What are the electrical performance testing methods for wire and cable?

I. Wire and cable electrical performance testing methods which are 1. Insulation resistance testing in the process of testing the insulation resistance of wire and cable, but also need to pay attention to the electrical properties of wire and cable, due to its close correlation between the two, so in the insulation with the test, you can fully improve the electrical properties of the importance of the test. Generally speaking, the insulation resistance of wire and cable can intuitively reflect the majority of its performance to withstand thermal breakdown. Commonly speaking, insulation resistance is the wire insulation layer of wire and cable leakage of the current, is the current with the wire and cable to withstand the voltage value between the ratio. In the wire and cable insulation resistance detection, more commonly used two methods, respectively: current and voltage detection methods, current comparison detection methods. Therefore, in the process of its detection, it should be reasonable for the selection of detection equipment. Thus fully guarantee the accuracy and reliability of the results of the experimental detection. 2. voltage experimental detection of the power system in the process of operation, generally speaking, wire and cable need to bear a relatively strong electromagnetic field, into the face of the requirements of its relatively strong insulation strength. In order to fully protect the wire and cable has good insulation strength. Effectively prevent the electromagnetic field F electric breakdown and other corresponding problems, so, it is necessary to carry out voltage experiments on the wire and cable. In this process, in order to fully guarantee the accuracy of the voltage test results. It is necessary to pay attention to the special characteristics of the experimental environment, and then intercept part of the wire and cable samples, formally carry out the voltage experiment detection. Then in both ends of the wire and cable samples are usually a specific amount of voltage, keep a fixed amount of time, observe whether the wire and cable electric breakdown. At the same time. Also need to wire and cable insulation strength is also a corresponding test, and then determine whether the wire and cable insulation strength can fully comply with the relevant provisions of the standard.

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