DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
1 Safety Precautions
Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
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The preceding figure is for reference only.
When moving the equipment by hand, wear protective gloves to prevent injuries.
Move or lift the equipment by holding its handles or lower edges. Do not hold the
handles of modules (such as power supply units, fans, and boards) that are installed in
the equipment because they cannot support the weight of the equipment.
1.6 Battery Safety
If no battery is involved, skip this section.
Before installing, operating, or maintaining batteries, read the battery manufacturer's
instructions. The safety precautions specified in this document are highly important
precautions that require special attention. For additional safety precautions, see the
instructions provided by the battery manufacturer.
Basic Requirements
Before operating batteries, carefully read the safety precautions for battery handling and
master the correct battery connection methods.
Do not expose batteries at high temperatures or around heat-generating devices, such as
sunlight, fire sources, transformers, and heaters. Excessive heat exposure may cause the
batteries to explode.
Do not burn batteries. Otherwise, the batteries may explode.
To avoid leakage, overheating, fire, or explosions, do not disassemble, alter, or damage
batteries, for example, insert sundries into batteries or immerse batteries in water or other
liquids.
When replacing a battery, use a battery of the same model or type. Improper replacement
may cause the battery to explode.
Do not connect a metal conductor to the battery poles or touch the battery terminals.
Otherwise, the battery may be short-circuited and heat up, which can cause injuries such as
burning.
To ensure safety during battery installation, operation, and maintenance, pay attention to the
following:
Do not wear conductive articles such as watches, bracelets, bangles, and rings.
Wear goggles, rubber gloves, and protective clothing to prevent skin contact with
electrolyte in the case of electrolyte overflow. If a battery leaks, protect the skin or eyes
from the leaking liquid. If the skin or eyes come in contact with the leaking liquid, wash
it immediately with clean water and go to the hospital for medical treatment.
Use dedicated insulated tools.
Move batteries in the required direction. Do not place a battery upside down or tilt it.
Keep the battery loop disconnected during installation and maintenance.
