GB/T 19666-2019 PDF English
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GB/T 19666: Historical versions
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| GB/T 19666-2019 | 375 | Add to Cart | Auto, 9 seconds. | General rules for flame retardant and fire resistant electric wires and cables or optical fiber cables | Valid |
| GB/T 19666-2005 | 75 | Add to Cart | Auto, 9 seconds. | Flame retardant and fire resistant wires and cables | Obsolete |
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GB/T 19666-2019: General rules for flame retardant and fire resistant electric wires and cables or optical fiber cables
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NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.060.20 K 13 Replacing GB/T 19666-2005 General Rules for Flame Retardant and Fire Resistant Electric Wires and Cables or Optical Fiber Cables Issued on. DECEMBER 10, 2019 Implemented on. JULY 01, 2020 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3 1 Scope... 5 2 Normative References... 5 3 Terms and Definitions... 6 4 General... 7 5 Product Model... 7 5.1 Code and combination of combustion characteristics... 7 5.2 Composition of product model... 9 5.3 Expression of product... 10 6 Requirements for Combustion Properties... 10 6.1 Flame retardance... 10 6.2 Fire resistance... 11 6.3 Halogen free performance... 12 6.4 Low smoke performance... 13 6.5 Low toxicity performance... 13 7 Technical Requirements... 14 7.1 Flame-retardant wire and cable or optical fiber cable series... 14 7.2 Fire-resistant wire and cable or optical fiber cable series... 15 8 Acceptance Rules... 16 Appendix A (Normative) Water Spray Test Method... 17 Appendix B (Normative) Water Spray Test Method... 19 Appendix C (Normative) Toxicity Indicator Test Method... 21 Bibliography... 271 Scope
This Standard specifies the code, technical requirements, test methods and acceptance rules for the combustion characteristics of flame-retardant and fire-resistant wires, cables or optical fiber cables, including halogen-free, low-smoke, low-toxicity, flame-retardant and fire-resistant combustion characteristics. This Standard applies to halogen-containing, halogen-free, low-smoke, low-toxic flame- retardant and fire-resistant wire and cable or optical fiber cable products.2 Normative References
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this document. GB/T 4208-2017 Degrees of Protection Provided by Enclosure (IP Code) GB/T 17650.1 Test on Gases Evolved During Combustion of Materials from Cables or Optical Fiber Cables-Part 1.Determination of the Halogen Acid Gas Content GB/T 17650.2 Test on Gases Evolved During Combustion of Materials from Cables or Optical Fiber Cables - Part 2.Determination of Acidity (by pH Measurement) and Conductivity GB/T 17651.2 Measurement of Smoke Density of Cables or Optical Fiber Cables Burning under Defined Conditions - Part 2.Test Procedure and Requirements GB/T 18380.12 Test on Electric and Optical Fiber Cables under Fire Conditions - Part 12. Test for Vertical Flame Propagation for a Single Insulated Wire or Cable - Procedure for 1kW Pre-Mixed Flame GB/T 18380.13 Tests on Electric and Optical Fiber Cables under Fire Conditions - Part 13. Test for Vertical Flame Propagation for a Single Insulated Wire or Cable - Procedure for Determination of Flaming Droplets/Particles GB/T 18380.22 Tests on Electric and Optical Fiber Cables under Fire Conditions - Part 22. Test for Vertical Flame Propagation for a Single Small Insulated Wire or Cable - Procedure for Diffusion Flame3 Terms and Definitions
For the purposes of this Document, the following terms and definitions apply. 3.1 Flame retardance The characteristics that, when the sample is burned under specified conditions, the spread of flame on the sample is only within a limited range after the ignition source is removed, and it has the capability of preventing or delaying the occurrence or spread of flame. 3.2 Fire resistance The characteristic that a specimen can continue to operate under specified conditions when it is burned under specified ignition source and time. 3.3 Halogen free The characteristic that the halogen (fluorine, chlorine, bromine, iodine) content of the gas released during combustion is all less than or equal to 1.0 mg/g. 3.4 Low smoke The characteristic that the concentration of smoke produced by burning does not reduce visibility (light transmittance) to the extent that it affects escape. 3.5 Low toxicity The characteristic that the toxic effect and concentration of the toxic fumes produced during combustion shall not cause the living organisms to die within 30min.4 General
The combustion characteristics of flame-retardant and fire-resistant wire and cable or optical fiber cable products shall comply with the requirements of this Standard; and other properties other than combustion characteristics shall comply with the requirements of the corresponding product standards.5 Product Model
5.1 Code and combination of combustion characteristics 5.1.1 Code of combustion characteristics The code of combustion characteristics can refer to Table 1. 5.1.2 Code combination of combustion characteristics Flame retardant series of code combinations of combustion characteristics are shown in Table 2; fire-resistant series of code combinations of combustion characteristics are shown in Table 3.When there are multiple requirements for combustion characteristics, the code shall be combined according to the sequence of halogen-free (halogen-containing omitted), low smoke, low toxicity, flame retardance and fire-resistance. 5.2 Composition of product model Flame-retardant and fire-resistant wire and cable or optical fiber cable product model consists of the two parts, namely, the code of combustion characteristics and the model of relevant wire and cable or optical fiber cable, see Figure 1. or Optical Fiber Cable 5.3 Expression of product The flame-retardance and fire-resistance wire and cable or optical fiber cable product shall be expressed by the following contents, such as code of combustion characteristics, product model, specification, this Standard number and product standard number.6 Requirements for Combustion Properties
6.1 Flame retardance 6.1.1 Single-piece flame retardance The single-piece flame retardance shall meet the requirements of Table 4. 6.1.2 Bunched flame retardance The bunched flame retardance shall meet the requirements of Table 5. 6.2 Fire resistance The fire resistance shall meet the requirements of Table 6. 6.4 Low smoke performance The low smoke performance shall meet the requirements of Table 8. 6.5 Low toxicity performance Test methods and analytical methods can refer to Appendix C. When the application occasions of the wire and cable or optical fiber cable have low toxicity requirements, it shall use halogen-free, low smoke and low toxicity flame retardant and / or fire-resistant wire and cable or optical fiber cable, the toxicity index can be determined through negotiation between the manufacturer and the purchaser. If not specified, the recommended toxicity indicator is less than or equal to 5.7 Technical Requirements
7.1 Flame-retardant wire and cable or optical fiber cable series 7.1.1 (Halogen-containing) flame-retardant wire and cable or optical fiber cable (Halogen-containing) flame-retardant wire and cable or optical fiber cable are manufactured by using halogen-containing materials; the products of combustion are more corrosive; the smoke from combustion is denser (lower transmittance). 7.1.2 Halogen-free, low-smoke flame-retardant wire and cable or optical fiber cable The non-metallic materials used by the halogen-free, low-smoke flame-retardant wire and cable or optical fiber cable have very little halogen content; the combustion products are of low corrosion; the combustion generated smoke is less (higher transmittance). The following categories can be made according to the flame-retardant characteristics. 7.1.3 Halogen-free, low-smoke, low-toxicity flame-retardant wire and cable or optical fiber cable The non-metallic materials used by the halogen-free, low smoke and low toxicity flame- retardant wire and cable or optical fiber cable shall have very little halogen content; the combustion products are of lower corrosion and toxicity; the combustion products have lower smoke (higher transmittance). 7.2 Fire-resistant wire and cable or optical fiber cable series The cable at the rated voltage of 0.6/1kV and below shall use the copper conductors; the insulation shall have fire-resistant characteristics; otherwise, the conductor and / or cable core shall be set with fire-resistant layer. Data cables shall be set up on the cable core of the fire- resistant layer.8 Acceptance Rules
8.1 The basic performance of the flame-retardant and fire-resistant wire and cable or optical fiber cable products shall meet the requirements of the relevant product standards. When the product standard does not specify the flame resistance, fire resistance, halogen-free performance, low smoke performance and low toxicity performance indicators, then the provisions of this standard shall be met. 8.2 The combustion performance requirements specified in this Standard include flame retardance (see 6.1), fire resistance (see 6.2), halogen-free performance (see 6.3), low smoke performance (see 6.4) and low toxicity performance (see 6.5), which are the type test items. 8.3 The security requirements of flame-retardant and fire-resistant wire and cable or optical fiber cable are higher. Given the actual situation of wire and cable or optical fiber cable materials often changes, the manufacturers shall conduct strict quality control; establish the appropriate intermediate quality control means; develop the appropriate combustion performance sampling test cycle; so as to ensure product quality. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
