Energy Consumption Calculation

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Anonymous Poster	Energy Consumption Calculation 05/09/2010 4:23 PM
	how do i calculate energy consumption for officers club drawing 3phase current measuerde like thise:phase A30AMPS,Phase B25AMPS,Phase C20AMPS Voltage,400V ,PF0.8
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Tornado Guru Join Date: May 2009 Location: Richland, WA, USA Posts: 21017 Good Answers: 795	#1 Re: energy consumtion 05/09/2010 5:13 PM
	(30+25+20)(1/√3)(400)(0.8) ≈ 13.86 kw; then times how many hours to get kwh. (Owing to the current imbalances, the voltages may also be slightly unequal, so this is not absolutely precise. I would just call it 14 kw. At 0.8 PF, this would correlate to 17.5 kva.) __________________ In vino veritas; in cervisia carmen; in aqua E. coli.
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Anonymous Poster	#2 Re: Energy Consumption Calculation 05/10/2010 5:06 AM
	The currents (and the voltages) that you measure are instantaneous. We can at the best give you the power consumption, corresponding to the values (that also under the instantaneous power factor, that you have given). In case you want the energy consumption, it is ∫V.I dt = ∫V I CosΦ dt To know the energy consumption (over a time period) you don't have any other choice than putting an energymeter in line. All others are approximate, since definitely when the club is non-functional, the current are not as you mentioned?
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