GE Industrial Solutions Arc Vault Protection System - Manual (Page 31)

DEH-41483 Rev. 3 Arc Vault™ Protection System
Installing and Removing The Arc Vault Device
© 2011 General Electric All Rights Reserved 23
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.