GB/T 18380.35-2022
Tests on electric and optical fibre cables under fire conditions—Part 35：Test for vertical flame spread of vertically-mounted bunched wires or cables—Category C (English Version)

Standard No.

GB/T 18380.35-2022

Language

Chinese, Available in English version

Release Date

2022

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 18380.35-2022

Replace

GB/T 18380.35-2008

Scope

This document describes a Type C test method for evaluating the ability of vertically installed bundles of wires and cables or optical cables to inhibit the vertical spread of flame under specified conditions. This document is applicable to the total nominal volume of non-metallic materials contained in the cable and optical cable sample sections installed on the test steel ladder is 1.5L/m. The fire supply time is 20 min. Electrical and optical cables are installed in front of the steel ladder, and category C is used for evaluating occasions with low volume content of non-metallic materials. This test is used for type approval test. See Appendix A for the selection requirements of test cables and optical cables. Flame spread is determined by the damage extent of the cable and cable samples. This test procedure can be used to verify the ability of electrical and optical cables to suppress the spread of flame. Recommended performance requirements are given in Appendix B. Note: The term "wire and cable" in this document includes all metal conductor insulated cables used for power or signal transmission.

GB/T 18380.35-2022 history

• 2022 GB/T 18380.35-2022 Tests on electric and optical fibre cables under fire conditions—Part 35：Test for vertical flame spread of vertically-mounted bunched wires or cables—Category C
• 2008 GB/T 18380.35-2008 Tests on electric and optical fibre cables under fire conditions. Part 35: Test for vertical flame spread of vertically-mounted bunched wires or cables. Category C

GB/T 18380.35-2022 -All Parts