3BHS135824 ZAB E01Rev. D 19 (of 62)
3 All openings in the motor must be closed and the protective covers
over the shaft must be reinstalled. The doors of the slip ring
compartment must be closed.
4 All covers for the power cable terminals or terminal boxes in the
ACS 6000, motor, transformers and MCB must be closed.
5 Open transformer and motor cable ends must be tied together and
properly earthed.
Check that the above mentioned points are fulfilled before
commissioning is continued.
3.7 Cleanness
Civil works must be finished in the converter room.
Cable openings should be closed to avoid dust entering into the
cabinets.
The converter room must be clean and free of dust. Waste from any
installation work must be removed.
The air conditioning of the room must be in operation. Requirements
for ambient temperature, cooling water and converter room can be
found on the rating plate of the ACS 6000.
Before any test is carried out, it must be checked that foreign parts and
dust have been removed from the converter cabinets. It is very
important that the cabinets are free of dust to prevent weakening of the
busbar insulation and dust building up on air cooling elements.
Cooling air filters must be checked.
The motor area must be cleaned so that it is safe to run the motors. All
waste that can be in contact with the shaft or the cooling air inlets must
be removed. The slip rings, brushes and brush holders of synchronous
motors must e checked for cleanness. Cleaning of the whole slip ring
compartment before start-up is recommended.
The transformer area must be cleaned and waste from installation work
must be taken away.
Cleanness of the equipment should be checked at least twice during
commissioning.
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