Current Transformer Testing with the SVERKER900

This application note gives examples on how to perform some typical tests on current transformers (CTs) with SVERKER 900. These tests are common to perform for instance during commissioning.

Tests

• Ratio and polarity test with AC current ▪ Polarity test with DC current
• Polarity and ratio test with AC voltage ▪ Burden impedance test
• Secondary resistance test (RCT) with DC current ▪ Magnetization curve test
• Primary injection test – with load connected