GE IAC57A, Instructions Manual

Page 1: ...4 16 1 5 6 0 5 2 200 70 The outline and panel drilling dimensions for these relays are shown in Figure 20 of GEH 1753 The internal connection diagram for IAC57A is Figure 11 and for IAC57B is Figure...

Page 2: ...6 h 2 i i i mill I I S I ll m m m m Tinag MULTIPLES OF RELAY TAP SETTING Figure 1 0888B0272 1 Typical Time Current Characteristic of Type IAC57 Relays ST6 93 300 GENERAL ELECTRIC METER AND CONTROL BUS...

Page 3: ...GEH 1753J INSTRUCTIONS TIME OVERCURRENT RELAYS TYPES IAC 52 A IAC52 B IAC51A IAC51B IAC51R GENERAL ELECTRIC Courtesy of NationalSwitchgear com...

Page 4: ...i f SHAFT MAIN STATIONARY BRUSH AND CONTACT ASSEMBLY i II SEAL IN UNIT STATIONARY CONTACT RIGHT m S E A L i N MOVING CONTACT ASSEMBLY rR c 11 i j i iL DISK e STHI CTIOMK s A M TAMIL 4 O JS UNIT DRAG...

Page 5: ...s actuated by a current operating coil on a laminated U magnet The disk shaft carries the moving contact which completes the alarm or trip circuit when it touches the station ary contact or contacts T...

Page 6: ...1 X x X x V p 2 N V 10 9 8 v 7 i a 6 a 5 v 7 a c X 4 8 X D 3 V 4 tn 2 V 3 O a 2 a E i I XI 08 07 08 09 04 03 02 01 3 8 7 8 9 1 3 4 8 8 7 8 9 10 20 30 40 SO 80 7080SOg MULTIPLES OF RELAY TAP SETTING 0...

Page 7: ...Amperes Volt Amps Imp Ohms 30 0 45 20 5 0 Freq Tap PF 0 37 2 3 1 2 2 6 0 2 2 0 0 6 2 0 4 16 60 4 0 amp ohms ohms ohms 0 05 0 5 0 15 8 8 0 5 0 35 0 29 8 3 0 24 0 78 0 18 50 4 0 0 32 8 0 0 31 50 0 65 6...

Page 8: ...75667 2 Type IAC51A Relays used for Phase to Phase and Ground Overcurrent Portection of a 3 Phase Circuit External Connections of Three TC A A C BUS 1 2 3 A C BUS 1 ZL 2 3 12 ss1 jn A C TRIPPING H1 l...

Page 9: ...o 40 and 20 to 80 amperes respectively The current closing rating of the contacts is 30 amperes for voltages not exceeding 250 volts BURDENS Burden data on the instantaneous unit coils are given in th...

Page 10: ...the flux generated by the main REA coil passes through the upper limb of the magnetic structure and holds the armature firmly against this limb When the contacts of the induction unit close the short...

Page 11: ...d or the adjustments disturbed These relays when not included as a part of a control panel will be shipped in cartons designed to protect them against damage Immediately upon receipt of the relay an e...

Page 12: ...T T T A T N T V V V y vY y V Y V V V V V I9 O 5 7 1 3 o o o 6 2 4 8 10 Fig 13 K 6209294 3 Internal Connections for the Type IAC51R Relay Front View INDUCTION INDUCTION A UNIT SI T T SI X SEAL IN UNIT...

Page 13: ...ean and dry free from dust and excessive vibration and well lighted to facilitate inspection and testing MOUNTING The relay should be mounted on a vertical surface The outline and panel diagrams are s...

Page 14: ...of the relay Screw the tap plug firmly into the tap marked for the desired current below which the unit is not to operate When changing the current setting of the unit remove the connecting plug to s...

Page 15: ...d by turning the screws in the contact brush which regulates the position of the brush in relation to the brush stop For relays with two circuit closing contacts the tips should be in the same vertica...

Page 16: ...ool described above can be obtained from the factory PERIODIC TESTING An operation test and inspection of the relay at least once every six months are recommended Test connections are shown in Fig 18...

Page 17: ...10 3 rO y VIEW SHOWING ASSEMBLY OF HARDWARE FOR SURFACE MTG ON STEEL PANELS OUTLINE 5 16227 4 2U 7 5 3 DRILL 2 HOLES l D R I L L 2 HOLES T DRILL 5 HOLES 5 32 3 32 32 32 j DRILL 10 HOLES 8 T DRILL 4 4...

Page 18: ...3RZHU 0DQDJHPHQW 215 Anderson Avenue Markham Ontario Canada L6E 1B3 Tel 905 294 6222 Fax 905 201 2098 www ge com indsys pm Courtesy of NationalSwitchgear com...