Which tests on current transformers can be performed by a CT Tester? The test on a current transformer that can be done by a CT tester is the Ratio Test. The CT tester is used to inject a primary current or secondary voltage into the CT and measure the corresponding output current. This test is performed to verify that the turns ratio of the CT is within the specified range and to ensure accurate current measurement. The CT tester can also be used to perform other tests such as polarity test, insulation resistance test, burden test, and magnetization curve test. Supplier of CT /PT Tester in India Supplier of different types of CT testing equipment. Supplier of Ct Analyzer Supplier of CT Analyzer similar to omicron CT analyzer