Off Load Voltage Calculator

The Off-load voltage calculator is a simple utility which allows the off load voltage of the transformer to be calculated, based on information provided by the transformer manufacturer.

The following manufacturers information is required:

  • Nominal RMS output voltage
  • Nominal RMS output current
  • Regulation

From this the off-load voltage and source impedance of the transformer can be calculated.

The formula used for calculating the off-load voltage is:

Equation 1

In the above, Vol is the off-load voltage, Vnom is the nominal voltage, and Reg% is the declared regulation in percent. The formula used for calculating the source impedance is:

Equation 1a

Where Zsrc is the source impedance, Vol is the off-load voltage, Vnom is the nominal voltage, and Inom is the nominal current.

       
      Page last updated 13-February-2017 13:02