Xlpe Insulated Power Cable for Subway 26/35KV

Product Description:

1. rated voltage U0/U: 26/35kV

2. specification( core number *cross-section of conductor):1×95mm2/1×150mm2/ 1×300mm2

Structure Specification

1) Conductor type: the second annealed compressed stranded flexible copper conductor

2) Insulation structure: conductor screen, XLPE insulation and insulation screen(coextrusion)

3) Semiconduction: semiconductiive water proof buffer strip

4) Metallic shield: copper wire nondense winding metallic screen ( or copper tape overlaying winding)

5)Waterproof layer: expanded waterproof tape and aluminum plastic tape longitudinal wrap molding metal tube

6) Inside liner: adhere oxygen blocked inside liner and aluminum plastic metal tube together

7) armor or mouse proof: mouse proof armored copper tape or high flame retardant glass fabric fire-resistant tape

8) termites proof outer sheath: class A LSZH flame retardant termites proof outer sheath

Standard for production

The standard for producing 35kv XLPE insulated power cable with for subway is GB/T 12706-2008 and enterprise standard.

1)About the conductor:

For the hard cable, the conductor shall meet the requirement of GB/T 3956-2008 over the second type annealed bare copper conductor.

For the flexible cable, the conductor shall meet the requirement of GB/T 3956-2008 over the sixth or similar metallic or non-metallic layer annealed copper conductor, usually metallic layer is tin.

2)The Max. permissible operating temperature of the cable is 90°C.

3)The water permeability test for the cable meets the requirement of GB/T 12706-2008.

4)the cable passed the electro-osmosis proof test , without breakdown under 240h, 1800v DC voltage

5)The low smoke performance when burning meet the requirement of GB/T 17651, it is that the Min. light transmittance of the density of smoke when burning is not less than 60%.

6)The PH value of the emergent gas when burning is not less than 3%, and the electric conductivity is not more than 10µs/mm.

Production Equipment

Wiredrawing equipment and technical skill

Double-head large drawing mill (the speed for drawing is 31.5m/s, inlet wire isΦ8.0mm, while the outlet wire isΦ1.15~4.5mm