Ac And Dc Power Operation Requirements; Cabling Requirements - Huawei PowerCube 500 User Manual

PowerCube 500 (CPS300-N18A1H)
User Manual
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1.3.2 AC and DC Power Operation Requirements

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1.3.3 Cabling Requirements

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Issue 02 (2019-08-30)
For a device that uses a three-pin socket, ensure that the ground terminal in the socket is
connected to the protection ground.
The power system is powered by high-voltage power sources. Direct or indirect contact
(especially through damp objects) with the power sources may result in electric shock.
Non-standard and improper operations may result in fire or electric shocks.
Do not install or remove power cables with power on. Transient contact between the core
of a power cable and a conductor may generate electric arcs or sparks, which may cause
fire or hurt human eyes.
If the power supply to the equipment is permanently connected, install an easily
accessible disconnector at the exterior of the equipment.
Before making electrical connections, switch off the disconnector on the upstream device
to cut the power supply if people may contact energized components.
If a "high electricity leakage" tag is attached on the power terminal of a device, you must
ground the protective ground terminal on the device 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 circuit breaker.
Before connecting a power cable, check that the label on the power cable is correct.
Before connecting the power supply, ensure that electrical connections are correct.
If the equipment has multiple inputs, disconnect all the inputs before operating the
equipment.
When routing cables, ensure that a sufficient distance exists between the cables and
heat-generating components such as power copper bars, shunts, and fuses. This prevents
damage to the insulation layer of the cables.
Separately bind signal cables and power cables.
Ensure that all cables meet the VW-1 test requirements.
Do not route cables behind the air exhaust vents of rectifiers in a cabinet.
Securely bind all cables.
If AC input power cables need to be routed from the top, bend the cables in the U shape
outside the cabinet and then route them into the cabinet.
Ensure that cables are more than 20 mm away from heat sources to prevent damage
(melting, aging, or breakage) to the cable insulation layer.
Ensure that the bending radius of each cable is at least five times the diameter of the
cable.
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.
Route and bind cables so that they appear neat and tidy and their cable sheaths are intact.
Route and bind ground cables and signal cables separately.
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1 Safety Precautions
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