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4.1.8. Mode 1-3(dual source)
1. Input: connect the main ground cable (PE) to the chassis first
2. Bridge the ‘UPS input terminal N/N’ with ‘busbar #1’, then connect the
AC main source cable (N) and bypass source cable (N) with the lugs on
top of each other
3. Bridge the ‘UPS input terminal L1/L2/L3’ with ‘busbar #2’, then connect
the main source cable (L)
4. Connect ‘UPS bypass terminal L1’ to bypass source cable(L)
5. Output: connect ground cable (PE) to chassis first
6. Short ‘UPS output terminal N/N’ with ‘busbar #1’, then connect AC
cable(N)
7. Connect ‘UPS output terminal L1/L2/L3’ to AC cable(L1/L2/L3)
In this configuration, bypass is not available. UPS needs to be derated to
60% of it’s capacity. Harmonics distortion specs will be higher than the
published specification data.
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