Build Daily

Wires And Cables

August 12, 2017 18:07

Specifications PVS wires

decipher the abbreviation PVA as follows: "P" - wire "B" - PVC insulated, "C" - connection.Today there is a wide range of products that differ in the number of veins, weight, cross-section and, of course, the manufacturer.Next, we bring to your attention to the most important technical characteristics of the PVA cable.

  • design description
  • Operating conditions
  • Scope
  • Hersteller

Design description

The four-core copper conductor photo

should be allocated among the design features Wire PVS:

  • number of cores - 2, 3, 4, 5;
  • outer conductor diameter ranging from 5.7 to 13.9 mm;
  • cross-section: minimum - 0.5, maximum - 25 mm2 (the first and last frame size is rarely used);
  • core insulation - PVC, in fact as well as the outer protective shell;
  • core structure - copper, stranded, flexible (class 5 according to GOST 7399-97);
  • colors of the wires there and meet the standards;
  • weight ranges from 54 to 256 kg / km.

Visually these parameters PVS wire you can see in the table:

Main factors

Operating conditions

Among the main operational indicators PVS wire isolated:

  • working (nominal) voltage up to 660 V;
  • electric current frequency of 50 Hz;
  • operating temperature from -25 to + 40 ° C, and the wiring can be carried out at a temperature not lower than -15 ° C;
  • the maximum temperature did not live more than + 70 ° C;
  • life of up to 10 years, while the warranty period is 2 years, and if the handler will be used with frequent excesses, the service life can be reduced to 6 years;
  • life of 30,000 cycles or 60,000 movements (in this case, the bends) at rated voltage.

should also be noted that if the acronym for the charge of the letter "T" - T-PVS, it means that the wire has a tropical design, which makes it resistant to mold defeat.

illustrative video overview:

conductor structure in a graphical model
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With regard to the application of PVA wires, you need to stay here more.It is unlikely that you know that in most modern electrical connection is by means of the conductor.Outwardly it may resemble cable VVGng and many other products.In terms of household PVA is used to repair the appliance, replacing it with a new cable (most commonly used wire marked 3 3 2.5 or 1.5).The photo shows how to use the wire to connect the chandelier, holding out his under plaster.

Connecting the chandeliers with PVA You can easily make an extension cord with your hands, using this particular flexible conductor connection.Extension

main thing before you decide to buy the product, carefully perform the calculation of the cross section of the conductor for power and current, to choose the most suitable core diameter.Five lived

Use PVA cable for fixed wiring in the apartment and the house is not highly recommended because of its shortcomings as:

  1. product is not designed for use as a wire that is connected with a small service life and low fireproof properties.
  2. itself transcript labeling indicates that the wire is designed only for the connection.
  3. For about the same price you can buy a more popular counterpart.

At the same time the rules of the SAE and the guest does not stipulate a ban on the use of this option for laying flush, connection sockets or even ground.If you do decide to use such a product, make sure you select the correct section lived, and that the line is not passed on the street, because the temperature mode of use is quite limited.The ground wire PVA nobody puts, asWe have already emphasized above, that his appointment does not apply to street gasket line.

should also draw your attention to the fact that the stranded conductors, so before connecting to electrical appliances must be carried out tinning.


is impossible to accurately assert that this or that manufacturer of wire PVA is the most high quality and best price.This is due to many factors, such as the huge number of fakes on the market, the remoteness of the region from the city, where the plant is located, etc.Bay

We advise you in choosing to determine wire size sincesometimes it may be different from the code number, which is listed on the insulation (for example, instead of 2 to 2.5 2h2,35).As a result, you can become not only duped, but also affected if the line fails when current overloads.

If you believe the reviews on the Internet, the most high-quality manufacturer is Kolchugino.

That's all that I wanted to tell you about the technical characteristics of the wires PVA.We hope that the information was useful and interesting for you!