Checking And Replacing The Ac Fuses (Limited Scope Version) - ABB ACS880-207 Hardware Manual

110 Maintenance

Checking and replacing the AC fuses (limited scope version)

￭
WARNING!
Only qualified electricians are allowed to this work. Read the complete safety
instructions of the drive. Ignoring the instructions can cause physical injury or
death, or damage to the equipment.
1. Disconnect the drive from the AC power line and make sure it is safe to start the work.
See section Electrical safety precautions (page
2. Undo the screws of the shroud in the upper part of the cubicle. Lift and remove the
shroud.
3. Check the condition of the fuses. In case of a blown fuse, replace all fuses with similar
fuses: slacken the nuts of the fuses and pull the fuses out. Do not unscrew the nuts
completely, not to drop them inside the module below. Tighten the nuts first by hand or
applying maximum 5 N·m force. Tightening torques for nuts are:
Nut
M12
4. Attach the shroud and close the door.
4
3
46).
Cooper Bussmann fuses
50 N·m
6
Mersen (Ferraz-Shawmut) fuses
46 N·m
5