The role of low voltage power cable

Release time:

2020-11-24 15:23

A cable is a conductor covered with an insulating layer, a protective layer and a shielding layer, used to transmit power, signal current and signal voltage. Compared with low-voltage overhead lines and low-voltage overhead insulated lines, although low-voltage power cables are expensive and difficult to lay and maintain, they are reliable in operation, do not erect columns, do not occupy the ground, are not ugly, and are less affected by external influences. and widely used inLV power cablein the system.


LV power cableWhat is the role?
LV power cableIt is a cable used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, power station outgoing lines, internal power supplies for industrial and mining enterprises, and underwater transmission lines across rivers. At present, there are single-core, double-core, three-core, four-core and five-core household low-voltage power cables. Single-core cables can be applied to single-phase lines or three-phase lines as required. Two-core cable for single-phase line. Three-core, four-core and five-core cables are used for three-phase three-wire and three-phase four-wire respectively.


How to choose low voltage power cable?
Aluminum core cables should be used in general environments and places, while copper core cables should be used in places with strong vibration, special buildings and special requirements.
Laying on the groundLV power cableAn outer sheathed armored cable is usually used. Plastic sheathed cables and lead (aluminum) sheathed cables with an outer sheath can also be used where mechanical damage is unlikely.


In the soil with chemical corrosion or stray current corrosion, buried type should not be used as much as possible.Electric wireCable. If you want to bury it in the ground, you should use anti-corrosion cables.
The wire and cable laid in the pipeline usually uses plastic sheathed cable, but also uses bare armored cable.
Wire and cable for electrical equipmentCables laid in cable trenches or cable tunnels should not use flammable or extended external sheaths. Generally, exposed armored cables, plastic sheathed wire cables, and exposed lead (aluminum) covered cables are used.
When placing wires and cables in places with large height differences, plastic insulated cables, dripless cables and dry insulated cables should be used.
Medium Voltage Power CableThe choice should also be paid attention.

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