GE IACS1A Instructions Manual Download | Manualshive

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Summary of Contents for IACS1A

Page 1: ...GEK 34053G TYPES IACS1A FORM 800 AND UP IACS1B FORM 800 AND UP IACS2A FORM 800 AND UP IAC52B FORM 800 AND UP INSTRUCTIONS TIME OVERCURRENT RELAYS GENERAL ELECTRIC...

Page 2: ...ANEOUS UNIT SETTING THE INSTANTANEOUS PICKUP TEST TARGET AND SEAL IN UNIT PICKUP AND DROPOUT TEST INSTALLATION TIME OVERCURRENT UNIT TARGET AND SEAL IN UNIT INSTANTANEOUS UNIT PERIODIC CHECKS AND ROUT...

Page 3: ...standard Si case is used to mount each relay The outline and mounting dimensions of this case are shown in Figure 12 The basic differences between the relays covered by these instructions are noted in...

Page 4: ...ully open position when set at number 10 on the time dial When setting these relays to coordinate with downstreamu relays a coordination time of from 0 25 to 0 40 second is generally allowed These coo...

Page 5: ...rrent unit When the instantaneous unit picks up it raises a target which latches up and remains exposed until it is released The same button that releases the target of the seal in unit also releases...

Page 6: ...16 RATING 8 0 9 0 10 0 12 0 14 0 15 0 16 0 17 5 20 0 20 0 20 0 INSTANTANEOUS UNIT The instantaneous unit has a double wound coil for operation on either one of two ranges Any setting obtained in the l...

Page 7: ...Parallel connected TARGET AND SEAL IN UNIT Ratings for the target and seal in unit are shown in Table VII TABLE VII TAP 0 2 2 0 D C Resistance 10 ohms 7 0 13 Mi Operating amperes 0 25 0 2 2 0 Carry Co...

Page 8: ...t 2 0 amperes is 5 2 2 x 22 1 37 ohm The instantaneous unit burdens are listed in Table IX TABLE IX BURDENS AT MIN BURDENS IN RANGE tCON MIN PICKUP MIN TAP OHMS 1 60 HZ NEC TAP RELAYS TIONS AMPS R Z 3...

Page 9: ...amine it for any damage sustained in transit If injury or damage resulting from rough handling is evident file a damage claim at once with the transportation company and promptly notify the nearest Ge...

Page 10: ...d 5 Make sure that the fingers and shorting bars agree with the internal connections diagram CAUTION Every circuit in the drawout case has an auxiliary brush It is especially important on current circ...

Page 11: ...pport With the contacts just closing at No 0 time dial setting there should be sufficient gap between the stationary contact brush and its metal backing strip to ensure approximately 1 32 wipe The min...

Page 12: ...p Using the test connection in Figure 13 apply five times tap current 10 0 amp to the relay The relay should operate in 1 78 seconds 0 09 second At 2 times tap current and 10 times tap current the ope...

Page 13: ...e screw from the left hand stationary contact and place it in the desired tap Next remove the screw from the first undesired tap and place it on the left hand stationary contact where the first screw...

Page 14: ...ime shown on the time current curve 7 TARGET AND SEAL IN UNIT 1 Make sure that the tap screw is in the desired tap 2 Perform pickup and dropout tests as outlined in the ACCEPTANCE TESTS section INSTAN...

Page 15: ...tap in service 2 Perform the Time Test as described in the ACCEPTANCE TESTS section INSTANTANEOUS UNIT 1 Check that the instantaneous unit picks up at the desired current level as outlined in the ACCE...

Page 16: ...uit that the contacts just close The point at which the contacts just close can be adjusted by running the stationary contact brush in or out by means of its adjusting screw This screw should be held...

Page 17: ...vel The magnet is adjusted by loosening the nut under the magnet shelf Moving the magnet in decreases the time Moving the magnet out increases the time When adjusting the drag magnet be sure the outer...

Page 18: ...inch feeler gage between the plastic residual of the armature and the pole piece with the armature held closed The contacts should close with the feeler gage in place RENEWAL PARTS It is recommended...

Page 19: ...tics of the Instantaneous Unit 26 9 Time Current Characteristics of 50Hz Types IAC51 and 1AC52 800 Series Relays 27 10 Time Current Characteristics of 60Hz Types IAC51 and 1AC52 800 Series Relay 28 11...

Page 20: ...UXILIARY BRUSH CONNECTING PLUG TRAVELS 1 4 INCH BEFORE ENGAGING THE MAiN BRUSH ON THE TERMINAL BLOCK Figure 1 8025039 Cutaway of Drawout Case Showing Position of Auxiliary Brush and Shorting Bar CONNE...

Page 21: ...UNIT STATIONA CONTACT RIGHT SEAL IN MOVING CONTACT ASSEMBLY SPRING ADJUSTING RING DISK V TAP BLOCK Figure 2 8041317 Type IACS1 800 Series Relay Removed from Case Front View IME DIAL DISK SHAFT r i EII...

Page 22: ...GEK 34053 INSTANTANEOUS UNIT RANGE SELECTING LEADS COIL MAGNET AND TAP BLOCK ASSEMBLY Figure 3 8041315 Type IACS1 800 Series Relay Removed from Case Rear View CRADLE 22...

Page 23: ...SEAL I N U N T 2 GEK 34053 Figure 4 6209658 10 Type IAC51A 800 Series Relay Internal Connections Front View ON UN IT 0 V 1 5 6 INTERNAL CONNECTIONS LFRONT VEd ZSHORT flNGER 23...

Page 24: ...EAL IN NOTE INST UNIT CONNS SHOWN ARE FOR LOW RANGE OPERATION FOR HIGH RANGE OPERATION CONNECT 8 D TO TERMINAL 6 TO TERMINAL t 4 3T IN5TAfTANEOUS UNIT Figure 5 0227A7196 l Type IAC51B 800 Series Relay...

Page 25: ...UNIT I NSTANThNEOUS UNIT a SHORT FINGER TCSI TARGET SEAL IN NOTE INSTAN UNIT CONNECTIONS SHOWN ARE FOR LOW RANGE OPERATION FOR HIGH RANGE OPERATION CONNECT 8 TO TERMINAL 6 A C TO TERMINAL 44 Figure 7...

Page 26: ...I GEK 34053 Fl SEIiIC RATED INSTANTANEOUS UNIT Figure 8 0208A8695 1 Pime Current Characteristics of the Instantaneous Unit 26 3LT P ESOF PICKUP...

Page 27: ...D I r cy II I rt 0 N C n H o 0 r m o 1 m H H I w C U liME IN SECO S lL_ 2 2 2 TIME IN SECONDS...

Page 28: ...888B0269 3 Time Current Characteristics Types IAC51 and 1AC52 800 Series Relay of 60Hz 5 I7 9Il 7000 Ito 940 700 900 000 440 641444411 IIHL 11441 0 5 14 0 700 4 5 470 2 46 10 I H l0 C 0 160 70 001 IJ5...

Page 29: ...Curves of Lowest Taps of the Induction Unit of Type IAC Relays with Inverse Time Characteristics V 0 L T A G E 48 45 42 39 36 33 3Q 27 24 21 18 15 12 9 6 3 0 7 _______ w ____ ______ j_____ 25 TAP RANG...

Page 30: ...eries Relays 30 III N I F I hUH PANEL j YUR 1 ACE USC IF IiT005 FOR SYRI ACE 1 41G t rf IC 32 V H lI T G j SLREW SHiP NUMBER INC PVIINT VIEW IG H B a 5 7 9 00000 00000 2 4 P 8 0 I 441Ff aHIll jy Al TV...

Page 31: ...INSTANTANEOUS UNIT 60 1 2 3 4 5 0 0 0 0 6 7 B 9 10 XLA13 TEST PLUG A VARIABLF RESISTOR V TO TIMER START TO ACCURATELY REPRODUCE RELAY CHARACTERISTICS ALL TESTS SHOULD BE MADE WITH RELAY IN CASE M N EU...

Page 32: ...0246A6966 1 External Connections of Four IAC51A Relays Used for Multi Phase and Phase to Ground Fault Protection of a 3 Phase Circuit GEK 34053 A C BUS D C TRIP BUS 51 3 SI 51 3 21 SI I SW 51 2 1 52 A...

Page 33: ...GEK 34053 Figure 15 0246A6967 O External Connections of Four IAC52A Relays Protecting a 3 Phase Circuit Against Multi Phase and Phase to Ground Faults D C TRIP BUS 52 B A 528 TC 33...

Page 34: ...GE Power Management 215 Anderson Avenue Markham Ontario Canada L6E 1B3 Tel 905 294 6222 Fax 905 201 2098 www gecomIi ndsyslpm...

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