WAZIPOINT Engineering Science & Technology: Regulation of a Transformer is Helpful for Systems?

## What is the Regulation of a Transformer?

The regulation of the transformer menses the voltage regulation of a transformer.

So, the voltage regulation of a transformer may define as a transformer voltage regulation is the percentage change of the output voltage from no-load to full-load.

Please remember that since the power factor is a determining factor in the secondary voltage, so power factor influences the voltage regulation of the transformer.

So for example, if a single-phase transformer has an open-circuit no-load terminal voltage is 100 volts and the same terminal voltage drops to 95 volts due to the power factor on the application of a connected load, the transformers voltage regulation would therefore be 0.05

or 5%, ((100 – 95)/100)*100%).

### Formula to Calculate the Transformer Voltage Regulation

Voltage regulation is mainly calculated in the percentage of no-load and full-load values-

Please be in mind in practical a transformer, the value of the secondary terminal voltage at no load is always greater than the secondary terminal voltage at full load.

Line regulation is another measure of voltage regulation.

If you are interested to know the details of voltage regulation, let's scroll the below theory of transformer voltage regulation:

You may know the details about the electrical transformer from the following articles:

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