GE Industrial Solutions GERAPID 2508, 4008, 5008, 6008 WITH ARC CHUTE 1X2 User Manual

Page 53

2011-03-14 S47183De rev.01

Design and specifications are subject to change without notice

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