ABB AMVAC Installation And Operation Manual page 12

2. Begin racking procedure using approved racking crank:
a. Insert racking crank socket into breaker door access port and rotate until socket slides into position.
b. Hold racking crank with left hand and depress position lever with right hand.
c. Turn racking crank counter-clockwise for a ¼ turn before releasing position lever.
d. Continue racking counter-clockwise (approx. 21 turns) until "Test" position is reached.
e. A positive stop will be felt and the position release lever will snap into up position.
f. Relieve tension on the racking pin and mechanical/electrical interlocks by reversing the racking crank slightly.
T → D
EST ISCONNECT
1. Perform visual inspection of the circuit breaker:
a. Verify breaker is OPEN (push open button or initiate external electric trip if CLOSED).
b. Verify switchgear breaker door is closed and secured.
2. Begin racking procedure using approved racking crank:
a. Follow step 2 or racking for the disconnect to test position.
Approximate Distance from
Disconnect
Manual Operation
Electrical Operation
Control Power Available
Shutter
Primary Contacts Engaged
Position Indication
Interlocks
Requirements To Rack
breaker from Position
Notes:
A. Closed door racking is recommended between ALL positions.
I
B
C
H
12
INSERTION AND REMOVAL
:
DISCONNECT
YES
NO
NO
CLOSED
NO
POSITIVE LOCK & CELL DECAL
INTERFERENCE BLOCKING PREVENTS
INSERTION
RELEASE LEVER
BREAKER OPEN
POSITION RELEASE LEVER ACTUATED
Table 1: Summary Racking Data
E
G
A
1VAL050601-MB Rev C
TEST
40 MM
4 REVOLUTIONS
1.57 INCHES
YES
YES
YES
CLOSED
NO
POSITIVE LOCK & CELL DECAL
RELEASE LEVER
CLOSING PREVENTED BETWEEN
POSITIONS
BREAKER OPEN
POSITION RELEASE LEVER ACTUATED
#
A COMPARTMENT SLOTS
F
B GROUND BAR
C INTERFERENCE
BLOCKING PLATE
D SECONDARY DISCONNECTS
WHEEL RAILS
E
D
F SHUTTERS
G BREAKER POSITION LABEL
DISCONNECT / TEST / CONNECT
H COMPARTMENT DOOR
TOC SWITCH
I
CONNECT
250 MM
25 REVOLUTIONS
9.84 INCHES
NOT RECOMMENDED
YES
YES
OPEN
YES
POSITIVE LOCK & CELL DECAL
CLOSING PREVENTED BETWEEN
POSITIONS
RELEASE LEVER
BREAKER OPEN
POSITION RELEASE LEVER ACTUATED
Description
Figure 1: Basic Cell