GE Industrial Solutions GERAPID 2508, 4008, 5008, 6008 WITH ARC CHUTE 1X2 - Manual (Page 53)

2011-03-14 S47183De rev.01 Design and specifications are subject to change without notice 53
6.2.5 Adjusting the auxiliary switch
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 auxiliary switches may be required if they
fail to provide correct position indication. This condition can
be caused by misalignment of the actuating plate [Item 6.
56-2], represented by dashed line on Fig 56-3.
 If only 3 or 5 switches are installed in the center of the
block, plate misalignment is extremely unlikely (breakers
built after 2003).
 In the case of 10 switches or when switches are mounted at
the far left position, adjustment might be needed (breaker
before 2003). In most cases, only far left or far right mounted
switches will need to be re-adjusted.
 Check operation of all switches to establish which may
require re-adjusting (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 hex bolt (4) on the side (left or right),
which needs to be re-adjusted. Turn the proper adjusting
screw (5) clockwise, until all contacts change state properly.
Warning! Adjusting screw (5) too far in may over compress
the switches’ operating pin and cause breakdown.
 [Fig. 56-1] Check the correct operation of all switches at the
connecting plug terminations X4 and X5. If necessary re-
adjust the switches from other side.
 Now tighten firmly the hex bolts (4).
 [Fig. 56-1] Replace the control box with front cover (1) by
replacing the four screws (2). Pay attention, that no wiring is
pinched between box and front plate.
 CLOSE the breaker several times. Check if the auxiliary
contacts are switching over correctly.
If the breaker is being used in a draw-out configuration,
check the electrical functions in the “TEST-position” after
installing the breaker into the cell.
.
Fig. 56-1 Control box with auxiliary switch block
Fig. 56-2 Auxiliary switch block
Fig. 56-3 Actuating plate for auxiliary switch block
Gerapid in “ON“ position:
Main contacts closed.
Aux. switches not actuated Gerapid in "OFF“ position:
Main contacts open.
Auxiliary
switches actuated
6
2 3
5
1
2
2
6
4
3
5