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Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 30556.5-2025: Electromagnetic compatibility - Installation and mitigation guidelines - Part 5: Specification of protective devices for HEMP conducted disturbance Status: Valid
Basic dataStandard ID: GB/T 30556.5-2025 (GB/T30556.5-2025)Description (Translated English): Electromagnetic compatibility - Installation and mitigation guidelines - Part 5: Specification of protective devices for HEMP conducted disturbance Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: L06 Classification of International Standard: 33.100.01 Word Count Estimation: 28,251 Date of Issue: 2025-05-30 Date of Implementation: 2025-12-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 30556.5-2025: Electromagnetic compatibility - Installation and mitigation guidelines - Part 5: Specification of protective devices for HEMP conducted disturbance---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 33.100.01 CCSL06 National Standard of the People's Republic of China EMC Installation and Mitigation Guidelines Part 5.Specification for HEMP conducted disturbance protection devices Released on 2025-05-30 2025-12-01 Implementation State Administration for Market Regulation The National Standardization Administration issued Table of contentsPreface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Specifications for conducted disturbance protection devices 4 4.1 Overview 4 4.1.1 Device Category 4 4.1.2 Basic principles of protection device description 5 4.2 Gas discharge tube 5 4.2.1 Basic Specifications 5 4.2.2 Additional basic specifications 6 4.2.3 HEMP related standards 6 4.3 Metal Oxide Varistor (MOV) 6 4.3.1 Basic Specifications 6 4.3.2 Additional basic specifications 6 4.3.3 HEMP related standards 6 4.4 Vent type arrester 7 4.5 Nonlinear resistor type arrester 7 4.5.1 Basic Specifications 7 4.5.2 Additional basic specifications 7 4.5.3 HEMP related specifications 7 4.6 Avalanche transient voltage suppressor (protection diode) 7 4.6.1 Overview 7 4.6.2 Basic Specifications 8 4.6.3 HEMP related specifications 8 4.7 Filter 8 4.7.1 Overview 8 4.7.2 Basic Specifications 8 4.7.3 Additional basic specifications for non-power line filters 8 4.7.4 Additional basic specifications for power line filters 9 4.7.5 HEMP related specifications 9 4.8 Protection circuit 10 4.8.1 Overview 10 4.8.2 Specification 10 4.9 Safety lightning arrester 11 4.9.1 Overview 11 4.9.2 Safety-related regulations 11 4.9.3 Surge-related regulations 12 4.10 Coaxial RF circuit protector 12 4.10.1 Overview 12 4.10.2 Basic Specifications 12 4.10.3 HEMP-related specifications for coaxial fixtures 13 4.10.4 HEMP-related specifications for stubs and resonators 13 Appendix A (Informative) Overview of general protection circuits and their applications in surge protection 14 A.1 Scope 14 A.2 Definition 14 A.3 Overview 14 A.4 Protection circuit types and their typical applications 14 Appendix B (Informative) Inductance measurement method of dual-lead structure voltage limiting device 17 B.1 Applicability 17 B.2 Method 17 B.3 Test fixture 18 Appendix C (informative) Overview of safety arresters and related safety basic principles 19 C.1 Definition 19 C.2 Overview 19 C.3 Safety-related regulations 19 Appendix D (Informative) Measurement method of power filter input impedance 21 D.1 Overview 21 D.2 Measurement methods 21 D.2.1 Layout 21 D.2.2 Signal generator 21 D.2.3 Voltmeter and ammeter 21 D.2.4 Test device 21 D.2.5 Measurement procedure 21 Appendix E (Informative) References 22 E.1 Gas discharge tube 22 E.2 Metal Oxide Varistor (MOV) 22 E.3 Non-linear resistor type arrester 22 E.4 Avalanche Junction Transient Voltage Suppressor (Protection Diode) 22 E.5 Filter 22ForewordThis 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 5 of GB/T (Z) 30556 "Electromagnetic Compatibility Installation and Mitigation Guidelines". GB/T (Z) 30556 has been published The following parts. --- General requirements (GB /Z 30556.1); --- Grounding and wiring (GB /Z 30556.2); --- Protection concept against high altitude nuclear electromagnetic pulse (HEMP) (GB /Z 30556.3); --- Part 5.Specification for HEMP conducted disturbance protection devices (GB/T 30556.5); ---Electromagnetic disturbance protection level of enclosure (EM code) (GB/T 30556.7); --- Part 8.HEMP protection methods for distributed infrastructure (GB /Z 30556.8); --- Part 9.Coefficient level sensitivity evaluation of HEMP and HPEM (GB /Z 30556.9). This document is equivalent to IEC 61000-5-5.1996 "Electromagnetic compatibility Part 5.Installation and mitigation guidelines Part 5. HEMP conducted disturbance protection device specification basis EMC publication. The following minimal editorial changes were made to this document. --- In order to adapt to my country's standard system, the name of the standard was changed to "Electromagnetic Compatibility Installation and Mitigation Guidelines Part 5.HEMP "Specifications for Conducted Disturbance Protection Devices". 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 is proposed and coordinated by the National Electromagnetic Compatibility Standardization Technical Committee (SAC/TC246). This document was drafted by. China Electronics Standardization Institute, China Automotive Technology and Research Center Co., Ltd., Chinese Academy of Sciences Space Applied Engineering and Technology Center, Beijing Radio Measurement and Testing Institute, State Grid Corporation of China DC Construction Branch, China Electric Power Science and Technology Research Institute Co., Ltd., China National Accreditation Service for Conformity Assessment, and State Grid Corporation of China. The main drafters of this document are. Ye Chang, Han Yufeng, Zhang Ge, Liu Haiming, Yang Zhichao, Liu Hao, Zhang Jiangong, Chen Di, Chen Wei, Xie Huichun, Li Ni, Ni Yuan, Wang Yanzhao, Zhou Bing, Liu Zhenhuan, Hu Jingzhu.IntroductionElectromagnetic compatibility refers to the ability of electrical and electronic equipment or systems to work properly in their electromagnetic environment and not cause any adverse effects on anything in the environment. The electromagnetic compatibility problem is one of the important factors affecting the environment and product quality. Its standardization work has attracted In this regard, the IEC 61000 series of standards developed by the International Electrotechnical Commission (IEC) is a key standard for the manufacturing and information industries. General standards in the fields of industry, electrical engineering and energy, transportation, social services and health, consumer product quality and safety, etc. There are six categories. description, environment, limit, test and measurement technology, installation and mitigation guidelines, and general standards. my country has carried out research on this series of standards. Domestic transformation work has been carried out and a corresponding national standard system has been established. In this standard system, GB/T (Z) 30556 "Electromagnetic Compatibility Installation and Mitigation Guidelines" is about the installation and mitigation of electromagnetic compatibility. The basic standard on measures aims to describe the electromagnetic environment protection methods, devices, mitigation methods, etc., and is planned to consist of 10 parts. --- General requirements (GB /Z 30556.1). The purpose is to provide general requirements and guidelines for mitigation methods to ensure that and electromagnetic compatibility of electrical and electronic equipment or systems used in industrial environments. --- Grounding and wiring (GB /Z 30556.2). The purpose is to provide grounding and wiring guidelines for electrical and electronic equipment and facilities. Ensure the electromagnetic compatibility of electrical and electronic equipment or systems. --- Protection concept of high altitude nuclear electromagnetic pulse (HEMP) (GB /Z 30556.3). The purpose is to provide relevant information on the protection of civil facilities against Adequate protection design for HEMP, assessment of the strength of the HEMP to be sustained by existing protection, requirements for HEMP protection and lightning protection Basic information on the differences in requirements. --- Part 4.HEMP immunity HEMP disturbance protection device technical specification (expected to be Part 4). The purpose is to To specify the protective devices used to protect civilian systems from HEMP effects, in order to unify the technologies that have been or will be released by all parties specification. --- Part 5.Specification for HEMP conducted disturbance protection devices (GB/T 30556.5). The purpose is to describe the The corresponding parameter index specifications of the disturbance protection device are guaranteed by the manufacturer of the protection device, the manufacturer of the electronic equipment, the official agency conformity with existing or future specifications published by the organization and other end users. --- Part 6.Mitigation of external electromagnetic influences (expected to be Part 6). The purpose is to describe the mitigation of external electromagnetic influences such as Guidelines for the protection of electrical and electronic equipment or systems from electromagnetic influences such as lightning, radio frequency transmitters, power lines and telecommunications transients. Electromagnetic compatibility between. ---Electromagnetic disturbance protection level of enclosure (EM code) (GB/T 30556.7). The purpose is to provide a repeatable test method to Evaluate the shielding performance of empty structural enclosures such as chassis and racks, and specify codes to allow manufacturers to use known electromagnetic field attenuation to Reduce capacity to select the shell. --- Part 8.HEMP protection methods for distributed infrastructure (GB /Z 30556.8). The purpose is to provide Provide guidance on protecting infrastructure (power, communications, transportation, pipeline networks, etc.) from the threat of HEMP. --- Part 9.System-level sensitivity assessment of HEMP and HPEM (GB /Z 30556.9). The purpose is to provide Effective methods for evaluating the system-level sensitivity of electronic systems to HEMP and HPEM environments, and discuss the advantages and disadvantages of these methods Points and application examples. --- Part 10.Guidelines for the protection of HEMP and IEMI facilities (expected to be Part 10). The purpose is to protect commercial facilities Free from HEMP and IEMI providing guidance. EMC Installation and Mitigation Guidelines Part 5.Specification for HEMP conducted disturbance protection devices1 ScopeThis document specifies how to specify conducted disturbance protection devices for HEMP protection. A list of existing or future specifications published by device manufacturers, electronic equipment manufacturers, official agencies and other end users The performance requirements of protective devices are given in subsequent national standards. This document covers the current protection against HEMP transients on signal lines and low voltage power lines (nominal voltage AC 1kV or less). Appropriate protective devices. The general information on protective devices also applies to high-voltage lines. However, in these cases, the information on existing arresters (especially ungapped metal ones) is Additional requirements for the degree of protection of metal oxide arresters are under consideration. In general, the HEMP related parameters of interest are those related to the electromagnetic field, voltage (u) and current as a function of time. (i) is related to the rapid change of the HEMP phenomenon. For the basic specification, reference may be made to other relevant standards that are not limited to the HEMP phenomenon (see Appendix E). Where these standards do not adequately take into account the requirements of modern electronic equipment, they may be modified or expanded on the basis of non-HEMP related standards. Added specifications.2 Normative referencesThe contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. Note. GB/T 16927.1-1997 High Voltage Test Technology Part 1.General Definitions and Test Requirements (IEC 60060-1.1989, IDT) IEC 60099-1 Surge arresters - Part 1.Non-linear gapped valve arresters for AC systems Note. GB/T 15287-1994 Radio Frequency Interference Suppression Filters Part 1.General Specification (IEC 60939-1.1988, IDT) IEC 60939-2 Radio frequency interference suppression integrated filters Part 2.Selection of test methods and general requirements for sectional specifications (Com- Note. GB/T 15288-1994 Radio Frequency Interference Suppression Filters Part 2.Selection of test methods and general requirements for sub-specifications (IEC 939-2. 1988,IDT) IEC 61000-4-24 Electromagnetic compatibility (EMC) Part 4-24.Testing and measurement techniques Protection against HEMP conducted disturbances Note. GB/T 17626.24-2012 Electromagnetic compatibility test and measurement technology Test method for HEMP conducted disturbance protection device (IEC 61000-4-24. 1997,IDT) ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 30556.5-2025_English be delivered?Answer: Upon your order, we will start to translate GB/T 30556.5-2025_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 30556.5-2025_English with my colleagues?Answer: Yes. 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