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UPS5000-E-125 kVA
User Manual (Integrated UPS 3.0, 02291136)
Grounding
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Cabling
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Issue 01 (2022-09-26)
Ensure that the grounding impedance of the equipment complies with local
electrical standards.
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.
Ensure that the protective ground point of the equipment is reliably
connected to the ground screw of the metal enclosure (ground resistance: ≤
0.1 ohm).
Do not operate the equipment in the absence of a properly installed ground
conductor.
Do not damage the ground conductor.
If high leakage current may occur 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.
When selecting, installing, and routing cables, follow local safety regulations
and rules.
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.
Ensure that all cables are properly connected and insulated, and meet
specifications.
Ensure that the slots and holes for routing cables are free from sharp edges,
and that the positions where cables are routed through pipes or cable holes
are equipped with cushion materials to prevent the cables from being
damaged by sharp edges or burrs.
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.
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 the external conditions (such as the cable layout or ambient temperature)
change, verify the cable usage in accordance with the IEC-60364-5-52 or local
laws and regulations. For example, check that the current-carrying capacity
meets requirements.
When the temperature is low, violent impact or vibration may damage the
plastic cable sheathing. To ensure safety, comply with the following
requirements:
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Cables can be laid or installed only when the temperature is higher than
0°C. Handle cables with caution, especially at a low temperature.
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Cables stored at subzero temperatures must be stored at room
temperature for at least 24 hours before they are laid out.
Do not perform any improper operations, for example, dropping cables
directly from a vehicle. Otherwise, the cable performance may deteriorate due
to cable damage, which affects the current-carrying capacity and temperature
rise.
Copyright © Huawei Digital Power Technologies Co., Ltd.
1 Safety Information
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