一种变频测量电流互感器介损的方法

针对电流互感器现场介损测试易受电磁干扰的特点，在常规试验基础上，分别进行了高压试验和变频试验。适当提高试验电压和改变试验电压频率的试验方法，均可比较有效排除电磁场的干扰，从而获得可信的介损值。通过对比两组试验数据发现，高压法测试电压较高且不易操作，而变频法却可在较低的试验电压下就获得更加稳定可靠的介损值，且易于操作，因而可以在现场介损测试中广泛推广。

A method of measuring dielectric loss of current transformer by changing frequency

According to the feature that the measurement of dielectric loss of the current transformer is easily interfered by electric and magnetic field, h igh-voltage and frequency-changing experiments are operated on the basis of regular experiments.High-voltage experiments and frequency-changing experiments both can effectively exclude interference of electric and magnetic field, thus getting a reliable result of dielectric loss. Via comparison ,h igh-voltage experiments must work under relatively high voltage an...