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Types of cables, wires and cords

  • May 7, 2018

To any master, and just to the one who sometimes deals with the replacement of cables and wires in their home, will be useful to know more detailed information about their types.

Power cables

Recently, among this class of cables, the VVG is gaining more and more popularity. It is a classic power cable, the inner wires of which are protected by a PVC shell. VVG is needed for the transmission and distribution of electricity, the operating voltage of which is 1000 V. Permissible frequency – 50 Hz. The number of cores in the VVG can be different, usually from 1 to 5. Veins are one -wire and multi -wire. The cable is operated in the temperature range from -50 ° to +50 °. Does not deteriorate with humidity up to 98%. In general, the IHG is quite durable and resistant to many chemicals.

Among the varieties of VVG is highlighted: ABVG (in it, copper core is replaced by aluminum), VVGGG (has improved characteristics of non -combustibility), VVGP (has a flat section of the cable), VVGZ (the inner surface in it is filled with juckets or elastic mixture).

Separately, the advantages of armored power cable should be mentioned. The armor in it is represented by two ribbons that overlap the boundaries of the turns in the cable.

Wires

An ordinary wire is one -wire veins covered with thickened PVC insulation insulation. The number of copper cores in it is from 2 to 3 with a cross section of 1.5 mm. Widely used in the installation of stationary lighting devices and apartment sockets.

The main subspecies of the wires: PUGNP (from the usual wires are different in that inside them are multi -wire veins, therefore they are more flexible), ApunP (the veins in it are made of aluminum), PVP (flat version of the copper wire, inside of which there are dividing jumpers), PVS ( Multi -dwelling wires made of copper).

Cables designed to transmit data

The most popular in this class is the antenna cables. Usually they consist of the main copper wire, thick external insulation made of polyethylene, protective aluminum screen and an external conductor represented by a copper braid.

Computer cables are also called a twisted pair. In them, each conductor is wrapped in pvc isolation.

Telephone cables

Among the cables, two main types are distinguished for transmitting a telephone signal: TPPEP and TRV. The first is used almost everywhere, when it is planned to serve a large number of subscribers. The cable is represented by paired retinue wires. The second type is more often used to lay telephone lines in the interior. The strength of the shell is inferior to the TPPEP. The number of cores in the TRV is usually 2 pieces, but there are 4 residential subspecies. Operation of these cables is possible at a temperature of -10 ° to +40 °.

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