6.6～33kV XLPE Insulated Power Cables

EXECUTIVE STANDARDS

IEC 60502 for extruding insulated power cables and accessories.

IEC 60331 for flame retardant cable

IEC 60332 for fire resistant cable

    DESCRIPTION

    Single core and three-core cables with copper or aluminum conductor, XLPE insulated and PVC sheathed.

    Cables are rated at 6.6~35kV and conformed to IEC 60502, IEC60331 & IEC 60332.

    CONSTRUCTION

1.    Conductor

Plain circular, compacted stranded copper or aluminum conductor conform to IEC 60228 Class 2

2.    Conductor Screen

Extruded layer of semi-conductive compound

3.    Insulation

XLPE (cross-linked polyethylene) rated 90℃

4.    Insulation Screen

a.     Non-metallic part

Extruded layer of semi-conductive compound

b.    Metallic part

Copper tape screen

5.    Assembly

Three screened cores are laid up together, if necessary filled with non-hygroscopic material compatible with installation and covered with a layer of PVC sheath.

6.    Bedding

Extruded layer of PVC ST2 compound.

7.    Armor

Galvanized steel wire shall be applied helically over the PVC bedding.

8.    Outer Sheath

PVC type ST2, IEC60502 colour black.

 9. Colors for Core Identification

Red, yellow, and blue tapes shall be applied between non metallic and metallic part of insulation screen.

Applications:

6.6~33kV XLPE insulated power cables are generally suitable for direct burial or for installation on trays or ducts.

Where there is a risk of mechanical damage, armored cables should be used.