Voltampere (VA)

The product of rms voltage and rms current in an electronic circuit. It is the unit of apparent power in the International System of Units (SI).

1 kVA = 1000 VA VA = Watts (Direct Current)

Generators, transformers and transmission equipment are rated in terms of kVA rather than kW because their losses and heating are determined principally by voltage and current, regardless of power factor.

The cost of AC apparatus is roughly proportional to kVA rating.

See also: Ampere, Apparent Power, SI Units, Volt.

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Subjects: Electrical Engineering Units