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Replacing the resistor fuses
￭
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.
Repeat the steps described in section
before you start the work.
2.
Open the cubicle door.
3.
Undo the locking screws and open the swing-out frame or remove the shrouding.
4.
Check the condition of the fuses. In case of a blown fuse, replace all fuses with
similar fuses.
5.
Slacken the nuts of the headless screws of the fuses, and slide out the fuse blocks.
6.
Make note of the order of the washers on the screws.
7.
Remove the screws, nuts and washers from the old fuses and attach them to the
new fuses. Make sure to keep the washers in the original order.
8.
Insert the new fuses into their slots in the cubicle. Pre-tighten the nuts of the new
fuses first by hand or by applying a torque of no more than 5 N·m (3.7 lbf·ft).
9.
Tighten the nuts to torque as follows:
•
Cooper-Bussmann fuses: 50 N·m (37 lbf·ft)
•
Mersen (Ferraz-Shawmut): 46 N·m (34 lbf·ft)
•
Other: Refer to the fuse manufacturer's instructions
10. Close the swing-out frame, attach the shrouding (if any) and close the door.
ACS880 liquid-cooled multidrive
Electrical safety precautions (page 35)
Maintenance 87
[English]).
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