19 – 14
19.2.4 Function check
- Close the cubicle doors
- Charge closing spring of circuit breakers to be interlocked (page 6-4)
- Test the various possibilities of the planned interlocking configuration one after the other
- Re-adjust Bowden cables if necessary
Then:
- Discharge the closing spring of the circuit breakers to be interlocked (page 23-2)
Catalog Numbers
Note
The following maintenance points must be followed:
1 The adjustment of the Bowden cables needs to be checked after the first 100 switching operations and must be readjusted if
necessary.
2 The adjustment of the interlocking device needs to be checked and, if necessary, readjusted every 1000 operations or at least
once every year.
3 During the inspection, the Bowden cables have to be checked against kinks and abrasions, split wires of the exposed
steel cable, damage to the cable housing and the adjustment unit (tube setting with thread and nut) and have to be readjusted
if necessary. In addition, the movability of movable parts of the interlocking device in their bearings needs to be examined.
4 In extreme environmental conditions (e.g. increased environmental temperature or exposure to chemicals) maintenance checks
needs to be performed more frequently.
5 When maintaining the circuit breaker, check the operation of the interlock device and replace as necessary. See table (page -14).
Mechanical Interlocking Catlog number
Mechanical interlock assembly WLNTLK
Qty.(1) Bowden Cable - 2m WLNTLWIRE2
Qty.(1) Bowden Cable - 4.5m WLNTLWIRE4
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