Per cent voltage regulation calculator

Use the following calculator to calculate voltage regulation of a transformer. Enter Vno-load and Vfull-load and click on calculate button

Enter No-Load Voltage

Enter Full-Load Voltage

Voltage regulation

Read more: Voltage regulation of transformer

Definition of voltage regulation of a transformer

Voltage regulation of a transformer can be defined as the change in the magnitude of the secondary voltage of a transformer when the load changes from full load to no-load, assuming a constant primary voltage.

Formula for Voltage regulation

Where,

  • Vno-load is the no-load voltage measured across the secondary terminals
  • Vfull-load is the voltage measured across the secondary terminal at full load.

Per cent voltage regulation

Normally, voltage regulation is expressed as either per – unit or percentage of load voltage

Percentage voltage regulation formula
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