A computational tool enabling the determination of the apparent power (kVA) equivalent to a given real power (kW) value, typically utilizing a power factor as a critical input. For example, if a system consumes 100 kW of real power with a power factor of 0.8, the corresponding apparent power would be 125 kVA.
This calculation is essential for electrical system design and capacity planning. Underestimating kVA requirements can lead to overloaded transformers and generators, resulting in inefficiency and potential equipment failure. Historically, manual calculations were common, but modern calculators streamline the process, reducing errors and saving time for electrical engineers and technicians.