Operational check out instructions
2.As the blade continues to rotate open, the interrupter lever must make full
3.As the blade continues to rotate open, the interrupter will trip thus interrupting the load. The interrupter must trip while the lever arm is in
4.Continue to open the switch until the interrupter lever has cleared the end of the nylon push bar, the lever will spring back slightly. This allows the nylon bumper of the contactor assembly to engage the lever and lift the lever into position, when the switch is being closed. Open the switch fully.
4.Now, close the switch slowly. The following operations and checks should be made:
a)As the blade rotates closed, the push bar must pick up the lever at least 1/2" (12.7 mm) from the end of the lever (refer to Figure 15: Lever pick up).
b)Continue to close the blade, when the lever is at 90° to the interrupter, the push bar should be at least 1/2" (12.7 mm) from the side of the yoke. At no time during the closing of the switch should the push bar touch the connecting rod or yoke (refer to Figure 16: Push bar).
c)Close the switch completely and verify that the interrupter resets (cocks) for the next opening operation.
A
Item | Description |
|
|
A | Contactor |
|
|
Figure 13: Contactor connection
A
B 
Item | Description |
A1/2" (12.7 mm) to 3/4" (19 mm)
BNylon push bar
Figure 15: Lever pick up
d)In the fully closed position, the lever should rest on the bumper, and stick above the bumper at least 1/8"
(3.2 mm) (refer to Figure 17: Lever position).
e)These adjustment checks should be repeated on each independent switch blade/phase.
5.The switch is now ready for installation of the conductors.
A
Item | Description |
A1/2" (12.7 mm) to
3/4" (19 mm)
Figure 14: Contactor space
A
Item | Description |
A1/2" (12.7 mm) to
3/4" (19 mm)
Figure 16: Push bar
A 
B 
Item | Description |
AAir gap
BBumper
Figure 17: Lever position
15
