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JUPITER-(3000K, 6000K, 9000K)-H1 Smart
Transformer Station
User Manual
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Grounding
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Cabling Requirements
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Issue 02 (2023-09-30)
When the transformer is running with power on, do not operate the no-load
voltage regulating switch, do not remove the high/low-voltage tubes, and do
not connect cables or copper bars.
After the equipment stops running, wait for at least 10 minutes to ensure that
the voltage is in the safe range. Before maintenance or repair, ensure that the
transfer switch is turned to the ground position, the potential indicator is off,
the grounding switch of cabinet V in the ring main unit is turned on, and the
low-voltage cabinet is grounded.
During maintenance, turn off the air circuit breaker on the low-voltage side
and the switch on the high-voltage side of the equipment, and place warning
signs indicating that the switches must not be turned on. If the equipment
supports the automatic mode, disable the automatic mode to ensure that the
equipment will not be powered on unexpectedly.
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.
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.
Do not work on the equipment in the absence of a properly installed ground
conductor.
Do not damage the ground conductor.
For the equipment that uses a three-pin socket, ensure that the ground
terminal in the socket is connected to the protective ground point.
When selecting, installing, and routing cables, follow local safety regulations
and rules.
Copyright © Huawei Technologies Co., Ltd.
1 Safety Information
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