Fuse Replacement (Box Bay); Figure 50 - Mbs Fuse Locations - Alpha Technologies AMPS HP2 Power System Installation & Operation Manual

8.5 Fuse Replacement (Box Bay)

These fuses are sized to blow only if there is a short on the bypass line. These fuses must be replaced by a quali-
fied service person.
1. Put critical loads on External Bypass, refer to 8.4.1.
WARNING!
There may still be live parts inside the system and shock hazards may be present
throughout this procedure.
2. Remove all AC and DC power sources from the AMPS HP2 UPS.
3. Remove the AC wiring panel.
4. Remove the 3/8-16 nuts securing the fuse to the bus bars. Use a 9/16" socket to remove the nut and a 9/16"
wrench to keep the bolt from turning.
5. Replace fuse and re-install hardware. Torque to 30 ft.-lbs.
CAUTION!
Risk of electric shock and fire hazard. Replace fuse with same type and same rating.
6. Replace the fuse with a fuse of the same rating and type:
Alpha part number
4600113
7. Put critical loads on UPS, refer to 8.4.2.
78
Replaceable parts
Description
400A, 300V ClassT Fuse
Figure 50 — MBS fuse locations
0260080-J0 Rev D