Stock Code:300252.SZ

High - voltage cable basics

author:kingsignal time:2017/08/16

High-voltage cable is a power cable, is used to transmit 10KV-35KV (1KV = 1000V) between the power cable, and more used in the power transmission of the main road. High-voltage cable products to implement the standard GB12706.3-2002 single-core high-voltage cable


1.Types of high voltage cables


The main types of high-voltage cables are YJV cable, VV cable, YJLV cable, VLV cable.


YJV cable: full name XLPE insulated PVC sheathed power cable


VV cable: full name PVC insulated PVC sheathed power cable


YJLV cable: full name XLPE insulated PVC sheathed aluminum core power cable


VLV cable: full name PVC insulated PVC sheathed aluminum core power cable


Due to the excellent conductivity of copper conductors, more and more projects using copper core power cable as the main power supply system, and the application of aluminum core power cable is less, especially in the more high-voltage power system, select the copper core The more cables.


2.The structure of high voltage cables


High-voltage cables from the inside out to the outside components include: conductor, insulation, the inner layer, filler (armored), external insulation. Of course, armored high-voltage cables are mainly used for buried, can resist high-intensity oppression on the ground, while preventing other external damage.


3.High voltage cable use characteristics


The product is suitable for AC rated voltage 35KV and below for the transmission and distribution of power fixed line, the cable conductor of the highest long-term working temperature of 90 degrees, short circuit (the longest time does not exceed 5S), the cable conductor maximum temperature does not exceed 250 degrees.


UHV cable


1KV and below for the low-voltage cable; 1KV ~ 10KV for the medium voltage cable; 10KV ~ 35KV for the high-voltage cable; 35 ~ 220KV for the special high-voltage cable;


UHV cable is a kind of power cable with the continuous development of cable technology. UHV cable is generally used as a high-voltage cable with high technical content in large-scale transmission system. It is mainly used for long-distance electric power transmission.


The above is a brief introduction to the basics of high voltage cables, learn more about power cable content, please pay attention to kingsignal official website

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