GE CR194 Installation Instructions Manual

Two- '9 h. h vacuum limitamp control
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CR194 Two- '9
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Summary of Contents for GE CR194

  • Page 1 CR194 Two- '9 H. h Vacuum Limitamp® Control...
  • Page 2: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ........................... DESCRIPTION ............................Equipment Identification- CR N umber Designation ..........4 General ........................... 5 Ratings ..........................5 Basic Impulse Level (BIL) .................... 5 Dielectric Test Voltage ...., ................... 5 High-Voltage Vacuum Contactors ................
  • Page 3: Introduction

    Product is not intended for nuclear use. CAUTION: INTRODUCTION CR194 two-high vacuum Lim i tamp® con trollers are designed to meet NEMA ICS 3, Part 2 "AC General Purpose High-voltage Class E Controllers" and UL 34 7 requirements, and may be described as metal-enclosed high-interrupting capacity vacuum contactor type starter equipment with manual isolation.
  • Page 4: Description

    36"-wide two-high with both Figure 3. 36"-wide two-high with both low-voltage doors open high-voltage doors open DESCRIPTION Equipment Identification­ CR Number Designation CR194 Two-High Vacuum Limitamp® Con trol CR194 NEMATYPE NEMA EI ( Unfused) NEMA E2 ( Fused) Starting and Speed Functions Enclosure A -Single-speed, full voltage A-26"...
  • Page 5: General

    CR194 Two-High Vacuum Limitamp® Control General The basic CR194 two-high vacuum Limitamp® con trol­ ler is a fron t connected assembly of components and conductors for motor starting, arranged in a conve­ OPERATING nient two-high vertical stack. The enclosure allows...
  • Page 6: Manual Disconnect (Isolation Switch)

    26" or 34"­ wide stationary enclosure. The stationary contactor is easily removed from the controller by disconnecting the line and load power Figure 6. Rear view of CR194 two-high drawout contactor showing stab connectors. CO NT ACTOR TIMING MODULE �...
  • Page 7 CR194 Two-High Vacuum Limitamp® Control •• Figure 10. View of isolation switch in the "ON" position. barriers installed except for the front transparent viewing window. �'*·· Figure 8. View of isolation sWitch in the "ON" position. Barri e rs and fuses are removed for clarity.
  • Page 8: Mechanical Interlocking

    • CR194 Two-High Vacuum Limitamp® Control The high-voltage doors on the CR1 94 two-high vacuum Mechanical Interlocking Limitamp® are mechanically interlocked with the isola­ Vacuum Limitamp® equipment is designed so that the tion switch handle which keeps the high voltage door high-voltage contactor performs all normal load cur­...
  • Page 9: Blown Fuse Indicator & Trip

    All bolted EJ-2 type fuses have inherent blown fuse in­ dication because the striker pin at the top of the fuse protrudes out when the fuse is blown. In the CR194 two-high, the striker pin drives the blown fuse indica­...
  • Page 10 • CR194 Two-High Vacuum Limitamp® Control THIS PAGE BLANK...
  • Page 11: Installation

    It is always preferable to handle Limitamp® con trollers tigh tened. The location for these bolts for the CR194 by the lifting means provided. A single section should two-high is shown in Figure 50, and on the Outline...
  • Page 12: Contactor Removal

    • CR194 Two-High Vacuum Limitamp® Control DISASSEMBLY SEQUENCE: Step Remove the two wing nuts holding the contactor um­ Confirm that equipment is de-ener­ WARNING: bilical cord plug on the righ t side of the con tactor. gized before proceeding with disassembly.
  • Page 13 CR194 Two-High Vacuum Limitamp® Control NOTE: platform lift jack is available from GE that can be used to aid in contactor removal and transport. Order cata­ log No. 55B534913Pl. Step To completely remove the contactor from the enclosure, pull up on the safety stop and move the contactor forward about one ( 1) inch .
  • Page 15 CR194 Two-High Vacuum Limitamp® Control Step 12. To remove the CPT, disconnect the control wires that are attached to the transformer terminal board and disconnect the two CPT high-voltage fuse leads that at­ tach to the lower terminals of the power fuse assembly.
  • Page 16: Taping Instructions For 5Kv

    Taping Instructions for 5kV For electrical clearance, motor terminals and bus splices in the CR194 two-high m ust be taped. Use Scotch #1 30C linerless rubber splicing tape. Apply tape using a medium tension to thin the 0.030" X 2"...
  • Page 17: Incoming Power Connections

    Also see the "Cable Termination Guidelines" section of this instruction . Grounding All con troller enclosures must be grounded, and th e CR194 two-high vacuum Limitamp® is equipped with a CURRENT ground bus for that purpose. The two-high ground bus TRANSFORMER should be bus connected to existing equipment or to a separate cable entrance compartment.
  • Page 18: Motor Cable Termination

    Figure 3 1 . See the "Cable Ter­ mination Guidelines" section of this instruction for ad­ ditional information MOTOR CABLE SIZE LIMITS IN CR194 TWO-HIGH LIMITAMP111 With Shielded With Shielded...
  • Page 19: Cable Termination Guidelines

    CR194 Two-High Vacuum Limitamp® Control NOTE: If the two metal barriers that form the rear cable Once the motor cables are terminated, WARNING: trough (See Figure 32) are mounted in the upper compart­ the cable lugs and the complete motor terminal pads ment, they can be moved to the lower compartment to form the must be taped to maintain necessary electrical clear­...
  • Page 20 • * -- 6 "- CR194 Two-High Vacuum Limitamp® Control GE N0.1310 TAPE OUTER LAYER .._-'� INSIDE FOA RUBBER OA IRRASIL TAPE 111:1 VC TAPE FOA VARNISHED NOTE: CAMBRIC IS RECOMMENDED. FOR DETAILS OF END ALTERNATE: BUILD ENnRE END SEAL SEE FIG. 33 FOR SEAL WITH GE IRRASIL•...
  • Page 21: Control Connections

    Outline Detail section of the drawings provided with ;END SEA s · the equipment. If the control wire is entering a CR194 two-high e nclosure, these i ncoming control conduit locations are shown i n Figure 50, and removable con­...
  • Page 22 • CR194 Two-High Vacuum Limitamp® Control Step 1. Step 6. With the high-voltage door open, push in the door op­ If the mechanism fails to meet any of the above erated release pin as shown in Figure 39. This is not a checks, an adj ustment must be made to the interlock normal operation and should only be used for equip­...
  • Page 23 CR194 Two-High Vacuum Limitamp® Control HANDLE AND ISOLATION SWITCH OPERATION Confirm that equipment is de-ener­ REF: HANDLE IN WARNING: "ON" POSITION gized before performing this check. Step 1. With the high-voltage door open, push in the door op­ erated release pin as shoWn in Figure 39. This is not a normal operation and should only be used for equip­...
  • Page 24: Vacuum Interrupter Integrity Test

    1:-ITERLOCK PLU:>IGERS FULLY \\1TH HA. "'DLE 1:-1 "OFF" POSITI0:-1 Figure Checking test power interlock (TPI) adjustment NOTE: I f the controller Jails to meet any of the above Me­ chanical Operation Checks, DO NOT ENERGIZE THE CONTROLLER. Contact your nearest GE sales of fice.
  • Page 25: Preparation Of Controller For Opei:ation

    CR194 Two-High Vacuum Limitamp® Control NOTE: No attempt should be made to compare the condition TEST PROCEDURE o f one vacuum interrupter with another nor to correlate the Step 1. condition of any interrupter to low values o f DC leakage cur­...
  • Page 26: Operation

    • CR194 Two-High Vacuum Limitamp® Control Normal Operation OPERATION Step 1. CAUTION: Before proceeding with operation of Upon completion of the above items under "Opera­ the equipment, insure that at this time the equip­ tion" , the equipment is now ready for e nergization.
  • Page 27: Normal High-Voltage Door Opening Procedure

    CR194 Two-High Vacuum Limitam,P Control Normal High-Voltage Door O p ening Procedure LOW VOLTAGE DOOR LATCHES To open the high-vol tage door to gain access to the contactor or motor terminals, the con tactor must be in th e de-energized position. If the contactor is ener­...
  • Page 28: Inspection, Maintenance & Servicing

    • CR194 Two-High Vacuum Limitamp® Control Step 5. INSPECTION, While pulling on the h igh-voltage door, lift up on the MAINTENANCE & SERVICING defeater bracket as shown in Figure 48 to allow the high-voltage door to open. Before performing any inspection, WARNING: Defeating the high-voltage door inter­...
  • Page 29 CR194 Two-High Vacuum Limitamp® Control Step 6. All power must be removed from the WARNING: Tighten the set screw on the nut to lock the adj ust­ main bus before attempting to adj ust the isolation ment in position . Use caution to prevent turning the swi tch mechanism.
  • Page 30: Preventive Maintenance Guide

    • CR194 Two-High Vacuum Limitamp® Control Torque Recommendations For Electrical sal t water, etc. ) . Power Connections Mechanical wear and fatigue on all moving parts. Heat. Bolt Size SAE Grade Bolt Torque ( ft-lb) Loose joints and con n ec tions.
  • Page 31 N O T E S B l - AC POWER BUS C - CONTROL LEAD TERM I NAL BOARD D - MOTOR LEAD TERMINAL CONNECT I ON - SPACE REQU I RE D TO OPEN DOORS 90 DEGREES H - AISL E FOR CONTACTOR REMOVAL J - MOUNT I NG HOLES FOR l /2 I N .
  • Page 33 CR194 Two-High Vacuum Limitamp® Control...
  • Page 34 • CR194 Two-High Vacuum Limitamp® Control...
  • Page 36 Should further i n formation be desired or should particular probl ems arise which are n o t covered sufficiently for the purchaser's purposes, the m atter should be referred to the GE Company. GE Electrical Distribution Control &...

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