77C - High power transient phenomena
“Standardization in the field of electromagnetic compatibility to protect equipment, systems and installations from intense but infrequent high power transient phenomena including: the electromagnetic fields produced by nuclear detonations at high altitude (High Altitude Electromagnetic Pulse (HEMP)); sources of Intentional Electromagnetic Interference (EMI); and Geomagnetically Induced Currents (GIC) from solar activity. Lightning and other transient phenomena are excluded from the scope of SC 77C.”
Phénomènes transitoires de forte intensité
« Normalisation dans le domaine de la compatibilité électromagnétique pour protéger les appareils, systèmes et installations contre les effets peu fréquents des phénomènes transitoires de forte intensité y compris : les champs électromagnétiques produits par des explosions nucléaires à haute altitude (Impulsion Électromagnétique à haute altitude (HEMP)), les sources d’Interférences Électromagnétiques (EMI) intentionnelles, les Courants Induits Géomagnétiquement (GIC) dus à l’activité solaire. La foudre ainsi que les autres phénomènes transitoires sont exclus du domaine d’application du SC 77C. ».
General Information
IEC 61000-4-36:2020 is available as IEC 61000-4-36:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61000-4-36:2020 provides methods to determine test levels for the assessment of the immunity of equipment and systems to intentional electromagnetic interference (IEMI) sources. It introduces the general IEMI problem, IEMI source parameters, derivation of test limits and summarises prac...view more
- Standard108 pagesEnglish language
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- Standard6 pagesEnglish and French language
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IEC TS 61000-5-10:2017(E) provides guidelines to protect commercial facilities from the high-power electromagnetic disturbances of high-altitude electromagnetic pulse (HEMP) and intentional electromagnetic interference (IEMI).
This document is applicable to both existing facilities and new buildings when the customer has decided that protection of critical electronics from HEMP and IEMI is important to the function of the facility.
IEC TS 61000-5-10:2017 has the status of a basic EMC publicati...view more
- Technical specification54 pagesEnglish language
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IEC 61000-4-23:2016(E) provides a protective devices test method for HEMP and other radiated disturbances. It is primarily intended for HEMP testing but can be applied to other externally generated radiated disturbances where appropriate. It provides a brief description of the most important concepts for testing of shielding elements. For each test, the following basic information is provided:
- theoretical foundation of the test (the test concepts);
- test set-up including outside-to-in and i...view more
- Standard104 pagesEnglish language
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IEC 61000-4-24:2015 deals with methods for testing protective devices for HEMP conducted disturbance. It includes two-terminal elements, such as gas discharge tubes, varistors, and two-port SPDs, such as HEMP combination filters. It covers testing of voltage breakdown and voltage-limiting characteristics but also methods to measure the residual voltage and/or the residual current, peak rate of rise and root action for the case of very fast changes of voltage and current as a function of time. It...view more
- Standard83 pagesEnglish and French language
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IEC 61000-4-25:2001+A1:2012 describe immunity test levels and related test methods for electrical and electronic equipment and systems exposed to high-altitude electromagnetic pulse (HEMP) environments. Specifications for test equipment and instrumentation test set-up, test procedures, pass/fail criteria, and test documentation requirements are also defined by this standard. These tests are intended to demonstrate the immunity of electrical and electronic equipment when subjected to HEMP radiate...view more
- Standard96 pagesEnglish and French language
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- Standard12 pagesEnglish and French language
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IEC/TS 61000-5-8:2009(E) provides guidance on how to protect the distributed infrastructure (power, telecommunications, transportation and pipeline networks, etc.) from the threat of a high altitude electromagnetic pulse (HEMP). In order to accomplish this goal, it is necessary to describe the special aspects of the HEMP threat to electrical/electronic systems that are connected and distributed in nature. In particular a nuclear burst at a typical altitude of 100 km will illuminate the Earth to ...view more
- Technical specification27 pagesEnglish language
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IEC/TR 61000-4-35:2009(E) provides information about extant system-level High-Power Electromagnetic (HPEM) simulators and their applicability as test facilities and validation tools for immunity test requirements in accordance with the IEC 61000 series of standards. HPEM simulators with the capability of conducted susceptibility or immunity testing will be included in a further stage of the project. In the sense of this report the group of HPEM simulators consists of narrow band microwave test f...view more
- Technical report81 pagesEnglish language
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IEC/TS 61000-5-9:2009(E) is to present a methodology to assess the impact of High-altitude Electromagnetic Pulse (HEMP) and High Power Electromagnetic (HPEM) environments on electronic systems. In this context a system refers to a collection of sub-systems, equipment and components brought together to perform a function. The techniques associated with this methodology and their advantages and disadvantages will be presented along with examples of how the techniques can be applied to evaluate the...view more
- Technical specification66 pagesEnglish language
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Provides a basic description of the methods and means (e.g., instrumentation) for measuring responses arising from high-power transient electromagnetic parameters. These responses can include: - the electric (E) and/or magnetic (H) fields (e.g., incident fields or incident plus scattered fields within a system under test); - the current I (e.g., induced by a transient field or within a system under test); - the voltage V (e.g., induced by a transient field or within a system under test); - the c...view more
- Standard69 pagesEnglish language
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IEC 61000-2-13:2005 defines a set of typical radiated and conducted HPEM environment waveforms that may be encountered in civil facilities. Such threat environments can produce damaging effects on electrical and electronic equipment in the civilian sector, as described in IEC 61000-1-5. It is necessary to define the radiated and conducted environments, in order to develop protection methods. For the purposes of this standard, high-power conditions are achieved when the peak electric field exceed...view more
- Standard40 pagesEnglish language
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This part of IEC 61000 is a technical report that provides background material describing the motivation for developing IEC standards on the effects of high power electromagnetic (HPEM) fields, currents and voltages on civil systems. In the light of newly emerging transient antenna technology and the increasing use of digital electronics, the possibility of equipment being upset or damaged by these environments is of concern. This document begins with a general introduction to this subject and a...view more
- Technical report43 pagesEnglish language
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This part of IEC 61000 sets high-altitude electromagnetic pulse (HEMP) immunity requirements for electrical and electronic equipment intended for use indoors. The indoor HEMP environment depends on the electromagnetic shielding quality of a facility and the level of protection against the conducted environment. This standard is intended for all facility types including residential, commercial, light industrial, hospitals, heavy industrial, power substations and power generation facilities. This ...view more
- Standard39 pagesEnglish and French language
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Provides information about extant system-level high-altitude EMP (HEMP) simulators and their applicability as test facilities and validation tools for immunity test requirements. This report provides the first detailed listing of HEMP simulators throughout the worldand is the preliminary summary of this effort. It should be updated on a regular basis as the status of test facilities change. The main body of the report is a collection of datasheets describing 42 EMP simulators in 14 countries tha...view more
- Technical report108 pagesEnglish language
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This Technical Report covers guidelines for the mitigation of external electromagnetic influences impinging upon a facility, aimed at ensuring electromagnetic compatibility (EMC) among electrical and electronic apparatus or systems. These influences include lightning, RF transmitters, power-line and telecom transients, high-altitude electromagnetic pulse (HEMP) and other high-power electromagnetic transients. More particularly, this technical report is concerned with the arrangement of shielding...view more
- Technical report45 pagesEnglish language
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The purpose of this Technical Report is to describe the effects that have occurred during actual and simulated electromagnetic pulse testing throughout the world. These effects include those observed during the high-altitude nuclear tests conducted by the United States and the Soviet Union in 1962, and the HEMP simulator tests conducted by many countries during the years after atmospheric testing ended. In addition to direct effects, this technical report also contains information on HEMP coupli...view more
- Technical report46 pagesEnglish language
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Describes the immunity test levels and related test methods for electrical and electronic equipment and systems exposed to high-altitude electromagnetic pulse (HEMP) environments. Specifications for test equipment and instrumentation test set-up, test procedures, pass/fail criteria, and test documentation requirements are also defined by this standard. These tests are intended to demonstrate the immunity of electrical and electronic equipment when subjected to HEMP radiated and conducted electro...view more
- Standard95 pagesEnglish and French language
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Describes performance requirements, test methods and classification procedures for degrees of protection provided by empty enclosures against electromagnetic disturbances for frequencies between 10 kHz and 40 GHz. The shielding protection is measured for the purpose of demonstrating that the enclosure provides adequate shielding of electromagnetic energy to support acceptable performance of the complete assembled units when tested to applicable IEC standards. The purpose of this standard is to p...view more
- Standard51 pagesEnglish and French language
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The purpose of this publication is to help specify the immunity requirements of an item (e.g. equipment or subsystem) containing electrical or electronic parts to ensure that it will operate during and/or after exposure to a high-altitude electromagnetic pulse (HEMP) waveform. It provides basic guidance for the selection of immunity test levels for any component, device, equipment, subsystem or system which contains electrical circuits that may be disturbed by electromagnetic signals.
- Standard31 pagesEnglish and French language
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