A kVA (Kilovolt-amps) is simply 1,000-volt ampere. A volt is an electrical pressure, where an ampere or amperage is an electrical current. The current flows in a single phase, two phase, and three phases. In single phase, the current 'I' in amperage is approximately equal to 1000 times the apparent power 'S' in Kilovolt-amps, divided by the voltage 'V' in volts. Here given an kVA to Amps Calculator to convert Kilovolt-amps to Ampere in a single phase transformer.
Convert 250 kVA to Amps with voltage of 500 V.
A = 1000 x (a / b)
A = 1000 x (250 /500)
= 500 A