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94 Maintenance
Replacing AC fuses - 100 kA input cubicle (option +F274)
￭
WARNING!
Obey the safety instructions given in
cabinets and modules safety instructions (3AXD50000048633
If you ignore the safety instructions, injury or death, or damage to the
equipment can occur.
If you are not a qualified electrical professional, do not do installation
or maintenance work.
WARNING!
Use the required personal protective equipment. Wear protective gloves and
long sleeves. Some parts have sharp edges.
1.
Stop the drive and do the steps in section
before you start the work.
2.
Open the door of the 100 kA input cubicle.
3.
Remove the shrouding in front of the fuses.
4.
Check the condition of the fuses. If a fuse is blown, replace all fuses with similar
fuses as follows:
•
Loosen the nuts of the fuses and pull the fuses out. Do not remove the nuts
completely. If you remove the nuts completely, there is a risk that they fall
inside the cubicle.
•
Install the new fuses. 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
Bussmann fuses, and 46 N·m (34 lbf·ft) for Mersen (Ferraz-Shawmut) fuses.
5.
Attach the shrouding and close the door.
ACS880 liquid-cooled multidrive
Electrical safety precautions (page 43)
[English]).
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