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4
votes
2answers
918 views

Does unbalanced load on three-phase UPS use more power and cost more?

We have a three-phase online data center UPS. Someone said recently that if the input amperage across the phases were 70-10-10 we'd pay for the kWh represented by 70 amps, but if the same load were ...
14
votes
3answers
3k views

How does a 3-Phase UPS distribute power?

We've got 2 UPSes in our server room. One's 3 phase, and has a 3phase supply, yet the APC network stats thing only says Incoming Voltage: 230.1 Volts The other is a single phase one with no ...