kVA is a term for rating electrical devices. A device's kVA rating is equal to its rated output in amperes multiplied by its rated operating voltage. In the case of three-phase generator sets, kVA is the kW ouput rating divided by 0.8, the rated power factor. kVA is the vector sum of the active power (kW) and the reactive power (kVAR) flowing in a circuit.
KVA refers to kilovolt-ampere and is the unit used to express apparent power. This unit of measure for power consumption is used for equipment that is not resistive such as motors, computers, and most non-incandescent lighting.
Unit of electrical power. Power "apparent" described in KVA is not the same as power "tru" expressed in Watts. Power (watts)=Power Factor x power (kVA). The power factor lies between 0 and 1; often 0.8 to 0.9
Kilovolt Amperes, often referred to as the Total Power, it is the sum of working power (KW), and the non-working power (KVAR). Non-working power is the current that is needed to electrify the system to reduce resistance and line loss.