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UPSJZ-T-(1 kVA–3 kVA)
User Manual
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Grounding
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Cabling
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2022-08-15
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits
to telecommunication network voltage (TNV) circuits.
If the equipment has multiple inputs, disconnect all the inputs before
operating the equipment.
Before maintaining a downstream electrical device supply or power
distribution device, turn off the output switch of its 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.
Before fault diagnosis and troubleshooting, take the following safety
measures: Disconnect the power supply > Measure the power > Install a
ground cable > Hang warning signs and set up fences
Check equipment connections periodically, ensuring that all screws are
securely tightened.
A damaged cable must be replaced by the manufacturer or professionals to
avoid risks.
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.
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.
1 Safety Information
12
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