What is the high resistance fault of the power cable? Kingsignal Technology

What is the high resistance fault of the power cable?

author：kingsignal time：2017/05/23

High resistance fault of the power cable: the DC resistance of the cable fault point is greater than the fault of the characteristic impedance of the cable.

High resistance fault classification of power cables:

1. High resistance leak failure

In the cable high voltage insulation test, the leakage current increases with the test voltage increases, when the experimental voltage rises to the rated value (sometimes far less than the rated value), the leakage current exceeds the allowable value, called the high resistance Leaked.

2. flashover failure

The core of the cable or the number of core-to-ground insulation resistance or core and core insulation resistance between the value is very high, but the cable DC voltage test, the voltage added to a certain value, the sudden emergence of insulation breakdown Phenomenon, such a fault called flashover failure.

The above is a brief description of the high resistance fault of the power cable, learn more about the power cable content, please pay attention to kingsignal official website.

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