. ElectricalPartManuals

1 GEH-3091C. INSTRUCTIONS. om ic7160 LIMITAMP CONTROLLERS. WITH DRAW-OUT AIR-BREAK CONTACTOR. 2300, 4000 and 4600 Volt A-c (Utilization Voltage)..c 2400, 4160 and 4800 Volt A-c ( Distribution Voltage). ls ua an I. I. l II l:l l l l l il !l\l ll'll lil l l ll l llllllllllll 11. 1-----1. tM. ar lP. ca l l l l l l l l l l l l l l l l l l l l tri 11 1 1 1 1 1 1 1 1 1 1 1 1 1 1! lec .E. w ww t'. :I. I. GENERAL fj ELECTRIC. om CONTENTS. Page INTRODUCTION 3..c DE SCRIPTION .. 4. Equipment Identification - IC Number Designation . 4. General .. 4. Ratings .. 5. High-voltage Contactors .. 5. ls Manual Disconnect or Isolating Mechanism 7. Mechanical Interlocking 7. Auxiliary Enclosures .. 8. D imensions 8. ua .. Power Fuses .. 8. Starting Autotransformers and Reactors 8. INSTALLATION .. 9. General . 9. an Receiving.

2 9. Handling .. 9. Placement of Enclosure 11. Disassembly - One-high Designs 11. D isassembly - Two-high Designs 14. Disassembly - Three- high Des igns Grounding .. Incoming Power Connections .. Motor Connections Power Cable Termination .. tM 17. 20. 20. 23. 25. ar . Control Connections .. 30. Reassembly - One-, Two- and Three- high Designs 31. Mechanical Operation Check .. 32. Assembly of Outdoor Enclosures 33. lP. OPERATION .. 33. General .. 33. Test-power Circuit . 33. ca .. Preparation of Controller for Operation 34. Normal Operation .. 34. Door Opening Procedure .. 34. INSPE CTION, MAINTENANCE, AND SERVICING . 36. tri Drawout Contactor .. 36. Isolating Mechanism and Mechanical Interlock .. 36. Adjustment of Electrical Interlocks .. 42. lec Power Stabs .. 43. Preventive M aintenance Guide 43.

3 RENEWAL PARTS .. 44. APPENDIX (Outline Drawings) .. 46. PUBLICATION REFERENCES..E. Renewal Parts for Contactor . GE F-4337. Instructions for Contactor .. GEH-3102. 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 adjustmen ts, servicing, parts re functions are provided in great variety as may be placement or any other act is performed requiring required for particular applications.

4 C Physical contact with the electrical working com . ponents or wiring of this equipment, the POWER These instructions are prepared as a guide to SUPPL Y MUST BE DISCONNEC TED. 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 design's. F ig . ls 1 shows the 34-inch-wide one-high controller, F ig . 2. Limitamp controllers are designed to comply shows the 44-inch-wide two-high controller, F ig . 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 F ig . 4 shows the 42- inch-wide one- high controller . scribed as metal-enclosed high-interrupting ca.

5 Pacity, drawout, magnetic-contactor-type starter The intent of these instructions is to give the Purchaser the necessary general information to equipments with manual isolation. Individual starters and controllers are designed for specific identify his controller as to type and function, to describe suggested methods of installation, and to an applications; the components and functions being dictated by the Purchaser specifications and needs. demonstrate some techniques of operation and main . Controllers may be fused or unfused. tenance. Separate instructions covering components are not included in this publication, but are avail . able upon request. The Purchaser should interpret The essential control functions for all types of these instructions for applicability to his particular tM. a-c motors consist of starting, stopping, and over.

6 Load protection. Limitamp controllers also include short-circuit protection, but other functions are provided in each controller as they are applicable to the type of motor being controlled (such as syn . controller by referring to the nameplate data on the controller and to the electrical diagrams supplied with the controller. If the controller is for a synchronous motor, ar chronous and wound-rotor motors). Also, special these instructions should be used with GEH- 3 133. lP. ca j tri 1 Willi -- ! lec m:l l l l l l l l l l l l l il l l l l l l l l l l .E. w Fig. 1. 34-inch-wide Fig. 2. 44-inch-wide Fig. 3. 44-inch-wide Fig. 4. 42-inch-wide one-high con two-high con three-high one -high con . ww troller. troller. controller. troller . 3. om GEH-3091 C, IC71 60 Limitamp Controllers DESCRIPTION GENERAL.

7 The basic Limitamp controller is a front-con . EQUIPMENT IDENTIFICATION-IC NUMBER nected assembly of components and conductors for .c DESIGNATION motor starting, arranged for convenient access, in Basic type designation for all Limitamp air an enclosure which allows space and facilities for break equipment is ic7160 , with significant alpha cable termination, plus interlocking of doors numeric suffixes used to define rating, function, and and isolator to prevent inadvertent entrance to high . model design vintage. voltage parts. No back access is required. This equipment is rated 5000 volts, and may be used on ls voltages between 2300 and 5000 volts. Installation, ic7160 - Fused controller ____. operation, and service should be performed only by IC7161 Unfused controller T. experienced personnel trained in this class of L Model Vintage -r ua Starting and Speed Functions equipment.

8 A - Singlec;peed, full voltage c - 1955. B Single-,;peed/reduced-volt- D- 1960. - . age reactor G - 1966 one-high In general, the unit enclosures are divided into C- Single speed/reduced-volt H- 1966 three-high high-voltage and low- voltage compartments, each age auto-transformer 1 - 1972 42W one-high D- Single speed/part-winding K- 1973 44W two-high with its own separate door and with interior barriers an start L - Vacuum contact or between the two. See Fig. 5, 6 and 7. In order to E - Single-speed/reduced-volt . age primary resistor System Voltage open the high- voltage compartment door, the power G - 2-speed I -winding/full 7 - 2300 volts must be disconnected by a sequence of manual oper . voltage 8 - 4000 volts ations which requires de-energizing the high- voltage H - 2-speed I -winding/reactor 9 - 4600 volts reduced voltage contactor, operating the isolating switch handle, and 1 - 2-speed !

9 -winding/auto . tM. unlatching the door. Low- voltage doors may be transformer reduced '-----Controlled Apparatus voltage 1 - Induction motor entered without disconnecting the power, but should N - 2-speed 2-winding/full voltage 2 - Synchronous motor be done with extreme care and caution. P - 2-speed 2-winding/reactor (ring type). reduced voltage 3 - Wound-rotor motor The upper compartment of one-high controllers 4 - Transformer primary may contain a low-voltage panel, hinged on the left ar Q - 2-speed 2-winding/auto-trans . feeder former reduced voltage 0 - Synchronous motor side, which acts as a barrier to the high-voltage (brushless). Rotation and Braking control power transformer mounted on the upper 1- Non-reversing/non-braking rear cover. 2- Reversing/non-braking lP. 4- Non-reversing/dynamic braking 5- Reversing/dynamic braking 7- Reversing/plugging ca u Dm!

10 IIHl!IIIIIIBIII!!I IUI!IIIllliDillllllll u tri 1111!1111111111111111111111111111111111. lec .E. w Fig. 5. One-high design,show Fig. 6. Two-high design, show Fig. 7. Three-high design for ing separation of low ing high-voltage com . ww compartment separa . and high-voltage com partment. tion. partments for a syn . 4 chronous-motor con . troller. om IC7l 60 Limitamp Controllers, GEH-3091 C. two-, and three- high enclosures, with minor parts differences. Refer to GEH- 3 102. Contactor s used .c in the two- or three-high enclosures contain a posi . tioning handle that is not on the one-high contactor. One-high contactor s contain wheels and bottom stabs that are not on the two- or three-high contactor s. Catalog number s of the parts involved are: Positioning Handle - C at . No. 188A5532G3. ls Wheel and Stab Kit - Cat.