IEC 60099 1 PDF

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IEC provides information, guidance, and recommendations for the selection and application of surge arresters to be used in three-phase systems with nominal voltages above 1 kV. It applies to gapless metal-oxide surge arresters as defined in IEC , to surge arresters containing both series and parallel gapped structure — rated 52 kV and less as defined in IEC and metal-oxide surge arresters with external series gap for overhead transmission and distribution lines EGLA as defined in IEC In Annex J, some aspects regarding the old type of SiC gapped arresters are discussed.

Surge arrester residual voltage is a major parameter to which most users have paid a lot of attention to when selecting the type and rating. Typical maximum residual voltages are given in Annex F. It is likely, however, that for some systems, or in some countries, the requirements on system reliability and design are sufficiently uniform, so that the recommendations of the present standard may lead to the definition of narrow ranges of arresters.

The user of surge arresters will, in that case, not be required to apply the whole process introduced here to any new installation and the selection of characteristics resulting from prior practice may be continued. Annexes H and I present comparisons and calculations between old line discharge classification and new charge classification. This third edition cancels and replaces the second edition published in This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous edition regarding the new surge arrester classification introduced in IEC Keywords: selection and application of surge arrestors, nominal voltages above 1 kV. Multi-user access to over 3, medical device standards, regulations, expert commentaries and other documents. Worldwide Standards We can source any standard from anywhere in the world. Learn more about the cookies we use and how to change your settings.

Online Tools. Search all products by. Surge arresters. Insulation co-ordination. UHV AC transmission systems. General system design. Click to learn more. This edition includes the following significant technical changes with respect to the previous edition regarding the new surge arrester classification introduced in IEC a Expanded discussion of comparison between the old and new classification and how to calculate or estimate the corresponding charge for different stresses.

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Accept and continue Learn more about the cookies we use and how to change your settings. BS EN Withstand voltage, Coordination, Three-phase current, Electrical protection equipment, Overvoltage protection, Lightning protection, Surge protection, Electrical insulation, Surge limiters, Rated voltage, Selection.

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IEC provides information, guidance, and recommendations for the selection and application of surge arresters to be used in three-phase systems with nominal voltages above 1 kV. It applies to gapless metal-oxide surge arresters as defined in IEC , to surge arresters containing both series and parallel gapped structure — rated 52 kV and less as defined in IEC and metal-oxide surge arresters with external series gap for overhead transmission and distribution lines EGLA as defined in IEC In Annex J, some aspects regarding the old type of SiC gapped arresters are discussed. Surge arrester residual voltage is a major parameter to which most users have paid a lot of attention to when selecting the type and rating.

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IEC 60099-1

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