How To Test Transformer Turns Ratio?

The transformer turn ratio is the ratio of the number of turns in the primary winding to the number of turns in the secondary winding. It is an important parameter that determines the voltage transformation ratio of the transformer. The turn ratio can be measured using a turn ratio tester.

Turn Ratio Tester

A turn ratio tester is an instrument that is used to measure the turn ratio of a transformer. It consists of a voltage source, a current source, and a voltmeter. The voltage source is connected to the primary winding of the transformer, and the current source is connected to the secondary winding. The voltmeter is used to measure the voltage across the secondary winding.

How To Test Transformer Turns Ratio?

To test the transformer turn ratio, follow these steps:

1. Connect the voltage source to the primary winding of the transformer.
2. Connect the current source to the secondary winding of the transformer.
3. Turn on the voltage source and adjust the voltage to the rated voltage of the transformer.
4. Turn on the current source and adjust the current to the rated current of the transformer.
5. Measure the voltage across the secondary winding using the voltmeter.
6. Calculate the turn ratio by dividing the voltage across the secondary winding by the voltage across the primary winding.

The turn ratio of a transformer is typically expressed as a ratio of integers. For example, a transformer with a turn ratio of 2:1 has twice as many turns in the primary winding as it does in the secondary winding.

Conclusion

The transformer turn ratio is an important parameter that determines the voltage transformation ratio of the transformer. It can be measured using a turn ratio tester. To test the transformer turn ratio, connect the voltage source to the primary winding, connect the current source to the secondary winding, turn on the voltage source and adjust the voltage to the rated voltage of the transformer, turn on the current source and adjust the current to the rated current of the transformer, measure the voltage across the secondary winding using the voltmeter, and calculate the turn ratio by dividing the voltage across the secondary winding by the voltage across the primary winding.