Controllers with Draw-out Air-break

1 IC7160. GEH-3091C. Instructions om Utilization Voltage- 2300, 4000 & 4600 Vac Distribution Voltage- 2400, 4160 & 4800 Vac Llmltamp ..c Controllers with Draw-out Air-break ls Contactor ua CAUTION: Before installing in a nuclear application, determine that the product is intended for such use. an tM. ar 1111111111111 IIIII. illlllllllllllil!111111 11111111111. lP. 0. I. Ill ca .. i 111111'111111111111!11111111\l!l\llll\ll llll\\lllllll I. - . tri . ;:4 111111111111111111111111111111111111111. !i11:11111r!lll!l111il!i'l'ill:llil1;111 1 '. lec r . Q.. 0. l 1..E. 1111111111moom mm 111111. 1111111111111111111111111111111111111111 1 . w ww GENERAL fJ E LE C TR I C. om CONTENTS. Page INTRODUC TION 3..c DE SCRIPTION .. 4. E quipment Identification - IC Number Des ignation . 4. General .. 4. Ratings .. 5. High-voltage C ontactors .. 5. ls . M anual Disconnect or Isolating Mec hanism .. 7. Mechanical Interloc king .. 7. Auxil iary Enclosures .. 8. ua . D imensions .. 8. Power Fuses.

2 8. Starting Autotransformers and Reactors . 8. INSTALLATION .. 9. an General .. 9. Rece iving .. 9. Handling .. 9. Placement of E nclosure .. 11. Disassembly - One -high Des igns .. 11. tM. D isassembly - Two-high Designs .. 14. Disassembly - Three-high Designs .. 17. Grounding .. 20. Incom ing Power C onnec tions .. 20. Motor C onnections .. 23. ar Pow er C able Termination .. 25. C ontrol C onnections .. 30. Reassembly - One -, Two- and Three-high Designs 31. Mechanical Operation Check .. 32. lP. Assembly of Outdoor Enclosures 33. OPERATION .. 33. General .. 33. ca Test-power C ircuit .. 33. Preparation of C ontroller for Operation .. 34. Normal Operation .. 34. Door Opening Proc edure .. 34. tri INSPECTION, MAINT E NANC E , AND SERVIC ING . 36. Drawout C ontactor .. 36. Isolating Mechanism and Mechanic al Interlock .. 36. Adjustment of E lectric al Interlocks 42. lec .. Power Stabs .. 43. Preventive M aintenance Guide 43. RENEWAL PA.:.:lT S 44. APPENDIX (Outline Drawings).

3 46..E. PUBLICATION REFERENCES. Renewal Parts for Contactor . GE F- 4 3 3 7. Instructions for Contactor .. GEH- 3 102. Synchronous Motor Control . GEH- 3133. Application Data .. GET- 3 140. w These instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation, operation or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently ww for the purchaser's purposes, the matter should be referred to the General Electric Company. 2. om IC7160 LIMITAMP Controllers . Before any adjus tments, servicing, parts re functions are provided in great variety as may be .c p lacement or any o ther act is p erformed re quiring required for particular applications. p hysical contact with the electrical working com . p onents or wiring of this e quipment, the POWER These instructions are prepared as a guide to SUPPLY MUS T BE DISCONNEC TED.

4 Handling, installation, operation, and maintenance of all types of Limitamp Controllers . This 'includes the 34-inch-wide one-high, 42-inch-wide one-high, INTRODUCTION and 44-inch-wide two- and three-high designs. Fig. ls 1 shows the 34-inch-wide one-high controller, Fig. 2. Limitamp Controllers are designed to comply shows the 44-inch-wide two-high controller, Fig. 3. with NEMA Part ICS2-324, "A-c General-Purpose shows the 44-inch-wide three-high controller, and ua High-Voltage Class E Controllers ", and may be de Fig. 4 shows the 42-inch-wide one-high controller. scribed as metal-enclosed high-interrupting ca . The intent of these instructions is to give the pacity, drawout, magnetic-contactor-type starter Purchaser the necessary general information to equipments with manual isolation. Individual identify his controller as to type and function, to starters and Controllers are designed for specific an describe suggested methods of installation, and to applications; the components and functions being demonstrate some techniques of operation and main.

5 Dictated by the Purchaser specifications and needs. tenance. Separate instructions covering components Controllers may be fused or unfused. are not included in this publication, but are avail . able upon request. The Purchaser should interpret tM. The essential control functions for all types of these instructions for applicability to his particular a-c motors consist of starting, stopping, and over controller by referring to the nameplate data on the load protection. Limitamp Controllers also include controller and to the electrical diagrams supplied short-circuit protection, but other functions are with the controller. provided in each controller as they are applicable ar to the type of motor being controlled (such as syn If the controller is for a synchronous motor, chronous and wound-rotor motors). Also, special these instructions should be used with G EH-3133. lP. ca :J. 0 j tri !..;.;. JJmlmWmUJWU l IIIIIIR..I.. ".. lec II lllllil!lllilllliilllilllliiil!lllllllll lilllllll 1111111111111111111111111111111111111111 .

6 R:: '. J..E. w Fig. 1. 34 -inch-wide Fig. 2. 44-inch-wide Fig. 3. 44-inch-wide Fig. 4. 42-inch-wide ww one -high con two -high con three -high one -high con . tro ller. tro ller. controller. troller. 3. om GEH-309 J C, IC7 J 60 Limitamp Controllers DESCRIPTION GENERAL. The basic Limitamp controller is a front-con ..c EQUIPMENT IDENTIFICATION-IC N UMBER nected assembly of compone nts and conductors for DESIGNATION motor starting, arranged for conve nient access, in Basic type designation for all Limitamp air an e nclosure which allows space and facilities for break equipment is IC 7 160, with significant alpha cable termination, plus safety interlocking of doors numeric suffixes used to define rating, funct ion, and and isolator to prevent inadvertent e ntra nce to high . model design vintage . voltage parts. No back access is required. This ls equipment is rated 5000 volts, and may be used on voltages between 2300 and 5000 volts. Installation, JC7160- Fused controller operation, and service should be performed o nly by ____.

7 T. ua JC7161 Unfused controller --')" experienced personnel trained in this class of L Model Vintage Starting and Speed Functions equipm ent. A - Single peed, full voltage c - 1955. B - Single-speed/reduced-volt- D- 1960. G - 1966 one-high In general, the unit e nclosures are divided into H - 1966 three-high age reactor high-voltage and low-voltage compartme nts, each J - 1972 42W one-high C- Single speed/reduced-volt . D- Single speed/part-winding K - 1973 44W two-high age auto-transformer w ith its own separate door and w ith interior barriers an L - Vacuum contactor between the two. See F ig . 5, 6 and 7. In order to E - Single-speed/reduced-volt . start System Voltage open the high-voltage compartment door, the power G- 2-speed !-winding/full age primary resistor must be disconnected by a sequence of manual oper . 8 - 4000 volts 7 - 2300 volts H - 2-speed !-winding/reactor voltage ations which requires de-energiz ing the high-voltage 9 - 4600 volts contactor, operating the isolat ing sw itch handle, and tM.

8 Reduced voltage -- 2-speed !-winding/auto unlatching the door. Low- voltage doors m ay be transformer reduced L---- Controlled Apparatus I - Induction motor voltage entered without disconnecting the power, but should N- 2-speed 2-winding/full 2 -- Synchronous motor be done with extreme care and caution. P - 2-speed 2-winding/reactor voltage 3 - Wound-rotor motor (ring type). 4 - Transformer primary The upper compartment of one-high Controllers ar reduced voltage Q 2-speed 2-winding/auto-trans- may contain a low-voltage panel, h inged on the left 0 - Synchronous motor feeder former reduced voltage side, which acts as a barrier to the high-voltage (brushless). Rotation and Braking -----' control power transformer mounted on the upper I - Non-reversing/non-braking rear cover. lP. 2- Reversing/ non-braking 5 - Reversing/dynamic braking 4- Non-reversing/dynamic braking 7 - Reversing/ plugging r - ca I! ..-_, u tri 111111111111111111111111111111111111111. lec I ..E. IIIIHII M&malllllll lllliiWIIII.

9 W Fig. 5. One-high design,show Fig. 6. Two-high design, show Fig. 7. Three-high design for ww ing separation of low ing high-vol tage com compartm ent s epara . and high- voltage com partment. tion. partments for a syn . 4 chronous-motor con . troller. om IC7J 60 limitamp Controllers , GEH-3091C. two- . and three-high enclosures, with minor parts differences. Refer to GE H- 3 102. Contactor s used .c in the two - or three-high enclosures contain a po si . tioning handle that is not on the one-high contactor . One- high contactors contain wheels and bottom stab s that are not on the two- or three- high contactors. C atalog number s of the parts involved ar e: ls Positioning Handle - Cat . No. 1 88A553 2 G3. Wheel and Stab Kit - Cat. No. 1 94 A43 78G1. To use a two- or three- high contactor in a one . ua high enclosur e, remove the positioning handle ( Fig. 1 1 ) and add wheels and bottom stabs. To use a one . high contactor in a two- or three-high enclosure . remove the wheels and bottom stabs and add the positioning handle ( Fig.)

10 1 2 ) . an Up to 3 60 amperes , contactor s with fuse clips will accommodate all the 2. 4 - kv and 4. 8 -kv EJ- 2. fu ses Size D o r D D . No change of fuse clips i s re . Fig. 8. Limitamp isola tor handle padlocking pro . quired for any of the D or DD fuses. To change visions. from a 2. 4 -kv fuse to a 4 . 8- kv fuse, the upper clip RATINGS. Refer to the panel data nameplate on front of the enclosure for detailed ratings applicable to a par . tM i s repositioned for the two different fuse lengths. (See GEH- 3 10 2 . ). Limitamp equipment rated higher than 360 am . peres and up to 630 amperes continuous , utilizes a ar ticular controller. Equipment basic ratings equal or exceed NEMA ICS #2- 324 , and are summari zed contactor having essentially the same basic design below: but with current-carrying parts of higher capacity . Tips are larger and operate under higher contact Horsepower, Current, and Voltage Ratings pressure. Stab s have special silver- inlaid surfaces lP.