The Transformer Turns Ratio (TTR) is calculated by dividing the number of turns in the primary winding by the number of turns in the secondary winding. This ratio helps in determining the voltage transformation between the primary and secondary sides of the transformer.

The formula for calculating the transformer turns ratio is:

$$\text{Turns Ratio} = \frac{\text{Primary Turns}}{\text{Secondary Turns}} = \frac{\text{Primary Voltage}}{\text{Secondary Voltage}}$$

Where:

• Primary Turns/Voltage is the number of turns or voltage on the transformer's primary winding.
• Secondary Turns/Voltage is the number of turns or voltage on the transformer's secondary winding.

For example, if a transformer has 1000 turns on the primary winding and 100 turns on the secondary winding, the turns ratio would be:

$$\text{Turns Ratio} = \frac{1000}{100} = 10:1$$

This means the transformer will step down the voltage by a factor of 10. TTR testing is done to verify this ratio, ensuring that the transformer operates as designed.

Oct 17,2024