Table of Contents
Advertisement
Vehicle Description
2. Electrically or mechanically charge the circuit breaker.
3. With the circuit breaker charged, electrically or manually
perform a close operation on the circuit breaker. The
circuit breaker should latch closed, indicated by the
close-open indicator (Figure 5, page 11).
If the circuit breaker does not latch closed and springs
charge, contact local Siemens office for information.
After successful operation of the circuit breaker, it is
important to verify trip-free/spring dump operation when
racking the circuit breaker from Connect to the Disconnect/
Test position.
To verify this function follow the following procedure:
1. With circuit breaker charged and closed, pull elevating
mechanism handle. This action should displace the trip-
free roller counter-clockwise, resulting in the immediate
discharge of the closing spring and the opening of the
circuit breaker.
Figure 4. MOC Actuator (Circuit Breaker Connect Position)
2. Rack the circuit breaker to a position between Connect
and Disconnect/Test. Repeat steps 1, 2, and 3 listed in
the procedure detailed in section entitled "Trip-Free
Racking".
Should any problems arise with the trip-free/spring dump
interlock, follow the adjustment procedure listed below.
Adjustment Procedure — Trip-Free/Spring Dump
If the existing manufacturer's cubicle is properly maintained
and adjusted, no adjustment to the trip-free/spring dump
interlock on the type GER circuit breaker should be
necessary.
Should problems with this interlock arise the first step is to
verify that the cubicle is arrange as required by the original
manufacturer's specifications.
If problems still exist after reviewing this information and
making any required adjustments to the cubicle, the trip-
free/spring dump interlock can be adjusted by following the
steps listed below: (Refer to Figure 1, 2, and 3)
8
Advertisement
Table of Contents
