China Overhead Line Bare Conductor Insulation Cover

RUBNS-OLC
Silicon Rubber Overhead Line Cover
Description
The innovative product design, ease of installation. Use silicon rubber material, anti-aging, corrosion resistance, with good resistance to corona resistance, high temperature performance, especially suitable for the protection of the bare wire. Widely used in substation protection works and railway catenary system, a significant effect in the cross-lines.

Serial No.PropertiesUnitStandard DataTest ResultsTest Methods1Electrical Strength TestKV/mm2022GB/T 1408.1-20062Volume ResistivityΩ.cm
1x10 142x10 14GB/T 1410-20063Dielectric Constant 2-32.3GB/T 1409-20064Shore Hardness 70±57.1GB/T 531


5

5.1
5.2Mechanical Properties
Before ageing
Tensile Strength

Elongation at break
After Heat ageing(180degrees C, 7d)

Tensile Strength Change
Elongation Change


MPa

%200


±30

±30


5.5

243


13

-22GB/T 5286Low Temperature Elongation(-15degree C , 2h)%20190GB/T 2951.4-19977Low Temperature Flexibility(-50degree C , 4h)-No cracksNo cracksUL224-20048High Temperature Crack Resistance(155degree C, 2h)-No cracksNo cracksGB/T2951.6-1997

Product Dimensions

LJ Stranded Wire Cross-sectional Area(Nominal)O.D. Of LJ Stranded Wire(mm)Silicone Rubber Sleeving Covers Models16 mm²ID ID1035 mm²7.50ID1050 mm²9.00ID1270 mm²10.80ID1295 mm²12.48ID17120 mm²14.25ID17150 mm²15.75ID20185 mm²17.50ID20210 mm²18.75ID24.2240 mm²20.00ID24.2300 mm²22.40ID24.2400 mm²25.90ID30500 mm²29.12ID32630 mm²32.67ID35800 mm²36.90 ID39.8

Voltage Ratings/Wall Thickness

Voltage(kV)≤10kV≤35kV≤110kV≤220kVThickness(mm)2.3mm2.3-3.0mm4.0-6.0mm6.0-8.0mm