Current Transformer Tests
- Accuracy class checking with CT ratio error and phase displacement according to IEC 61869-2
- Knee point voltage measurements according to IEEE/IEC/BS std.
- Winding resistance measurement
- Turn ratio test
- Polarity check
- Burden test
- Calculation of actual limit factor/safety factor according to measurements
- Wiring connection check with primary injection
- Insulation capacitance and dissipation factor tests
- Insulation resistance measurements
- Power frequency withstand test