Electrical Safety - Huawei MTS9300A User Manual

MTS9300A Telecom Power (Ooredoo, Indonesia,
MTS9304A-HD2002)
User Manual

1.3 Electrical Safety

Grounding
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AC and DC Power
● The power system is energized by power sources with hazardous voltage. Direct
or indirect contact (through damp objects) with the power sources may result
in electric shock.
● Non-standard and improper operations may result in fire or electric shock.
● Do not connect or disconnect power cables with power on. Transient contact
between the core of the power cable and the conductor will generate electric
arcs or sparks, which may cause fire or personal injury.
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Issue 06 (2021-10-13)
NO TE
● Professionals: personnel who are trained or experienced in equipment operations and
are clear of the sources and degree of various potential hazards in equipment
installation, operation, maintenance
● Trained personnel: personnel who are technically trained, have required experience, are
aware of possible hazards on themselves in certain operations, and are able to take
protective measures to minimize the hazards on themselves and other people
● Operators: operation personnel who may come in contact with the equipment, except
trained personnel and professionals
The protective ground of the equipment should be reliably connected to the
ground screw on the metal enclosure (grounding resistance ≤ 0.1 ohm).
For the equipment that needs to be grounded, install the ground cable first
when installing the equipment and remove the ground cable last when
removing the equipment.
Do not damage the ground conductor.
Do not operate the equipment in the absence of a properly installed ground
conductor.
For the equipment that uses a three-pin socket, ensure that the ground
terminal in the socket is connected to the protection ground.
D ANGER
If the power supply to the equipment is permanently connected, install an
easily accessible disconnector at the exterior of the device.
Before making electrical connections, switch off the disconnector on the
upstream device to cut off the power supply if people may contact energized
components.
If a "high electricity leakage" tag is attached on the equipment, ground the
protective ground terminal on the equipment enclosure before connecting the
AC power supply; otherwise, electric shock as a result of electricity leakage
may occur.
Before installing or removing a power cable, turn off the power switch.
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1 Safety Precautions
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