ABB ACS880-77CC, Hardware Manual

Page: 19 / 128

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Disconnecting the auxiliary power supply (if present)
WARNING!
If you are not a qualified electrician, do not proceed.
1. Make sure that you have opened the main circuit breaker (Q1). See section Opening
and disconnecting the main circuit breaker (page 16) .
2. In the upper part of the main circuit breaker cubicle, turn the auxiliary power supply
switch (Q2) from ON position (2a) to the OFF position (2b).
3. Lock the switch Q2 to the OFF position with a padlock. Stow the key(s) in a safe place.
4. Write your name, phone number and the date to the “Do not switch on. Men at work”
warning sign and hang the warning sign to the switch Q2.
2a
2b
3
Safety instructions 19