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Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 28819-2023: Aluminium alloy enclosures for gas-filled high-voltage switchgear Status: Valid GB/T 28819: Historical versions
Basic dataStandard ID: GB/T 28819-2023 (GB/T28819-2023)Description (Translated English): Aluminium alloy enclosures for gas-filled high-voltage switchgear Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K43 Classification of International Standard: 29.130.10 Word Count Estimation: 42,454 Date of Issue: 2023-12-28 Date of Implementation: 2024-07-01 Older Standard (superseded by this standard): GB/T 28819-2012 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 28819-2023: Aluminium alloy enclosures for gas-filled high-voltage switchgear---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.ICS 29:130:10 CCSK43 National Standards of People's Republic of China Replace GB/T 28819-2012 Aluminum alloy housing for inflatable high-voltage switchgear Published on 2023-12-28 2024-07-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee Table of contentsPreface III Introduction V 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Normal and special conditions of use 5 5 Materials 5 5:1 Material selection 5 5:2 Chemical analysis 7 6 design 7 6:1 General requirements 7 6:2 Calculation method 8 6:3 Manholes and inspection openings15 7 Manufacturing and Process15 7:1 Deformed aluminum alloy 15 7:2 Cast aluminum alloy 18 8 Bug fixes 19 8:1 Weld repair 19 8:2 Repair of casting defects19 9 Heat treatment of cast aluminum alloy 21 9:1 Heat treatment procedure 21 9:2 Heating method 21 9:3 Heat treatment process 22 9:4 Calibration of furnace temperature 22 9:5 Heat treatment chart 23 10 Inspection, testing and quality assurance23 10:1 General 23 10:2 Welding process technical specifications 23 10:3 Welder skills test 23 10:4 Non-destructive testing 23 10:5 Pressure test 26 10:6 Sealing test 27 10:7 Quality Assurance27 11 Pressure relief device 28 11:1 General 28 11:2 Explosion disc 28 11:3 Automatic closing of pressure relief valve 28 11:4 Non-automatic closing pressure relief valve 28 Appendix A (normative) Cast aluminum shell welder skills test 29 A:1 Test piece 29 A:2 Assessment of welder skills test 29 A:2:1 Appearance inspection and color penetrant inspection 29 A:2:2 Macroscopic sample inspection 29 A:2:3 Inspection of tensile specimens 29 A:3 Welder Qualification 29 Appendix B (normative) Welding process qualification of cast-welded structures 30 B:1 General 30 B:2 Welding procedure qualification rules30 B:3 Test requirements and result evaluation30 B:3:1 Test piece preparation 30 B:3:2 Inspection of butt weld specimens and specimens 30 B:3:3 Inspection of fillet weld specimens and specimens 31 B:4 Welding procedure instructions and welding procedure qualification report32 Reference 33ForewordThis document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting: This document replaces GB/T 28819-2012 "Aluminum alloy shell for inflatable high-voltage switchgear" and is consistent with GB/T 28819-2012 In addition to structural adjustments and editorial changes, the main technical changes are as follows: ---Deleted the terms "manufacturer", "designer", "ductility" and "fatigue" (see 3:2, 3:3, 3:13, 3:14 of the:2012 edition); ---Changed the definitions of "casing", "aluminum alloy", "cold cracking" and "pores" (see 3:1, 3:8, 3:12:4, 3:13,:2012 version of 3:1, 3:8, 3:11:3, 3:11:6); ---Added "normal load", "abnormal load", "batch", "splash", "unfused", "slag inclusion", "porosity", "cold isolation" and "yield strength": language (see 3:4, 3:5, 3:9, 3:11:2, 3:11:3, 3:11:4, 3:12:2, 3:12:6, 3:16, etc:); ---Added "normal and special conditions of use" (see Chapter 4); --- Added requirements for the elongation after fracture of the selected deformed aluminum alloy and cast aluminum alloy (see 5:1); ---The categories and selection methods of aluminum alloy materials have been changed, from 6 tables to 2 tables (see Table 1, Table 2,:2012 version of Table 1, Table 2, Table 3, Table 4, Table 5, Table 6); ---Added relevant requirements for the hydrogen content of metal melts used to manufacture welding component materials (see 5:2); ---Added analysis and design methods and relevant requirements for the selection of allowable stresses for different materials (see 6:1); ---Added relevant requirements such as applicable methods for allowable stress of various types of shells (see 6:2:1); ---Changed the "calculation of shell wall thickness and flange thickness" (see 6:2:2, 5:7 of the:2012 edition); ---Changed the content of "Allowable stress of combined shell" (see 6:2:3:3, 5:6:2 of the:2012 edition); --- Added the content of "Evaluating mechanical strength using analysis and design method" (see 6:2:4); ---Added the content of "welded joint coefficient" (see 6:2:6); ---Deleted the content of "Manufacturing of butterfly end caps" (see 6:1:5 of the:2012 version); ---Changed the content of "assembly tolerance" (see 7:1:5, 6:1:6 of the:2012 version); ---Changed the relevant content of "Welding Assembly" (see 7:1:7, 6:1:8 of the:2012 version); ---Deleted the content of "Attachments" (see 6:1:8:1 of the:2012 version); ---Added "friction stir welding (FSW)" welding method and related requirements (see 7:1:8 and 7:1:10); --- Added relevant requirements for "cold core box" (see 7:2:1); ---Changed the content of "cast aluminum alloy manufacturing" (see 7:2:1, 6:2:1 of the:2012 version); --- Added relevant requirements for "cast aluminum alloy sampling" (see 7:2:5:1); ---Added "Defect Repair" (see Chapter 8); ---Changed the content of "weld repair" (see 8:1, 7:4:1:9 of the:2012 version); ---Changed the content of "Utilization of Castings" in "Repair of Defects" (see 8:2:3, 6:2:7:2:4 of the:2012 edition); ---Changed the content of "Impregnation of castings" in "Repair of defects" (see 8:2:6, 6:2:7:3 of the:2012 version); ---Added "cast aluminum alloy heat treatment" (see Chapter 9); ---Changed the content of "heat treatment process" (see 9:3, 6:2:8:3 of the:2012 edition); ---Changed the content of "Welding Process Technical Specifications" (see 10:2, 7:2 of the:2012 edition); ---Changed the content of "Welder Skills Test" (see 10:3, 7:3 of the:2012 edition); ---Changed "wrought aluminum and aluminum alloys" to "deformed aluminum alloys", and modified the content (see 10:4:1, 7:4:1 of the:2012 version); ---Deleted the contents of "minimum acceptance level" and "defect assessment" (see 7:4:1:7 and 7:4:1:8 of the:2012 version); ---Changed the content of "pressure test" (see 10:5, 7:5 of the:2012 edition); ---Changed the content of "Quality Assurance" (see Chapter 9 of 10:7,:2012 edition); ---Deleted the normative appendix A, appendix B, and informative appendix D of the:2012 version; ---Added "Welding Process Qualification of Cast Welded Structures" (see Appendix B): Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents: This document is proposed by the China Electrical Equipment Industry Association: This document is under the jurisdiction of the National High Voltage Switchgear Standardization Technical Committee (SAC/TC65): This document was drafted by: Pinggao Group Co:, Ltd:, Xi'an High Voltage Electrical Apparatus Research Institute Co:, Ltd:, Xi'an Xidian Switch Electric Co:, Ltd: Company, Jiangsu Jinxin Electric Co:, Ltd:, Shaanxi Shanrui Electric Co:, Ltd:, New Northeast Electric Group High Voltage Switch Co:, Ltd:, Jiangsu Yonglong Electric Gas Co:, Ltd:, Taixing Changjiang Electric Power Equipment Co:, Ltd:, ABB (China) Co:, Ltd:, Henan Pinggao Electric Co:, Ltd:, Fujian Yuneng Electric Power Equipment Co:, Ltd:, Qingdao Shangke High Voltage Electrical Apparatus Research Institute Co:, Ltd:, Suzhou Electrical Apparatus Research Institute Co:, Ltd: Division, Xiamen ABB High Voltage Switch Co:, Ltd:, Qingdao Teruid Electric Co:, Ltd:, Xiamen Huadian Switch Co:, Ltd:, and Taikai Group have Co:, Ltd:, Risheng Group Co:, Ltd:, Qingdao Yihe Electric Group Co:, Ltd:, Chint Electric Co:, Ltd:, Zhongke Lixiang Technology Co:, Ltd: Co:, Ltd:, State Grid Ningxia Electric Power Co:, Ltd: Electric Power Research Institute, Cooper (Ningbo) Electric Co:, Ltd:, Zhejiang Bada Electronic Instrument Co:, Ltd: Co:, Ltd: Shitong Electric Branch, Jiangsu Henggao Electric Manufacturing Co:, Ltd:, TBEA Zhongfa Shanghai High Voltage Switch Co:, Ltd:, Shanghai Ximen Zi High Voltage Switch Co:, Ltd:, Xi'an Xidian High Voltage Switch Co:, Ltd:, China General Nuclear Power Nuclear Power Operation Co:, Ltd:, Shandong Dachi High Voltage Switch Co:, Ltd:, Shanghai Xidian High Voltage Switch Co:, Ltd: The main drafters of this document: Zhong Jianying, Tian Enwen, Wang Xiangke, Jia Xinyu, Guo Guohui, Shen Meng, Zheng Yanzhao, Li Liuling, Wu Junfeng, Xu Xinjun, Qu Jun, Chen Tiansong, Li Xiukun, Jiang Hailin, Luo Xianghua, Lin Lin, Li Xingkang, Zhang Chongle, Yang Xiaojuan, Zhao Weizhou, Huo Xinlin, Lu Jing, Zhang Shi, Hu Jing, Liang Jingxuan, Feng Zhengmao, Li Yongquan, Song Dewen, Zhang Yang, Wang Ruiqun, Sun Dayong, Li Kai, Yang Kai, Shen Zhongwei, Ye Shuxin, Deng Xiaodong, Chang Yue, Wang Liang, Zhou Dan, Gao Weixun, Dai Jinliang, Chen Rui, Zhao Xiying: This document was first published in:2012 and this is the first revision:IntroductionThis document has been drawn up because special considerations are required for enclosures on high-voltage switchgear or associated gas-filled equipment: pieces: The purpose is to clarify the material, design, manufacturing and process, inspection, testing and quality assurance requirements of this kind of enclosure, and to help high-voltage switchgear or Relevant inflatable equipment manufacturers make relevant purchases, or can better design, manufacture, inspect, and detect high-voltage switchgear or related inflatable equipment: equipment: a) The enclosure is usually used as a container for electrical equipment, so its shape is mainly determined by electrical factors rather than mechanical factors decided: b) The enclosure is installed in a restricted accessible area and the equipment may only be operated by professionals or authorized personnel: c) Since thorough drying of the inert, non-corrosive gas-filled medium is the basis for good operation of electrical equipment and its regular inspection, Therefore, the wall thickness of these enclosures does not require internal corrosion allowance: d) Since the inflation density should be kept within a narrow range that ensures good insulation and/or arc-extinguishing properties, the enclosure is only subjected to small pressure waves move: As a result, the housing is less susceptible to fatigue from pressure cycles: e) Operating pressure is relatively low: Aluminum alloy housing for inflatable high-voltage switchgear1 ScopeThis document specifies the normal and special conditions of use, materials, design, manufacturing and workmanship, and defects in aluminum alloy enclosures of high-voltage switchgear: Repair, heat treatment of cast aluminum alloys, inspection, testing and quality assurance, pressure relief device requirements: This document is applicable to outdoor or indoor installations filled with compressed dry air, sulfur hexafluoride, nitrogen, etc: or a mixture of these gases: Design, production, inspection and testing of aluminum alloy casings for high-voltage switchgear: Note: The above gases are mainly used for insulation and/or arc extinguishing, and the design pressure is usually greater than 0:3MPa (relative pressure): The components contained in the aluminum alloy housing of inflatable high-voltage switchgear (including rigid gas insulated transmission lines) are not limited to the following element: ---breaker; ---Load switch; ---isolating switch; ---Grounding switch; ---Current Transformer; ---Voltage transformer; ---lightning arrester; ---Busbars and connectors: It also includes pressure-bearing components, such as triple boxes (three-way) of switchgear with live casings:2 Normative reference documentsThe contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document: GB/T 150 (all parts) Pressure vessels GB/T 150:3-2011 Pressure vessels Part 3: Design GB/T 228 (all parts) Tensile testing of metallic materials GB/T 232-2010 Bending test method for metallic materials GB/T 1173-2013 Cast aluminum alloy GB/T 3246:1-2012 Structural examination methods for deformed aluminum and aluminum alloy products Part 1: Microstructure examination methods GB/T 6519-2013 Ultrasonic inspection method for deformed aluminum and magnesium alloy products GB/T 9438-2013 Aluminum alloy castings GB/T 10858 Aluminum and aluminum alloy welding wire GB/T 11022-2020 Common technical requirements for high-voltage AC switchgear and control equipment standards GB/T 11346-2018 Defect classification for radiographic inspection of aluminum alloy castings GB/T 12467 (all parts) Quality requirements for welding of metallic materials GB/T 32563-2016 Non-destructive testing ultrasonic testing phased array ultrasonic testing method GB/T 34630:3-2017 Friction stir welding 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