Dc Fuse Replacement (Frame R8I And Multiples) - ABB ACS880-107 Hardware Manual

128 Maintenance

DC fuse replacement (frame R8i and multiples)

The DC fuses of frame n×R8i inverter units are located in the upper part of the cubicle.
WARNING! Obey the safety instructions given in Safety instructions for
ACS880 multidrive cabinets and modules (3AUA0000102301 [English]).
If you ignore them, injury or death, or damage to the equipment can
occur.
Note: The illustrations represent a frame 2×R8i inverter cubicle with option +F286 (DC
switch/disconnector). On units without +F286, the DC busbars are oriented differently, but
the procedure is otherwise the same unless noted.
1. Stop the drive and do the steps in section
before you start the work.
2. Remove the shroud (a) in front of the fuses.
3. Loosen the nuts (b) of the blown fuse.
4. Loosen the mounting screws of the top busbar (c) so that you can adjust the gap for
the fuse block.
Without DC switch
c
5. Slide out the fuse block.
a
c
Electrical safety precautions
With DC switch (+F286)
(page 64)
b
b
c