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GB/T 17651.2-2021 English PDF

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Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 17651.2-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$284.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 17651.2-2021: Measurement of smoke density of cables or optical fiber cables burning under defined conditions - Part 2: Test procedure and requirements
Status: Valid

GB/T 17651.2: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 17651.2-2021	284	Add to Cart	3 days	Measurement of smoke density of cables or optical fiber cables burning under defined conditions - Part 2: Test procedure and requirements	Valid
GB/T 17651.2-1998	199	Add to Cart	3 days	Measurement of smoke density of cables burning under defined conditions. Part 2: Test procedure and requirements	Obsolete

Similar standards

GB/T 12706.4 GB/T 19666 GB/T 18890.2 GB/T 17650.1 GB/T 17650.2 GB/T 17651.1

Basic data

Standard ID: GB/T 17651.2-2021 (GB/T17651.2-2021)
Description (Translated English): Measurement of smoke density of cables or optical fiber cables burning under defined conditions - Part 2: Test procedure and requirements
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K13
Word Count Estimation: 15,112
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 17651.2-2021: Measurement of smoke density of cables or optical fiber cables burning under defined conditions - Part 2: Test procedure and requirements

---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.
Measurement of smoke density of cables or optical fiber cables burning under defined conditions-Part 2.Test procedure and requirements ICS 29.060.01 CCSK13 National Standards of People's Republic of China Replace GB/T 17651.2-1998 Cable or fiber optic cable burns under certain conditions Determination of smoke density. Part 2.Test procedures and requirements (IEC 61034-2.2019, Measurementofsmokedensityofcablesburningunder Released on 2021-04-30 2021-11-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword Ⅲ Introduction Ⅴ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Test device 1 5 Test preparation 1 6 Test procedure 5 7 Evaluation of test results 5 8 Repeat the test procedure 5 9 Test report 6 Appendix A (informative) Principles of smoke measurement and guidelines for use 7 Appendix B (informative) Recommended performance requirements 9 Reference 10

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is the second part of GB/T 17651 "Determination of Smoke Density of Cables or Optical Cables Burning under Specific Conditions". GB/T 17651 The following parts have been released. ---Part 1.Test device; ---Part 2.Test procedures and requirements. This document replaces GB/T 17651.2-1998 "Determination of smoke density of cables or optical cables burning under specific conditions-Part 2.Tests Steps and Requirements'', compared with GB/T 17651.2-1998, in addition to structural adjustments and editorial changes, the main technical changes are as follows. ---Added the applicable documents of normative reference documents (see Chapter 2); --- Added applicable documents of terms and definitions (see Chapter 3); ---The general requirements for the selection of the number of specimens have been added (see 5.2.1.1); ---Modified the selection of the number of specimens with the outer diameter of the cable or optical cable less than or equal to 5.0mm and not less than 1.0mm (see 5.2.1.3, 5.2.1 of the.1998 edition); ---The selection of the number of specimens for non-circular cables has been added (see 5.2.1.4); ---Modified the installation requirements of the test samples (see 5.2.2, 5.2.2 of the.1998 edition); ---Modified the method for determining the end of the test (see 6.5, 6.5 in the.1998 edition); ---The calculation method of minimum light transmittance has been added (see 6.6); ---Modified the test result evaluation method (see Chapter 7, Chapter 7 of the.1998 edition); ---Modified the repeated test procedure (see Chapter 8, Chapter 8 of the.1998 edition); ---Added test report requirements (see Chapter 9); ---Added guidance on the principle and use of smoke measurement (see Appendix A); ---The recommended performance requirements have been added (see Appendix B). The translation method used in this document is equivalent to IEC 61034-2.2019 ``Determination of Smoke Density of Cables Burning under Specific Conditions Part 2. Test procedures and requirements". The Chinese documents that have consistent correspondence with the normatively cited international documents in this document are as follows. ---GB/T 2951.11-2008 General test methods for insulating and sheathing materials of electric and optical cables-Part 11.General test methods Method thickness and dimensions measurement mechanical performance test (IEC 60811-1-1.2001, IDT) ---GB/T 5169.1-2015 Fire hazard test of electric and electronic products Part 1.Fire test terminology (IEC 60695-4. 2012, IDT) ---GB/T 17651.1-2021 Determination of smoke density of cables or optical cables burning under specific conditions Part 1.Test device (IEC 61034-1.2019, IDT) This document has made the following editorial changes. ---In order to be consistent with the existing standard series, the name of this document is changed to "Determination of Smoke Density of Cable or Optical Cable Burning under Specific Conditions" Part 2.Test Procedures and Requirements; ---In order to match the sequence of pictures and texts, the positions of Fig. 2 and Fig. 3 are exchanged; ---According to the provisions of GB/T 1.1-2020, change the number of articles starting from 0 in the document to starting from 1; ---Adjust the unquoted IEC Guide104 in the main text of IEC 61034-2.2019 to the reference. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China Electrical Equipment Industry Association. This document is under the jurisdiction of the National Wire and Cable Standardization Technical Committee (SAC/TC213). Drafting organizations of this document. Shanghai National Cable Testing Center Co., Ltd., Jiangsu Zhongtian Technology Co., Ltd., Shanghai Capot cable materials Co., Ltd., Shanghai Cable Research Institute Co., Ltd., Shanghai Qifan Cable Co., Ltd., Zhongtian Technology Equipment Cable Co., Ltd., Baosheng Technology Innovation Co., Ltd., Hangzhou Cable Co., Ltd., Jiangsu Shangshang Cable Group Co., Ltd., Yangzhou Shuguang Cable Co., Ltd. Company, National Fireproof Building Material Quality Supervision and Inspection Center, Wuxi Jiangnan Cable Co., Ltd., Guangzhou Nanyang Cable Co., Ltd., Hunan Valin Cable Co., Ltd., Jinbei Electric Co., Ltd., Shenyang Jiewei Technology Development Co., Ltd., Zhejiang Wanma Co., Ltd., Jiangsu Hengtong Power Cable Co., Ltd., Far East Cable Co., Ltd., Zhongchen Cable Co., Ltd., Ningbo Qiguan Cable Co., Ltd., Changfeng Cable Co., Ltd., Sunway Co., Ltd., TBEA Shandong Luneng Taishan Cable Co., Ltd., Fujian Nanping Sun Cable Co., Ltd. Company, Shanghai Pudong Wire and Cable (Group) Co., Ltd., Shanghai Nanyang-Fujikura Cable Co., Ltd., Hebei Huatong Cable Group Co., Ltd. Company, Jiangsu Yongding Co., Ltd., Shanghai Moen Electric Co., Ltd., Zhejiang Chenguang Cable Co., Ltd., CGN High-tech Nuclear Materials Technology (Suzhou) Co., Ltd., Hangzhou Futong Communication Technology Co., Ltd., Shenzhen Xinaoke Cable Co., Ltd., Hebei Xinbaofeng Wire and Electricity Co., Ltd. Cable Co., Ltd., Kunming Cable Group Kun Electric Cable Co., Ltd., Shenyang Guhe Cable Co., Ltd., Hainan Weite Cable Co., Ltd., Jinlong Yu Group Co., Ltd., Guangdong Cable Factory Co., Ltd. The main drafters of this document. Peng Chunyao, Xie Shuhong, Duan Chunlai, Hong Ningning, Gao Wenqi, Xie Xiangqian, Fang Quansheng, Teng Zhaofeng, Ling Guozhen, Liang Guohua, Feng Jun, Ma Zhuang, Wang Zhihui, Zhang Gongzhuo, Yang Wenfeng, Xie Guiqin, Liu Huanxin, Zheng Jianping, Xu Jing, Xu Qifa, Wen Shanghai, Kong Deqing, Shen Zhifei, Long Qin, Fan Defa, Chen Wei, Cui Xuelin, Dou Limei, Chen Xiaohong, Hu Shaozhong, Yue Zhenguo, Fei Churan, Yu Youji, Li Fulong, Wujian Province, Jiang Weimin, Zhang Daoli, Li Ju, Li Yunhuan, Gao Weihong. The previous versions of this document and the documents replaced are as follows. ---First released in.1990 as GB 12666.7-1990; ---The first revision in.1998 was GB/T 17651.2-1998; ---This is the second revision.

Introduction

The smoke density of a cable or optical cable is an important indicator for evaluating the burning performance of a cable or optical cable. In the event of a fire, the cable or optical cable The low-smoke characteristics of the company ensure the safe evacuation of all types of personnel and the normal development of fire and rescue work, and it is important for social public safety and reducing fire losses. Has an important role. GB/T 17651 is a basic test method for determining the smoke emission of cables or optical cables in the event of a fire. GB/T 17651 It aims to establish a test method standard for the smoke density of different wire and cable or optical cable products burning under specific conditions. It is proposed to be composed of the following two parts. Sub-composition. ---Part 1.Test device. The purpose is to establish a test suitable for the determination of the smoke density of cables or optical cables burning under specific conditions. Requirements for testing devices and qualification approval procedures for testing devices. ---Part 2.Test procedures and requirements. The purpose is to establish a test for the determination of the smoke density of a cable or optical cable burning under specific conditions. Inspection procedures and recommended compliance requirements. GB/T 17651 is issued in two parts, which together specify a method for determining the smoke density of a cable or optical cable burning under specific conditions. law. Users of this test method should note that the number of samples and bundles of cables or optical cables in the test may not represent the actual installation. Happening. Part 1 introduces in detail the test equipment and the combination of the test equipment used to determine the smoke density of cables or optical cables burning under specific conditions. Lattice recognition. It includes a test chamber with a volume of 27m3, a light measuring device for light measurement, standard fire source, smoke mixing, blank test and test equipment Detailed information about the conformity accreditation procedures set up. Appendix A provides guidance on various aspects of the test device. It may be useful in case inspection. Part 2 gives the test procedures, and when specific requirements are not given in a specific cable standard or specification, the informative appendix gives a recommendation. Recommended compliance requirements. Cable or fiber optic cable burns under certain conditions Determination of smoke density. Part 2.Test procedures and requirements

1 Scope

This document describes the test procedure used to determine the density of smoke released by a cable or optical fiber The preparation, assembling and burning methods of test cables or optical cable samples are recommended for the requirements for evaluating test results.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. IEC 60695-4 Fire hazard testing for electrical and electronic products Part 4.Firehazard testing terms (Firehazard testing- Part 4.Terminologyconcerningfiretestsforelectrotechnicalproducts) IEC 60811-203 General test methods for non-metallic materials of electric and optical cables-Part 203.General test methods Thickness and outer diameter Shape size measurement (Electricandopticalfibrecables-Testmethodsfornon-metalicmaterials-Part 203. Generaltests-Measurementofoveraldimensions) IEC 61034-1 Determination of smoke density of cables or optical cables burning under specific conditions Part 1.Test equipment (Measurement ofsmokedensityofcablesburningunderdefinedconditions-Part 1.Testapparatus) ISO /IEC 13943.2000 Firesafety-Vocabulary

3 Terms and definitions

The terms and definitions defined by IEC 60695-4 and ISO /IEC 13943.2000 apply to this document.

4 Test device

The test procedures specified in this document should use the test equipment given by IEC 61034-1, namely the test box, the light measuring device and the standard fire source. get on.

5 Test preparation

5.1 Sample preparation The sample should be composed of one or more 1.00m±0.05m long cables or optical cables that have been carefully straightened, and then should be at 23℃±5℃ Leave it for at least 16h. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 17651.2-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 17651.2-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 17651.2-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 17651.2-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 17651.2-2021?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 17651.2-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.