3BHS135824 ZAB E01Rev. D 21 (of 62)
Chapter 4 - Commissioning Other Drive Components
In general, the scope of the commissioning is determined by the
project.
The items in the following sections must be checked or confirmation
obtained that they have been checked (e.g. measurement results of
insulation resistances of other drive components and cables).
4.1 Main Circuit Breaker (MCB)
Refer to the manufacturer’s documentation for commissioning
instructions of the MCB. The correct operation of the MCB will be
tested later when the converter will be energized for the first time.
If MCB is new and insulation tests have not been carried out, all tests
must be carried out according to the instructions of the manufacturer.
The must have the following features:
• 1 closing (shunt release ON) coil
• 2 opening (shunt release OFF) coils
Installation of only 1 opening coil is not recommended
• 1 undervoltage release coil
• A maximum total breaking time of 60 ms must be guaranteed
Note: Protection relays in feeding switchgear must be tested and in
operation, especially the relays of converter transformers. The set
values of these relays must be checked by the commissioning
engineer and compared with the calculated drive currents. Relay test
protocols must be available at site during the whole period of the
commissioning.
For details on MCB requirements refer to the Main Circuit Breaker
Specification (document number 3BHS125149).
See project related documentation (wiring diagrams) for applications,
where the auxiliary power for the MCB undervoltage opening coil is
supplied by the ACS 6000..
Follow the checkpoints of the commissioning report.
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