GE Industrial Solutions Arc Vault Protection System User Manual

Page 35

DEH-41483 Rev. 3

Arc Vault™ Protection System

Operation

SECTION 7. OPERATION

ARC VAULT DEVICE OPERATION

Included below are abbreviated operating instructions for

Arc Vault. Before activation of the Arc Vault or operation of

the switchgear equipment, thoroughly read, and be familiar

with this Arc Vault manual.

All Arc Vault devices are manually operated. They are

equipped with an integral charging push button marked

“Push to Charge” on the front of the escutcheon.

The charge indicator will show CHARGED by illuminating

the green LED when the charge button is pressed to the “in”

position.

A mechanically operated DISCHARGE button mounted on

the device escutcheon discharges the unit when pressed to

the “in” position.

ARC VAULT DRAWOUT OPERATION

Arc Vault Positions

Refer to Figure 7-1. The drawout operation features four

positions:

1. CONNECTED - In the CONNECTED position, the primary

and secondary disconnects are fully engaged. The

device must be discharged before it can be racked out

of this position.

2. TEST - When in the TEST position, the primary contacts

are disconnected, but the secondary contacts remain

engaged. This allows test firing the device without

creating a fault on the primary circuit.

3. DISCONNECTED - In the DISCONNECTED position,

neither primary nor secondary contacts are made. The

Device may be racked between these three positions

with the compartment door closed and latched.

4. WITHDRAWN - With the door open, the device can be

rolled out manually from the DISCONNECTED to the

WITHDRAWN position. Here, the device is completely

out of its compartment, ready for removal.

Figure 7-1 Arc Vault gear shown in disconnected position

Drawout Operation

The device is supported on the drawout rails mounted on

the side walls of the cassette. The Arc Vault device has two

wheels on each side of the device frame that rest on each

drawout rail.

Motion is provided by a mechanism mounted on the

bottom of the cassette. This mechanism drives racking

cams which engage pins anchored to each side of the

device.

The cams are driven by a removable racking handle or

remote racker which engages the mechanism. The handle

is inserted through an opening in the cassette escutcheon

below the device.

Turning the handle in a clockwise direction drives the device

into the compartment. As the device disconnect fingers

engage the stab tips, a high force will be felt. Turn the

racking handle and verify position by using the alignment

markers on the side of the device or indicator barrel.

The indicator barrel should clearly show CONNECTED.

The position of the device is given by the position indicator

in the cassette escutcheon as it moves through the door

cutout. Racking position can also be verified by using the

alignment markers on the side of the device.

FRONT DOORS

Operation

The front access doors on all standard Arc Vault equipment

are hinged and equipped with a ¼-turn latch, Fig. 7-3. To

open the door, rotate the knob clockwise ¼ turn.

Door Removal

1. Open door.