Voltampere

The volt-ampere with the symbol 'VA is a legal unit of measurement for electrical apparent power S. You (as AC motors ) or transformers used in AC variables ( AC voltage, AC current, also three-phase alternating current) in electrical power engineering to identify the connected load of electrical machines.

The watt is a general measure of the physical size of power. As special units volt-amperes for electrical apparent power and reactive power for electrical Var be used (DIN 1301, DIN 1304, DIN 40110 ).

The unit of apparent power is associated with SI units in accordance with

As usual with units, resolutions for units are to achieve a manageable number of values ​​used as " kVA " for " kilovolt-amperes " ( = 1000 VA) or " MVA " for " megavolt-amperes " ( = 1 million VA).