Dictionary of Electrical Engineering

Commonly used terms in the Electrical industry.

fault kva
fault kilovolt-amps (kva) is the fault level expressed in terms of volt-amps rather than amps. One advantage of using volt-amps rather than amps is that the same flow is experienced on both sides of a transformer when expressed in volt-amps, while the flow changes due to the transformer turns ratio when it is expressed in amps. Volt-amps for a three-phase fault are expressed as 1.73 x rms line-line voltage x rms symmetrical fault current. Volt-amps for a single phase fault are defined as 1.73 x rms line-line voltage x rms symmetrical current in the faulted phase.
kilovolt-ampere (KVA)
a measure of apparent power, often in the rating of a piece of equipment or the measure of an electrical load, which is obtained by multiplying the device voltage in kilovolts by the current in amperes.

See kilovolt-ampere