FusionModule800 Smart Small Data Center
Maintenance Guide
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5.2.12 Replacing a Battery Switch Auxiliary Contact
Prerequisites
The battery switch of the battery cabinet must be disconnected. When there are multiple
battery strings connected in parallel, all battery switches need to be disconnected. Ensure that
all battery switches are disconnected during replacement.
Tools: electroprobe, insulation gloves, Phillips screwdriver, multimeter.
Materials: A spare battery switch auxiliary contact of the same model is available and
functional.
The battery switch auxiliary contact is damaged or faulty and cannot work.
The figures are for reference only. The actual product appearance prevails.
Procedure
Step 1 Determine the position of the faulty battery switch auxiliary contact, and open the
corresponding cabinet door.
Step 2 Remove the front panel of the battery cabinet circuit breaker using a Phillips screwdriver, as
shown in Figure 5-18.
Step 3 Switch a multimeter to the DC voltage mode to measure the voltage between positive and
negative copper bars at the upper part of the battery switch. If the voltage is lower than 36 V
DC for 1 minute, replace the battery switch auxiliary contact.
Step 4 Remove the panel from the MCCB.
Step 5 See Step 5 to remove the MCCB cover.
Step 6 Remove the two signal cables that are located in the right fitting subrack inside the switch and
one screw from the battery switch auxiliary contact. Remove the faulty battery switch
auxiliary contact.
When removing cables, label the cables with corresponding terminal ports for later connection.
Step 7 Install the new battery switch auxiliary contact by referring to the preceding method. Connect
cables and tighten screws.
Step 8 Reinstall the removed components, and close the corresponding cabinet door.
----End
5.2.13 Replacing a Battery MCCB
Prerequisites
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