GE IBCG51E21 Instructions Manual Download | Manualshive

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GEH-2032

POWER

SYSTEMS

Courtesy of NationalSwitchgear.com

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Summary of Contents for IBCG51E21

Page 1: ...S GROUND DIRECTIONAL OVERCURRENT RELAYS I v 1 5 r T r V Types IBCG51E21 and Up IBCGS2E21 and Up IBCG53E21and Up IBCG54E21 and Up IBCG77E IBCG78E I ffffftAL MANAGEMENT DEPARTMENT 6ENERALA ELECTRIC PHILADELPHIA PA Courtesy of NationalSwitchgear com ...

Page 2: ...UG BLOCK TARGET TIME OVERCURRENT UNIT TAP SCREW SEAL IN UNIT DRAG MAGNET DISK SPRING ADJUSTMENT RING LOW GRADIENT CONTACT STATIONARY LOW BACKSTOP SCREW GRADIENT CONTACT MOVING DIRECTIONAL UNIT TIME OVER CURRENT UNIT MAGNET AND COIL 4 ASSEMBLY THYRlTE CRADLE TRANSFORMER Type IBCG5 IE Courtesy of NationalSwitchgear com ...

Page 3: ...hould be used in cases where the fault current magnitude is depend ent mainly upon the location of the fault in relation to the relay and only slightly or not at all upon tbe system generating setup The reason for this is that relays must be set to be selective with maximum fault current flowing For fault currents below this value the operating time becomes greater as the current is decreased If t...

Page 4: ...ll operate repeatedly within one or two per cent of the same time CURRENT COILS The continuous and short time ratings of the 4 operating coil circuits are shown in Table The current polarizing coils have a rating of 5 amperes and a one 1 second rating of 150 amperes RATINGS OF OPERATING COIL CIRCUITS Ratings Cont One Sec Rating A m p s 1 5 100 l 1 5 2 2 5 3 4 5 6 5 200 4 5 6 8 10 12 16 10 220 l Th...

Page 5: ... residual circuits of current transformers The burden is therefore only imposed for duration the ground fault and need be considered only for this brief period TABLE IV CIRCUIT OF DIRECTIONAL AND OVERCURRENT UNIT OPERATING COILS AT GO CYCLES BURDENS AT MINIMUM PICKUP I React Ohms 20 0 2 65 0 76 5 10 0 17 0 44 1 40 0 16 0 042 Volt 3 Factor Min 22 5 5 60 2 90 0 83 13 3 5 60 1 40 0 85 0 96 0 51 8 15 ...

Page 6: ...I SEAL IN UNIT TOC TIME WERCURREMT UNIT D DIRECTIONAL UNIT SI SEAL IN UNIT TOC TIME OVERCURRENT UNIT D DIRECTIONAL UNIT m SHORT FfUGER SHORT FINGER IBCG5 IE 4 IBC52E Relay Cl D C2 1 OPER C2 Cl D 1 P2Vpi PER Cl D SI C2 7 TOC c2 WOUND SHADING COILS D D D C3 C4 CURR POL THYRITt C3 VC4 CURR POL THYRITE r TX TOC 1 TX Os I Os P3 UJJJ mrr u I 0 D PCT 5oclisi TX rrrn POT P4 POL u POL o ct ar Q Sl si i X X...

Page 7: ...ER QO 9 Connections IBCG78E Relay View IBC677E Relay A C us 1 2 A C BJS 3 TO NBJTRAL OF P0 TRANSFORMER WASE RELAYS U Li Ur1 raca V1 CO RUSE RELAYS 1 CO o TO 10 XI Hi RUSE QO 9 L RELAYS 1 1 p LA 7 LAJ L o L52M ejToc 9 TRIP US u 32 W4 1 t 32 I SIMILAR CIRCUITS FORMER 1 0 IP 1 SPi SIMILAR CIRCUITS FOR OTHER TO RELAYS 1 1 i 2 3 2 1 J 52 2 ROTE RELAY OPERATES FOR FAULTS IN DIRECTION OF JRRCW 3 2 1 CO a...

Page 8: ...phase field which in turn develops torque on the operating disk The very inverse and extremely inverse time units are of the type similar to that used in meters except as follows the upper portion of the iron structure has two con centric windings on the middle leg of the magnetic circuit One of these is a tapped current winding connected to taps on the tap block the other is a floating winding wh...

Page 9: ...ary contact members have made contact stationary contact support and the contact are assembled together b means of a mounting screw L and the two locknuts M Ground Directional Overcurrent Relay Type GEH 2032 INSTALLATION The location should be clean and dry free from dust and excessive vibration and well lighted to inspection testing The relay should be mounted on a vertical surface The outline pa...

Page 10: ...he time will be the same for 80 on the ampere tap as for 50 amperes on the 5 ampere tap since in both cases the current is 10 times tap setting selective action of two or more relays is required determine the maximum possible short circuit current of the line and then choose a time value for each relay that differs sufficiently to in sure the proper sequence the operation of the several circuit br...

Page 11: ... is sometimes prac tical to introduce a single phase current in one phase of the primary circuits in such a way that current flows through both the transformer neutral current transformer and one of the line current transformers If this cannot be done a careful wiring check must suffice Fig 15 shows the test connections for checking the polarity of the directional unit itself MAINTENANCE It is rec...

Page 12: ... off This gives access to the cup as sembly and exposes the assembly should be protected to keep it free from dust metallic particles until the nit is reassembled To remove the shaft and rotor from the head assembly the spring clip at the top of the must be pulled out and the clutch adjusting out of the side of the molded contact The shaft and can now be pulled out of molding The rotor must be han...

Page 13: ... should be potential or current polarization not both The 50 ohm resistor should be replaced an adjustable resistor capable of providing the current range listed in Table V relay rating in question A screw projecting from the side of the moving con tact controls the clutch pressure and quently the current value at which the clutch will slip With rated frequency and at rated volts for polarization ...

Page 14: ... and I Type 10 10 V a N sNi V A V CO 10 1 X I i 9 V 8 V V UJ 7 7 I f 4 s QO 9 X UJ v X CO 3 V o X o V x r 2 o CN O s aQ 00 s QO oo N E o K N 1 0 o 07 2 u 00 09 M joa 02 11 01 1 9 4 S 9 9 r 9 0 9 MULTIPLES OF RELAY TAP SETTING IBCG53 BCG5H 17 Time Current Curves 15 Courtesy of NationalSwitchgear com ...

Page 15: ...erse Time GEH 2032 IBCG Directional 90 40 30 20 10 7 3 2 CO 1 o in o 5 UJ CO k UJ 5 W Ik w v 10 6 in o 5 1 JO Jl J7 3 a 00 2 09 O M Q I 03 a E 2 H 02 01 30 40 90 80 70 80 00g 20 3 4 5 8 7 8 0 10 9 0 7 8 9 1 MULTI PLES OF RELAY TAP SETTING I8 Overcurrent Unit Courtesy of NationalSwitchgear com ...

Page 16: ...sions for Type 17 MTG MTG p 5 ft I 6 8 5 Q 1 T rofcS gJ 10 ir 3 j 8 STUOS i FOR SURFACE MTG CSJ T ro 1 3 5 7 9 Qgoop OOOQO 2 4 6 8 10 FRONT 10 32 SCREW 0R STUO n Ai 10 32 4MTG 8 SCREW li II 2 27 2 27 CASE X_ in 7 UJ 32 32 32 32 J O i RANEL J l 4DRILL H 6 HOLES cc z O ft m co 4DRILL 4 10 HOLES 3 K 2J J 0 m r 0 i Ul o JC CLUJ CVJ Ul 1 ro cro X G 1 3 o 2 fls 5 b 1 o 5 UJ iSM HJ it JJJ z a O Q HARDWAR...

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