Huawei FusionModule2000 Maintenance Manual page 11

FusionModule2000 Smart Modular Data Center
Maintenance Guide
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Grounding
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Cabling
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Issue 02 (2022-07-30)
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits
to telecommunication network voltage (TNV) circuits.
A damaged cable must be replaced by the manufacturer or professionals to
avoid risks.
Check equipment connections periodically, ensuring that all screws are
securely tightened.
Do not use water to clean electrical components inside or outside of a
cabinet.
Do not scrawl, damage, or block any labels or nameplates on the equipment.
Promptly replace warning labels that have worn out.
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.
Ensure that the equipment is connected permanently to the protective
ground. Before operating the equipment, check its electrical connection to
ensure that it is reliably grounded.
If a "high electricity leakage" tag is attached on the equipment, ground the
protective ground terminal on the equipment enclosure before connecting the
AC input power supply; otherwise, electric shock as a result of electricity
leakage may occur.
Do not operate the equipment in the absence of a properly installed ground
conductor.
Do not damage the ground conductor.
When selecting, connecting, and routing cables, follow local safety regulations
and rules.
The flame spread rating of cables should meet the UL 1581 VW-1 or IEC
60332-3-22 (ZB) or higher requirements.
Do not route cables behind the air intake or exhaust vents of the equipment.
If a 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.
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, 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.
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.
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