ABB ADVAC - RACKING; DISCONNECT THROUGH TEST; TEST THROUGH CONNECT

10
ABB
MECHANISM AND OPERATION
6 7 8
1110
12
15
14
5
4
3
2
1
9
21
20
19
18
17
16
13
# DESCRIPTION # DESCRIPTION
1
VACUUM INTERRUPTER
12
MAIN SHAFT
2
STATIONARY CONTACT
13
CHARGING PAWL
3
MOVING CONTACT
14
CHARING HANDLE
4
CONTACT SPRINGS
15
AUXILIARY SHAFT
5
PUSH ROD
16
AUXILIARY CONTACT
6
OPENING SPRING
17
MOTOR LIMIT SWITCH
7
ROCKER ARM
18
CLOSE PUSH BUTTON
8
CAM
19
HALF SHAFTS (2)
9
STOP DISK
20
CLOSING TRIGGER
10
MOTOR DISCONNECT SWITCH
21
OPENING TRIGGER
11
CLOSING SPRING
FIGURE 2: CIRCUIT BREAKER BASIC OPERATING MECHANISM
Courtesy of NationalSwitchgear.com