The No-load voltage Ratio between two windings of a transformer is called 'Turn Ratio'.
The aim of measurement is: Confirming the no-load voltage ratio given in the customer order specifications, determining the conditions of both the windings and the connections and examining the problems (if any).
The measurements are made at all tap positions and all phases.
Measurement circuit and performing the measurement
1. Turn Ratio Measurement
The turn ratio measurement can be made using two different methods:
1. Bridge method
2. By measuring the voltage ratios of the windings
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