T/LWB 030-2021 Abolished Group standards

T/LWB 030-2021 Rated voltage of 20kV and below carrying type overhead insulated cable

Publish Date: 2021-01-01 Implement Date: 2021-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/LWB 030-2021

Standard Type: Group standards

Standard Status: Abolished

is_force_gb: no

CCS Name: Cables and their accessories

ICS Name: Cable

Publish Date: 2021-01-01

Implement Date: 2021-02-01

Scope

Main technical content: 7.3 Insulation: - For 1 kV cables, the insulation uses a weather-resistant black compound based on polyvinyl chloride (PVC), polyethylene (PE), or cross-linked polyethylene (XLPE), and the insulation performance shall meet the requirements of GB/T 12527-2008. - For 10 kV and 20 kV cables, the insulation uses a compound based on XLPE or high-density polyethylene (HDPE), without a semiconductive shielding layer on the outside of the insulation layer. The insulation material is black and weather-resistant. The insulation performance shall meet the requirements of GB/T 14049-2008. - The insulation should be tightly extruded over the conductor or the semiconductive shielding layer, and the surface of the insulation should be smooth and even in color. The nominal value of the insulation thickness shall comply with Tables 3 and 4. The average value of the insulation thickness shall not be less than the nominal value, and the thickness at the thinnest point shall not be less than 90% of the nominal value, with a minimum thickness of 0.1 mm.