Replacing A Quick Connector (Psu) - Huawei DPU40D-N06A3 User Manual

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
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The PSU and lithium battery can be mounted on a small or large pole, wall, channel steel, or
angle steel.
The following figure shows the mounting kits.
Figure 5-1 Mounting kits
(1) Small-pole installation kit
(4) Hanging kit

5.3.1 Replacing a Quick Connector (PSU)

Prerequisites
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Procedure
Step 1 Put on the protective gloves.
Step 2 Switch off the upstream input circuit breaker for the PSU.
Step 3 Remove the old quick connector.
1.
Issue 04 (2020-02-29)
Replacing a main component requires power disconnection from certain loads. Obtain the
customer's consent before doing so. Take measures to avoid power disconnection for
primary loads. For example, switch primary loads to a proper PSU.
Do not uncover the PSU because high voltage exists inside it. Send a faulty PSU to the
maintenance office where professionals will repair it.
Do not connect or disconnect the quick connectors of the PSU and lithium battery with
power on. Do not contact any port inside by bare hand.
To replace a PSU, switch off the upstream input circuit breaker.
After replacing a module, use the quick connectors on the new module to prepare cables.
For details, see 5.3.1 Replacing a Quick Connector (PSU) and 5.3.2 Replacing a Quick
Connector (Lithium Battery).
You have obtained a pair of protective gloves and a flat-head screwdriver.
You have prepared a new quick connector.
Record the cable connection position on the old PSU.
Copyright © Huawei Technologies Co., Ltd.
(2) Large-pole installation kit
(5) Attachment kit
5 Maintenance
(3) Connecting kit
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