Replacing A Dc Fuse - Huawei DPU40D-N06A3 User Manual

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
8.
Step 4 Install the new lithium battery.
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Step 5 Switch on the upstream input circuit breaker for the PSU.
Step 6 Take off the protective gloves.
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Follow-up Procedure
Pack the removed component and return it to the local Huawei warehouse.

5.3.8 Replacing a DC Fuse

Prerequisites
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Context
DC fuses are located inside the load wiring terminals, as shown in the following figure.
Issue 04 (2020-02-29)
Loosen the four screws that secure the lithium battery and connecting kit, and take off
the connecting kit.
Loosen the four screws on the hanging kit behind the new lithium battery, take off the
hanging kit, install it on the right side of the lithium battery, and tighten the four screws.
Install the connecting kit onto the right side of the new lithium battery and tighten the
four screws.
Install the new lithium battery and tighten the screws on the hanging kit.
Install the PSU onto the connecting kit on the right side of the new lithium battery and
tighten the four screws.
Install the connecting kit.
Connect the ground cable as well as the cables to the COM and BAT ports on the lithium
battery in sequence based on the recorded information.
Connect the cables to the PSU. Connect the ground cable as well as the cables to the
COM, BAT, LOAD, and PWR ports in sequence based on the recorded information.
Use waterproof tape to seal the cable connections.
You have prepared a pair of protective gloves, Phillips screwdriver, and flat-head
screwdriver.
You have prepared a new fuse whose model information and specifications are the same
as the old one.
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