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  • Yakub Ansari

What is kVA in generators? this answer will AMAZE you

Updated: Feb 25


name plate of 380kVA generator
name plate of 380kVA generator

The above picture shows the nameplate of a 304kW generator. Here, the kVA [that is 380kVA] rating of the generator is also marked.


kV rating is one of the most important parameters of a generator, it helps to avoid any overloading due to the poor power factor. But it’s hard to understand the real meaning of kVA, here in this blog I will try to explain to you the importance of the kVA rating in generators.


Before diving into the briefing of kVA rating of generator you must understand the basics of electrical power.

Real Power, Reactive power and Apparent power
Real Power, Reactive power and Apparent power

Due to reactance load, an AC power system poses three types of electrical power that is

  • real power/active power (kW)

  • reactive power (kVAr)

  • and apparent power/complex power (kVA)

Real power: It is also known as true power. It is the actual power a load is consumed to do useful work. Real power is symbolized by "kW" and pronounced as kilo-Watt.


Reactive Power: It is also known as imaginary or non-real power. It is the power that is throwback by the load, towards the power source due to reactance in load. It is best described as unused power which flows between load and power source. Reactive power is symbolized by "kVAr".


Apparent Power: It is also known as complex power. It is described as the combination of active and reactive power. And it is also described as RMS of voltage and current. Apparent power is symbolized by "kVA".


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