Chapter 3 - Changing Diodes and Thyristors in LSU ABB
3-2 (6) 3BHS202077 ZAB E01 Rev. C ACS 6000 Maintenance Manual
1 Deenergize and ground the ACS 6000.
2 Stop the cooling water pumps and make sure that they cannot be
switched on by accident.
Danger: The ACS 6000 is a high voltage device.
Make sure that the cabinet has been completely deenergized and that
power cannot be applied by accident.
Failure to do so may result in injury or death.
Note: After switching off the mains and after the motor has come to a stop,
allow the DC link capacitors to discharge. The light GND.- SWITCH
UNLOCKED must be on, before grounding the ACS 6000.
3 Switch off the auxiliary power. Refer to the wiring diagram to identify
the circuit breaker.
3.2 Safety
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