Cables are one of the necessary materials in power systems, usually composed of insulation, conductors and protective layers. YJV cable is also one of the cable types, mainly used in nuclear power plants, subways, tunnels, high-rise buildings and other places related to fire safety and fire rescue. So what is YJV wire and cable? What specifications and models do you have for YJV power cables? What are its laying methods and requirements? Next, learn about related knowledge with Jinshui Cable Group.
The yj in the YJV power cable means cross-linked polyethylene, v means polychloride, then YJV is a cross-linked polyethylene insulated PVC sheathed cable, the scope of use is for rated voltage (U0/U)0.6/1--- For 26/35kv power line transmission and distribution, the maximum rated temperature of the cable conductor is 90°C when in use, and the maximum temperature of the cable conductor is not more than 250°C when short-circuited (the longest duration does not exceed 5S). It is currently widely used in urban power grids, novel cables in mines and factories.
The cores of YJV cables mainly include single core, 2 cores, 3 cores, 4 cores, 3+1, 3+2 and other types. 3+1 means 3 phase wires and 1 ground wire. The classification of YJV cables can be divided into:
1KV and below are low-voltage cables;
1kv~10KV is medium voltage cable;
10KV~35KV is high voltage cable;
35~220KV UHV cables.
(We can customize related wires and cables according to customers' needs.)
Special tools should be used for cable laying, such as pay-off racks and other tools, to prevent mechanical damage during laying and keep away from the power supply. When the cable is laid through the pipe, the inner diameter of the pipe should not be less than 1.5 times the outer diameter.
The above is the knowledge of YJV power cable products introduced by Zhengzhou Jinshui Cable and Wire Group. I hope it will help you in the process of using and purchasing. Zhengzhou Jinshui Cable Group has a mature sales team and experienced manufacturing department. We always adhere to the concept of serving you wholeheartedly. Welcome to consult more product content! ! !
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