L12-N1: the terminal for Utility Input to provide the power source when the UPS
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is working under Utility mode.
G1: the terminal for UPS Input Ground.
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L21、N22: the terminals for UPS Output.
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G2: the terminal for UPS Output Ground.
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Remarks:
1. The maximum current for each terminal is 30Arms for 6Kva, 50Arms for
10Kva.
2. AC source can be only supplied to UPS from L12-N1 terminal.
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