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.
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"...
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...
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 �...
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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.
• 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...
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...
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• CR194 Two-High Vacuum Limitamp® Control THIS PAGE BLANK...
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...
• 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.
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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 .
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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.
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"...
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.
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...
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...
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• * -- 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•...
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...
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• 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...
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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...
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.
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...
• 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.
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...
• 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...
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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.
• 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.
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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 .
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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 &...