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Fuses
￭
Replacing the supply unit AC fuses
WARNING!
Read the safety instructions given in Safety instructions for ACS880
liquid-cooled multidrive cabinets and modules (3AXD50000048633
[English]). If you ignore them, injury or death, or damage to the equipment
can occur.
WARNING!
Wear protective gloves and long sleeves. Some parts have sharp edges.
1. Repeat the steps described in section
you start the work.
2. Open the door of the LCL filter cubicle.
3. Remove the shrouding in front of the fuses (if any).
4. 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 cubicle. Tighten the nuts first by hand or applying
maximum 5 N·m force. Tightening torques for M12 nuts are 50 N·m (37 lbf·ft) for Cooper
Bussmann fuses, and 46 N·m (34 lbf·ft) for Mersen (Ferraz-Shawmut) fuses.
5. Attach the shrouding (if any) and close the door.
Electrical safety precautions (page 35)
Maintenance 73
before
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