Capacitors; Reforming The Capacitors - ABB ACS880-207 Hardware Manual

100 Maintenance

Capacitors

The DC circuit of a supply module contains several electrolytic capacitors. Their lifespan
depends on the operating time, loading and ambient temperature. Capacitor life can be
prolonged by lowering the ambient temperature.
Capacitor failure is usually followed by damage to the unit and an input fuse failure, or a
fault trip. Contact ABB if capacitor failure is suspected. Replacements are available from
ABB. Do not use other than ABB-specified spare parts. Contact an ABB service
representative for spare parts and repair services.

Reforming the capacitors


The DC circuit capacitors must be reformed if the drive has not been powered (either in
storage or unused) for a year or more. See section Type designation labels (page 33) for
information on finding out the manufacturing date. For information on reforming the
capacitors, see Converter module capacitor reforming instructions (3BFE64059629
[English]).