ABB ACS880-07, Hardware Manual

Page: 171 / 274

Fuses
￭ Replacing the AC and DC fuses in cabinet
This procedure instructs how to replace the drive AC and DC fuses inside the cabinet. The
location of the fuses vary depending on the drive type and options. Locate the fuses to be
replaced using the delivery-specific layout drawings and circuit diagrams.
Note: ACS880-07 AC fuse locationsACS880-07 AC fuse locations
The drive can have several sets of AC fuses in different locations.
Location of AC fuses Frame size
6-pulse connection
Incoming cubicle (ICU) 1×D8T + 2×R8i
Supply module cubicle. Also incoming cubicle (ICU) when equipped with main
contactor. 2×D8T + 2×R8i
2×D8T + 3×R8i
Supply module cubicle. 3×D8T + 3×R8i
12-pulse connection (A004)
Incoming cubicle (ICU)
2×D7T + 2×R8i
2×D8T + 2×R8i
2×D8T + 3×R8i
Supply module cubicles. Also incoming cubicles (ICU) when equipped with main
contactor.
4×D8T + 3×R8i
4×D8T + 4×R8i
4×D8T + 5×R8i
WARNING!
Obey the instructions in chapter Safety instructions. If you ignore them,
injury or death, or damage to the equipment can occur.
1. Stop the drive and do the steps in section Electrical safety precautions (page 19) before
you start the work.
2. Open the door of the cubicle in which the fuses are.
3. Remove the shrouding from in front of the fuses.
4. Slacken the nuts of the headless screws of the fuses so that you can slide out the fuse
blocks. Make note of the order of the washers on the screws.
5. 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.
6. Insert the new fuses into their slots in the cubicle. Pre-tighten the nuts first by hand or
by applying a torque of no more than 5 N·m (3.7 lbf·ft).
7. 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.
Maintenance 171