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Cutler-Hammer VCP-W Instructions Manual

Simple electrical ground and test device
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Instructions for the Type VCP-W
Electrical Ground and Test Device (Simple)
Cutler-Hammer, Inc.
1000 Cherrington Parkway
Moon Twp., PA 15108
Effective April 1, 1999
I.B. 792A190B
April 1999

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Summary of Contents for Cutler-Hammer VCP-W

  • Page 1 Instructions for the Type VCP-W Electrical Ground and Test Device (Simple) I.B. 792A190B Cutler-Hammer, Inc. 1000 Cherrington Parkway Moon Twp., PA 15108 Effective April 1, 1999 April 1999...

  • Page 2: Table Of Contents

    I.B. 792A190B Type VCP-W ELECTRICAL GROUND AND TEST DEVICE (Simple) CONTENTS: PAGE NO. Purpose Description Power Grounding Switch Operation Interlocks and Safety Features Operation Safe Practices Grounding Cable Testing Phasing Out Figures 1. Side View – Lower Terminals 2. Side View – Upper Terminals 3.

  • Page 3: Purpose

    TYPE VCP-W ELECTRICAL GROUND & TEST DEVICE (SIMPLE) PURPOSE The VCP-W Electrical Ground and Test Device is designed for insertion into a Vac Clad-W switchgear compartment to provide a safe and convenient means to: 1. Ground the circuit for maintenance work 2.

  • Page 4: Power Grounding Switch Operation

    The stored energy closing mechanism for the power grounding switch is the same as used in the Type VCP-W breakers. It is capable of applying the ground against a “Live” circuit if operational errors have not cleared the circuit. However,...

  • Page 5: Interlocks And Safety Features

    I.B. 792A190B Once the ground switch is closed, it can be locked in the “Closed” position by removing the cable from the receptacle on the device and locking the sliding cover that permits access to the receptacle and manual “Push to Open” button. OPENING The grounding switch can be opened by manual operation of the “Push to Open”...
  • Page 6 I.B. 792A190B • The grounding switch can be locked closed with a key interlock or padlock. This is accomplished by locking the sliding cover on the device panel to prevent access to the manual “Push to Open” button cable receptacle, Figure •...

  • Page 7: Operation

    I.B. 792A190B OPERATION SAFE PRACTICES Ground and test device is a safety-related device. It must be recognized that IMPROPER USE CAN RESULT IN DEATH, SERIOUS PERSONAL INJURY, OR PROPERTY DAMAGE. That is why it is most important that the user developed specific and safe operating procedures for its use. The following general safe practices are recommended: •...

  • Page 8: Grounding

    I.B. 792A190B • Do not remove the device front panel while using this device. • Beofre inserting the device into the breaker compartment, CORRECTLY IDENTIFY LINE AND BUS TERMINALS FOR THE BREAKER COMPARTMENT and visually make certain that the correct Electrical Ground and Test Device is being used. The device should connect to the Line Terminals.

  • Page 9: Cable Testing

    I.B. 792A190B 6. After the circuit is checked “dead” and made certain that it is maintained “dead”, connect the remote switch cable and close the grounding switch from the safest distance. 7. Padlock the ground switch closed by disconnecting the control switch cable and sliding the cover to the left.

  • Page 10: Phasing Out

    I.B. 792A190B 6. After the circuit is checked “dead” and made certain that it is maintained “dead”, insert the insulated test probes into the Test ports. With the grounding switch open, apply the test voltage to the cables via the insulated test probes. (C) For Phasing-Out 1.

  • Page 11: Side View - Lower Terminals

    I.B. 792A190B 1. Terminal test ports padlock 2. Grounding switch operations key interlock 3. Lever latch handle 4. Grounding switch blade 5. Lower terminals (1200/2000A shown) FIGURE 1 – SIDE VIEW – LOWER TERMINAL DEVICE April 1999...

  • Page 12: Side View - Upper Terminals

    I.B. 792A190B 1. Terminal test ports padlock 2. Grounding switch operations key interlock 3. Lever latch handle 4. Grounding switch blade 5. Upper terminals (3000A shown) FIGURE 2 – SIDE VIEW – UPPER TERMINAL DEVICE April 1999...

  • Page 13: Front View

    I.B. 792A190B 1. Terminal Port 8. Remote control receptacle 2. Terminal test ports padlock 9. Grounding switch access panel 3. Grounding switch operation interlock 10. Floor tripper 4. Operations Counter 11. Code plate 5. Grounding switch position indicator 12. Manual trip button 6.

  • Page 14: Control Scheme - Power Trip

    I.B. 792A190B CONTROL SWITCH VERTICAL: NO CIRCUIT (SPRING RETURNE POSITION) CW: CLOSE CCW: TRIP ANTI PUMP RELAY CHARGING MOTOR LIMIT SWITCH (SHOWN – SPRING DISCHARGED) SHUNT TRIP COIL TIME DELAY RELAY: SEALS IN TO COMPLETE CHARGING & CLOSING, 20 SECONDS DELAY ON DROPOUT, BLOCKS TRIPPING FOR 20 SECONDS AFTER CLOSING AUXILIARY SWITCH CONTACT AUXILIARY SWITCH CONTACT...

  • Page 15: Control Scheme - Manual Trip

    I.B. 792A190B CONTROL SWITCH VERTICAL: NO CIRCUIT (SPRING RETURN POSITION) CCW: CHARGE & CLOSE SEAL IN RELAY CHARGING MOTOR LIMIT SWITCH (SHOWN – SPRING DISCHARGED) SPRING RELEASE COIL BRIDGE RECTIFIER POSITION SWITCH (PREVENTS CHARGING BETWEEN “TEST” AND “CONNECTED” POSITIONS AUXILIARY SWITCH CONTACT FIGURE 5 –...
  • Page 16 I.B. 792A190B NOTES April 1999...
  • Page 17 Cutler-Hammer, Inc. selling policies or other contractual agreement between the parties. This literature is not intended to and does not remedies of any purchaser of this equipment is the contract between the purchaser and Cutler-Hammer, Inc. NO WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING...

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