Huawei UPS5000-E-60K-F60 User Manual page 21

UPS5000-E-(60 kVA-160 kVA)
User Manual (Low Voltage)
●
●
●
●
●
●
●
●
●
●
●
●
●
Grounding
●
●
●
Issue 05 (2024-01-30)
When installing the equipment, use a torque tool of a proper measurement
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 specified value.
Ensure that bolts are tightened with a torque tool and marked in red and blue
after double-check. Installation personnel mark tightened bolts in blue.
Quality inspection personnel confirm that the bolts are tightened and then
mark them in red. (The marks must cross the edges of the bolts.)
After the installation is complete, ensure that protective cases, insulation
tubes, and other necessary items for all electrical components are in position
to avoid electric shocks.
If the equipment has multiple inputs, disconnect all the inputs before
operating the equipment.
Before maintaining a downstream electrical or power distribution device, turn
off the output switch on the power supply equipment.
During equipment maintenance, attach "Do not switch on" labels near the
upstream and downstream switches or circuit breakers as well as warning
signs to prevent accidental connection. The equipment can be powered on
only after troubleshooting is complete.
If fault diagnosis and troubleshooting need to be performed after power-off,
take the following safety measures: Disconnect the power supply. Check
whether the equipment is live. Install a ground cable. Hang warning signs and
set up fences.
Check equipment connections periodically, ensuring that all screws are
securely tightened.
Only qualified professionals can replace a damaged cable.
Do not scrawl, damage, or block any labels or nameplates on the equipment.
Promptly replace labels that have worn out.
Do not use solvents such as water, alcohol, or oil to clean electrical
components inside or outside of the equipment.
Wear personal protective equipment and use dedicated insulated tools to
avoid electric shocks or short circuits.
Do not use wet cloth to clean exposed copper bars or other conductive parts.
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 (connection resistance:
≤ 0.1 ohms).
Copyright © Huawei Digital Power Technologies Co., Ltd.
1 Safety Information
13