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Kw Calculations
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LukeC
post Dec 31 2007, 04:03 PM
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Could someone please clarify how Volts, Current, Watts and Power Factor are formulated to determine actual kW usage for single and 3 phase motors. I have seen multiple formulas to determine this and am unsure of which to use.

Thanks,
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marke
post Dec 31 2007, 06:10 PM
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Hello LukeC

Welcome to the forum

For single phase, P = V x I x PF
P = watts
V = Volts
I = Amps
PF = power factor

For three phase, P = V x I x rt3 x pf
P = watts
V = volts phase to phase
I = Amps (in one phase)
PF = power factor.

Best regards,


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