1.3 Electrical Safety
General Requirements
● Installation, operation, and maintenance must be performed in the sequence
specied in the manual. Do not change the structure or installation sequence
of the equipment without permission.
● When installing the equipment, use a torque wrench with a proper range to
tighten the screws. When using a wrench to tighten the screws, ensure that
the wrench does not tilt and the torque error does not exceed 10% of the
specied value.
● Before installing or removing power cables, ensure that the switch is turned
o.
● If the equipment has multiple inputs, disconnect all the inputs before
operating the equipment.
● Before connecting power cables, check that cable labels are correct and cable
terminals are insulated.
● A circuit breaker equipped with a residual current device (RCD) is not
recommended.
● It is recommended that the three-phase loads be equalized and the neutral-
ground voltage be kept at less than 2 V to meet power distribution
requirements.
● 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.
Grounding
● For the equipment that needs to be grounded, install the ground cable
rst
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.
UPS2000-G-6KRTLL
User Manual 1 Safety Information
Issue 02 (2022-06-30) Copyright © Huawei Technologies Co., Ltd. 8
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