Allis-Chalmers LA-1600 Instruction Book Download

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ALLIS-CHALMERS

INSTRU'CTION

BOOK

AIR CIRCUIT BREAKER

TYPE LA-1600

APRil, 1967

BWX-6638-5

Summary of Contents for LA-1600

Page 1: ...II l ALLIS CHALMERS INSTRU CTION BOOK AIR CIRCUIT BREAKER TYPE LA 1600 APRil 1967 BWX 6638 5 Ii ...

Page 2: ...GE G MAINTENANCE H RENEWAL PARTS OPERATION A OESCRIPTION I Manually Opera t ed Breaker 2 Electr i cally Ope rated Breaker B RACKING MECHANISM ORAWOUT INTERLOCK AND ll FTING BAR MAINTENANCE AND ADJUSTMENTS A MAINTENANCE B LUBRICATION C MAINTENANCE CLOSING D ADJUSTMENTS E CONTACT REPLACEMENT STATIC OVERCURRENT TRIP DEVICE A INTRODUCTION B DESCRIPTION I SELECTION OF SETTINGS 2 MAINTENANCE AND TESTING...

Page 3: ...TIC OVERCURRENT TRIP DEVICES TYPICAL BREAKER RATING PLATE AND CURRENT TRANSFORME RS SHAFT LOCKS AND CALIBRATION MARKS FOR STAT I C TRIP DEVICES PORTABLE TEST SET FOR STATIC TRIP DEVICES TYPICAL TRIP CURVES S E LECT I V E STAT I C TRIP TYPICAL TR I P CURVE S DUAL STATIC TR I P CONNECTIONS FOR FUNCTION TEST TYPICAL RELEASE MAGNET TYPICAL SECONDARY DISCONNECTS TYPICAL AUXILIARY SWITCH TYPICAL SHUNT T...

Page 4: ...bi1 1 ty for allied equi pment of any kind C VING AND INSPECT ON FOR DAMA E Immediate ly upon receipt of this equ i pment carefully remove all packing traces and examine parts checking them agai nst the packing llst and not i ng any damages incurred in transit If such is dis closed a damage claim should be fi Jed at once with the transportation compgny and Allis Chalmers notified 0 CAUTIONS TO BE ...

Page 5: ...ccessory devices should receive a thorough check t pri or to plac i ng the breaker I n serv f ce to be certain that adjustments j are proper and parts are not damaged 3 Cubicle mounted b reakers of the drawout type are equipped with a draw out interlock to prevent movement of a clos ed breaker i nto or out of the connected position See Section II of the Instruction Book for a description of the in...

Page 6: ...AALLIS CHALMERS _ Wl IGTi 4 1 1 r 1 I i C I I li r L _ I ll l ...

Page 7: ... cam 210 clockwise permits spring 217 to collapse toggle l inkage 213 220 At the same time trip latch 216 is reset by torsion spring 228 as shown in Oetai1 B Pushing down spring release latch hood 202A after the closing handle is returned to the normal vertical position releases the energy in springs 209 Through link 225 closing cam 210 is rotated counterclockwise against roller 219 which moves to...

Page 8: ...AM CETAIL It DETAIL c 209 SPRING 210 CLOSING CAM 211 PAWL 212 SPRING 213 TOGGLE LIIIKAGE 214 NUT 215 TRIP SHAFT 216 TRIP LATCH FIG 2 211 SPRING 218 STOP 219 R OLLER 220 TOGGLE LINKAGE 221 SCREW 222 RACKING SCREW 223 CLEVIS 224 RAIL TYPICAL OPERATING MECHANISM LY OPERATE f7 ft_ r1 225 LINI 226 PIN 227 228 SPRING l en I n l l r rn en n ...

Page 9: ...SPRING POSITION SWITCH 231 ARM 232 MOTOR C UT OFF SWITCH 233 PLUNGER 234 FLAT SPRING 239 MOTOR 240 GEAR SEGMENT 241 PIN 242 SCREW 243 NUT 244 R OLLER FIG 2A TYPICAL OPERATING MECHANISM ELECTRICALLY OPERATED BREAKER MARCH II 1967 72 34G 018 401 r T T 0 I I I I a T r TYPICAL WIRING DIAGRAM FOft ELECTRICALLY OPERATED BREAKERS OO IH fiG 3 T M IIA c i I I 10 c c ...

Page 10: ...aring disengaged The motor cut off switch is actuated by the movement of plunger 233 over pins 236 Approximately twelve seconds are requ i red for completion of the spring charging cycle The breaker may now be closed by pushing down spring release latch hood 202A as In the manually operated breaker or it may be closed electrl c lly through remote close control switch CSC This switch energizes spri...

Page 11: ... II AAWS CHALM ERS TRIP SHAfT SlpE VIEW FIG 4 TYPICAL RACKING MECHANISM a DRAWOUT INTERLOCK N ftiL 3 1967 72 440 910 401 c ...

Page 12: ...breaker should now be pushed along the rai ls to the DISCONNECTED position At the same time the racking clevises 405 should be checked to see that they are in correct alignment with cubicle fixed pins 403 Counterclockwise rotation of the operating crank wilt now rack the breaker Into the TEST pnd connected posItions At the TEST and connected positions interlock 408 Is In Its normal horizontal pos ...

Page 13: ...05429 TYPICAL MAINTENANCE CLOSING HANDLE ElECTRICALLY OPERATE D BREAKERS STEP 2 MANUAL TRIP ROD REFER FIG 2 DETAIL 11011 REFER TABLE 3 PG 7 FIGURE 5 205430 TYPICAL MAINTENANCE CLOSING HANDLE PROCEDURE MAINTENANCE CLOSING ...

Page 14: ...rgy springs 4 Remove arc chutes and examine for burned cracked or broken parts 5 Wipe the contacts with a clean cloth saturated with a non toxic cleaning fluid 6 Replace badly burned or pitted contacts See paragraph E Wipe all Insulated parts with a clean cloth saturated with a non toxic cleaning fluid 8 Bearing p l ns and other sliding or rotating surfaces should be cleaned and then coated wi th ...

Page 15: ...AN 609 STUD 610 SCR IY 611 SPRING GUIDE 61Z WASHEit 613 MAIN CONTACT 614 NUT 61 PIN 617 CONTACT fiNGER 618 ARC RUNNER 619 ARCING CONTACT 620 CONTACT 621 SUPPORT 622 SPRING 62l SCREW 624 CONNECTOR FIG 6 625 SPI C R 626 SCREW 627 SPRING 628 CONNECTOR TYPICAL PANEL ASSEMBLY MARCHI IM7 71 HO o21 401 ...

Page 16: ...e electrically operated breaker the actual maintenance closing operation is the same fo1 both the electrically operated breaker and the manually operated breaker Refer to Table 3 and Figure 5 TABLE 3 MAINTENANCE CLOSING CLOSING CONTACTS I Place blade of screwdriver between hood and spring release latch Push down spring release latch and hold it in this position 2 Pull closing handle DOWN All THE W...

Page 17: ...ATIC TR I P DEV I CE 205421 I 110DE L AG AG I DUAL STAT I C TRIP DEVICE l l I NA r 1 r I l li I 1 l 205420 MODE L D 0 1 205419 HODE L DG SE LECT I VE STAT I C TR I P DEV I CE FIG 7 SE LECT I V E STAT I C TRIP DEVICE TYPICAL STAT IC OVERCURRENT TRIP DEVICES DATE 2 21t 67 ...

Page 18: ... ...

Page 19: ...e five groups of transformers as shown in Table 4 _TAB L _ _ _____ R EN AN R S ______ _ _____ __ I l TPJ NSFORMER i GROUP NO t _ VAIL LtBLE CONTit UOUS CURRENT RATINGS AND KNOB POSITIONS 1 J _____ ___ ____ ___ ___ A 8 c 0 E I so Do 71J 8 I I 125 155 175 220 250 f 111 200 250 300 350 l 00 1 v 300 375 4SP 525 I 60Q I v 5oo 62s so s7s 1oo 1 VII 800 lOOO 1200 1400 1600 l t 1 The LA 600 and other 11LA ...

Page 20: ......

Page 21: ... ol lll tt I I I t J l J 1 l _ J I u I IJJ _ _ l 205424 205423 CAUTION LOOSEN SHAFT LOCKS 6EFOI E ROTATING KNOBS SHAFT LOCKS I r 205422 FIG 7B SHAFT LOCKS AND CALIBRATION HARKS FOR STAT IC OVERCURRENT TRIP DEVICES l CALl BRAT I ON REFERENCE POINTS l I l i f 1 J ...

Page 22: ......

Page 23: ...AAWS CHALMERS f J tt u _ 205243 2 24 67 205251 PORT ABLE TEST SET FOR STAT I C OVERCUR RENT TRIP DEV I CES TYP I CAL TEST A R RANGEMENT F I G 7C ...

Page 24: ......

Page 25: ...I I AALLIS CHALMERS I F I I 1111111 CURft NT IH IIIULTIPLf S OF PICK U I SELECTIVE STATIC OVERCURRENT TRIP EV1CE MODEL o o l W JUNE 15 1964 TYPICAL CURVE Tt 240 5 0 FIG 70 ...

Page 26: ...t I 1 1 f I a4 r A ALLIS CHALMERS I I T r I I ...

Page 27: ...ss contact fingers 617 with the breaker open Contact pressure should be between 20 and 30 pounds Arcing Contact Make Refer to Figure 6 With movable arcing contact in any one phase touching the mating stationary contact when the breaker is closed by the maintenance closing method see Table 3 the phase to phase variations should not exceed 062 Adjustment may be made by positioning screws 610 as in p...

Page 28: ... of the breaker E CONTACT REPLACEMENT Refer to Fi gu re 6 of main current carrying contacts and a rc i ng Init i al contact make and final contact break contacts The main con tacts are not subject surfaces are clad with an al l oy facing which wear and arc e r osion The con t act s tructure consi sts contacts ar ranged so that is by means of the arcing to arcing The actual contact greatly reduces ...

Page 29: ...i I I I A AWS CHALM ERS 801 TRIP ROD 802 MAGNET 803 PLATE 804 COIL 80 BREAKER TRIP ARM 806 RESET CAM 807 RESET ARM 808 SPACER 809 NUT FIG 8 TYPICAL RELEASE MAGNET MAR 2 1967 72 2 40 068 401 ...

Page 30: ......

Page 31: ...ker E CCNTACT_ BfE_lACEME Hl Re f e r to F i gure 6 of ma i n c u r rent ca r ry i ng con tac t s and a rc i ng i n i t i al con t act ma ke a n d f i na l con tact b r e a k con t ac t s The ma i n c on ta c t s a re not s ubj e c t sur faces a re c l a d w i t h a n a l l oy f ac i ng w h i c h wea r and a rc e r os i on T h e con tact s t r uc ture cons i s t s con tac ts a r ran ged s o t ha t...

Page 32: ......

Page 33: ...af ter rep l acemen t of the contact f i ngers 4 Mov i ng Arc i ng and Ma i n Contact E i ther mov i ng arc i ng con tac t 619 or ma i n con tact 6 1 3 or both may be removed and rep l aced as fo l l ows Fo l l ow the s teps ou t l i ned i n paragraph 3 or i f h i nge con tact f ingers are not to be rep l aced om i t these s teps and refer to paragraph 2 D i sregard the reference to the remova l o...

Page 34: ... de D C ene r g y t o t h e r e l ea s e magne t t r i p co i I and a l s o a regu l a t ed D C powe r s upp l y t o ope ra t e t ra n s i s t o r c i rc u i t s Poten t i ome t e r s or rheos t a t s con nec ted i n pa ra l l e l w i t h t h e a ux i l i a ry t ra ns f o rmers p rov i d e a n A C s i gna l vo l tage p r opo r t i ona l t o t he p r i ma ry c u r ren t Th i s ac ts a s t h e i n t...

Page 35: ...ay curves any comb i nat i ons of wh i ch may be se l ected b y sett i ngs on the fron t p l a te of the dev i ce Selecti v i ty be tween coo rd i na ted c i rcu i t b reake rs can be ma i nta i ned throughout t he f u l l i n t e r rupt i ng range of the c i rcui t breakers The Mode l 0 dev i ce mon i tors the c u r rents i n each of the three phases The a r rangemen t o f the curren t t i me cu ...

Page 36: ... i n t A Therefore t h e c i rcu i t w i l l ca r ry u p t o 500 Amps w i thout t r i pp i n g the c i rcu i t b reake r Above 500 Amps a t r i p ope ra t i on w i l l oc cu r The p i c k up s e l ec t i on I s con t i nuous and may b e s e t be tween ma r ks If des i red Us ua l p r a c t i ce I s to s e t a l l p i c k up knobs a t t h e same ma r k but th i s i s not neces s a ry and d i f f e ...

Page 37: ...of a s econda ry d i s connec t assemb l y wh i ch I s moun ted on the l ef t s i de of the br eke r Two b l ocks of t en term i na l s each can be mounted on the brenke r The s econda ry d i sconnec t as semb l y i s acces si bl e f rom the f ron t of the breake r and a l i gns wi th a s ta t i ona ry un i t i n the c ub i c l e The s ta t i onary con tact s t r i ps s hou l d be l ub r i cated w...

Page 38: ......

Page 39: ...i nt A Therefo re the c l rcu i t w i l l c a r ry u p to 500 Amps w i thout t r i pp i ng the c i r c u i t b reake r Above 500 Amps a t r i p ope ra t i on w i l l occu r Th e p i ck u p s e l ec t i on i s con t i nuous and may be s e t be tween ma r ks I f des i red Us ua l p r a c t i ce i s t o s e t a l l p i c k up knobs at the same ma r k b u t t h i s i s no t neces s a ry a nd d i f f e...

Page 40: ......

Page 41: ...i v i dua l l y I n s t eps of 301 4egrees Th i s adj us tment i s made by remov i ng cover 1202 and l i f t l n9 the e t l re rotor assemb l y ou t of case 120 1 after d i sconnect i ng arm 1205 from th 1 l l nkage Refer tG Deta i l C 1 i Cot ter p in 1 208 and bear i ng 1 206 a re removed t perm i t remova l of rotors 0204L f rom sha f t 1 207 To chan9e rotors 1 204 f rom a11 to b pos i t i on t...

Page 42: ...remote l ocat i on S i nce the s hunt t l p col 1 I s des i gned for a momen tary duty cyc l e an 11a11 aux l l l a ry contact swlltch I s us ed to i n te rrupt i ts c i rc u i t i mmed i ate l y af ter the breake r l s t r l pped Energ l za t i on of the coi 1 causes the a rma t u re to p i ck up and rota t e thie t r i p a rm counter c l ockw i s e to t r i p the breake r Extens i on s p r i ng ...

Page 43: ... 1 000 Amps Ground p i ck up set t i ng 40 200 Amps An ac t ua l ground current of 800 Amps i s f l ow i n g 800 A llps g r ound cur rent i s four t i mes 4X p i ck up and wi I I cause a t r i p ope ra t i on i n four end one ha l f seconds on the m i n i mum t i me band as s hown on the current t i me cu rve Fi gure 7E However th i s g round cur rent i s much l ess th n the phase p i ck up sett i...

Page 44: ...o g roups of t i me bands p rov i ded one f or l on g t i me delay and one for sho r t t i me de l ay cor respond i ng to the curves on F i g u r e 7 0 The knob a t the midd l e o f the l ef t s i de on t h e Mode l s 0 O G f ront p l a t e i s a three pos i t i on sw i tch ma r ked to i nd i ca te LONG T I ME BANO SETT I NG The t h ree pos i t i on s p rov i de f o r s elect i on of a M I N I MUM...

Page 45: ... l ocki ng anmatures The be l l a lanm re lay 1 5 14 coi I I s wi red to tenni na l s 7 and 8 of the s ta t i c tr i p dev i ce As th i s Is a l atch i ng type re l ay f the a l arm re l ay contacts 1 5 12 are reset e l ec t r i ca l l y to the open po S i t l on shown by actuati ng reset re l ay 1 5 1 1 If the dev i ce I s not s tab le dur i ng breaker ope ra t i on or l f ei ther arma ture faf I...

Page 46: ......

Page 47: ... ed Adj u s t i ng s c rew 1 408 shou l d be s e t to prov i de an a i r gup of zs bet e n the so l l no i d po l e head and a rma tu re w i th the dev i ce de t nt rg i ed as shown i n the f ron t v i ew A 06 gap shou l d be ma i n ta i n d between t r i p a nn 1 4 1 5 and t r i p ba r 1 4 1 0 when the dev i ce i s ene r g i zed w i t h t he b rr oke r c l osed a s shown i n Dc t a i I w P i ck u...

Page 48: ......

Page 49: ...s to c l ose or open an a l arm c i rcu i t upon automat i c overcur ent tr i pp i ng of the breaker o re l ay col 1 I s w i red to termi na l s 7 and 8 of the s tat i c tr p dev i ce Th l I s a l atch i ng typo re l ay and re l ay contacts 1 502 are reset to the open pqs i t l on shown by actuat i ng reset p l unger 1 506 Spacer washe rs 1504 are used to pos i t i on the rel ay to ensure cor rect...

Page 50: ... ...

Page 51: ...en ts between 500 Amps and 5000 Amps w i l l t r i p the breake r af ter a t i me del ay def i ned by the maxi mum l ong t i me curve Fi gure 70 C u r re n t s a bove 5000 Amps wi l l t r i p the breake r i n the t ime I n d i ca ted by the m i n i mum short t i me curve I f the phase p i ck up set t i ngs were changed to 811 625 Amps then the short t ime band wou l d be used for cu r ren ts of 62...

Page 52: ...of f t he sha f t Then e s u re the s ha f t l ock I s l oos ened s ee F i g u re 7B and t u r n the s h a f r ct un t e r c l ockw i s e a s fa r a s I t w i I I g o Keep t he s ha f t I n t b a t pos i t i on a d re p l ace t h e knob s o t h a t i t i s d i rect l y ove r t he red ca l i b ra t i on d o t T i g h t e n the s e t s c rew i n the knob W i th the s h a f t l oc k l oos ened the kn...

Page 53: ...ormat i on Tes t Proce Th i s sect i on w i I I des c r i be I n d e ta i l the s teps to be taken to ca r ry out the tes t s Tes ts may be conducted on the comp l e te c i rcu i t breake r e i ther I n the d i s connec ted cub i c l e pos i t i on or removed f rom the cub i c l e I t i s not requ i red to remove or d i s connec t any pe rmanent w i r i ng on the c i rcu i t b reake r as l ong as ...

Page 54: ...t h e A s e t t i ng w i I I g i ve fas ter t r i p t i mes S e t t i ngs other than 11A11 requ i re more cu r rent to get the des i red mu l t i p l es of p i ck up e g 3 Amps a t 1 1 1 1 s et t i ng i s requ i red for 3X p i ck up The funct i on tes t may be repeated us i ng term i na l s 2 and 3 4 Mode l A l and 0 or te rm i na l 3 2 Hode l AG and DG i t I s not recommended to tes t term i na l...

Page 55: ...ed a rma t u re does not reset d ur i ng t r i p opera t i on a s exp l a i ned above s pace r s 808 may be added to ob t a i n pos i t i v e res e t of the a rma t u re I f add i ng s pacers does not a i l e a rmatu re to be reset the magne t i c re l ease l a tch shou l d be rep l aced I f b reake r mechan i sm i s not a t fau l t Oo not a t tempt to d i s a s s emb l e the magne t i c re l ease...

Page 56: ......

Page 57: ...i I I I I Ij AWS CHALMERS I INSTRUCTIPN B O O I 1 A I R C I RCU I T BREAKER TYPE LA 600 APR I L 1967 ...

Page 58: ... MAI NTENANCE H RENEWAL PARTS OPERAT I ON A DESCR I PT I ON I Manua l l y Opera ted Br aker 2 E l ec t r i ca l l y Operated Breaker I B RACK I NG MECHAN I SM DRAWOUT I NTERLOCK AND L I FT I NG BAR MA INTENANCE AND ADJUSTMENTS A MAI NTENANCE B LUBR I CAT I ON C MA I NTENANCE CLOS ING D ADJUSTMENTS E CONTACT REPLACEMENT i STAT I C OV ERCURRENT TR I P DEV I E A I NTRODUCT I ON B DESCR I PT I ON I SE...

Page 59: ...P DEV I CES TYP ICAL BREAKER RAT ING P LATE AND CURRENT TRANS FORMERS SHAFT LOCKS AND CAL I BRAT I ON HARKS OR STAT I C TR I P DEV ICES PORTABLE TEST SET FOR STAT I C TR I P DEV ICES TYP I CA L TR I P CURV ES SE LECT IVE STAT I C TR I P TYP I CAL TR I P C URVES DUA L STAT IC T I P CONNE CT IONS FOR FUNCT I ON TEST TY P ICA L RE LEAS E MAGNET TYP I CA L S E CONDARY D I S CONNECTS TYP I CAL AUX I L ...

Page 60: ...ment of any k i nd C RECE I V I NG AND I NSPECT I ON FOR DAMAGE I mmed i ate l y upon rece i pt o f th i s equ i pment ca refu l l y remove a l l packi ng t races and exam i ne pa r t s chec ki ng them aga l n t the pick i ng l i s t a nd not i ng any damages I nc u r red I n t rans i t I f such i s d i s c l osed a damage c l a i m shou l d be f i l ed at onc w i th the t ransportat i on cowpany ...

Page 61: ...essory dev i ces shou l d rece i ve a thorough check pr i or to p l ac i ng the b reake r i n serv i ce to be certa i n tha t adj us tments a re proper and pa r ts a re not damaged 3 Cub l c l e oun ted b reakers of the d rawout type are equ i pped wi th a d raw out i n ter l ock to prevent movement of a c l os ed b r ake r i n to or ou t of the connected pos i t i on S ee Sect i on I I of the l s...

Page 62: ... c Of T A t u 11111 fit Of TAI 1 11 T ll Ul a F IG I TYPICAL LA 10 BREAKER OUTUI IIIAIICH 7 IM1 l 44 6 401 ce f U c T W 6 9 SPMP E en I n a rn J ft ...

Page 63: ...AGE 2 14 NUT 215 TRIP SHAFT 2 16 TRIP LATCH FIG 2 2 1 Z SPRING 218 STO P 2 1 9 ROLLER 220 TOGGLE liNKAGE 2 2 1 SCREW 2 2 2 RACKING S CREW 223 CLEVIS 224 RAIL TYPICAL OPERATING MECHANISM MANUALLY OPERATED BREAKER foo IARCH 2 1967 72 340 014 401 I H S tr W S t il U wz OETAIL jt DETAIL c 225 LINK 226 PIN 22l 228 SPRING D E en I n l 111 l ...

Page 64: ... J I pse togg l e l l n k fge 2 1 3 a n d 220 A t th e s ame t ime t r i p l a c ll 2 1 6 I s rese t b y tors i on s pr i ng 228 as s hown i n Oe ta i I 6 1 1 r s n i n g down s pr i n g re l eas e l a tch hood 202A a f t e r t he c l os i ng hand l e i s re t rned to the norma l ve r t i ca l pos i t i on re l eases the ene rgy i n spr i ng 209 Th rough l i nk 225 c l os i ng cam 2 1 0 I s rotate...

Page 65: ...OFF SWITCH 2 PLUNGER 2 34 FLAT SPRING 235 GEAR 236 PINS 237 TOGGLE LINKAGE 238 MOTOR GEAR BOX PINON 239 MOTOR 240 GEAR SEGfo ENT 241 PIN FIG 2 A T YPICAL OPERATING MECHANI SM ELECTRICALLY OPERATED BREAKER MARCH 10 1967 72 3f0 01 HOI T I TYPICAL WIRING OIAGRAhl fOR EL EC TRICALLY OPERATfO BR AI EIIS _ FIG 001 i i r rb 10 MAGfii TIG TRIP GOIL ...

Page 66: ... motor cu t o f f sw i tch i s ac tua ted by the movemen t o f p l unge r 233 ove r p i ns 236 App rox i ma te l y twe l ve s econds are requ i red for comp l e t i on of the s p r i ng cha rg i ng cyc l e The b reaker may now be c l os ed by pus h i ng down 5Pri ng re l ease l a t ch hood 202A as i n the manua l l y ope ra ted b reake r or I t ma y be c l osed e l ec t r i ca l l y t h rough remo...

Page 67: ... p i I I AALLIS CHALM RS T lf SHAfT FIG 4 TYPICAL RACKING MECHANISM a DRAWOUT INTERLOCK APRIL 3 1967 72 440 0IQ 401 ...

Page 68: ...u l d now be pushed a l ong the ra l l s t o the D I S CONNECTED pos i t i on At the s ame t i me the rack i ng c l ev i ses 405 s hou l d be checked to see tha t they a re I n cor rect a l l gn ent w i th cub i c l e f i xed p i ns 403 Counterc l ockwi se rota t i on of the ope ra t i ng crank w i l l now rack the b reake r I n to the TEST Jtnd connected pos i t i ons At the TEST and connec ted p...

Page 69: ...ove a r c chu tes and am i ne for bu rned c racked or b roken pa r t s 5 W i pe the con t a c t 5 w i th a c l ean c l oth s a t u ra ted w i th non tox i c c l ean i ng f l u i d 6 Rep l ace bad l y bu rned o r p i t ted contacts See pa rag raph E W i pe a l l i ns u l a ted pa r ts w i th a c l ean c l o th s a t urated w i th a non tox i c c l ean i ng f l u i d a 8e r i ng p i ns and other s l...

Page 70: ...J REL EASE L ATCH HOO P 205429 T YP I C AL MA I NTENANCE CLOS I NG HANDLE EL ECT R I CAL L Y OPERATED B R EA K ERS STEP 1 STEP 2 MANUAL TR I P R O D REFER F I G 2 DETA I L D R EFER TAB L E 3 PG 7 F I GURE 5 i 205430 TYP I CAL MA I NTENANCE CLO S I NG HANDLE PROC EDUR E I I MA I NTENANCE CLOS I N G ...

Page 71: ... y ope ra ted brea ker t he act ua l ma i n tena nce c l os i ng ope ra t i on I s the same for both t he e l ec t r i ca l l y ope ra ted b rQa ke r and the ma a l l y operated breake r Refer t o Tab l e 3 and F i gure s TABLE 3 1 A I NTfNANCE C LOS I NG VS G CONTACTS 1 P l ace b l ade of s c rewd r i ve r be tween hood and pr i ng re l ea s e l a tch Pu h down tpr l ng re l ea e l a t ch and ho ...

Page 72: ...DE 611 WASHER 612 CLE VIS 614 CONTACT 615 SUPPORT 616 S T U D 619 CONTACT FI NGER 620 ARCING CONTACT 6 2 1 NUT 62Z ARC RUNNER 617 MAIN CONTACT 62 3 SPRINGS 624 SCREW 618 PIN FIG 6 TYPICAL PANE L ASSEMBLY MARCH 8 1967 72 34Q 020 J 2 SPACERS 626 BAR 627 SCREWS 628 SPRING SE T SCRE W WRENCH 629 CONNECTOR 630 CONNECTOR ...

Page 73: ...e phase touch i ng the ma t i ng s ta t i onary con tac t when the breake r i s c l osed by the ma i n t e a nce c l os i ng me t h od see Tab l e 3 the phase to phase va r i a t i on s hou l d n o t ex ceed 0621 1 Adj us tmen t may be mad e by pos i t i on i ng s crews 608 as I n pa ra g ra ph 2 b u t i t i s es s en t i a l t h a t the ma i n con tact coo1press i on be ma i n t a i ned w i t h i...

Page 74: ...nnectors 629 and b30 A f t e r t he con tac t f i ngers a re repl aced connector 629 s hou l d be pos i t i oned i n the cen t e r of the s l ot i n the mo l ded base to a s s u re cor re t a l i gnmen t o f the pr i ma ry d i s connect f i ngers 2 S ta t i ona ry A r c i n g Con tact The s ta t i ona r y a rc i ng con tac t I s a pa r t of connector 629 and may be rep l aced b y proceed i n g as ...

Page 75: ... i gh t i n a v i s e and the open s l o t i n c l ev i s b l 2 p l a ced aga i n s t I t a s a re s t The l oca t i on of s pa ce r s 602 b04 a n d b25 s hou l d be noted To m i n i m i ze a dj us tmen t upon rea s s emb l y the pos i t i on of the two s c rews 608 r e l a t i ve t o p i n 6 1 8 s hou l d a l so be n o ted T hen the two e l a s t i c s t op nuts b2 1 s hou l d be l oosened and s ...

Page 76: ... ed t o p r ov i de D C ene r g y t o t h e r e l ea s e mu gne t t r i p co i 1 a n d a l s o a regu l a ted D C powe r s up p l y t o ope ra t e t rans i s t or c i rc u i t s Pote n t i ome t e r s o r rheos t a t s con nec ted i n pa ra l l e l w i t h t h e a ux i l i a ry t ra n s f o rme r s p r ov i de a n A C s i gna l vo l t a ge propo r t i on a l t o the p r i ma ry c u r ren t Th i ac...

Page 77: ... l ay c urves any comb i nat i ons of wh i ch may be s e l ec ted by s e t t i ngs on the f ron t p l a te of the dev i ce Se l ec t i v i ty be tween coo rd i nated c i rcu i t b reake rs can be ma i n t a i ned th roughout t he f u l l i n t e r rup t i ng range o f t h e c i rc u i t breake r s T h e Mode l 0 dev i ce mon i to rs the cu r rent s i n each of the t h ree pha s es The a r rangemen...

Page 78: ...herefo re t h e c i rcui t wi I I ca r ry up t o 2 0 0 Amp w i t hout t r i pp i ng the c i rcui t breake r Above 200 Amps a t r l p ope rat i on w i l l occu r The p i ck up s e l ec t i on I s cont i nuous and may b e s e t between ma r ks i f des i red U s ua l p ra c t i ce i s to s e t a l l p i ck up knobs a t t h e s ame ma rk bu t t h i s i s not neces s a ry and d i f f e re n t phases ca...

Page 79: ... ck u p s et t i ng 40 80 Amps An actua l g round current of 320 Amps I s f l ow i ng 320 Amps ground cu rrent I s fou r t i mes 4X p i ck up a nd w i l l cause a t r i p ope ra t i on I n four and one ha l f seconds on the m l n l m m t i me band as s hown on the current t i me curve Fi gure 7E Howeve r t h i s ground cur rent i s much l ess than the phase p i ck up set t i ng and wou l d not be ...

Page 80: ...ups of t i me ba n d s prov i ded one for long t i me delay and one for short t i me de l a y co r res pond i ng t o t he c u r ves on F i gu re 70 The knob a t the m i dd l e of t he l e f t s i de on the Mode l s 0 OG fron t plat e i s a th ree pos i t i on sw i t ch marked to indica te LONG T I ME BAND SETT I NG The t h ree pos i t i on s pro1 l de for s e l ec t i on of a M I N I MUM I NTERMED...

Page 81: ...rents between 200 M lps and 2000 Amps w l 1 1 t r i p the b reake r after a t i me de l ay def i ned by the max i mum l ong t i me cu rve F i gure 70 Cu rrents above 2000 Amps w i l l t r i p t he breaker i n the t i me I nd i ca ted by t he m i n i mum 1 h o r t t i me cu rve I f the ph se p i ck up s e t t i ngs were changed to 1 1811 250 Amps then the short t i me band wou l d be used for cu r ...

Page 82: ... i ng I t off t he shaf t Then be s ure t h e s haf t l ock I s l oosened see F i g u re 7 B and t u r n the s ha f t coun ter c l ockw i se as far as i t wi I I go Keep t he s ha f t I n tha t pos i t i on a nd rep l ace the knob so tha t i t i s d i rect l y ove r the red ca l i b ra t i on dot T i g h ten the set s c r ew I n the knob W i th the shaf t l oc k l oos ened the knob may now be tu r...

Page 83: ...ma t i on Tes t P r 0 Th i s s ec t i on w i 1 1 des c r i be i n d e ta l 1 the s teps to be taken t o ca r ry C ou t t he tes t s Tes ts may be conduc t ed on t h e conp l e te c i r cu i t b re a ke r e i t he r I n the d i s con nec t ed c ub i c l e pos i t i on o r removed f r om t he cu b i c l e I t I s no t r e qu i r ed t o remove or d i s conne c t any pe rmanen t w i r i n g on the c i...

Page 84: ...t the A s et t i n g w i I I g i ve fas t e r t r i p t i me s S e t t i ngs o t he r t han W requ i re more cu r re n t t o ge t t h e des i red mu l t i p l es o f p i c k u p e g 3 Amps at E set t i ng i s requ i red f o r 3X p i c k up The fun c t i on t es t may be repea t ed us i n g t e rm i na l s 2 4 and 3 4 Mode l A I a n d D o r t e rm i na l 3 2 Mode l AG and DG I t i s n o t recommend...

Page 85: ... CE 20542 1 HOD E L AG AG 1 DUAL STAT I C TR I P DEV I CE j 1 _ J I 0 I a_ _ t l V 205420 MODEL 0 D 1 2054 9 MOOEL DG SELECT I VE STAT I C TR I P DEV I CE F I G 7 S E LECT I V E STAT I C TR I P D EV I C E TYP I CAL STAT I C OV E RCURRENT TR I P DEV I CES DATE 2 24 67 ...

Page 86: ... ng loaded armat ure does not reset dur i ng tr i p ope ra t i on as expla i ned above spacers 808 may be added to obta i n pos i t i ve reset of the arma t u re I f add i n g s pacers does not allow a rma t u re t o be res e t the magne t i c releas e latch should be rep l aced I f breaker mechan i sm i s not a t fault Do not a t t empt to d i s a s s emb l e the magne t i c re l eas e latch as t...

Page 87: ...re a re f i ve g roups of t rans forme rs es shewn i n Tab l e 4 1 TAB LE l CURRENT TRANS FORMERS I _ TRANS FORMCR AVA I LAB LE C ONT I NUOUS CURRENT RAT I NGS I j GROUP NO ANO KNOB P OS I T I ONS j i A B C 0 E I 4o so 6o 10 ao I I 75 95 1 I 0 I 30 I SO I l l 1 25 1 55 1 75 220 2 50 I V 200 250 3oo 350 4oo I v 300 375 450 525 600 i l _ _ Thr LA 1 600 and other 1 1lA1 1 b reake rs have s i m i l a ...

Page 88: ...I_ t __ _ I I r r r 4 1 S I i I f V a tot i _ __ __ _ __ I l l l 1 J 205424 CAUT I ON LOOSEN S HAFT LOCKS iEfORr ROTAT I NG KNO BS SHAFT LOCKS 205422 F I G 78 SHAFT LOCKS AND CAL I BRAT I ON HARKS FOR STAT I C OVfRCURR ENT TR I P DEV I CE S 205423 CAL l BRAT I ON REFE R E NCE PO I NTS ...

Page 89: ... AALUS CHALM ERS 1 r _ r r f J 205 2 5 1 P ORTABLE T EST SET FOR STAT I C O V ERCUR RENT TR I P D EV I C ES 20524 3 T Y P I C AL TEST ARR ANGEMENT 2 2L b7 F I G 7 C ...

Page 90: ...AALLIS Ci IALMERS F I G 7 0 ...

Page 91: ... AALLIS CHALM ERS F I G 7 E 11 o _ _ ...

Page 92: ...RIABLE VOLTAGE TRAHSFORIAER FER P RAGRAPH 2 FOR OE SCHIPTION OF TE ST EQUIPMENT TO TA1P COIL ON CIRCUIT BREAKER _ FIG 7 F MODEL A I A 2 MODEL O D f TERMINAL B4 0Q CONNECTIONS FOR FUNCTION TESTS MARCH 7 1967 7 1 1 18 555 402 NODf l AG AG f OG TERMINAL BLOCK 00 NOT T E ST 0H TERMINAL 4 ...

Page 93: ...CAM POS I T I ON BRE A K E R OPEN 601 TR I P R O O 8 0 2 MAGNET 8 03 PLATE 804 COIL 805 B R E A K E R TRIP AR M 806 R E S E T C A M 80 7 R E S E T A R M 608 S PA C E R 6 0 9 N U T FI G 8 TYP I CAL R E L E A S E M A G N E T MAR 2 1 9 6 7 7 2 2 40 068 401 ...

Page 94: ... econda ry d l s connec t assemb l y wh i ch I s moun ted on the l ef t s i de of the breake r Two b l ocks of ten termi na l s each can be mounted on the breake r The s econda ry d i s connec t as s emb l y i s acces s i b l e f rom the f ront of the b reake r and a l i gns w i th a s ta t i ona ry u n i t i n the c ub i c l e The s t8 t l ona ry con tac t s t r i ps shou l d be l ub r i ca t ed ...

Page 95: ...w i th e shun t t r i p attachment for t r i pp i ng f rom a remote l ocat i on S i nce the shunt t r i p o l 1 i s des i gned for a momenta ry duty cyc l e an 1 1a 1 1 aux i l i ary con tact swi tch I s used to i n terrupt I t s c i rcu i t i mmed i ate l y af ter the breaker I s t r i pped Energ l za t l on of the c oi I caus es the a rmature to p i ck up and rota te the t r i p a rm coun ter c ...

Page 96: ...c rew 1408 shou l d be s e t t o prov i de an a i r gap of 2 5 1 1 be tween the s o l eno i d po l e head and a rma t u r e w i th the dev i ce de ene rg i zed as sho vn I n the f ront v i ew A 06 1 1 gap shou l d be ma i n t a i ned be tween t r i p a rm 1 4 1 5 and t r i p ba r J I J O when the dev i ce i s e ne rg i zed w i th t h e b reaker c l osed a s s h own i n Oe ta i 1 1 1A1 1 P i ck up ...

Page 97: ...se or open an a l arm c i rcui t upon automat i c overcurrcnt t r i pp i ng of the b reake r The re l ay co i l i s w i red t o termi na l s 7 and 8 of the s tat i c t r i p dev i ce Th i s Is a l atch i ng type re l ay and re l ay contacts 1 502 a r c res e t to the open pos i t i on shown by ac tuat i ng reset p l unger 1 506 Spacer washers 1 504 are used to pos i t i on the re l ay to ens u r e...

Page 98: ...ck i ng a rmatures The be l l a l arm re l ay 1 5 14 coi 1 I s w i red to t e rm i na l s 7 and 8 of the s ta t i c t r i p dev i ce As th i s i s a l a tch i ng type re l ay t he a l a rm re l ay con t act s 1 5 1 2 are res e t e l ec t r i ca l l y to the open pos i t i on shown by ac t ua t i ng res e t re l ay 1 5 1 1 I f the dev i ce I s not s tab l e du r i ng b reaker ope ra t i on or I f e...

Page 99: ... ...

Page 100: ... 1 204 may be adj us t ed i nd i v i dua l l y I n s teps of 30 degrees Th i s adj us tment I s rnade by remov i ng cover 1 202 and l i f t i ng the en t i re rotor a s s emb l y out of case 1 20 1 a fter d i s connec t i ng a rm 1 205 f rom the l i nkage Refer t o De ta i l 1 1C11 Cot ter p i n 1 208 and bea r i ng 1206 a re remov ed t o pe rm i t remova l of ro tors 1 204 f r om shaf t 1 207 To ...

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Allis-Chalmers LA-1600, Instruction Book

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Summary of Contents for LA-1600

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