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It is common to see each of the examples used. However the technically correct way is kVA.

Answer

Following the conventions of SI for compound units, a dot should be placed between the 'V' and the 'A', above base level: that is: kV.A

The symbols for units named in honour of individuals are always capitalised, so the symbol for volt is 'V', and the symbol for ampere is 'A'.

Having said that, the symbol generally used for reactive volt amperes is var. So I suppose one could argue as neither the volt ampere or reactive volt ampere are really SI units, then they don't really have to follow SI conventions!

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12y ago

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