GE IAC66M Instructions Manual
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GE IAC66M Instructions Manual

GE IAC66M Instructions Manual

Time over current relay
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  • Page 2: Table Of Contents

    GEK-86105 CONTENTS PAGE DESCRIPTION APPliCATION RATINGS ..........INDUCTION UNIT •...

  • Page 3: Description

    Figures the location of these units, and Figure 3 for outline and panel drilling dimensions. APPLICATION The IAC66M relay was designed for motor overload and fault current protection. induction overcurrent unit provides...
  • Page 4 G EK-86105 TABLE RATINGS INDUCTION UNIT CO I L P ICKUP CONTINUOUS SHORT TIME VALUES CURRENT (ON E S ECON D) : RANGE RAT ING 0.6/1.8 0.6, 0.8' 1.0' 1.2' 1.4' 1.6 1. 5/4.5 1.5' 2, 2. 5' 3, 3.5 , 4 , 4. 5 2.5/7.5 2.5, 3, 3.5, 5, 6, 7.5...

  • Page 5: Standard Instantaneous Unit

    GEK-86105 STANDARD INSTANTANEOUS UNIT The standard instantaneous unit is designed to use one of several coil s. Tabl e IVa l ists the pickup range, continuous current ratings and short time rating of each of these coil s. The current-closing rating of the contacts is amperes for vol tages not exceed ing vol ts.

  • Page 6: Characteristics And Burdens

    GEK-86105 TABLE V RATINGS OF HIGH DROPOUT INSTANTANEOUS UNIT PICKUP RANGE CONTINUOUS ONE SECOND RATING (AMPS) RATING (AMPS) - 16 - 28 10.5 - 40 - 8 0 CHARACTERISTICS AND BURDENS INDUCTION UNIT The induction unit consists of a conducting disk that passes through the poles of a permanent magnet and an electromagnet.

  • Page 7: Telephone Relay 4

    GEK-86105 TABLE BURDENS OF INDUCTION UNIT COILS - -�r���p-- -;��� � ------��f������� A �;b�v� ����s ------; O WE R I _____ (AMPS) (Hz) TA? MINIMUM PICKUP ( I2Z) WATTS FACTOR! 1. 0 - 3. 0 118. 4 15. 2 0. 13 98.
  • Page 8 GEK-86105 the button in the target is displayed when unit operates. Pressing lower left corner of the relay cover resets the be adjusted continuousl y over four-to-one range by using the The pickup range When the top o f the core is 1 ined up with the calibration adjustabl e pol e piece.

  • Page 9: Construct Ion

    0.007 0.007 0.01 0.25 20 - 80 CONSTRUCTION The IAC66M mounted in an Ml case that does not an upper contact block. r elay is h ave The case for either semi-flush or surface mounting on panels up to two...

  • Page 10: Acceptance Tests

    The unit has two taps which can be s elected as d esired. See page 6. Internal connections for the IA C66M are shown in Figure 9A . For IAC66M forms up, Figure 98 depicts the internal connections. RECEIVING, HANDLING AND STORAG E...

  • Page 11: Induction Unit

    GEK-86105 auxiliary brush in each position on case block. This brush should formed high enough so that when the connection plug is inserted, it engages the auxiliary brush before striking the main brush. improper adjustment of the auxiliary brush could result secondary being...
  • Page 12 GEK-86105 12XLA12A tes t plug may also be used. Although this tes t plug allows greater tes ting flexibility, also requires shorting jumpers greater care tes ting, s ince connections are made to both the relay and the external circuitry. Induc tion Unit Wi th plug...

  • Page 13: Installation

    GEk-86105 TABLE X Cu rre nt Current Connection 0. 2 2. 0 Induction & 0.12-. 195 Standard 1.2-1. 95 0. 06+ I ns tanta eous Close Induction Unit Contact Circuit Hi-0. 0. Inst. Studs 8-10 1.2-1. & ox 0. 12-.195 0.

  • Page 14: Periodic Checks And Routine Maintenance

    GEK-86105 PERIODIC CHECKS AND ROUTINE MAINTENAN C E Protective rel ays pl ay a vital rol e in the operation of a power s ystem, and it is important to foll ow a per iodic test prog ram. The interval between periodic checks wil l vary depending upon envi ronment, type of r elay and the user's experience with periodic testing.
  • Page 16 (6 HOLES) SURFA.CE VIEW D RLUN6 FOR MT(i ON STEEL PANELS 133M M SEMI MOUNTING SURFACE WARE ,� (FRONT PAN EL PANEL DRILLING FLUSH MOUNTING VIEW) (FRONT lEW) Figure 3 (6209273-3) Outl ine and Panel Drilling Dimensions for the IAC66M Relay...
  • Page 18 • 2 . � ·' " • • ! !!!!II I 1 I 111 10 70 10 .. .I I 1 I I I � MULTIPLES OF RELAY TAP SETTING Figure 6 (0888B0273-0) Time Current Characteristics of IAC66M Rel ay...
  • Page 20 '� .. 11:-- :�'iJ
  • Page 21 TRANSIENT OVERR EA CH HNC RELAY ..s::: : .... �
  • Page 22 (UPPER) !NST. DROP OU T (WHEN Wf1JERJ; USED) 250 V D.C. �/ "*" �* � \1!1'- � � � "*- TELEftlCNE s-ffi T FINGER AU<. RELAY Figure 11 (0104A8596-2) Internal Connections Diagram for the Timer Unit, IAC66M Relay, Forms 1-50...
  • 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...

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