ABB ACS880-77CC, Hardware Manual

Page: 16 / 128

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Opening and disconnecting the main circuit breaker
These instructions are for the qualified electricians who do work on the converter, generator
cable or generator.
WARNING!
If you are not a qualified electrician, do not proceed or do any installation or
maintenance work.
1. Undo the two fastening screws of the main circuit breaker (Q1) cover.
2. Open the cover.
3. Open the cover of the red push button.
4. Push the red push button (“Push OFF”).
5. Close both covers in front of the push buttons.
6. Lock the covers with a padlock. Put the key(s) in a safe place.
7. Make sure that the OPEN/CLOSED indicator shows OPEN.
8. Write your name, phone number and the date to the “Do not switch on. Men at work”
warning sign and hang the warning sign on the main circuit breaker.
16 Safety instructions
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