TP482000B V300R002C03 Telecom Power
(TP482000B-N20B1, TP482000B-N20B2,
TP481200B-N20B1, and TP481200B-N20B2)
User Manual
1 Safety Precautions
Issue 07 (2020-04-10)
Copyright © Huawei Technologies Co., Ltd.
6
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.
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.
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.
Cabling
When routing cables, ensure that a distance of at least 30 mm exists between the cables
and heat-generating components or areas. This prevents damage to the insulation layer of
the cables.
Do not route cables behind the air intake and exhaust vents of the equipment.
Ensure that cables meet the VW-1 flame spread rating requirements.
Bind cables of the same type together. When routing cables of different types, ensure that
they are at least 30 mm away from each other.
Ensure that all cables are securely bound. Route and bind cables so that they appear neat
and tidy and their cable sheaths are intact.
If an AC input power cable is connected to the cabinet from the top, bend the cable in a
U shape outside the cabinet and then route it into the cabinet.
Ensure that the bending radius of each cable is at least five times the diameter of the
cable.
When routing power cables, ensure that there is no coiling or twisting. Do not join or
weld power cables. If necessary, use a longer cable.
ESD
When installing, operating, and maintaining the equipment, comply with the ESD
protection regulations and wear the ESD clothing, gloves, and wrist strap.
When holding a board, hold its edge without touching any components. Do not touch the
components with your bare hands.
Package boards with ESD packaging materials before storing or transporting them.
