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Elevator cable manufacturers on the main classification of power cables
Elevator cable
Power cable is used for transmission and distribution of electric power cable, power cable is commonly used in urban underground power grid, power station leads lines, industrial and mining enterprises in the internal power supply and over the river. In the power line, the proportion of the cable is gradually increasing. Power cable is used for transmission and distribution of high power cable products in the main line of power system, including 1-500KV and above all kinds of voltage level, all kinds of insulated power cable.
Elevator cable manufacturers to tell us - the main classification of power cables:
- according to the voltage level
According to the voltage level can be divided into medium and low voltage power cables (35 thousand volts and below), high voltage cables (more than 110 thousand volts), ultra high voltage cables (275 to 800 thousand volts) and extra high voltage cables (1 million volts and above). In addition, the current system can be divided into AC and DC cables.
- according to the insulation material branch
1, oil impregnated paper insulated power cables with oil paper insulated power cable. Its application history is the longest. It is safe, reliable, long service life and low price. The main disadvantage is that the laying of the gap limit. Since the development of a drop of tidewater dip paper insulated, to solve the gap restrictions, so that oil impregnated paper insulated cables can continue to be widely used.
2, plastic insulated power cable insulation layer for the extrusion of plastic power cable. Commonly used plastics are polyvinyl chloride, polyethylene, crosslinked polyethylene. The plastic cable has the advantages of simple structure, convenient manufacture and processing, light weight, convenient laying and installation, and is not limited by the height of the laying. It is widely used for medium voltage cables, and replace the sticky impregnated oil paper cable. The biggest drawback is the presence of a branch breakdown phenomenon, which limits its use in higher voltage.
3, rubber insulated power cable insulation layer for the rubber plus a variety of coordination agent, after full mixing and extrusion in the conductive wire core, after heating and curing. It is soft and flexible, and is suitable for the occasions of frequent movement and small bending radius.
Used as a natural rubber compound insulation - SBR mixtures, ethylene propylene rubber, butyl rubber etc..
- according to the voltage level
1, low voltage cable: suitable for fixed laying in the AC 50Hz, rated voltage 3KV and the following transmission and distribution lines for transmission of electrical energy.
2, medium and low voltage cables: (generally refers to 35KV and below): PVC insulated cables, polyethylene insulated cables, crosslinked polyethylene insulated cables, etc..
3, high voltage cables: (generally more than 110KV and above): polyethylene cables and cross linked polyethylene insulated cables, etc..
4, ultra high voltage cable: (275 ~ 800 thousand volts).
5, extra high voltage cable: (1 million volts and above).
Our main products:
Elevator cable http://www.shhcdl.com/
Elevator cable manufacturers to tell us - the main classification of power cables:
- according to the voltage level
According to the voltage level can be divided into medium and low voltage power cables (35 thousand volts and below), high voltage cables (more than 110 thousand volts), ultra high voltage cables (275 to 800 thousand volts) and extra high voltage cables (1 million volts and above). In addition, the current system can be divided into AC and DC cables.
- according to the insulation material branch
1, oil impregnated paper insulated power cables with oil paper insulated power cable. Its application history is the longest. It is safe, reliable, long service life and low price. The main disadvantage is that the laying of the gap limit. Since the development of a drop of tidewater dip paper insulated, to solve the gap restrictions, so that oil impregnated paper insulated cables can continue to be widely used.
2, plastic insulated power cable insulation layer for the extrusion of plastic power cable. Commonly used plastics are polyvinyl chloride, polyethylene, crosslinked polyethylene. The plastic cable has the advantages of simple structure, convenient manufacture and processing, light weight, convenient laying and installation, and is not limited by the height of the laying. It is widely used for medium voltage cables, and replace the sticky impregnated oil paper cable. The biggest drawback is the presence of a branch breakdown phenomenon, which limits its use in higher voltage.
3, rubber insulated power cable insulation layer for the rubber plus a variety of coordination agent, after full mixing and extrusion in the conductive wire core, after heating and curing. It is soft and flexible, and is suitable for the occasions of frequent movement and small bending radius.
Used as a natural rubber compound insulation - SBR mixtures, ethylene propylene rubber, butyl rubber etc..
- according to the voltage level
1, low voltage cable: suitable for fixed laying in the AC 50Hz, rated voltage 3KV and the following transmission and distribution lines for transmission of electrical energy.
2, medium and low voltage cables: (generally refers to 35KV and below): PVC insulated cables, polyethylene insulated cables, crosslinked polyethylene insulated cables, etc..
3, high voltage cables: (generally more than 110KV and above): polyethylene cables and cross linked polyethylene insulated cables, etc..
4, ultra high voltage cable: (275 ~ 800 thousand volts).
5, extra high voltage cable: (1 million volts and above).
Our main products:
Elevator cable http://www.shhcdl.com/