Huawei DPU40D-N06A3 User Manual page 18

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
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Battery Installation
Before installing batteries, observe the following safety precautions:
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Battery Short Circuit
Battery short circuits can generate high instantaneous current and release a great amount of
energy, which may cause equipment damage or personal injury.
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Flammable Gas
Issue 04 (2020-02-29)
Do not drop, squeeze, or puncture a battery. Protect batteries from external high pressure
to prevent internal short circuits and overheating.
Dispose of waste batteries in accordance with local laws and regulations. Do not dispose
of batteries as household waste. If a battery is disposed of improperly, it may explode.
Do not use a damaged battery.
To prevent injuries or explosion, do not allow children or pets to swallow or bite a
battery.
If batteries experience discoloration, deformation, abnormal heating, or other
abnormalities during working, charging, or storage, stop using the batteries and replace
them with new ones.
Batteries can work properly with the allowed charge and discharge parameters when the
temperature is within the specified range. If the temperature is outside the specified
range, the battery charge and discharge performance and safety are affected.
Install batteries in a dry and cool environment with good ventilation, which is away from
high temperature and flammable materials, and take precautions against fire.
Place and secure batteries horizontally.
Note the polarities when installing batteries. Do not short-circuit the positive and
negative poles of the same battery or battery string. Otherwise, the battery may be
short-circuited.
When installing a battery string, retain at least one breakpoint to prevent a loop being
formed. After checking that the installation is correct, close the breakpoints to finish the
installation.
During the installation, insulate the terminals of cables connecting batteries. Ensure that
the terminals do not come into contact with metal components such as the cabinet.
Secure battery cables or copper bars by tightening bolts to the required torque. Loose
connections will result in excessive voltage drop or cause batteries to burn out in the case
of excessive current.
Check battery connections periodically, ensuring that all bolts are securely tightened.
If permitted, disconnect the batteries in use before performing any other operations.
To avoid battery short-circuit, do not maintain batteries with power on.
Copyright © Huawei Technologies Co., Ltd.
1 Safety Precautions
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