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Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 21698-2022: Composite grounding conductor Status: Valid GB/T 21698: Historical versions
Basic dataStandard ID: GB/T 21698-2022 (GB/T21698-2022)Description (Translated English): Composite grounding conductor Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K10 Word Count Estimation: 25,240 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 21698-2022: Composite grounding conductor---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.Composite grounding conductor ICS 91.120.40 CCSK10 National Standards of People's Republic of China Replacing GB/T 21698-2008 Composite ground body Published on 2022-07-11 2023-02-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Product Category 2 5 Requirements 2 6 Test method 3 7 Inspection rules 12 8 Marking, packaging, transportation and storage 13 Appendix A (normative) Dimensions and tolerances of common composite grounding bodies 14 Appendix B (Informative) Calculation of Minimum Section of Grounding Body 16 Appendix C (normative) composite grounding body test procedure 17 Appendix D (normative) Calculation of power frequency high current test current 18 Appendix E (normative) Electrical Corrosion Resistance Test Procedure 19 Reference 20 forewordThis 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" drafted. This document replaces GB/T 21698-2008 "Technical Conditions for Composite Grounding Body". Compared with GB/T 21698-2008, except for structural adjustment In addition to editorial changes, the main technical changes are as follows. --- Changed the name of the standard, from "Technical Conditions for Composite Grounding Body" to "Compound Grounding Body"; --- Changed the scope of application of the standard (see Chapter 1, Chapter 1 of the.2008 edition); --- Changed the definition of the term "composite grounding body" (see 3.1, 3.1 of the.2008 edition); --- Delete the terms "electrolyte material (chemical filler)", "resistance reduction effect coefficient", "model coefficient" and "conductive rubber" (see the.2008 edition 3.2~3.5); --- Added the terms "resistance-reducing composite grounding body" and "anti-corrosion composite grounding body" (see 3.2, 3.3); --- Changed the product classification, deleted the model and meaning (see Chapter 4, Chapter 4 of the.2008 edition); --- Changed the requirements for appearance and size (see 5.1.1, 5.1 of the.2008 edition); --- Changed the requirements for the impact of products on the environment (see 5.1.2, 5.1 of the.2008 edition); --- Delete the requirements for electrolyte material, mechanical strength and conductive rubber properties (see 5.2, 5.4, 5.5 of the.2008 edition); --- Changed the requirements for electrical characteristics (see 5.2.1, 5.3.2, 5.3 of the.2008 edition); --- Increased the requirements for the resistance-reducing composite grounding body and the corresponding test methods (see 5.2, 6.4); --- Increased the requirements for anti-corrosion composite grounding body and the corresponding test methods (see 5.3, 6.5); --- Changed the appearance and size detection method (see 6.2, 6.2 of the.2008 edition); --- Increased the environmental impact detection method (see 6.3); --- Deleted the measurement of the coefficient of resistance reduction effect, the measurement of the contact resistance between the grounding body mandrel and the outer layer, the measurement of the resistivity of the electrolyte material, Test methods for electrolyte material mitigation characteristics test, mechanical strength test, and conductive adhesive performance measurement test (see.2008 edition 6.3, 6.4, 6.7, 6.8, 6.10, 6.11); --- Changed the impulse current withstand test (see 6.4.1.3, 6.5.2.1, 6.5 of the.2008 edition); --- Changed the power frequency current withstand test (see 6.4.1.4, 6.5.2.2, 6.6 of the.2008 edition); --- Changed the corrosion resistance test (see 6.4.2, 6.5.4, 6.9 of the.2008 edition); --- Changed the inspection rules (see Chapter 7, Chapter 7 of the.2008 edition); --- Changed the packaging requirements (see 8.2, 8.2 of the.2008 edition); --- Added Appendix A "Dimensions and tolerances of common composite grounding bodies"; --- Added Appendix B "Calculation of Minimum Section of Grounding Body"; --- Added Appendix C "Composite Grounding Body Test Procedure"; --- Added Appendix D "Calculation of Power Frequency High Current Test Current"; --- Added Appendix E "Electrical Corrosion Resistance Test Procedure". Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed and managed by the National Lightning Protection Standardization Technical Committee (SAC/TC258). This document is drafted by. State Grid Electric Power Research Institute Wuhan Nanrui Co., Ltd., China Electric Power Research Institute Co., Ltd. Wuhan Branch, Sichuan Zhongguang Lightning Protection Technology Co., Ltd., Sinopec Engineering Construction Co., Ltd., State Grid Hubei Electric Power Co., Ltd. Research Institute, Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Electric Power Research Institute of State Grid Henan Electric Power Company, State Grid Shandong Province Electric Power Company Research Institute of Electric Power, Wuhan Ailao High-tech Co., Ltd., Shanghai Geotechnical Engineering Testing Center Co., Ltd., State Grid Fu Jianshen Electric Power Co., Ltd. Electric Power Research Institute, Wuhan University, Chongqing Lightning Protection Center, Fuzhou Meteorological Bureau of Jiangxi Province, Hangzhou Tianhu Intelligence Section Technology Co., Ltd., Zhongshan Xinli Lightning Protection Technology Co., Ltd., Taixing Weite New Material Technology Co., Ltd., Shanghai University, Shenzhen Putai Electric Co., Ltd., China Standardization Association, State Grid Chongqing Electric Power Company Electric Power Research Institute. The main drafters of this document. Tang Liangliang, Li Jian, Yang Guohua, Wang Xianghan, Wang Shuguo, Li Zhizhong, Xu Xia, Yao Ximei, Xia Weijia, Feng Zhiqiang, Peng Xiangyang, Dong Manling, Yuan Haiyan, Luo Jiaming, Yuan Dengping, Fang Chaoying, Huang Daochun, Xu Wei, Yu Jianhua, Weng Jian, Ma Yongwei, Zhou Tuo, Zhou Qibin, Shi Bingyu, Bao Jiankang, Hu Danhui, Fan Mian. The previous versions of this document and its superseded documents are as follows. ---First published in.2008 as GB/T 21698-2008; ---This is the first revision. Composite ground body1 ScopeThis document specifies the product classification, requirements, test methods, inspection rules, marking, packaging, transportation and storage of composite grounding bodies. This document applies to the design, production and inspection of composite grounding bodies. This document does not apply to the grounding body formed by the composite process on the construction site.2 Normative referencesThe 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. GB/T 228.1 Tensile Test of Metallic Materials Part 1.Test Method at Room Temperature GB/T 239.1 Metallic Material Wire Part 1.Unidirectional Torsion Test Method GB/T 2694-2018 Technical conditions for the manufacture of transmission line towers GB/T 3048.2 Test methods for electrical properties of wires and cables - Part 2.Resistivity test of metallic materials GB/T 6462 Metal and Oxide Covering Layer Thickness Measurement Microscopy GB 6566 Limits of radionuclides in building materials GB/T 10125 Artificial Atmosphere Corrosion Test Salt Spray Test GB 15618 Soil Environmental Quality Agricultural Land Soil Pollution Risk Control Standard (Trial) GB/T 16545 Corrosion of Metals and Alloys - Removal of Corrosion Products on Corrosion Specimens GB/T 16927.1 High Voltage Test Technology Part 1.General Definitions and Test Requirements GB/T 16927.2 High Voltage Test Technology Part 2.Measurement System GB/T 33588.2 Lightning Protection System Components (LPSC) Part 2.Requirements for air terminals, down conductors and earth electrodes GB/T 50065 Grounding Design Specification for AC Electrical Installations3 Terms and DefinitionsThe following terms and definitions apply to this document. 3.1 A grounding body composed of two or more main substances with different physical or chemical properties. 3.2 A composite grounding body that reduces the grounding resistance by improving the soil environment around the grounding body or increasing the contact area between the grounding body and the soil. 3.3 It has the characteristics of resisting the erosion of moisture, salt, acid, alkali and other factors in the operating environment, and is used to slow down the corrosion of the composite grounding body. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 21698-2022_English be delivered?Answer: Upon your order, we will start to translate GB/T 21698-2022_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 21698-2022?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 21698-2022 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. |
