Related Manuals for GE IAC51V
Summary of Contents for GE IAC51V
- Page 1 INSTRUCTIONS GEK-65514 Supplement to GEH-1753 TIME OVERCURRENT RElAY TYPE IAC51V GENERAL ELECTRIC...
- Page 3 These relays provide for a target seal-in unit for both the time overcurrent element and the instan taneous overcurrent unit. The Type IAC51V relay is similar to the Type IAC5IA relay with the addition of a right hand target and seal-in unit, and a high-dropout instantaneous unit mounted in the rear of the relay unit.
- Page 4 GEK-65514 Should be necessary to change the dropout setting, the sleeve (C) to which the 'naximum setting. be t u rned sh.:�ding ring is attached must always the clockwise direction (top view). This will ;Jr·e vent the sleeve and shading ring assembly from being loosened. L<nit applied will pick up at the scale-plate marking plus or minus five percent with gradudlly...
- Page 5 :�F�-6�1514 ADJUSTABLE CORE (A)-----# � �"'! LOCKNUT(B) SLEEVE (C) SHA.DING Rlt�G( i.i•' ,[ Fig. 2 (8036365) Construction of the High-dropout...
- Page 6 GEK-65514 0.030 OPERATING TIME RANGE FOR �y PICKUP SETT I NG 0.�25 0. (t20 0.015 :..: :: 0 .010 0.005 MULTIPLES OF PICK-UP rig. Versus Current for the Standard Instantaneous Unit U-6306872-5) Operating Time...
- Page 7 ; f :- � f'E!AY · ;;tANSJEJ:r CVi'J-.RU•;ti m.c t�::i · :� rffi·;;: f: f �: r:· · :-,--: - - 1 r · :�� r :� -r:·: :··: �-: �� �:;:·:: � :� - - � r: · · r- r: : �...
- Page 8 GE Power Management 215 Anderson Avenue Markham, Ontario Canada L6E 1 83 Tel: (905) 294-6222 Fax: (905) 201-2098 www.ge.com/indsys/pm...
- Page 9 INSTRUCTIONS GEH-1753J TIME-OVERCURRENT RELAYS TYPES IAC51A IAC52A IAC51B IAC52B IAC51R GENERAL ELECTRIC...
- Page 10 C ent Rel ay s Typ GE H Ti m e ov erc urr -1 75 3 TOP PIV OT ---- -- -- -- TAP PL UG SEA L- IN UN IT HOLDI NG COI L SEA L-IN...
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Page 11: Time-Overcurrent
TIME-OVERCURRENT RELAYS TYPE lAC INTRODUCTION Outline & Contact Instantaneous AC Trip Induction Internal Type Unit Circuits Unit Unit Panel Drilling Connection Fig. Fig. IAC51A(-)A Fig. Fig. IAC51B(-) A Fig. Fig. IAC51R(-) A Fig. Fig. 18 IAC52A(-) A Fig. Fig. IAC52B(-) A The Type lAC relays comprise a group of relays permits instantaneous tripping for extremely high that are employed to protect against overcurrent on... - Page 12 GEH-1753 OVercurrent Relays Type Time • • • � � � � •• •• "' •• ·- G> ·- ·- ..••• . 07 I 1 I I 10 50 10 70 80 110 .O .I .I .7 .I .1 1 MULT\PLES OF RELAY TAP SETTlNG...
- Page 13 Time Overcurrent Relays GEH-1753 The current-closing rating of the contacts is BURDENS amperes for voltages not exceeding volts. The current-carrying ratings are affected by the Burdens for the standard coils are given in the selection of the tap on the target and seal-in coil following table.
- Page 14 . . . r : GEH-1753 Time Overcurrent Relays Type lAC A-C BUS DEVICE FUNCTION NUMBERS FOR USE WITH ALL EXTERNAL DIAGRAMS ll=1 Instantaneous Unit Overcurrent, Relay, Type lAC 51N - Ground Overcurrent Relay, Type lAC Power Circuit Breaker Seal-in Unit, with Target Fig.
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Page 15: Instantaneous Unit
Time Overcurrent Relays Type IAC GEH- 1753 INSTANTANEOUS UNIT INTRODUCTION mounted beside the adjustable pole piece. Time current characteristics shown Fig. The instantaneous unit is a small instantaneous hinge-type unit which may be mounted on the right RATINGS front side of the induction unit (See Fig. 7). contacts are normally connected in parallel with... - Page 16 Time Relays Type GEH-1753 Overcurrent A·C TRIPPING UN11 INTRODUCTION The a-c tripping unit is a Type relay unit COIL designed to energize a circuit breaker trip coil from T&SI BREAKER TRIP its associated current transformer upon the operation of the main unit of the lAC relay. It transfers the current from the secondary of the current trans...
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Page 17: Receiving, Handling And Storage
Time Overcurrent Relays Type IAC GEH-1753 APPLICATION which has contacts rated amperes, can be used in conjunction with lAC overcurrent relays. The a-c tripping unit is used in Type lAC relays REAUB is not mounted inside the lAC case. where a reliable direct-current tripping source is not available and it is necessary to trip the breaker BURDENS from the current-transformer secondary. -
Page 19: Installation
Time Overcurrent Relays Type lAC GEH-1753 TIMER "STOP" TO INDICATING LIGHT WHEN CHECKING PICKUP OF MAIN UNIT TO INDICATING LIGHT WHEt UNIT __.. INSTANT, CHECKING PICKUP OF INSTANTANEOUS UN IT INDUCTION X LA13 TEST PLUG I NSTANT, VARIABLE RESISTOR TO TIMER "START"... -
Page 20: Target And Seal-In Unit
G EH-1753 Time Overcurrent Relays Type lAC ADJUSTMENTS TARGET AND SEAL-IN UNIT The primary adjustment for the time of opera tion of the unit is made means of the time dial. However, further adjustment is obtained by moving For trip coils operating on currents ranging the permanent magnet along its supporting... -
Page 21: Maintenance
Time Overcurrent Relays Type IAC GEH - 1 753 CONTACT AWUSTMENT 1. CONTACT ADJUSTMENT With the unit de - energized, the movable contact The contacts should have approximately 1/32 should lie against the stationary contact with enough inch wipe. That is the stationary contact should be tension to always insure a good closed circuit. - Page 23 Time Overcurrent Relays Type lAC GEH- 1753 S E W I - F lUSH-- PA N E l LOCH I ON - SURFACE IITG . MTG . - - - - - STUD N U I NG S T U D N U II B E R CAS£...
- Page 24 GE Power Management 215 Anderson Avenue Markham, Ontario Canada L6E 1 83 Tel: (905) 294-6222 Fax: (905) 201-2098 www.ge.com/indsys/pm...