GE Consumer & Industrial - G E Power Controls

6.2.5 Adjusting the auxiliary switch
1 2 3
1. OPEN the breaker.
2. Disconnect power supply, and pull out all the
plugs from control box’s terminals.
3. In case of NEKO control unit inside, wait 1
minute until capacitors discharge.
Adjustment of the switches may be required if they fail to
provide correct position indication. This condition can be
caused by misalignment of the actuating plate (6) [Fig.
56-3], represented by dashed line.
If only 3 or 5 switches are installed in the center of the
block, plate misalignment will not occur (breakers built
after 2003).
In the case of 10 switches or when switches are
mounted at the far left position, it might be needed
(breaker before 2003). In most cases, only far left or far
right mounted switches might need to be re-adjusted.
Check all the switches operation to establish which need
to be re-adjusted (left or right side).
OPEN the breaker.
[Fig. 56-1] Loosen four screws (2). Move the front cover
(1) slowly down. The auxiliary switch block (3) is
accessible now, in the bottom of the compartment.
[Fig. 56-2] Loosen screw (4) on the side (left or right),
which needs to be re-adjusted. Turn the proper adjusting
screw (5) clockwise, until all contacts switch properly.
Warning! Adjusting screw (5) too far in may over
compress the switches’ pin and cause breakdown.
[Fig. 56-1] Check the correct signalization of all switches
at the connecting plug terminations X4, X5! If necessary
re-adjust the switches from other side.
Now tighten solid the screws (4).
[Fig. 56-1] Close the control box with front cover (1) by
fixing the four screws (2). Pay attention, that no cables
will be pinched between box and front plate.
CLOSE the breaker several times. Check if the auxiliary
contacts are switching over correctly.
Finally check the electrical functions in the “TESTposition”
of the draw-out version after installing the
breaker into the substation.
Fig. 56-1 Control box with auxiliary switch block
5
4
Fig. 56-2 Auxiliary switch block
3
6
6
If re-adjustment does not help, please contact GE Service
Team. It might be required to install switch block again or to
move switches to center of the block for better performance.
Gerapid in “ON“ position:
Main contacts closed.
Aux. switches not actuated
Gerapid in "OFF“ position:
Main contacts open.
Auxiliary switches actuated
Fig. 56-3 Actuating plate for auxiliary switch block
48 Design and specifications are subject to change without notice S47183R01E06 2012-11-21