Accessories

For 6055-30 Masterclad 15 kV Class Medium Voltage Indoor Switchgear Instruction Bulletin, 6055-52 and 6055-62 Masterclad Metal-Clad 15 kV Arc Resistant Switchgear User Guide

If the switchgear is installed on a raised pad OR if a device is being installed or removed from an upper section, a lift truck is required to install Type VR device.

Typical Lift Truck

The lift truck platform is raised and lowered by a self-braking worm and pinion drive system with a winch and wire cable. No ratchet release or locking is required because of the automatic load; retaining clutch feature. Rotating the handle clockwise raises the lift truck platform. Rotating the handle counterclockwise lowers the lift truck platform.

DANGER

HAZARD OF electric shock, explosion, or arc flash Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E and CSA Z462. Turn off all power supplying this equipment before working on it. Before performing maintenance on this device, disconnect all sources of electric power. Assume all circuits are live until they are completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power. Check interconnection diagrams and make sure there are no backfeed potential sources. Always use a properly rated voltage sensing device to confirm that power is off. Failure to follow these instructions will result in death or serious injury.

To remove a Type VR device from the circuit breaker compartment with the lift truck:

1. Read and understand all instructions before beginning any work.

2. Turn off all power supplying the equipment before working on it.

3. Ensure the lift truck platform is completely lowered.

4. Position the lift truck directly in front of the circuit breaker compartment.

5. Follow the instructions provided in Racking Mechanism to open the circuit breaker compartment door.

6. Push the lift truck forward within four to six inch (101.6 -152.4 mm) of the cubicle.

7. Raise the lift truck platform until the lift truck platform hook feature clears the cradle catch features of the circuit breaker compartment.

8. Push the lift truck in towards the cubicle to align the lift truck platform hook feature directly above the cradle catch features and apply the lift truck brake on the lift truck.

9. Lower the lift truck platform until the lift truck hook feature is engaged in the cradle catch features.

10. Roll the Type VR device onto the lift truck platform.

11. Ensure the primary latch is properly engaged on the frame of the Type VR device.

12. Attach the circuit breaker retention cable to the provided hole on the Type VR device.

13. Raise the lift truck platform until the lift truck platform hook feature clears the cradle catch features of the circuit breaker compartment.

14. Unlock the lift truck brake and slowly pull the lift truck back away from the cubicle approximately four to six inch (101.6 -152.4 mm).

15. Lock the brake again.

16. Lower the lift truck platform.

17. Unlock the lift truck brake and move the lift truck away from the cubicle to allow enough clearance to remove the Type VR device from the lift truck platform.

18. Ensure the lift truck platform is lowered all the way to the floor.

19. To remove the Type VR device from the lift truck, disconnect the circuit breaker retention cable from the front of the Type VR device.

20. Push the Type VR device slightly toward the back of the lift truck platform and pull the lever on the back of the cradle while rolling the Type VR device off of the lift truck platform.

To install a Type VR device in the circuit breaker compartment with the lift truck:

1. Read and understand all instructions before beginning any work.

2. Turn off all power supplying the equipment before working on it.

3. Ensure the lift truck platform is completely lowered.

4. Roll the Type VR device onto the lift truck platform.

5. Ensure the primary latch is properly engaged on the frame of the Type VR device.

6. Attach the circuit breaker retention cable to the provided hole on the Type VR device.

7. With the lift truck platform lowered, position the lift truck directly in front of the circuit breaker compartment.

8. Follow the instructions provided in Initial Circuit Breaker Installation to open the circuit breaker compartment door.

9. Push the lift truck forward within four to six inch (101.6 -152.4 mm) of the cubicle and apply the lift truck brake.

10. Raise the lift truck platform until the lift truck platform hook feature clears the cradle catch features of the circuit breaker compartment.

11. Unlock the lift truck brake and slowly push the lift truck in towards the cubicle to align the lift truck platform hook feature directly above the cradle catch features and lock the wheels on the lift truck.

12. Lower the lift truck platform until the lift truck hook feature is secured in the cradle catch features and apply the lift truck brake.

13. To remove the Type VR device from the lift truck, disconnect the circuit breaker retention cable from the front of the Type VR device.

14. Push the Type VR device slightly toward the back of the lift truck platform and pull the lever on the back of the cradle while rolling the Type VR device off of the lift truck platform into the circuit breaker compartment.

Label 1–Lift Truck Compatibility — Standard Lift Truck and 63 kA EG&T Version

Label 2–Lift Truck Operation

An optional wall-mounted test cabinet (see Wall-Mounted Test Cabinet (optional)) is furnished when listed in the user’s specifications. The test cabinet consists of:

• Small enclosure with a power on-off toggle switch

• White power-on indicating light

• Red circuit-breaker-closed indicating light

• Green circuit-breaker-open indicating light

• CLOSE and OPEN push buttons

• Eight ft. (2.4 m) cable with a secondary control receptacle that can be plugged directly into the circuit breaker control plug

Refer to the customer drawings for the external power connections and requirements necessary for the cabinet. A convenient terminal block is provided inside the test cabinet for these connections.

Wall-Mounted Test Cabinet (optional)

Two types of ground and test devices are available:

• Manual

• Automatic

Ground and test devices are devices, typically used for:

• Grounding of circuits during maintenance periods

• Connection points for applying voltage for hi-pot testing and cable testing

• Access to both line- side and load-side circuits for phase sequence testing

A complete description, operating instructions, and maintenance information is included in a separate ground and test devices instruction bulletin. For specific ground and test device instructions, refer to 6055-34, 6055-37, 6055-38 or 6055-62 as required.