GE 12GCY51F1A Instructions Manual Download | Manualshive

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Summary of Contents for 12GCY51F1A

Page 1: ...I N ST RU C T ION S MHO Distance Relay Type GCY51F GEK 26437B Supersedes GEK 2643Th GENERALS ELECTRIC ...

Page 2: ...REACH MEMORY ACTION TRANSIENT OVERRREACH OPERATING TIME CONSTRUCTION CASE GENERAL ELECTRICAL TESTS DRAWOUT RELAYS GENERAL POWER REQUIREMENTS GENERAL RECEIVING HANDLiNG AND STORAGE PERIODIC CHECKS AND ROUTINE MAINTENANCE CONTACT CLEANING MECHANICAL INSPECTION SERVICING CONTROL SPRING ADJUSTMENT CLUTCH CHECKS CLUTCH ELECTRICAL TESTS BASIC MINIMUM REACH TESTS ANGLE OF MAXIMUM TORQUE REACH TAP CHECK M...

Page 3: ... a tripping rectifier for circuit isolation in addition to the auxiliaries needed for whatever type of pilot relaying scheme is selected If the GCYS1F is used in a pilot relaying scheme with the line side potential and high speed reclosing it is recorrieended that overcurrent fault detectors be used to supervise the trip circuits When setting the relay units it is reconnended that the offset setti...

Page 4: ...5 15 3 75 150 60 75 Lag 0 2 5 Ohms 255 Lag N 2 5 10 15 5 0 150 60 75 Faq 0 20 Ohms 75 Faq L ___L _steps Thcsc rridys are factory adjusted br the basic minimum reach dt the 75 deqree lag angle ot maximum rJr JIC 1 1 though the units can he adjusted to a 60 degree lag angle of maximum torque a reduction of the ciii urn reash can be expected self at 600 lag 3 reduction in reach jri at GO lag 2O reduc...

Page 5: ...M2 unit upper unit The offset is a fixed value and is selected by a link in an In or Out consideration The N 1 unit restraint transformer is located on the left side of the relay front view It has taps in one percent dnd 10 percent steps which are selected with two insulated tap plugs and movable jumper leads The N 2 unit reach taps are located behind the relay on a Bakelite tap block using links ...

Page 6: ...burden Imposed on each GCY51F A relays is shown in Table V AMPS HERTZ R X P F W 5 60 0 3 0 05 0 98 7 5 7 6 This data is for the 3 0 ohm basic reach tap of the M 1 and M 2 units The burden with the M 1 unit in the 1 5 or 0 75 ohm tap or with the M 2 unit in the 2 or 1 ohm tap will be slightly lower Potential Circuits The maximum potential burden imposed on each potential transformer at 120 volts 60...

Page 7: ...ree relays is listed in Table VIII The data is for a relay set at the maximum reach taps TABLE VIII AMPS HERTZ R X P F WATTS V A 1 50 11 90 16 40 0 587 11 90 20 27 Potential Circuits CIRCUIT R ix P F WATTS V A VARS TI 1 Restraint 19 60 32279 3 652 3 12 4 78 3 62 M 1 Polarizing 14 53 3817 0 872 7 53 8 63 4 21 TI 2 Restraint 11 65 31866 0 53 3 46 6 52 5 52 TI 2 Polarizing 15 42 J769 0 89 7 34 8 25 3...

Page 8: ...elay to provide the proper line protection Assume a 230kV line 100 miles long with a positive sequence primary impedance of Z pri 8O With a CT ratio of 1200 5 and a PT ratio of 2000 1 the secondary impedance becomes CT Ratio Z sec Z pri X PT Ratio Z sec ohms Set the M 1 first zone unit to 90 percent of the protected line section taking into account the dif ference between the line angle 0 85 degre...

Page 9: ...nit is used the forward reach setting of the M 1 unit is undisturbed This offset is used in a situation as described under APPLICATION Since the offset voltage supplied by the tra9sactor is inserted in the M 1 polarizing circuit only the forward reach of the unit into t ie protected line remains unchanged The tap setting used on the target and seal in unit is determined by the current drawn by the...

Page 10: ...x The flux in the front pole which is energized by a percent age of the same phase to phase voltage interacts with the polarizing flux to produce restraint torque The flux in the rear poTe which is energized by the two line currents associated with the same phase to phase voltage interacts with the polarizing flux to produce operating torque The torque at the balance point of the unit can therefor...

Page 11: ...is imperative that the relay reach zero percent of its setting Fig 7 shows that the M 1 unit under static conditions will not see a fault at zero percent of the relay setting regardless of the tap setting However under dynamic conditions when the memory action is effective Fig 7 shows that an M 1 unit with a 3 ohm basic minimum reach and 100 percent tap setting will operate if I is greater than 1 ...

Page 12: ...s the directional unit in a carrier current relaying scheme it is not necessary to control the transient overreach as was done in the M 1 unit The M 2 unit will have correct directional action during transient conditions Operating Time The operating time of the M 2 unit is determined by the same factors described for the M 1 unit The curves in Fig 10 are for the condition of rated volts prior to t...

Page 13: ... Since all drawout relays in service operate in their cases it is recommended tha they be tested in their cases or an equivalent steel case In this way any magnetic effects of the enclosure will be accurately duplicated during testing A relay may be tested without removing it from the panel by using a 12XLA13A test plug This plug makes connections only with the relay and does not disturb any short...

Page 14: ... files abrasive paper or cloth of any kind to clean relay contacts MECHANICAL INSPECTION 1 It is reconimended that the mechanical adjustments in Table XII be checked 2 There should be no noticeable friction in the rotating structure of the units 3 Make sure control springs are not deformed and spring convolutions do not touch each other 4 WIth the relay well leveled in its upright position the con...

Page 15: ...adjustments can be made using a special wrench 0246A7916 and a standard 3 8 inch open end wrench The special wrench is inserted into the unit between the top of the front coils and the contact head The wrench should engage the Bakelite part just above the cup This will keep the cup assembly from turning while adjusting the clutch With the special wrench holding the cup assembly secure the open end...

Page 16: ...3 06 15 Ohms R 11 N 2 75 Lag 6OV 2 94 3 06 20 Ohms R 12 Angle of Maximum Torque Check pickup currents at the angles indicated in Table XV to deteniiine if the angle of maximum torque is within limits TABLE XV TEST SET PICKUP ADJUST RELAY MODEL UNIT ANGLES VOLTAGE CURRENT 12GCYSIFIA N 1 600 and 90 45V 16 80 17 84 X 11 M 2 600 and 90 60V 16 80 17 84 R 22 12GCYS1F2A N 1 600 and 90 45V 3 36 3 57 X 11 ...

Page 17: ...ates It should pick up at tap value or sliohtly lower Do not attempt to interrupt the d c current by means of the M 1 contact If it is necessary to change the tap setting of the target seal in unit from 0 6 to 2 amps or vice versa observe the following procedure Assuming the tao is being changed from 0 6 to 24 remove one of the screws from the 1eft hand contact strip and insert it into the 2A posi...

Page 18: ...by checking a pickup 30 degrees off the angle of maximum torque Voltage aPPli 3 g 45 or 105 lag 3 Refer to the section on SERVICING if any adjustments must be made to the relay Before any adjustments are made to the relay with a transformer setting other than 100 percent the basic unit must be checked first for the basic minimum tap used RENEWAL PARTS It is recon1 erlded that sufficient quantities...

Page 19: ...TARGET SEAL iNS R63 GE K 264 37 M2 OFFSET TR 2 M2 TRANSFORMER Ml TRANSFORMER Ml UN1T Ml REACH TAPS FIG 1 8042842 FRONT VIEW OF THE 12 GCY RELAY AND CASE Ml M2 R12 R22 M2 UNIT xli 19 ...

Page 20: ... i i4 Ml TARGET SEAL IN Ml OFFSET M2 REACH TAPS Ml TRANSFORMER I Ml UNIT V E OF THE 12 CCV RELAY REMOVED FROM CASE 20 ...

Page 21: ...GEK 26437 FIG 3 011606891 0 SCHEMATIC CONNECTIONS OF THE N 1 AND N 2 UNIT OF THE 12GCY51F A RELAY OM3 M2 2 A M 2 OR ON 3 UNIT TC VIE TOE VIE t 21 ...

Page 22: ...APHICAL REPRES NTATION OF TH OPERATING PRINCIPIF 9QO I Z 11 TRANSACTOF TRANSFER IMPEDANCE ZE zIMPEDANCE BETWEEN RELAY FAULT F PHASE TO PHASE VOLTAGE IZF T TAPSE11INC IN PERCENT Q TRANSACTOP ANGLE I Z 11 TE TEo j 7 F 9O IR ...

Page 23: ...GEK 26437 x FIG 5 0208A3936 o IMPEDENCE CHARACTERISTIC OF THE UNIT M2 Ml 0 R 23 ...

Page 24: ...N GEK 26431 i 25 751 SLIHNG 1 2 OHMS ____ 1 0 I I I I V 60 SETTING i c OHM 75 I 50 I I 25 25 R OHMS 50 75 rc 3178A8174 O IMPLOENCE CHAR4CTERISTIC OF THE M UNIT 4 ...

Page 25: ...SITTINGS DATA TALN ITH PHASE TPHASE 4 FLULT AT V 1 UNIT ANGLE OF MAXIMUM TORQUE Z U U LAG 4 z STEADY TA1E CHARACTERISTIC E DYNAMiC CHARACTERISTIC T V RESTRAINT TAP SETTING H E THREF PHASE FAULT CURRENT H rHI J 1 _ Iz t t a 1 t J J i _ L 1 O iz r H tr iC3 z f z z T H JE L T 2 i z 1 f 1 E T H F Z 12 14 1 S L 4 b 12 16 20 24 28 75 OHMS REtCI A hT A rrRES FIG 0176A8172 Oj STEADY STATE AND DYNAMIC REAC...

Page 26: ...HO L 1i H r d 1N3 IID lflV d Ald it1fl 4 4 NJ DI S HO I SOd t 1 tt ti i L i A03T 11flV d 3d0d 38 3DV I1OA V13 d tj j DVI c8z J19 NV DV Jid l 3DO OS t r 1 DV1 09 1DN V j I f11 d E t t ar E 3 1I dO 1 ifl4I V I1DV 1E _ __ t OO I Nl L JVL NI V1 jj I 41 HO O 4 i flN Ii 3KV iir fFf O tIi DNL LVd dO DV H V fH fi E m tL 1 1rI n tr rr I ffI i r t 1 _ 4 j 4 J 4 t L j 1 ff ri4 i L I _ z r 4 r4 t_ L_ j Z L JF...

Page 27: ... C F I_U 4 2 C U Q O_ 1 0 O _JC 0 C 3F C X C C CD C JZ 4 C C C C F C V U F C C F C F UJ 4 r F CT LU Z X ED C C C F ED LU 0 C C D C C QUJ C 4 C D C F F F C7 CD U ED LUJ C C U X _ C U C CC LU C F ED C Q L EDC 0 SL F LU C C LU C C C 0 U U CC F _ F it I C 1 U CD 11 i 11 1 4 0 i 4 4 f 4VI 4 L I 44 if ii I liii 4 4j H 2 J 0 I N 4 4 44 Lt H V f 0 4 C C CL I r r CD C CD 13 V Y I V IC I V V tt C I IV 44 4 ...

Page 28: ...I F J J C F LI f C C C ID C UI C C UI C a Lr C LL 1 Cr L _i_ 3 C C L1 r II 3 3 C C F 4 4 J 4 C r I I C j 4 3 1 3F C L J CU _C LCj Lu C N C N S I C C F C C C C LI LI 1 3 C I C C Li I C _ _ F j _ I ri ri H r t L Z q r 4 __ t tL1tEU t4j i J f El L 4 t I 1l it L_ f E rtm 4 ji r j f f 4 1 zZL ZliL iLt j E i if 1 H H 4 1 4 4 4 _f I _ r i_ t 1_ _ s _ _ LL I H E E E 4 II I I 1 I 4 L 4 I I SISVd AD09 i31J ...

Page 29: ...7JET n cI n 4 cm n C l cm cm C I I 1 L4 I iii 00 H H Ii cnc E7H ZZ 4r II m I L1 ii I I Ii J ii C ii n ...

Page 30: ...SH CONNECTING PLUG TRAVELS 1 4 INCH BEFORE ENGAGING THE MAIN BRUSH ON THE TERMINAL BLOCK FiS 12 SEJION OF CASE AND CRADLE BLOCK SHOWING THE AUXILIARY BRUSH AND SHORTIN CONNECTING PLUG MAIN BRUSH NECTING BLOCK AUXILIARY BRUSH TERMI SHORTING BAR 30 ...

Page 31: ...GEK 26437 SHQPT FINGER FiG 13 OO A2371 O INTERNAL CONNECTIONS DIAGRAM 2 4 6 8 10 31 ...

Page 32: ...G K 26437 FC N O227A34O7 O TEST OIAGRAP1 FOR THL 12GCYS1F A RELI YS 0 C B A 3 AMM SH I FTER 3 ...

Page 33: ... 1 cm C cm C cm 4 r 2 2 C Q 2 C 2 cm C 2 m 2 1 C 2 cm C C on J _m S n p m a z m DO ...

Page 34: ... 33 s I LIV 339 11 Iic cJ LJ L CL A 1 fl tiN r I1 ni tLj3 i3L i NI i33 13 I I s 1 az ii c s 1 _ 1 i_ 11 L L t i ti 3j i ___ ___ ___ __ I L I bJ 4 L t3 4 bJ I L I u i J UI I UI 4 4 I Lt C 1 1 1 ...

Page 35: ...GEK 6437 E N h FIG 168 016582318 0 SH 2 EXTERNAL CONNECTIONS DIAGRAM FOR THE l GCY51F A RELAYS 35 ...

Page 36: ...GE Power Management 215 Anderson Avenue Markham Ontario Canada L6E 1B3 Tel 905 294 6222 Fax 905 201 2098 www gecomlindsyslpm ...

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