I N ST R U M E NT D I V I S I O N C O R A L S P R I N G S, F= L.

  • Page 103: The Frame Serves As The Mounting Structure For The Magnetic Core

    Westinghouse I . L. 41 -776.2E • • INSTA L L ATI ON O PE R A T I O N M A I NTEN ANCE I N S T R U C T I O N S TYPE KC -2 H I G H SP EED...
  • Page 104 TY PE KC-2 H I G H S PE E D OVERC U R RENT R EL AY A transformer and varistor assembly is used in The tap value is the minimum current requir, e d conjunction with the overcurrent unit. The to just close the overcurrent relay contacts.
  • Page 105 TYPE KC-2 H I G H SPEED OVERCU RRENT RELAY 250-volt de type WL relay switch, or equivalent, I N D I CATI N G C O N TACTOR SWITCH { I C S ) use the 0.2 ampere tap; for 48-volt de applications Close the main relay contacts and pass suf­...
  • Page 106 TYPE KC-2 H I G H S PEED OVERC U R RENT R EL AY 2 . The contact gap adjustment for the overcurrent If settings in between taps are desired, place the unit is m ade with the moving contact tap screw in the next lower tap hole and adjust reset position, i.e., against the right side of the the spring until the contacts just close at the...
  • Page 108 INTERNAL SCHEMAnC SATURAT I NG TRANSFORMER I NSTANTANEOUS OVERCURREt1T LOWER CYL UN I T INDICATING VAR I STOR CO N TACTOR S W I T C H SATURAT I NG TRANS FORMER CURREtlT TEST JACK TEST SW I TCH VIEW FRONT 3 5 1 2 A l 9 Fig.
  • Page 109 TYPE KC-2 H I G H SPEED OVERC U R RENT R EL AY E N E R GY R EQ U I REM E NT S B U R D E N D ATA O F O P ERATI N G C U RRENT C I RC U IT KC-2 50 HZ VA AT VA AT...
  • Page 110 TYPE KC-2 H I G H SPEED OVERC U R R ENT R ELAY E N E RGY R EQU I R EM E NTS B U R D EN D ATA O F O P E RATI N G C U R R E NT C I RC U IT 60 H E RTZ POWER FACTOR POWER FACTOI FI...
  • Page 111 TYPE KC-2 H I G H SPEE D OVERCU RRENT R EL AY ICKUP L&J TO 80 % CKUP L&J M U L T I P L E S T A P VA L U E CU R R E N T (629A576 Sub.
  • Page 112 TYPE KC-2 H I G H SPEED OVERC URRENT RELAY OIA. 4 HOLES FOR . 250 MTG, SCREWS (6 , 35) , 190·32 8. 250 ( 209. 55) 1 6 . 5 00 ( 4 1 9 . 1 ) 0 .
  • Page 114 W E S T I N G H O U S E E L E C T R I C C O R P O R A T I O ir\1 R E LAY - I N ST R U M E NT D I V I S I O N C O R A L S P R I N G S, F L.

  • Page 115: And One

    Westin ghouse I . L 4 1 -776.4E • • I N S T A L L A TI O N O P E R A T I O N M A I N T E N A N C E I N S T R U C T I O N S TYPE SBFU STATIC CIRCUIT BREAKER FAILURE RELAY CAUTION : It is recomme nded that the user of this...
  • Page 116 T Y P E S B F U STAT I C CI RCUI T B R EAK E R FAI L U R E R E LAY F i g. P hotograph (front view with door open and cards out part way). r , s, F ig.
  • Page 117 SBF U . T h e buffers are connecte d t o a NOR Output R el ay circuit consisting o f a tran sistor and resi stor. The output of the NOR circuit c o nnects to a NAND The output relay, when used, is the Westinghouse...
  • Page 118 T Y P E S B F U STAT I C CI RCU I T B R E A K E R F A I L U R E R E L AY circuit in co nj unction w i t h t h e output of t h e o v er­ C H A R A C T E R I S T I C S current unit.
  • Page 119 T Y P E S B F U STAT I C C I RCU I T B R E AK E R F A I L U R E R E LAY T A B L E E N E R G Y R E Q U I R E M E N T S P.
  • Page 120 TY P E SB F U STATI C CI R C U I T B R EA K E R F A I L U R E R E LA Y Check the dropout ratio ( 9 4 to 9 8o/c of pickup T A B L E current) by reducing the applied a-c current until the C U R R E N T...
  • Page 121 TY P E S B F U STAT I C C I R CU I T B R E A K E R F A I L U R E R E LA Y switch is c l os ed . A l s o c h e c k a l l other outputs as Ad j u stab l e T i mer U n i t s h own on t h e l ogic d r awing.
  • Page 122 TY P E S B F U STA T I C CI R CU I T B R E A K E R F A I L U R E R E LA Y T I M ES ..J ..J 4 �...
  • Page 123 TY P E SB F U STAT I C C I R CU I T B R E A K E R F AI LU R E R E LAY S T Y L E R E F. R E Q T RA N S I STOR 83 7A61 7HO I 2 N 3 5 8 9...
  • Page 124 T Y P E SB F U STAT I C C I RCU I T B R E A K E R F A I L U R E R E LAY C I - G2.- C 4 C A PA C I T Oij REF.
  • Page 125 TY P E S B F U STAT I C CI R CU I T B R EAK E R FAI L U R E R E LAY 0.!5 IITA!!i01!1 H 0 9 M FO . ( 0) R E O e��LL�...
  • Page 126 TY P E S B F U STAT I C CI RCU I T B R EAK E R F A I L U R E R E L AY 0 4 7 M F O �� -----+-8��4���� +-- 2 1 2 - �...
  • Page 127 TY P E S B F U STA T I C C I RC U I T B R E A K E R F A I L U R E R E L AY I.L. 41 -776.4E CAPACITOR STYLE REF.
  • Page 128 T Y P E S B F U ST A T I C C I RCU I T B R EA K E R F AI L U R E R E LAY SINGLE TIMER MOUNT E D --;>3 B O A R D R A C I<...
  • Page 130 TY P E S B F U STATI C CI RCU I T B R E A K E R F AI L U R E R E LAY 849A437H04 . 0 4 7 M F O. 8 37 A 6 92 H 03 CAPACITOR S TYLE R E F.
  • Page 133 T Y P E S B F U STAT I C CI RCUI T B R EA K E R FAI L U R E R E LAY CAPACITOR NEG. C l - C Z � I I � -E --- "...
  • Page 135 TY P E S B F U STAT I C C I R CU I T B R E A K E R F A I L U R E R E LA Y, _B_� _ __ ST_Y��- -�'-- t _ CAPAC I T O R �...
  • Page 136 TY P E S B F U STAT I C C I R C U I T B R E A K E R F A I L U R E R E LAY BOARD STYLE TERM. 2 - I I - 12 TER M .
  • Page 137 -< "'tt �: l " g ' < , � .5 �- CONTROL VOLTAGE CIU BDS. -� ;:;o TO T£RM. I TERII I MAL BLOC! ;:;o �� m { ;:;o r­ ;:;o ;:;o - � PHASE TRIP P H ASE -..! "' 2 0 1 C l 6 9...
  • Page 138 -< "'0 V> "' * 152 y V> -<� � )lo­ 152 X � t!J, <�� o , ' " p------ j D.C. CONTROL YOLUQE TO TERM. ALL CKT.� B OS. - __j TERNIMAL "' SLOCK )»­ � r­ 81-2 11-1 * P O S .
  • Page 139 -< "'tt "TT )> 62 Y L T_ TO TERM 14 CONT�L NEG.I TO TERM. VOLTAGE )> � r� "' ; NEG "TT )> r­ POS. TRIP )> -< .l..!. � = �--- ----, � ;;; --� -<r �c I N PUT O U - TP UT _f_:_ �u...
  • Page 140 -< - - -- - - --- - -- "tJ PART OF ..,.. PART )> 62 X TO TEAtr.1 14 CONTROL TO TERM VOLTAGE ALL Cl'iT 805 )> � TERMINAL BLOCK T E R MINAL ..,.. B L O C K )>...
  • Page 141 T ERMINAL - - - -< � BLOCK Cl:l PART OF � :::tl I .,.-O TERM . GROUND + 20 V POS . D.C. CONTROL Cl:l VOLTAGE :::tl NEG. � � . . . -, [f1 1 1 � :::tl TERMINAL �...
  • Page 143 5 3 1 2 0 0661 8 (+ Z O V O C ) -< "0 203C762G02 �6��c J l - 2 9 · P O S I T I O N R E L A Y S T Y l E P O S I T I O N �...
  • Page 144 -< "'tJ * = I N PUT R A N G E 100 - 1 40 VD C )> R ----+- -- -- ---- -- --, ---- - J l - 8 * 6 2 X TERMINAL BLOCK * 6 2 Y J l - 6 ;;:o �...
  • Page 145 -< - - 62=� D. C . SUPPLY + TERMINATION D. C .. SUPPLY 62-1 JUMPER ( NORMALLY CONNECTED) > SEAL-IN FUNCTIONS �I lg:-1 :::0 � - � - - - - - -- - �I L.___ __fr- ---;- - - - , r-- - - - - - :::0...
  • Page 146 TY P E SB F U STAT I C C I R C U I T B R E A K E R F AI L U R E R E LAY R I N G B R E A K E R H A LF S C H E M E �...
  • Page 147 T Y P E S B F U STAT I C CI R CU I T B R EAK E R F A I L U R E R E LAY VOLTAGE + TRIP RATED D.C. r - - - - - - - - - - - - - - - - - - - - J <+- = 32 ::.::.
  • Page 150 .�. W E S T I N G H O U S E E L E C T R I C C O R P O R A T I O N Printed in U . S . A . R E LAY - I N ST R U M E NT D I V I S I O N C O R A L S P R I N G S , F L.
  • Page 151 Westi nghouse 1. L. 41 -77&.5A I N S T A L L A TI O N • O P E R A T I O N • M A I N T E N A N C E TY P E S B F- 1 C I R C U I T B R E A K E R FAI L U R E R E LAY CAUTI ON: It is recommended that the user of...
  • Page 152 trim pot. A test jack is also supplied to change the OPERATION control timer delay in conjunction with a tester if other than the factory setting is desired. The operation of the SBF- 1 is somewhat different than the conventional breaker failure A level detector circuit consisting of zener relay.
  • Page 154 It can be energized continuously at 1 1 0% of on the 0.2 amp tap and 0. 1 5 ohms on the 2 . 0 amp rated input voltag1�. tap. TRIP C I RC U I T Capacitive Effec1t The capacitive surge immunity is as follows The m a i n contacts will safely close 30 amperes (considering the 52a contact input present): at 250 V de and the seal-in contacts of the I CS will...
  • Page 155 I. L. 41 -776.5A on the timer module front plate and terminal 8 of resistor that is inserted on tripping and the over­ the relay (common negative). current fault detectors are set below the resistor current, the additional time for this interruption The control timer should be set for at least 1 6 must be included.
  • Page 156 timer to the relay so that the start input is con­ Acceptance Test nected to relay terminal 9 (through a voltage The following check is recommended to insure divider, if necesary). The stop input should be con­ that the relay is in proper working order. R efer to nected to the bottom test jack on the timer Fig.
  • Page 157 I. L. 41 -776.5A Remove jumper fro m test point TP6 and TP7 Calibration on the timer module. Use the following procedure for calibrating the relay if the relay has been taken apart for repairs N ow when the test switch to terminal 9 is clos­ or the adjustments have been disturbed.
  • Page 159 I. L . 41 -776.5A a. With 0.4 amp ac current flowing apply rated mately 0. 1 V less than voltage measured in relay voltage. M easure voltage at terminal 5 section a. of I C I to be 6.4V. Now increase the current 6.
  • Page 160 TABLE I E N ERGY REQ U I R EM ENTS 60 HZ TAP M U LT. 1 (0.5A P I C K U P) 3 (1 .5A P I C KUP) REED ( R R) C O NTACT OPEN* CLOSED OPEN* CLOSED...
  • Page 161 L . 4 1 -776.5A TABLE 3 C U R R E N T RATI N G C U RRENT R A N G E ( Phase a n d Ground) 0.5 to 1 3.5 Amperes TAP RAN G ES C O N TI N U O U S 1 S E C O N D 0 .
  • Page 162 SEAL- I N R ELAY (X) T RAN S FO RM E R T B T RA N S FO RM E R TA I CS I N D I CAT I N G CONTACT O R SW I T CH Fig.
  • Page 163 I. L. 41 -776.5A P OT E N T I OME T E R PA P OT E N T I OMETE R P C P OT E N T I OME T E R P G T RAN S FO RM E R T G R E S I STO R RS (right oblique).
  • Page 164 SIMPLIFIED INTERNAL SCHEMATIC USED UPPER REED RELAY LEFT TELEPHONE RELAY REO HANDLE TERMINAL OPERATED CHA,SSIS SHORTING SWITCH NOTE S : CURRENT TEST JACK TO OBTAIN A R CONTACT OUTPUT, MOVE REO ( L ) , ( R ) , ( LC) a (RC) DENOTE LEFT HAN D , RIGHT HAND, L E A D FROM TERMINAL I I TO TERMINAL 1 2 .
  • Page 165 I. L. 41 -776.5A POS. 14 � TO X R E LAY 24 VDC POS. 24 VDC FROM TERM. 3 OF OVERCURRENT DETECTOR MODULE RAT ED VDC T I M E R AND O U T P U T MODULE P I IS PA N E L MOUNTED 1 1 3 FOR GROUPS I 6...
  • Page 167 I. L. 41 -776.5A P1· 2 Pl - 3 -- -� 351 7A 76 Fig. 5_ Component Location for Timer Module 48 or 125Vdc rated relay...
  • Page 168 WHEN USED 35 1 7A 77 ponent Locatton for Timer Mod I u e 250Vdc rated relay. Fig. 6. Com...
  • Page 169 P O S . ( 3 1NPUT) 24 V D C TO T E R M . 4 OF 1 4 54C79G01 1454C79G02 TIMER OUTPUT MODULE 4 INPUT ;M;;t. C > CAPAC! T�R I;AI'At.:l T U I{ Ur..SCt�l P T I ,J.'l S T Y L E DLSCn:l r' T I O;.I STYLE...
  • Page 170 35 1 7A 78 Fig. B. Component Location tor 3 Current Input Overcurrent Detector Module.
  • Page 171 I. L. 41 -776.5A 35 1 7A 79 Fig. 9. Component Location for 4 Current Input Overcurrent Detector Module.
  • Page 172 T E S T T I M E R ( STO P ) Is ,.--o "-': .5 R A N G E 1 .5 AMPS 1 . 5 1 .5 AMPS 13.5 AMPS 4. 5 AMPERE PICKUP= TAP SETTING TAP MULT I PLI E R TO RH CON TACT TO RH CONTA C T OF AR R E LAY...
  • Page 173 R I NG BUS OR BREAKER AND A HALF SCHEME SINGLE B R E A K E R S C H E M E � -,., 62-2 liZ:Z <()" !8 W H E N 62 - 2 ( U S E D ) SBF-1 RELAY �...
  • Page 178 W E S T I N G H O U S E E L E C T R I C C O R P O R A T I O N Printed in U . S . A . R E LAV - I N S'T R U M E NT D I V I S I O N C O R A L S P R I N G S, F L.

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