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How to calculate kVA?

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#1 toprange


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Posted 01 August 2004 - 03:22 PM

Any one can tell me how does Utility to calculate kVA in a factory? kWhr is based how many hours you are using the electricity, but What's the factor to affact the calaculation of kVA?

#2 marke


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Posted 01 August 2004 - 07:09 PM

Hello toprange
KWhr is measured by the use of a rotating disk KWHr meter (or an electronic equivilent). This responds to KW drawn from the supply and accumulates this.
KVA is measured by a peak reading ameter that has a slow response. This meter is generally refered to as a MDI or a Maximum Demand Indicator.
The KVA is the maximum current times the phase voltage times root three.

Best regards,

#3 Guest__*

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Posted 10 August 2004 - 10:40 AM


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