Electrical Safety - Huawei JUPITER-3000K-H1 User Manual

JUPITER-(3000K, 6000K, 9000K)-H1 Smart
Transformer Station
User Manual

1.5 Electrical Safety

Cabling
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Grounding
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Safety Requirements in Maintenance and Repair
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2.
Issue Draft A
(2022-09-07)
Do not perform any improper operations, for example, dropping cables
directly from a vehicle.
Do not route cables through air intake or exhaust vents of the equipment.
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.
When routing cables, reserve at least 30 mm clearance between the cables
and heat-generating components or areas. This prevents deterioration or
damage to the cable insulation layer.
Select cables that comply with local laws and regulations.
The positions where cables are routed through pipes or holes must be
protected to prevent the cables from being cut by sharp edges.
Ensure that the cables are properly connected and insulated, and meet
specifications.
After connecting medium-voltage and low-voltage cables, secure them using
cable supports and cable clips. Ensure that the cables in the backfill area are
in close contact with the ground to prevent cable deformation or damage
during backfilling.
When the temperature is low, violent impact or vibration may damage the
plastic cable sheathing. To ensure safety, comply with the following
requirements:
– Cables can be laid or installed only when the temperature is higher than
0°C. Handle cables with caution, especially at a low temperature.
– Cables stored at subzero temperatures must be stored at room
temperature for at least 24 hours before they are laid out.
Do not damage the ground conductor.
Do not work on the equipment in the absence of a properly installed ground
conductor.
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.
The main grounding body of the equipment must be permanently connected
to the grounding grid. Before working on the equipment, check its electrical
connections to ensure that it is reliably grounded.
Before connecting or removing cables, turn off the protection switch of the
corresponding loop.
Place a warning sign indicating that the switch must not be turned on at the
position where the switch resides.
Copyright © Huawei Technologies Co., Ltd.
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