Huawei PowerCube 5000 - Parts Replacement for the Lithium Battery Cabinet; Replacing an ESM; Replacing a BCU

PowerCube 5000
User Manual (SmartLi 100Ah)
9 Parts Replacement
Issue 02 (2020-03-17)
Copyright © Huawei Technologies Co., Ltd.
141
9.2 Parts Replacement for the Lithium Battery Cabinet
9.2.1 Replacing an ESM
Prerequisites

An insulated socket wrench, insulation gloves, Phillips screwdriver, and cabinet door key
are available.

The new ESM is intact.

The batteries are not discharging.
Before the replacement, ensure that the services are not affected or obtain written consent
from the customer.
Procedure
Step 1 Turn off the battery breaker QF1 and BCU power switch QS1.
Step 2 Remove the cables from the faulty ESM.
Step 3 Remove the terminal covers from the faulty ESM and the upper and lower ESMs.
If the faulty ESM is at the top or bottom layer, remove the front covers from the faulty ESM and the
ESM below or above the faulty one.
Step 4 Install an auxiliary support at the position where the ESM is to be replaced.
Step 5 Remove the faulty ESM, install the new ESM, and secure it. Remove the auxiliary support.
Step 6 Reinstall the ESM cables and ESM terminal covers.
Step 7 Turn on the battery breaker QF1 and BCU power switch QS1.
----End
9.2.2 Replacing a BCU
Prerequisites

A Phillips screwdriver and cabinet door key are available.

The new BCU is intact.

The batteries are not discharging.