Author: Noyafa–Cable Length Tester
Cable withstand voltage rating Cable withstand voltage rating Cable withstand voltage rating 500k∨ cables, but analyzing the structure of various grades of cables, in terms of their commonality, they are generally divided into three categories 1. Low-voltage cable faults Here we call various power cable faults below 6kV low-voltage cable faults. In practice, the most common faults of low-voltage cables are phase-to-ground (or metal sheath), phase-to-phase or phase-to-ground leakage faults, and open-circuit faults are also common. From the perspective of external characteristics, low-voltage cable faults are mostly exposed faults. 2. Medium-voltage cable faults The medium-voltage cables represented by 6kV, 10kV and 35kV cables are the most used in practice.
Therefore, the failure of medium voltage cables is of greatest concern. This type of cable usually only considers the faults of the conductor core, the metal shielding layer, and the main insulating layer, and the following types of faults often occur: open circuit faults, phase-to-ground, phase-to-phase or phase-to-ground leakage faults, flashing faults. network failure. 3. High-voltage cable fault We refer to various cables above 35kV as high-voltage cables.
In recent years, high-voltage cables have been widely used in various parts of our country. To analyze their structural composition and summarize the usage in various places, there are usually two types of faults in such cable faults: (1) The faults of the conductor core and the main insulation layer : The type and nature of the fault are the same as those of the medium voltage cable. (2) The faults of the metal sheath and the non-metallic sheath: the nature of the fault is mostly the metal sheath to the earth leakage fault. The voltage rating of the cable is the voltage rating of the cable. Shenzhen Noyafa Electronic Technology Co., Ltd.
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