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GB/T 18380.32-2022Tests on electric and optical fibre cables under fire conditions - Part 32: Test for vertical flame spread of vertically-mounted bunched wires or cables - Category A F/R (English PDF)

电缆和光缆在火焰条件下的燃烧试验第32部分：垂直安装的成束电线电缆火焰垂直蔓延试验　A F/R类

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

April 15, 2022

Implementation date

November 1, 2022

Scope

GB/T 18380.32-2022 is the English-translated version of 电缆和光缆在火焰条件下的燃烧试验第32部分：垂直安装的成束电线电缆火焰垂直蔓延试验　A F/R类.

GB/T 18380.32-2022 is the Chinese standard "Tests on electric and optical fibre cables under fire conditions - Part 32: Test for vertical flame spread of vertically-mounted bunched wires or cables - Category A F/R".

Its scope clause reads: This document describes the Type AF/R test method for evaluating the vertical flame suppression of vertically installed bundled wires and cables under specified conditions. ability to spread.

This document applies to power cables with conductor cross-section greater than 35mm2.The cables are installed at intervals in front of and behind the test steel ladder, so as to The total nominal volume of non-metallic materials contained in the sample is 7L/m.

The fire time is 40min. This installation method is used in the cable specification Special cables for use in special installations are required. Type AF/R is not suitable for ordinary cables.

This test is used for type approval test. See Appendix A for the selection requirements of the test cables. The extent of damage to the flame spread through the cable specimen to measure.

This test procedure can be used to verify the ability of a cable to suppress the spread of flames. 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. Its clauses include terms and definitions.

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Document preview — GB/T 18380.32-2022

National Standard of the People's Republic of China

Classification: K 13

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Test device
5 Test Step
6 Evaluation of test results
7 Performance Requirements
8 Recheck step
9 Test report
Appendix A (Normative) Guidelines for the Selection of Cables and Optical Cables for Type Approval Test
Appendix B (Informative) Recommended Performance Requirements

1 Scope

This document describes the Type AF/R test method for evaluating the vertical flame suppression of vertically installed bundled wires and cables under specified conditions.

ability to spread.

This document applies to power cables with conductor cross-section greater than 35mm2.The cables are installed at intervals in front of and behind the test steel ladder, so as to

The total nominal volume of non-metallic materials contained in the sample is 7L/m. The fire time is 40min. This installation method is used in the cable specification

Special cables for use in special installations are required. Type AF/R is not suitable for ordinary cables.

This test is used for type approval test. See Appendix A for the selection requirements of the test cables. The extent of damage to the flame spread through the cable specimen to measure. This test procedure can be used to verify the ability of a cable to suppress the spread of flames.

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.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

IEC 60332-3-10 Fire tests for electrical and optical cables under flame conditions - Part 3-10.Vertically installed bundled wires and cables

Note. GB/T 18380.31-2022 Fire test of cables and optical cables under flame conditions - Part 31.Vertically installed bundled wire and cable flame

Straight propagation test test device (IEC 60332-3-10.2018, IDT)

IEC 60811-606 Test methods for non-metallic materials of electrical and optical cables - Part 606.Physical and chemical test methods for measuring density (E-

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 ignition source

A source of energy that initiates combustion.

[Source. ISO 13943.2017, 3.219]

3.2 charcoal

Carbon residues from pyrolysis or incomplete combustion. […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 22 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 18380.31-2022Tests on electric and optical fibre cables under fire conditions - Part 31: Test for vertical flame spread of vertically-mounted bunched wires or cables - Apparatus

IEC 60332 · IEC 60811

Cited by

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