What are the ratio and phase angle error of current transformer?

The ratio error is the current value indirectly measured through the secondary circuit (KeI2 minus the percentage of the actual value of the primary current to the actual value of the primary current). That is, the phase difference refers to the angle between the secondary current phasor and the primary current phasor after rotating 180 °, also known as the angle error. It is stipulated that when the secondary current phasor leads the primary current phasor, the error is positive, and vice versa, it is negative.

Our GDVA-405 CT PT analyzer is used for analyzing the ratio and phase angle error of current trasnformer and other comprehensive characteristic tests. for example:Excitation characteristic test,Secondary winding resistance measurement and secondary burden measurement,5% and 10% error curve measurement,Transient characteristics analysis and so on.

Embedded computer. Easy to operate and test data analysis. Computer control functions can also be customized.

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