Huawei MTS9300A - 1.3 Electrical Safety

1.3 Electrical Safety
Grounding
● 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
rst
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.
AC and DC Power
D ANGER
● 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
re 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
re or personal injury.
● 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
o the disconnector on the
upstream device to cut o 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
o the power switch.
● Before connecting a power cable, check that the label on the power cable is
correct.
● Before connecting the power supply, ensure that cable connections are
correct.
● If the equipment has multiple inputs, disconnect all the inputs before
operating the equipment.
MTS9300A Telecom Power (Claro, Colombia,
MTS9304A-AM10A1)
Installation Guide 1 Safety Precautions
Issue 01 (2021-05-30) Copyright © Huawei Technologies Co., Ltd. 6