Warning – GE Industrial Solutions Arc Vault Protection System User Manual

Page 31

DEH-41483 Rev. 3

Arc Vault™ Protection System

Installing and Removing The Arc Vault Device

SECTION 5. INSTALLING AND REMOVING THE

ARC VAULT DEVICE

GENERAL

Inspection and Preparation of Arc Vault

Before installing, operating, or removing an Arc Vault, check

thoroughly for damaged or loose parts and for any dirt or

foreign matter which may be on the Arc Vault. Be sure that

a thin film of GE lubricating grease D6A15A2 is present on

primary disconnects of the switchgear before installing the

Arc Vault.

Arc Vault Installation

To install an Arc Vault, proceed as follows:

1. Before installing check the contact areas on each

primary disconnect bar or cluster of fingers for foreign

matter that may have accumulated. Clean these areas

if necessary. Be sure that a thin film of GE lubricating

grease D6A15A2 covers the contact areas before

putting the Arc Vault in the compartment.

2. Check to see that the Arc Vault matches its respective

compartment. The Arc Vault is assigned a part or mark

number. This number is shown on the sheets of the

summary, the front view drawings, and on the

identification card on the Arc Vault shipping carton. The

Arc Vault may also be identified using the 6 digit

catalog number.

3. To locate the Arc Vault in the proper compartment,

refer to the breaker location list on the front view

drawing. Find the proper Arc Vault device by the

identification card on the carton.

Rejection Feature

Drawout breakers of the same type and rating are

interchangeable in their equipment compartments.

Arc Vault devices will be rejected in a standard AKD-20

switchgear compartment. Drawout breakers will be

rejected from a Arc Vault compartment.

INSTALLING ARC VAULT DEVICE

Pre-Installation precautions

Prior to lifting the Arc Vault to its intended compartment

location, observe the following precautions.

1. Check the compartment to ensure that it is free of

foreign objects.

2. Verify that the Arc Vault is the correct type for that

compartment.

3. Ensure that the Arc Vault is discharged.

4. Apply a thin fresh coat of GE lubricating grease

D6A15A2 to the breaker’s primary disconnects.

5. Ensure that the position indicator on the cassette is in

the disconnected position and is correctly positioned

for initial engagement. To do this, open the racking

handle door and insert the racking handle and rotate it

fully counterclockwise.

Installation Procedures

To install the Arc Vault, proceed as follows.

1. Carefully place the Arc Vault device in front of the

section in which it is to be installed.

2. Open the compartment door by rotating the door latch

assembly ¼ turn clockwise.

3. Using the Arc Vault lifting mechanism shown in Figure

11-1 page 38 (or a suitable lifting mechanism and the

appropriate lifting fixture), raise the device above the

elevation of the rails.

WARNING

Do not stand under the Arc Vault during the lifting

operation. This may result in injury if the device is not

positioned properly on rails.

4. Fully withdraw rails to stops.

5. Slowly lower and guide the device to allow the 4 Arc

Vault wheels to align with the rails. Remove the lifting

device. The device is now positioned on the draw-out

rails.

6. Roll the device into the compartment until the racking

forks meet the racking pin, this is the DISCONNECT

position. If an incorrect Arc Vault has been installed, the

interference pins on the Arc Vault will interfere with the

rejection pins in the compartment prior to reaching the

disconnect position. At this point, the racking forks on

the cassette are contacting the fixed racking pins on

the device.

7. Slide rails back into compartment. Close the

compartment door and rotate latch ¼ turn counter-

clockwise.

8. Engage the racking handle by using a slot screwdriver

to open the racking shaft door by rotating it clockwise,

then insert hex manual racking handle.

9. Rotate the handle clockwise as far as it will go. As you

rotate the handle clockwise, the device will travel from

the DISCONNECT, through the TEST.

10. See SECTION 1 for detailed procedure during racking to

start test procedure.