Cable model YJSV72

1. Supply product technical performance

1.1 Specifications

33kV YJSV72 1×400sqmm

1.2 Cable Name

33kV Cu conductor XLPE insulated aluminum wire armored cable PVC outer sheath

1.3 Scope of application

Suitable for fixed installation in the AC system rated voltage 19/33kV industrial device or power

transmission and distribution line.

2. Product technology structure

2.1 The rated voltage

U0/U is 19/33kV

2.2 Conductors

The conductor shall be stranded, circular, and compacted copper wire in accordance with IEC-228

2.3 Conductor Screen

The conductor screen shall comprise a layer of extruded semi-conducting compound, compatible in all respects with the conductor and insulation material. The conductor screen shall be bonded to the insulation in such a way that no voids or discontinuities are present. The bond shall be adequate to withstand normal electrical and mechanical stresses in service without degradation or separation.

2.4 Insulation

The insulation shall be cross-linked polyethylene (XLPE). The cable insulation shall be extruded in one operation with conductor & insulation screens. The highest possible purity of insulation material is required.

2.5 Insulation Screen

The insulation screen shall comprise of a non-metallic semi-conducting polyethylene part in combination with a metallic part.

The non-metallic semi-conducting part shall be applied directly upon the insulation of each core and shall comprise a layer of extruded semi-conducting polyethylene compound.

The conductor screen, Insulation, and semi-conducting part of the Insulation screen layer shall be applied to the conductor in a common extrusion process with a dry curing system.

The metallic part shall be stranded copper applied directly over the semi-conducting part. It shall comprise a single layer of copper wires equally spaced apart.

2.6 Inside sheath

Extrusion of PVC inside the sheath prevents armor damage to insulation.

2.7 The armor

The armor shall consist of a single layer of aluminum wires in accordance with IEC60502.

2.8 Outer Covering

The cable shall be sheathed overall with a PVC (polyvinyl chloride) outer sheath. The outer sheath shall be of smooth and uniform composition and free of holes. Cracks blisters and imperfection.

As protection against termite attack, the outer covering shall contain the termite repellent substance of Pb naphthenate.

The outer sheath shall be of adequate strength and thickness to withstand the test voltages and mechanical tests and shall be suitable for the ambient conditions at the site.

The outer sheath material shall be capable of withstanding without damage or deformation the highest temperature achieved with the cable at its rated current and at the site ambient conditions.