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5
Electrical Connection
5.1 Precautions
High voltage! Electric shock!
• It is strictly forbidden to directly touch the live parts in the unprotected state!
• Before installation, ensure that the all switches are off.
Sand and moisture penetration may damage the electrical equipment in the BESS,
or affect their operating performance!
• Avoid electrical connections during sandstorms or when the relative humidity
in the surrounding environment is greater than 95%.
• Perform electrical connection when there is no sandstorm and the weather is
fair and dry.
• Before wiring, check and ensure that the polarity of all input cables is correct.
• During electrical installation, do not forcibly pull any wires or cables, as this
may compromise the insulation performance.
• Ensure that all cables and wires have sufficient space for any bends.
• Adopt the necessary auxiliary measures to reduce the stress applied to cables
and wires.
• After completing each connection, carefully check and ensure that the
connection is correct and secure.
When an external short circuit occurs in the RACK circuit and the switch box fuse
produces a protective action, the fuse and the two DC contactors must be replaced
at the same time.
5.2 Electrical Connection Overview
The wiring diagram of the ESS is shown in the figure below:
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