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Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 9089.2-2023: Electrical installations for outdoor sites under heavy conditions - Part 2: General protection requirements Status: Valid GB/T 9089.2: Historical versions
Basic dataStandard ID: GB/T 9089.2-2023 (GB/T9089.2-2023)Description (Translated English): Electrical installations for outdoor sites under heavy conditions - Part 2: General protection requirements Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K09 Classification of International Standard: 29.020 Word Count Estimation: 37,348 Date of Issue: 2023-05-23 Date of Implementation: 2023-12-01 Older Standard (superseded by this standard): GB/T 9089.2-2008 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 9089.2-2023: Electrical installations for outdoor sites under heavy conditions - Part 2: General protection 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. ICS 29:020 CCSK09 National Standards of People's Republic of China Replace GB/T 9089:2-2008 Electrical installations in harsh outdoor conditions Part 2: General protection requirements Released on 2023-05-23 2023-12-01 Implementation State Administration for Market Regulation Released by the National Standardization Management Committee table of contentsPreface III Introduction V 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Basic protection (protection against electric shock under normal working conditions) 1 5 Failsafe (protection against electric shock in case of failure) 5 6 Overcurrent and fault current protection 20 7 Selection of protective appliances and protection systems 24 Appendix A (Normative) Determination of factor k 27 Appendix B (informative) Several types of protective devices and their instructions for use 29 Reference 31forewordThis document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting: This document is the second part of GB/T 9089 "Electrical installations under severe outdoor conditions": GB/T 9089 has issued the following part: --- Part 1: Terminology; --- Part 2: General protection requirements; --- Part 3: General requirements for equipment and accessories; --- Part 4: Device requirements; --- Part 5: Operational requirements: This document replaces GB/T 9089:2-2008 "Electrical Installations Under Severe Conditions Part 2: General Protection Requirements", and Compared with GB/T 9089:2-2008, except for structural adjustment and editorial changes, the main technical changes are as follows: a) The scope has been changed (see Chapter 1, Chapter 1 of the:2008 edition); b) Deleted Table 1 (see 4:2:1, 4:2:1 of the:2008 edition); c) The insulation degree of protection by insulation is changed (see 4:3:2, 4:3:1 of the:2008 edition); d) Changed some protection requirements beyond the reach of the arm (see 4:4, 4:4 of the:2008 edition); e) Added the requirement to set up barriers to achieve partial protection (see 4:5, 4:5 of the:2008 edition); f) Deleted the safety distance for the operation and maintenance access of indoor facilities (see 4:6:1 of the:2008 edition); g) Changed the protective conductor protection measures (see 5:1:5, 5:1:4 of the:2008 edition); h) Changed the identification of conductors (see 5:1:8, 5:1:7 of the:2008 edition); i) The connection of the exposed conductive part of the TN system has been changed (see 5:3:2, 5:3:1 of the:2008 edition); j) Changed the conditions to be met after the TT system failure occurs (see 5:4:4, 5:4:3 of the:2008 edition); k) The protection device of the IT system has been changed (see 5:5:6, 5:5:5 of the:2008 edition); l) The type, corrosion condition, water requirements and connection requirements of the grounding electrode have been changed (see 5:7:2, 5:7:2:1, 5:7:2:5, 5:7:2:5 of the:2008 edition 5:7:2:9 and 5:7:2:10); m) The connecting conductor of the main terminal is changed (see 5:7:4, 5:7:4:1 of the:2008 edition); n) The type of protective conductor has been changed (see 5:7:5:1, 5:7:5:1 of the:2008 edition); o) Table 9 has been changed (see Table 7, Table 9 of the:2008 edition); p) increase the minimum cross-sectional area of aluminum conductors (see 5:7:5:2:3); q) Changed the requirements for the electrical continuity of the protective conductor (see 5:7:5:3, 5:7:5:3 of the:2008 edition); r) The electrical equipment for overload automatic cut-off protection has been changed (see 6:3:1:2, 6:3:1:2 of the:2008 edition); s) Added the requirement that one protective device protect several parallel conductors in the protective device (see 6:3:2:2, 6:3:2:2 of the:2008 edition); t) Changed the installation requirements for short-circuit protective devices (see 6:4:4, 6:4:4 of the:2008 edition); u) Figure 8 has been deleted (see Figure 8 of the:2008 edition): Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed by China Electrical Equipment Industry Association: This document is under the jurisdiction of the National Low-voltage Switchgear and Control Equipment Standardization Technical Committee (SAC/TC266): This document is drafted by: Tianjin Electric Science Research Institute Co:, Ltd:, China Quality Inspection and Testing Research Institute Co:, Ltd:, Zhejiang Fang Yuan Electric Equipment Testing Co:, Ltd:, Tianjin Tianchuan Electric Control Equipment Testing Co:, Ltd:, Fujian Quanyuan Electric Equipment Co:, Ltd:, Shanghai Nankongtong Xun Electric Equipment Co:, Ltd:, Shanghai Youbang Electric (Group) Co:, Ltd:, Shanghai Huajian Switch Co:, Ltd:, State Grid Shanghai Energy Interconnection Network Research Institute Co:, Ltd:, Weiteng Electric Group Co:, Ltd:, Gaoyuan (Shandong) Electromechanical Equipment Co:, Ltd:, Shanghai Outong Electric Co:, Ltd: Division, Shandong Houyu Industrial Co:, Ltd:, Hangzhou Xinmei Complete Electrical Appliance Manufacturing Co:, Ltd:, Shenzhen Guanghui Electric Industrial Co:, Ltd:, State Grid Hunan Provincial Electric Power Co:, Ltd: Power Supply Service Center (Metering Center), Zhuhai Yingyuan Electric Co:, Ltd:, Zhenjiang Galle Smart Power Technology Co:, Ltd: Division, Shandong Shengli Tonghai Group Dongying Tianlan Energy Saving Technology Co:, Ltd:, Hangzhou Power Equipment Manufacturing Co:, Ltd: Yuhang Qunli Complete Electrical Manufacturing Co:, Ltd: Branches, Zhejiang Neptune Technology Co:, Ltd:, Kechang Electric Co:, Ltd:, China Construction Eighth Bureau First Construction Co:, Ltd:, Zhejiang Areva Distribution Electric Automation Co:, Ltd:, Yantai State Grid Zhongdian Electric Co:, Ltd: The main drafters of this document: Zhang Lei, Wu Hua, Huang Fang, Lu Peihe, Yang Hongzhu, Wu Jian, Gao Guangchun, Wang Guoliang, Chen Jianchun, Han Shigen, Wang Shubin, Li Jie, Xiang Zhangfeng, Hu Chenguang, Shen Dilong, He Wei, Xiong Dezhi, Zeng Xunhui, Chen Siyuan, Han Guoqiang, Guo Qiang, Jia Limin, Wei Zheng, Jiang Xiutao, Yu Shengcai, Wang Guozhi: The release status of previous versions of this document and the documents it replaces are as follows: ---First published as GB/T 9089:2-1988 in 1988, first revised in:2008; --- This is the second revision:IntroductionGB/T 9089 "Electrical Facilities under Harsh Outdoor Conditions" is to determine the It is formulated according to the requirements for the operation and installation of electrical equipment and systems in places and similar places, and generally includes the following electrical equipment and systems: a) mining/stacking and primary processing machinery; b) secondary processing machinery; c) delivery system; d) drainage and water supply systems; e) mobile railway systems; f) fixed railway system (only refers to operation); g) electric trucks; h) power generation and distribution equipment; i) control, monitoring, signaling, communication systems; j) Auxiliary equipment: GB/T 9089 aims to give guidelines for the installation and operation of electrical equipment and systems under harsh outdoor conditions to ensure that people, animals and The safety of equipment and guarantee the normal operation of equipment: GB/T 9089 is proposed to consist of five parts: --- Part 1: Terminology: The purpose is to give the terms and definitions used in GB/T 9089 Electrical facilities under outdoor harsh conditions: --- Part 2: General protection requirements: The purpose is to give the electrical facilities under severe outdoor conditions under normal operation and fault conditions, Protection to ensure personal safety from electric shock and selection requirements for protective devices and systems: --- Part 3: General requirements for equipment and accessories: The purpose is to provide electrical components, rotating electrical machines, and transformers under harsh outdoor conditions: General equipment for transformers, static rheometers, switching appliances, cables and related components, brake circuits, safety circuits, fire protection systems, etc: Require: --- Part 4: Device requirements: The purpose is to give requirements for mining/stacking and primary processing machinery and conveying systems: --- Part 5: Operational requirements: The purpose is to give the normal operating procedures to be carried out to ensure personal safety: Electrical installations in harsh outdoor conditions Part 2: General protection requirements1 ScopeThis document specifies the electrical equipment and systems for outdoor harsh conditions, in normal operation and fault conditions, to ensure personal safety from contact Electrical direct contact protection and indirect contact protection (AC), as well as the selection of protective devices and systems: This document is suitable for use in severe outdoor conditions (including open-pit mines, quarries, stockyards and similar places), with a rated voltage of 1000V and All electrical installations below and 1000V to 252kV: Note: The working conditions of electrical facilities under harsh outdoor conditions are relatively special: They work in open places and undertake heavy-duty transportation and stacking tasks: At this The electrical facilities used in this occasion have the following characteristics: ---The location of equipment and systems should be changed frequently; ---The working area is large and continuously extended; ---The impact of special environment:2 Normative referencesThe contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: GB/T 9089:1 Electrical installations under severe outdoor conditions Part 1: Terminology GB 14050 System grounding type and safety technical requirements GB/T 16895:21 Electrical installations of buildings - Part 4-41: Safety protection against electric shock GB/T 26218:2 Selection and dimensioning of high voltage insulators for use under polluted conditions Part 2: Porcelain and glass for AC systems glass insulator3 Terms and DefinitionsThe terms and definitions defined in GB/T 9089:1 apply to this document: 4 Basic protection (protection against electric shock under normal working conditions) 4:1 General requirements Basic protection mainly refers to the protection against direct contact of all facilities with a voltage of 1000V and below and 1000V to 252kV Require: The basic protection shall meet the requirements of one of 4:2~4:5 and 4:6: When a safety extra-low voltage below 25V is used, it is considered that the basic protection can be guaranteed (see GB/T 16895:21): When the neutral conductor and protective conductor are installed in accordance with the requirements of 5:1:2, 5:3:6, 5:4:2 and 5:5:3, it is considered that the basic protection can be guaranteed: ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 9089.2-2023_English be delivered?Answer: Upon your order, we will start to translate GB/T 9089.2-2023_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 9089.2-2023?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 9089.2-2023 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. |
