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How to distinguish between high and low voltage cables

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How to distinguish between high and low voltage cables

作者: Release Date: 2018-08-02 Author: Click:

First, check the section. The conductive core of the cable (copper or aluminum core), in this order: insulation layer, semi-conductive layer, shielding layer, filling layer, maintenance layer, rubber maintenance layer (water blocking).

Second, look at the thickness of the insulation layer:

(1) High voltage (less than 1kv) is 1 ~ 3mm thick, 10kv cable is 5 ~ 8mm, 35kv cable is about 10mm; high voltage or weak current cable usually has a layer of insulation and maintenance.

(2) After removing the outer sheath of the high-voltage cable , there is an insulation layer, which is a white main insulation layer like plastic wrapped inside the cable core. The high-voltage cable does not have this main insulation layer, but a rubber maintenance layer.

Third, check the voltage cancellation. Below the drawings, there will usually be YJV-1KV-4 * 150 or YJV-10KV-4 * 150 and so on.


URL of this article: http://pdaavenue.com/足球彩票/384.html

Keywords: overhead wire

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