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GB/T 7424.22-2021 English PDF

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GB/T 7424.22-2021: Optical fibre cable generic specification - Part 22: Basic optical cable test procedures - Environmental test methods
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GB/T 7424.22-2021English539 Add to Cart 5 days [Need to translate] Optical fibre cable generic specification - Part 22: Basic optical cable test procedures - Environmental test methods Valid GB/T 7424.22-2021

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Basic data

Standard ID GB/T 7424.22-2021 (GB/T7424.22-2021)
Description (Translated English) Optical fibre cable generic specification - Part 22: Basic optical cable test procedures - Environmental test methods
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard M33
Word Count Estimation 29,230
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 7424.22-2021: Optical fibre cable generic specification - Part 22: Basic optical cable test procedures - Environmental test methods


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Optical fibre cable generic specification-Part 22.Basic optical cable test procedures-Environmental test methods ICS 33.180.10 M33 National Standards of People's Republic of China Partly replace GB/T 7424.2-2008 General Specification for Optical Fiber Cables Part 22.Basic Test Methods for Optical Fiber Cables Environmental performance test method (IEC 60794-1-22.2017,Opticalfibrecables-Part 1-22.Genericspecification- MOD) Released on 2021-04-30 and implemented on 2021-11-01 State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Method F1.Temperature Cycle 1 4 Method F5.Water seepage 5 5 Method F7.Nuclear radiation 9 6 Method F8.Air resistance 9 7 Method F9.Aging 10 8 Method F10.Underwater optical cable resistance to hydrostatic pressure 11 9 Method F11.Shrinkage of the sheath (optical cable used for connecting flexible cords) 12 10 Method F12.Temperature cycling of optical fiber cable for terminal assembly 13 11 Method F13.Microtubes are resistant to air pressure 14 12 Method F14.UV resistance 15 13 Method F15.Freezing on the outside of the fiber optic cable 16 14 Method F16.Compound trickle 17 15 Method F17.Cable shrinkage (fiber extension) 19 16 Method F18.Straight through loose tube temperature cycle in splicing device 21 Appendix A (informative appendix) Structural changes in this part compared with IEC 60794-1-22.2017 24 Appendix B (Normative Appendix) Color Persistence 25

Foreword

GB/T 7424 is divided into the following 9 parts. ---Optical Cable General Specification Part 1.General; ---General Specification for Optical Cables Part 20.General Principles and Definitions of Basic Test Methods for Optical Cables; ---General Specification for Optical Cables Part 21.Basic Test Methods for Optical Cables, Mechanical Performance Test Methods; ---General Specification for Optical Cables Part 22.Basic Test Methods for Optical Cables, Environmental Performance Test Methods; ---General Specification for Optical Cables Part 23.Basic Test Methods for Optical Cables Test Methods for Optical Cable Components; ---General Specification for Optical Cables Part 24.Basic Test Methods for Optical Cables, Electrical Test Methods; ---Optical Cable Part 3.Sectional Specification for Outdoor Optical Cable; ---Optical Cable Part 4.Sectional Specification Optical Fiber Composite Overhead Ground Wire; ---Optical Cable Part 5.Sectional Specification for Miniature Cables and Optical Fiber Units for Air Blown Installation. This part is part 22 of GB/T 7424. This section was drafted in accordance with the rules given in GB/T 1.1-2009. GB/T 7424.20~GB/T 7424.24 jointly replace GB/T 7424.2-2008 "General Specification for Optical Cable Part 2.Optical Cable Basic experiment method". This part replaces Chapter 21 to Chapter 28 in GB/T 7424.2-2008.This part and GB/T 7424.2-2008 Compared with Chapter 21~Chapter 28, the main technical changes are as follows. ---Modified method F1 temperature cycle sample pretreatment [see 3.4.2,.2008 edition of 21.4b)]; ---Added method F1 temperature cycle program suitability requirements [see 3.4.3h)]; ---Added the requirements of the heating rate and cooling rate in the method F1 temperature cycle (see 3.4.3); --- Added Table 1 "The minimum thermal equilibrium time t1 for a given sample mass" (see Table 1); --- Deleted "Method F3.Sheath Integrity" (see Chapter 22 of the.2008 edition); ---Added "Method F5C" (see 4.2.3); ---Added the requirements for water in method F5 (see 4.3.2); ---Added the content of "Method F9.Aging" (see Chapter 7); ---Added the content of "Method F11.Shrinkage of the sheath (optical cable used to connect the flexible cord)" (see Chapter 9); ---Added the content of "Method F12.Temperature Cycle of Optical Cable for Terminal Assembly" (see Chapter 10); ---Added the content of "Method F13.Microtubes withstand air pressure" (see Chapter 11); ---Added the content of "Method F14.UV resistance" (see Chapter 12); ---Added the content of "Method F15.External Freezing of Optical Cable" (see Chapter 13); --- Change the method number of compound trickle from F6 to F16 (see Chapter 14, Chapter 24 of the.2008 edition); ---Modified the number and length of the composite trickle sample (see 14.2.2, 24.2 in the.2008 edition); ---Modified the sample preparation requirements of the compound trickle [see 14.2.3a), 24.2c) 1) of the.2008 edition]; --- Added the content of "Method F17.Cable shrinkage (fiber extension)" (see Chapter 15); ---Added the content of "Method F18.Straight through loose tube temperature cycle in splicing device" (see Chapter 16); ---The normative Appendix B "Persistence of Color" has been added. This part uses the redrafting method to modify and adopt IEC 60794-1-22.2017 ``Optical Cable Part 1-22.General Specification Optical Cable Basic Test Environmental performance test method." Compared with IEC 60794-1-22.2017, this part has more structural adjustments. Appendix A lists this part and IEC 60794-1-22. The.2017 chapter number comparison list. The technical differences between this part and IEC 60794-1-22.2017 and the reasons are as follows. ---Regarding normative reference documents, this section has made adjustments with technical differences to adapt to my country's technical conditions and adjustments. The situation is collectively reflected in Chapter 2 "Normative Reference Documents", and the specific adjustments are as follows. ● Replace IEC 60793-1-40 with GB/T 15972.40 which is modified to adopt international standards; ● Replace IEC 60793-1-46 with GB/T 15972.46 which is modified to adopt international standards; ● Replace IEC 60793-1-54 with GB/T 15972.54 which is modified to adopt international standards; ● Replace ISO 4892-2 with GB/T 16422.2 which is equivalent to adopting international standards; ● Replace ISO 4892-3 with GB/T 16422.3, which is equivalent to adopting international standards; ● Removed IEC 60304; ● Removed IEC 60794-1-1; ● Removed IEC 60811-503; ● Added reference to GB/T 6995.2; ● Added reference to GB/T 7424.20-2021; ● Added reference to GB/T 26168.1. --- In 4.1, "F5C can choose one of the 3 methods". ---4.5 added "within the specified test time". --- In 8.3, the "minimum length" is changed to the "tested length". --- "(Jumper)" is added in 9.1. ---9.3 Modify the "minimum resolution 0.1%" to "minimum resolution not greater than 0.5mm". --- In 9.5, the "shrinkage rate of the sheath shall not exceed the specified value of the detailed specification" is revised to "the 5 samples after the last cycle are relative to the initial The average sheath shrinkage of the initial length shall not exceed the value specified in the detailed specification". --- 13.2 "The diameter of the loop is specified by the detailed specification" is added. ---13.6 Add "loop diameter" to the details to be specified. ---Added Figure 11. This section has made the following editorial changes. --- Change the standard name to "General Specification for Optical Cables Part 22.Basic Test Methods for Optical Cables and Environmental Performance Test Methods." Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents. This part was proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This part is under the jurisdiction of the National Communication Standardization Technical Committee (SAC/TC485). Drafting organizations of this section. Chengdu Tairui Communication Equipment Testing Co., Ltd., Sichuan Huiyuan Optical Communication Co., Ltd., Chengdu Datang Cable Co., Ltd. Company, Jiangsu Hengtong Optoelectronics Co., Ltd., YOFC Co., Ltd., Jiangsu Yongding Co., Ltd., Fiberhome Technology Group Co., Ltd., Jiangsu Nanfang Communication Technology Co., Ltd., Tongding Internet Information Co., Ltd., Nanjing Huaxin Fujikura Optical Communication Co., Ltd., Jiang Su Tongguang Information Co., Ltd. The main drafters of this section. Song Zhituo, Shi Bin, Zhao Qiuxiang, Luo Yi, Xue Mengchi, Li Yingzhi, Peng Yuan, Liu Cheng, Li Jing, Lu Yunyun, Duan Jianbin, Chen Xiaohong, Huang Zhengou, Ji Zhong, Wang Xiaoquan, Liu Yuqin. The previous releases of the standards replaced by this part are as follows. ---GB/T 7425 (all parts)-1987; ---GB/T 8405 (all parts)-1987; ---GB/T 7424.1-1998 (Chapter 3 and Chapter 6); ---GB/T 7424.2-2002, GB/T 7424.2-2008 (Chapter 21~Chapter 28). General Specification for Optical Fiber Cables Part 22.Basic Test Methods for Optical Fiber Cables Environmental performance test method

1 Scope

This part of GB/T 7424 specifies the purpose, samples, equipment, procedures, requirements and to be specified of the test methods for the environmental performance of optical cables detail. This section applies to optical cables, including optical fiber units, micro-tube optical fiber units, etc., and also applies to photoelectric hybrid cables.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 2423.22-2012 Environmental Test Part 2.Test Method Test N. Temperature Change (IEC 60068-2-14. 2009, IDT) GB/T 6995.2 Wire and Cable Identification Marking Method Part 2.Standard Color GB/T 7424.20-2021 General Specification for Optical Fiber Cables Part 20.General Principles and Definitions of Basic Test Methods for Optical Fiber Cables (IEC 60794-1-2.2017, MOD) GB/T 15972.40 Specification for optical fiber test methods Part 40.Measurement methods and test procedures for transmission characteristics and optical characteristics Attenuation (GB/T 15972.40-2008, IEC 60793-1-40.2001, MOD) GB/T 15972.46 Specification for optical fiber test methods Part 46.Measurement methods and test procedures for transmission characteristics and optical characteristics Transmittance change (GB/T 15972.46-2008, IEC 60793-1-46.2001, MOD) GB/T 15972.54 Optical fiber test method specification Part 54.Environmental performance measurement method and test procedure Gamma irradiation (GB/T 15972.54-2008, IEC 60793-1-54.2003, MOD) GB/T 16422.2 Plastic laboratory light source exposure test method Part 2.Xenon arc lamp (GB/T 16422.2-2014, ISO 4892-2.2006, IDT) GB/T 16422.3 Plastic laboratory light source exposure test method Part 3.Fluorescent ultraviolet lamp (GB/T 16422.3-2014, ISO 4892-3.2006, IDT) GB/T 26168.1 Electrical insulating materials to determine the effects of ionizing radiation Part 1.Radiation interaction and dosimetry (GB/T 26168.1-2018, IEC 60544-1.2013, IDT) 3 Method F1.Temperature cycling 3.1 Purpose This test is suitable for testing the optical cable with temperature cycling to determine the stability of the attenuation of the optical cable when subjected to temperature changes. This test is also available For the evaluation of loose tube or other independent optical cable components, the specific requirements are specified in the detailed specification. The attenuation change of the optical cable may occur with temperature changes, which is usually due to the coefficient of thermal expansion of the optical fiber and the strength of the optical cable strength member and sheath. Different coefficients of thermal expansion are the result of bending or straining of the optical fiber. The test conditions for temperature dependence measurement should simulate the worst case. This test is used to monitor the performance of the optical cable within the temperature range that may occur during storage, transportation and use, or at a selected temperature.

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