T/GDWCA 0027-2018 Active Group standards

T/GDWCA 0027-2018 Flame-resistant and high-performance fire-resistant cable with rated voltage of 450/750 V

Publish Date: 2018-01-31 Implement Date: 2018-02-28 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/GDWCA 0027-2018

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Fire-fighting equipment and materials

ICS Name: Cable

Publish Date: 2018-01-31

Implement Date: 2018-02-28

Scope

Scope: This standard specifies the terms and definitions, product models, product representation methods, requirements, test methods, inspection rules, marking, packaging, storage, and transportation for high-performance fire-resistant cables with a rated voltage of 450/750 V. This part applies to AC cables with a rated voltage of 450/750 V used in civil buildings, which have flame retardant and fire-resistant properties and long service life. This part does not apply to cables used in special environments such as high temperatures, high corrosion, and high radiation. Main technical content: Requirements: 1. The conductor should be annealed copper wire, and the single wires in the conductor may not be tin-plated or tin-coated. 2. For fixed installation cables, the conductor should be a round solid conductor or a round stranded conductor as specified in GB/T 3956-2008. 3. The conductor resistance of the product at 20℃ should comply with the relevant requirements of GB/T 3956-2008. 4. The technical performance of the fire-resistant mica tape used in the product should comply with the provisions of Appendix C of GB/T 19666-2005. 5. The fire-resistant layer should pass the spark test machine test at a power frequency voltage of 2kV, and there should be no breakdown phenomenon. 6. The average total thickness of the insulation layer should not be less than the nominal value, and the thickness at the thinnest point should not be less than 90% of the nominal value minus 0.1mm, etc.