Conductor

Copper or aluminum core of circular of sector-shaped form, of the 1 or 2 class according to GOST 22483.

Insulation

XLPE (color coded conductor).

Core arrangement and twisting

Insulated conductors of multi-core cables are twisted. It is allowed to manufacture cables with SZ-stranding.

In cables of types PvVG-Png (A)KhL, APvVG-Png (A)KhL conductors are situated in parallel in flat formation.

Inner sheath

PVC-compound or PVC-compound of low flammability is manufactured with the extrusion with filling of exterior gaps between insolated conductors (for cables with nominal cross-section to 16 mm² inclusive the inner sheath may be without any filling.

Screen

For cables of types PvVGEng (A)KhL, APvVGEng (A)KhL is made of copper tapes or copper wires and a spiral taping with a copper tape.

Taping

It is allowed to lay a separation layer of fiberglass on top of the screen. It is possible to lay water-blocking tape instead of the above one, that is stipulated in the order, in this case letter ‘’F’’ is entered in the designation of the cable.

Cable armoring

For cables of types PvBShvng (A)KhL, APvBShvng (A)KhL is laid helically with two steel, galvanized tapes.

For cables of types PvKShvng (A)KhL, APvKShvng (A)KhL is laid helically with steel, galvanized wires.

For cables of types PvBaShvng (A)KhL, APvBaShvng (A)KhL is laid helically with two aluminum tapes .

For cables of types PvKaShvng (A)KhL, APvKaShvng (A)KhL the armor is laid with aluminum wires.

Cable sheath or jacket

PVC-compound of low flammability

The cables are designed for transmission and distribution of electric energy in stationary electric installations on alternating voltage 0,66 and 1 kV and frequency 50 Hz.

The cables are used for group installation in cable lines in cable constructions, open-air electrical installations (cable overpasses, arcades).

The cables armored with steel, galvanized wires or wires of aluminum or aluminum alloy are designed for laying on the route, where the tensile forces during exploration are possible, including for installation in seismically active areas, in conditions of permafrost and areas, subjected to offset soil, in bulk and dry soils.

While manufacturing the cables one uses the materials, which allow the cables to be resistant to low temperatures up to – 60⁰C (degrees below zero) are used.

The class of fire hazard of the cables according to GOST 31565 П1б.8.2.5.4.

TABLE 1

Nominal voltage of the cables, number and nominal cross-section of current - carrying conductor

* – for operation in DC voltage only

TABLE 2

Cross-section of copper wires