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GEH-1768 

DISK  AND  BEARINGS 

The  lower  jewel  may  be  tested  for  cracks  by  exploring  its  surface  with  the 

point  of  a  fine  needle. 

The  jewel  should  be  turned  up  until  the  disk  is  centered 

in  the  air  gap,  after  which  it  should  be  locked  in  position  by  the  set  screw 

provided  for  this  purpose. 

CONTACT  CLEANING 

A  flexible  burnishing  tool  should  be  used  to  clean  fine  silver  contacts. 

This 

is  a  flexible  strip  of  metal  with  an  etch-roughened  surface,  resembling  in  effect  a 
superfine  file. 

The  polishing  action  is  so  delicate  that  no  scratches  are  left, 

yet  corroded  material  will  be  removed  rapidly  and  thoroughly. 

The  flexibility  of 

the  tool  ensures  cleaning  the  actual  points  of  contact. 

Fine  silver  contacts  should  not  be  cleaned  with  knives,  files,  or  abrasive 

paper  or  cloth. 

Knives  or  files  may  leave  scratches,  which  increase  arcing  and 

deterioration  of  the  contacts. 

Abrasive  paper  or  cloth  may  leave  minute  particles 

of  insulating  abrasive  material  between  the  contacts,  preventing  them  from  closing 
completely. 

The  burnishing  tool  described  above  can  be  obtained  from  the  factory. 

REREWAL  PARTS 

Sufficient  quantities  of  renewal  parts  should  be  carried  in  stock  to  enable 

the  prompt  replacement  of  any  that  are  worn,  broken,  or  damaged. 

When  ordering  renewal  parts,  address  the  nearest  Sales  Office  of  the  General 

Electric  Company,  specify  the  quantity  required,  and  describe  the  parts  by  catalog 

number,  as  shown  in  Renewal  Parts  Bulletin  No.  GEF-3897. 

Since  the  last  edition,  Figure 

12 

has  been  changed. 

9 

www 

. ElectricalPartManuals 

. com 

Summary of Contents for IAV54E

Page 1: ...LTAGE RELAYS TYPES IAVSSC IAV54E IAVSSF IAV54F IAVSSH IAV54 AV55J GEH 1768G INSTRUCTIONS d control GE Protection an arkway 205 Great Val 5 1337 Malvern PA w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 2: ...RESET BUTTON COVER GEH 1768 SEAL IN UNIT OUTER BLOCKS CASE CONNECTING PLUGS Figure 1 8007477 Type IAV54E Relay Dis assembled 2 Cover 8007476 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 3: ...s for the external connections while the inner blocks carry the terminals for the internal connections The operating coil is connected in parallel with both the upper and the lower inner molded blocks and the trip circuit is connected in series with these blocks In this way insertion of either the upper or lower connecting plug will energize the operating coil but the trip circuit will not be comp...

Page 4: ...ts at 60 SO or 25 cycles The operating coil will stand rated voltage continuously on any tap and will s tand tap voltage continuously on the taps above rated voltage The current closing rating of the contacts is 30 amperes for voltages not exceeding 250 volts The current carrying ratings are affected by the selection of the tap on the seal in coil as indicated in the Table 1 Function Tripping Duty...

Page 5: ...AVSSF 82 164 328 60 8 9 0 28 2 5 are approxi 70 140 280 60 12 4 0 29 3 6 mately 60 of 64 128 256 60 15 1 0 30 4 5 these values 55 110 220 60 21 6 0 31 6 7 Burdens for 140 280 560 50 2 5 0 28 0 70 IAVS4B IAVSSH 120 240 480 50 3 3 0 28 0 92 IAV55J are approxi 105 210 420 50 4 3 0 28 1 2 mately 40 of 93 186 372 50 5 7 0 28 1 6 these values 82 164 328 50 7 4 0 28 2 1 70 140 280 so 10 3 0 29 3 0 64 128...

Page 6: ... blocks have terminals for internal connections The relay mechanism is mounted in a steel framework called the cradle It s a complete unit with all leads terminated at the inner block This cradle s held firmly in the case by a latch at the top and the bottom and a guide pin at the back of the cas e The case and cradle are so constructed that the relay cannot be inserted upside down in the case Bes...

Page 7: ...ay be changed by the position of the tap plug in the tap block at the top of the relay The range of this adjustment is from 55 to 140 volts on the 115 volt ratings from 110 to 280 volts on the 230 volt rating and from 220 to 560 on the 460 volt ratings Screw the tap plug firmly into the tap marked for the desired voltage i e above which the relay is not to operate The tap settings indicate voltage...

Page 8: ...arnished contacts loose screws or other imperfections Corrections to the relay should be made in the manner described in the section on maintenance OPERATION Before putting the relay into service a check should be made to determine that factory adjustments have not been dis turbed On relays that have time dials the dials will be s et at zero before the relay leaves the factory This setting s hould...

Page 9: ...ontact Fine silver contacts should not be cleaned with knives files or abrasive paper or cloth Knives or files may leave scratches which increase arcing and deterioration of the contacts Abrasive paper or cloth may leave minute particles of insulating abrasive material between the contacts preventing them from closing completely The burnishing tool described above can be obtained from the factory ...

Page 10: ...GEH 1768 Figure 2 0362A0648 2 Time Voltage Curves for Type IAV54E and IAVSSC Relays 10 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 11: ...0 l l l K 1 I lo 90 80 GEH 1768 r to r t r 70 60 ERCliiT OF CLOSING VOLTS iO 20 10 TillE DIAL SETTING 0 l O 9 8 7 6 3 2 1 2 Figure 3 0362A0668 Time Voltage Curves for Type IAV54F and IAVSSF Relays 11 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 12: ...I _ t r r r 80 f r r t _p 60 1 _ _ _ r _ 40 _ 20 100 90 80 70 60 50 40 30 20 PERCENT OF CLOSING VOLTS f 10 DIAL d NGS 8 7 6 5 4 3 2 1 1 o2 Figure 4 0362A0650 l Time Voltage Curves For Type IAV54H IAV55H and IAV55J Relays 12 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 13: ...NG COIL SHORT FINGER Figure 6 6400515 3 Internal Connections for Type IAV55C IAV55F IAV55H Relays Front View 13 A C BUS l TR 1 P ii B U S _ _ H DEVICE FUNCTION NUMBERS 27 A C UNOERVOLTAGE RELAY TYPE IAV54E 52 POWER CIRCUIT BREAKER a AUXILIARY CONTACT CLOSED WHEN CIRCUIT BREAKER CLOSES 51 SEAL IN UNIT TC TRI P COIL 2 c _f_ 52 Figure 8 6209277 2 Typical External Connections using an IAV54E Relay for...

Page 14: ...l 0 1 1 j ro Cll t I Q d ro Cll H JI j Ill I 0 H JI JI 0 ro 1 Ill Cll 16 6 A C SUPPLY OF CORRECT FREQ POTENTIOMETER 52 15 5 MF 2 TIMER 11 DEVICE FUNCTION NUMBERS 27 A C UNDERVOLTAGE RELAY TYPE IAV Sf SEAL IN UNIT 0 w E l e c t r i c a l P a r t M a n u a l s c ...

Page 15: ...OVING CONTACT AND _ _ CARRIER CONTROL SPRING AND ADJUSTING RING ASSEMBL MAIN STATIONARY CONTACT AND BRUSH ASSEMBLY CRAG MAGNET Figure 10 8007475 Type IAV54E Relay Removed from Case Front View COIL MAGNET AND TAP BLOCK ASSEMBLY SHAFT _DISK Figure 11 8007478 Type IAV54E Relay Removed from Case Rear View 15 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 16: ...00000 00000 10 8 6 4 2 6 187 1 M l 3 0 I 157MM 176MM BACK VIEW CUTOUTS MAY REPLACE DRILLED HOLES 5 000 127MM _L 10 000 M 254M _1 L 218 I 5MM I I PANEL_ J I 718 18MM 5 25 1 75 L46MM 4 875 123MM t PANEL DRILLING 133MM 3 4 DRILL 20 HOLES 19MM PANEL DRILLING FOR SEMI FLUSH MOUNTING FRONT VIEW CA TYPICAL DIM INCHES MM FOR SURFACE MOUNTING FRONT VIEW Figure 12 K 6209272 7 Outline and Panel Drilling Dime...

Page 17: ...LTAGE RELAYS TYPES IAV54E IAV55C IAV55F IAV54F IAV55H IAV54 AV55J GEH 1768F INSTRUCTIONS d Control GE Protection an Parkway 205 Great Va 55 1337 Malvern PA w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 18: ...RESET BUTTON COVER GEH 1768 OUTER BLOCKS CASE L CONNECTING PLUGS l Figure 1 8007477 Type IAV54E Relay Disassembled 2 Cover 8007476 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 19: ...or the external connections while the inner blocks carry the terminals for the internal connections The operating coil is connected in parallel with both the upper and the lower inner molded blocks and the trip circuit is connected in series with these blocks In this way insertion of either the upper or lower connecting plug will energize the operating coil but the trip circuit will not be complet...

Page 20: ...t 60 50 or 25 cycles The operating coil will stand rated voltage continuous ly on any tap and will s tand tap voltage continuous ly on the taps above rated voltage The current closing rating of the contacts 1 s 30 amperes for voltages not exceeding 250 volts The current carrying ratings are affected by the selection of the tap on the seal in coil as indicated in the Table 1 Function Tripping Duty ...

Page 21: ...VSSF 82 164 328 60 8 9 0 28 2 5 are approxi 70 140 280 60 12 4 0 29 3 6 mately 60 of 64 128 256 60 15 1 0 30 4 5 these values 55 110 220 60 21 6 0 31 6 7 Burdens for 140 280 560 so 2 5 0 28 0 70 IAV54H IAVSSH 120 240 480 so 3 3 0 28 0 92 IAVS4J are approxi 105 210 420 so 4 3 0 28 1 2 mately 40 of 93 186 372 so 5 7 0 28 1 6 these values 82 164 328 so 7 4 0 28 2 1 70 140 280 so 10 3 0 29 3 0 64 128 ...

Page 22: ...r blocks have terminals for internal connections The relay mechanism is mounted in a steel framework called the cradle It s a complete unit with all leads terminated at the inner block This cradle s held firmly in the case by a latch at the top and the bottom and a guide pin at the back of the case The case and cradle are s o constructed that the relay cannot be inserted upside down in the case Be...

Page 23: ... may be changed by the position of the tap plug in the tap block at the top of the relay The range of this adjustment is from 55 to 140 volts on the 115 volt ratings from 110 to 280 volts on the 230 volt rating and from 220 to 560 on the 460 volt ratings Screw the tap plug firmly into the tap marked for the desired voltage i e above which the relay is not to operate The tap settings indicate volta...

Page 24: ...s hed contacts loose screws or other imperfections Corrections to the relay should be made in the manner described in the section on maintenance OPERATION Before putting the relay into s ervice a check should be made to determine that factory adjustments have not been dis turbed On relays that have time dials the dials will be s et at zero before the relay leaves the factory This s etting s hould ...

Page 25: ...ontact Fine silver contacts should not be cleaned with knives files or abrasive paper or cloth Knives or files may leave scratches which increase arcing and deterioration of the contacts Abrasive paper or cloth may leave minute particles of insulating abrasive material between the contacts preventing them from closing completely The burnishing tool described above can be obtained from the factory ...

Page 26: ... GEH 1768 L IN 1 r H ft J_j io t r 1 I t t I H t f 1 1 lA Figure 2 0362A0648 2 Time Voltage Curves for Type IAV54E and IAVSSC Relays 10 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 27: ...0 100 l l l 1 V l 1 90 80 70 GEH 1768 F i ooo r 60 50 0 20 10 TillE SETTI DIAL NG 10 9 8 7 6 5 3 2 1 1 2 0 Figure 3 0362A0668 Time Voltage Curves for Type IAV54F and IAVSSF Relays 11 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 28: ... 1 1 r I r r f r t r r _ 80 I r _ oo _ _ _ _ _ _ _ 60 r r 40 r 20 100 90 80 70 60 50 40 30 20 PERCENT OF CLOSING VOLTS SF 10 DIAL d NGS 8 7 6 5 4 3 2 1 1 o2 Figure 4 0362A0650 1 Time Voltage Curves For Type IAV54H IAV55H and IAV55J Relays 12 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 29: ...HORT FINGER Figure 6 6400515 3 Internal Connections for Type IAV55C IAV55F IAV55H Relays Front View 13 A C BUS 1 T RI P 1 8 U S _ _ DEVICE FUNCTION NUMBERS 27 A C UNDERVOLTAGE RELAY TYPE IAV54E 52 POWER CIRCUIT BREAKER a AUXILIARY CONTACT CLOSEC WHEN CIRCUIT BREAKER CLOSES 51 SEAL IN UNIT TC TRIP COIL 2c _1_52 Figure 8 6209277 2 Typical External Connections using an IAV54E Relay for Undervoltage P...

Page 30: ...I t z w t o a GEH 1768 0 w _ N I u e w a 0 LLJ CD E U 0 z LLJ z 0 _ u 0 z z 0 LL w 0 z L4J z u l I u 1 la J c f N Figure 9 6154392 5 Connections for Testing Types IAV54 and IAVSS Relays 14 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 31: ...OVING CONTACT ANO CARRiER CON TROL SPRING AND ADJUSTING RING ASSEMBLY _ MAIN STATIONARY CONTAC f AND BRUSH ASSEMBLY DRAG MAGNET Figure 10 8007475 Type IAV54E Relay Removed from Case Front View COil MAGNET AND TAP BLOCK ASSEMBLY SHAFT _DISK Figure 11 8007478 Type IAV54E Relay Removed from Case Rear View 15 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 32: ...M L 218 I 5MM I I PANEL_ J I 718 18MM 5 25 133MM 314 DRILL 20 HOLES 19MM 9 7 5 3 1 00000 00000 10 8 6 4 2 BACK VIEW CUTOUTS MAY REPLACE DRILLED HOLES 1 75 L 46MM 4 875 123MM t PANEL DRILLING FOR SEMI FLUSH MOUNTING FOR SURFACE MOUNTING FRONT VIEW FRONT VIEW CA TYPICAL DIM INCHES MM Figure 12 K 6209272 7 Outline and Panel Drilling Dimensions for Type IAV54 and IAVSS Relays 9 93 1M GE PROTECTION CON...

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