How is a transformer tested?

To test a transformer, it’s essential to assess various parameters to ensure its reliability and efficiency. Common testing methods include insulation resistance testing, power factor testing, and turns ratio testing. Insulation resistance testing evaluates the quality of insulation materials, while power factor testing determines the dielectric losses. The turns ratio test checks the voltage ratios between primary and secondary windings to ensure correct configurations. Additional tests, such as transformer sweep frequency response testing and temperature rise testing, can provide further diagnostics to identify potential issues. Using tools like a transform test device from Globecore allows for accurate measurements, ensuring the transformer’s operational integrity and longevity.