Warning – GE Industrial Solutions Arc Vault Protection System User Manual

Page 38

Arc Vault™ Protection System

DEH-41483 Rev. 3

Operation

Removing Shutter Units (on a de-engergized cubicle)

Visual inspection of primary stab tips can be made by first

removing the breaker and opening the shutters manually.

This is done by rotating the actuating lever that opens the

shutter (See Figure 7-8). If it is necessary to perform work

on the primary disconnects, the shutter unit and the stab

tip bracing must be removed. To remove the shutter,

remove the four screws in the corners of the shutter and

carefully remove shutter unit.

To remove these shutter units, proceed as follows.

1. The shutter is mounted by four screws on the

horizontal stab tip braces located at each side of the

rear of the breaker compartment. See Figure 7-8.

2. Take out two slotted head screws on each side of the

frame and carefully remove the shutter unit.

3. Carefully remove the entire shutter frame.

4. The frame is then maneuvered forward past the

racking cams on each side, then upward and forward

out of the cassette.

Figure 7-8 Arc Vault cassette shutter assembly

Figure 7-9 Arc Vault shutter unit

1. Side frame assembly (right)

2. Racking Cam

3. Shutters

4. Shutter actuator

Installing a Shutter Unit (in a de-energized cubicle)

WARNING

Unless the proper precautions are taken, the

installation of a shutter unit presents the hazard of

electrical shock and burn. Do not install the shutter

unit unless the equipment has been de-energized.

Failure to do this can result in serious injury.

To install these shutter units, proceed as follows.

1. Carefully maneuver the shutter frame into the

compartment, first lifting it over the racking cams on

each side wall of the cassette. Make sure the shutter

fits over the shutter actuator at the bottom of the

cassette.

2. Position the shutter frame against the stab tip braces

and align the holes with the stand off on the braces.

3. After the holes are aligned with the threaded stand offs,

attach the shutter in 4 corner locations using the bolts

supplied.

4. Check the operation of the moveable shutters by

actuating the shutter level on the bottom of the

cassette.

WARNING

Unless the proper precautions are taken, the removal

of a shutter unit presents the hazard of electrical

shock and burn. Do not remove the shutter unit

unless the equipment has been de-energized. Failure

to do this can result in serious injury

Shutter actuating lever