GB/T 14598.27-2025 English PDFUS$1819.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 14598.27-2025: Measuring relays and protection equipment - Part 27: Product safety requirements Status: Valid GB/T 14598.27: Historical versions
Basic dataStandard ID: GB/T 14598.27-2025 (GB/T14598.27-2025)Description (Translated English): Measuring relays and protection equipment - Part 27: Product safety requirements Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K45 Classification of International Standard: 29.120.70 Word Count Estimation: 90,944 Date of Issue: 2025-05-30 Date of Implementation: 2025-05-30 Older Standard (superseded by this standard): GB/T 14598.27-2017 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 14598.27-2025: Measuring relays and protection equipment - Part 27: Product safety 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 29.120.70 CCSK45 National Standard of the People's Republic of China Replaces GB/T 14598.27-2017 Measuring relays and protective devices Part 27. Product safety requirements (IEC 60255-27.2023,MOD) Released on 2025-05-30 2025-05-30 Implementation State Administration for Market Regulation The National Standardization Administration issued Table of contentsPreface III Introduction VI 1 Scope 1 2 Normative references 1 3 Terms and definitions 3 4 Electric shock protection10 4.1 Protection against contact with hazardous live parts 10 4.2 Protection impedance 11 4.3 Accessible parts 11 4.4 Grounding and protective bonding requirements 14 4.5 Functional grounding circuit 15 4.6 Protective conductor connection 15 4.7 Leakage Current 15 4.8 Solid insulation 15 4.9 Clearance and creepage distances 16 4.10 Single Fault Condition 17 5 Mechanical aspects 20 5.1 Protection against mechanical hazards 20 5.2 Mechanical requirements 20 5.3 Mechanical safety of terminals 20 6 Flammability and fire prevention 20 6.1 General 20 6.2 Fire spread protection requirements 21 6.3 General hazards of overheating and fire 22 6.4 Minimization of fire risk 23 6.5 Connection and Fusing 24 6.6 Flammability of materials and components 24 6.7 Ignition sources 26 6.8 Conditions for using fireproof enclosures 26 6.9 Fire enclosures and flame barriers 27 6.10 Fire risk assessment under single fault conditions 29 6.11 Energy-limiting circuit 29 7 General and basic safety design requirements 30 7.1 Safe climate conditions 30 7.2 Electrical connections 30 7.3 Component 31 7.4 Connection with other devices 31 7.5 High-intensity light sources 31 7.6 Explosion 31 8 Marking, documentation and packaging 32 8.1 Sign 32 8.2 File 38 8.3 Packaging 40 9 Type test and routine test 40 9.1 General 40 9.2 Safety type test 41 9.3 Routine tests 41 9.4 Test conditions 42 9.5 Confirmation Procedure 42 9.6 Test 42 Appendix A (Normative) Insulation classification requirements and illustrations 52 Appendix B (Normative) Rated impulse voltage 59 Appendix C (Normative) Guidelines for determining clearances, creepage distances and withstand voltages 60 Appendix D (Informative) Component 70 Appendix E (Normative) External wiring terminals 74 Appendix F (Informative) Battery Protection Example 76 Appendix G (Informative) Risk Assessment 77 References 80ForewordThis 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 part 27 of GB/T 14598.GB/T 14598 has been published in the following parts. ---GB/T 14598.2 Measuring relays and protection devices Part 1.General requirements; ---GB/T 14598.3 Electrical relays Part 5.Insulation coordination requirements and tests for measuring relays and protection devices; ---GB/T 14598.8 Electrical relays Part 20.Protection systems; ---GB/T 14598.23 Electrical relays Part 21.Vibration, shock, impact and earthquake of measuring relays and protective devices Test Part 3.Earthquake Test; ---GB/T 14598.24 Measuring relays and protection devices Part 24.Transient data exchange in power systems (COMTRADE) Common Format; ---GB/T 14598.26 Measuring relays and protection devices Part 26.Electromagnetic compatibility requirements; ---GB/T 14598.27 Measuring relays and protection devices Part 27.Product safety requirements; ---GB/T 14598.118 Measuring relays and protection devices Part 118.Synchronous phasor measurement in power systems; ---GB/T 14598.121 Measuring relays and protection devices Part 121.Requirements for distance protection functions; ---GB/T 14598.127 Measuring relays and protection devices Part 127.Over/undervoltage protection function requirements; ---GB/T 14598.149 Measuring relays and protection devices Part 149.Functional requirements of electric heating relays; ---GB/T 14598.151 Measuring relays and protection devices Part 151.Over/under current protection function requirements; ---GB/T 14598.181 Measuring relays and protection devices Part 181.Requirements for frequency protection functions; ---GB/T 14598.300 General technical requirements for transformer protection devices; ---GB/T 14598.301 Technical requirements for continuous recording devices in power systems; ---GB/T 14598.302 Technical requirements for arc protection devices; ---GB/T 14598.303 General technical requirements for digital integrated motor protection devices; ---GB/T 14598.1871 Measuring relays and protection devices Part 187-1.Functional requirements for differential protection of motors, Generator and transformer ratio restrained differential protection and differential quick-break protection. This document replaces GB/T 14598.27-2017 "Measuring relays and protection devices Part 27.Product safety requirements" and Compared with GB/T 14598.27-2017, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) The following terms and definitions have been changed. "accessible conductive parts" (see 3.1, 3.18 of the.2017 edition), "accessible parts" (see 3.2, 3.1 of the.2017 edition), "adjacent circuits" (see 3.3, 3.2 of the.2017 edition), "fences" (see 3.5, 3.4), "Extra-low voltage" (see 3.16, 3.16 of the.2017 edition), "Functional grounding circuit" (see 3.18, 3.20 of the.2017 edition), "Hazardous live parts" (see 3.21, 3.23 of the.2017 edition), "Hazardous live voltage" (see 3.22, 3.24 of the.2017 edition), "High "Integrity components" (see 3.23, 3.27 of the.2017 edition), "Class I equipment" (see 3.33, 3.7 of the.2017 edition), "Class II equipment" (see 3.34, 3.8 of the.2017 edition), "pollution degree" (see 3.37, 3.39 of the.2017 edition), "primary circuit" (see 3.38, 2017 Edition), “Protective bonding resistor” (see 3.40, 3.46 of the.2017 Edition), “Protective conductor” (see 3.41, 3.47), “Protective earthing” (see 3.42, 3.48 of the.2017 edition), “Protective equipotential bonding circuit” (see 3.43, 3.36), “Protective extra-low voltage circuits” (see 3.44, 3.37 of the.2017 edition), “Protective shielding” (see 3.46,.2017 edition 3.50), “Protective isolation” (see 3.47, 3.51 of the.2017 edition), “Rated voltage” (see 3.50, 3.54 of the.2017 edition), “Reinforced "Insulation" (see 3.51, 3.55 of the.2017 edition), "Restricted access area" (see 3.52, 3.56 of the.2017 edition), "Key safety devices "Parts" (see 3.54, 3.58 of the.2017 edition), "Safety Extra Low Voltage Circuits" (see 3.55, 3.60 of the.2017 edition), "Single Fault Status” (see 3.57, 3.61 of the.2017 edition); b) Added the following terms and definitions. "basic protection" (see 3.7), "cabinet" (see 3.9), "low power transformer" (see 3.25), "low "Power current transformer" (see 3.26), "Low power voltage transformer" (see 3.27), "Maintenance use" (see 3.28), "Normal use" (see 3.30), "solid insulation" (see 3.58) and "wired network port" (see 3.63); c) The following terms and definitions have been deleted. “communication circuits/networks” (see 3.12 of the.2017 edition), “HB40 grade materials” (see 3.25 of the.2017 edition), “HB75 grade materials” (see 3.26 of the.2017 edition), “maintenance operators” (see 3.30 of the.2017 edition), “micro "Observational Environment" (see 3.31 of the.2017 edition), "Normal Conditions" (see 3.33 of the.2017 edition), "Pollution Level 1" (see 3.40 of the.2017 edition), “Pollution Level 2” (see 3.41 of the.2017 edition), “Pollution Level 3” (see 3.42 of the.2017 edition), “Pollution Level 4” (see 3.43 of the.2017 edition); d) Added "Equipment enclosure requirements for electric shock protection" (see 4.1.3); e) Changed the documentation requirements (see 8.2.1, 9.2.1 of the.2017 edition); f) Changed the scope of the safety assessment basis clause (see 9.1, 10.1 of the.2017 edition); g) Added environmental tests (see 9.6.1.1) and dielectric voltage tests and insulation resistance tests for mechanical requirements (see 9.6.2.1); h) Added short-time limit dynamic stability overload (see 9.6.5.3.2); i) increased resistance to mechanical stress (see 9.6.7); j) Added low-power voltage and current transformer ports (see Appendix A.2); k) The guidance for determining electrical clearance, creepage distance and withstand voltage has been changed (see Appendix C, Appendix C of the.2017 edition); l) Added varistors and intentional radio transmitters (see Appendix D.9 and Appendix D.10); m) Added risk assessment (see Appendix G); n) Sampling test has been deleted (see 10.3 of the.2017 edition). This document is modified to adopt IEC 60255-27.2023 "Measuring relays and protection devices Part 27.Product safety requirements". The technical differences between this document and IEC 60255-27.2023 and their reasons are as follows. --- Replaced IEC 60529.1989, IEC 60529.1989/AMD1.1999 and GB/T 4208-2017 with the normative reference IEC 60529.1989/AMD2.2013, the consistency between the several documents is equivalent, so as to unify the reference document version. Standard application. --- The insulation resistance of 9.6.4.5.1 "when DC 500V is applied shall not be less than 1MΩ. After the wet heat type test and recovery for 1h~ After 2h, the insulation resistance when DC 500V is applied under reference environmental conditions shall not be less than 1MΩ. The insulation resistance at 500V should not be less than 100MΩ. After the damp heat type test and recovery for 1h~2h, in the reference environment The insulation resistance should not be less than 10MΩ when DC 500V is applied under the condition. The insulation resistance is increased from 1MΩ to 100MΩ, which significantly improves the insulation performance index of the product and reduces the risk of leakage or breakdown. The insulation resistance requirement after the damp heat test is increased from 1MΩ to 10MΩ to ensure that the equipment can still maintain a relatively high insulation resistance in a humid environment. High insulation performance improves the reliability of equipment under harsh conditions. The following editorial changes were made to this document. --- In order to correct the typo in the original IEC text, the relevant content of 3.15 was changed, and the "(see Chapter 7)" in the note was changed to "(see Chapter 6)"; --- In order to correct the typos in the original IEC text, the relevant contents of 9.6.1.1, 9.6.2.1, 9.6.2.2, 9.6.2.3, and 9.6.2.4 were changed to "Pressure" is changed to "Insulation resistance"; --- In order to correct the typo in the original IEC text, the relevant content of A.3 was changed, and "applicable to Table A.1" was changed to "applicable to Table A.2"; --- In order to correct the typo in the original IEC text, the relevant content of D.9b) was changed, and "Table 1 Group 1" was changed to "Table 4 Group 1", "2.3.6" Change to “5.3.6” and “Appendix A” to “Appendix X”. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Electrical Equipment Industry Association. This document is under the jurisdiction of the National Technical Committee for Standardization of Measuring Relays and Protection Equipment (SAC/TC154). This document was drafted by. Xuchang Cape Testing Research Institute Co., Ltd., Xuchang Cape Electric Research Institute Co., Ltd., State Grid Corporation of China State Electric Power Dispatching and Control Center of China Southern Power Grid Co., Ltd., Yunnan Power Grid Co., Ltd., State Grid Jiangsu Province Nanjing Power Supply Branch of State Grid Corporation of China, Quzhou Power Supply Company of State Grid Zhejiang Electric Power Co., Ltd., Electric Power Science and Technology Co., Ltd. of State Grid Gansu Electric Power Co., Ltd. Research Institute, Yunnan Electric Power Testing and Research Institute (Group) Co., Ltd., State Grid Henan Electric Power Company Electric Power Science Research Institute, Changyuan Shenrui Jibao Automation Co., Ltd., State Grid Nanjing Automation Co., Ltd., Beijing Sifang Relay Protection Automation Co., Ltd., Nanjing NARI Relay Protection Electric Co., Ltd., Dongfang Electronics Co., Ltd., NARI Technology Co., Ltd., China Three Gorges University, China Electric Power Research Institute Co., Ltd. Company, State Grid Electric Power Research Institute Co., Ltd., Shanghai Siyuan Hongrui Automation Co., Ltd., ABB (China) Co., Ltd., Jicheng Electronics Co., Ltd. Co., Ltd., Beijing Qingneng Relay Control Technology Group Co., Ltd., Schneider Electric (China) Co., Ltd. Shanghai Branch, Shanghai Huajian Electric Power Equipment Co., Ltd., State Grid Hubei Electric Power Co., Ltd. Jingmen Power Supply Company. The main drafters of this document are. Li Jia, Hu Xiaojing, Ma Chao, Xu Peng, Shi Hengchu, Chen Hao, Jiang Guanqian, Qi Biyun, Zheng Wei, Ding Xinzhi, Han Wei, Liu Hongjun, Yue Feng, Xu Gang, Wang Feng, Zhao Hongqiang, Yin Dapeng, Li Zhenxing, Liu Longhao, Zhou Yongrong, Sha Jing, Li Yan, Sun Tiande, Yang Kebiao, Li Ming, Ge Kuan, Gu Bin, and Pi Zhiyong. The previous releases of this document and the documents it replaces are. --- First issued as GB 16836-1997 in.1997 and first revised in.2003; ---Second revision in.2008, third revision in.2017; ---This is the fourth revision.IntroductionThe IEC 60255 series of standards specifies the technical requirements and power system solutions for measuring relays and protection devices, as well as related IEC 60255-1~IEC 60255-99 specifies the basic general requirements for relays and protection devices. Requirements mainly include basic functions, mechanical properties, electromagnetic compatibility performance, product safety requirements, and general format for transient data exchange. IEC 60255-100~IEC 60255-199 specifies frequency protection, overcurrent/undercurrent protection, overvoltage/undervoltage protection, and distance protection. Functional performance requirements and test methods of major protection modules such as IEC 60255-200~IEC 60255-299 are presented in the form of technical reports. Special research is conducted to define the technical requirements for other protection equipment and related control, monitoring and process interface equipment. The purpose of formulating GB/T 14598 is to stipulate unified principles that are consistent with the above characteristics. These principles are applicable to power generation, transmission and distribution systems. Measuring relays and protection devices used in systems. GB/T 14598 is intended to consist of 18 parts. --- Part 2.General requirements for measuring relays and protection devices. The purpose is to specify measuring relays and protection devices and the General rules and requirements for power system protection schemes consisting of these devices such as control, monitoring and process interface equipment. --- Part 3.Insulation coordination requirements and tests for measuring relays and protection devices. The purpose is to specify the insulation coordination requirements for measuring relays and protection devices. General requirements for insulation coordination of devices, including how to select electrical clearances and creepage distances, voltage tests, insulation resistance measurements, etc. --- Part 8.Protection system. The purpose is to specify the performance requirements of the entire protection system and its components, applicable to all types of protection Protective devices and devices connected to the protective devices that have an impact on them. --- Part 23.Earthquake test. The purpose is to specify the test methods and test conditions for earthquake tests on measuring relays and protection devices Test severity levels, test procedures and acceptance criteria. --- Part 24.Common format for power system transient data exchange (COMTRADE). The purpose is to define a common data Interchange format, used to store various types of fault, test and simulation data files and exchange media. Define data exchange general format, which is conducive to improving the analysis, testing, evaluation and simulation of power systems and their protection and control measures under fault disturbance conditions. Automated level. --- Part 26.Electromagnetic compatibility requirements. The purpose is to specify the electromagnetic compatibility requirements for measuring relays and protection devices, including electromagnetic Emissions and Immunity. --- Part 27.Product safety requirements. The purpose is to specify the basic safety requirements for measuring relays and protection devices so that The risk of fire, electric shock or injury to the user is minimized. This standard also applies to devices used with measuring relays and protective devices Test and auxiliary devices used. --- Part 118.Power system synchronized phasor measurement. The purpose is to specify the performance classification of synchronized phasor measurement and the performance of each performance Evaluation methods and performance indicators for steady-state performance and dynamic performance of categories. --- Part 121.Distance protection functional requirements. The purpose is to specify the functions and performance evaluation of distance protection on power system lines. minimum requirements for pricing, and how performance test results should be recorded and published. --- Part 127.Over/undervoltage protection function requirements. The purpose is to specify the minimum requirements for over/undervoltage relays, including protection Specifications of functions, measurement characteristics and delay characteristics. --- Part 149.Functional requirements for electric thermal relays. The purpose is to specify the minimum requirements for electric thermal relays, including protection functions, test Specifications for quantitative characteristics and test methods. --- Part 151.Over/under current protection function requirements. The purpose is to specify the minimum requirements for over/under current relays, including protection Specifications of functions, measurement characteristics and delay characteristics. --- Part 181.Frequency protection function requirements. The purpose is to specify the minimum requirements for frequency protection functions and performance evaluation, and to record Methods for recording and publishing performance test results. --- Part 300.General technical requirements for transformer protection devices. The purpose is to specify the technical requirements, test Methods, inspection rules, marking and labeling, packaging, transportation and storage requirements, etc. --- Part 301.Technical requirements for continuous recording devices in power systems. The purpose is to specify the technical requirements for continuous recording devices in power systems. Requirements, test methods, inspection rules, marking labels, packaging, transportation and storage requirements, etc. --- Part 302.Technical requirements for arc protection devices. The purpose is to specify the technical requirements, test methods, inspection and Inspection rules, marking and labeling, packaging, transportation and storage requirements. --- Part 303.General technical requirements for digital motor integrated protection devices. The purpose is to specify the general technical requirements for digital motor integrated protection devices. General technical requirements, test ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 14598.27-2025_English be delivered?Answer: Upon your order, we will start to translate GB/T 14598.27-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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