Hivatkozási szám

MSZ EN 60099-5:2014

Dokumentumazonosító

157763

Cím

Túlfeszültség-levezetők. 5. rész: Kiválasztási és alkalmazási ajánlások (IEC 60099-5:2013)

Angol cím

Surge arresters. Part 5: Selection and application recommendations (IEC 60099-5:2013)

Alkalmazási terület

This part of IEC 60099 is not a mandatory standard but provides information, guidance, and recommendations for the selection and application of surge arresters to be used in threephase systems with nominal voltages above 1 kV. It applies to gapless metal-oxide surge arresters as defined in IEC 60099-4, to surge arresters containing both series and parallel gapped structure – rated 52 kV and less as defined in IEC 60099-6 and metal-oxide surge arresters with external series gap for overhead transmission and distribution lines (EGLA) as defined in IEC 60099-8. In Annex H, some aspects regarding the old type of SiC gapped arresters are discussed. The principle of insulation coordination for an electricity system is given in IEC 60071 and IEC 60071-2 standards. Basically the insulation coordination process is a risk management aiming to ensure the safe, reliable and economic design and operation of high voltage electricity networks and substations. The use of surge arrester helps to achieve a system and equipment insulation level and still maintaining an acceptable risk and the best economic of scale. The introduction of analytical modelling and simulation of power system transients further optimise the equipment insulation level. The selection of surge arresters has become more and more important in the power system design and operation. It is worthwhile to note that the reliability of the power system and equipment is dependent on the safety margin adopted by the user in the design and selection of the equipments and surge arresters. Surge arrester residual voltage is a major parameter of which most users have paid a lot of attention to when selecting the type and rating. The typical maximum surge arresters residual voltage are given in Annex F. It is likely, however, that for some systems, or in some countries, the system reliability requirements and design are sufficiently uniform 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.

ICS

29.120.50 Olvadóbiztosítók és egyéb, túláram ellen védő készülékek

29.240.10 Alállomások. Túlfeszültség-levezetők

Műszaki Bizottság

A szabvány nyelve

angol

Az érvényesség kezdete

2014-04-01

A visszavonás napja

2021-02-23

Forrás

idt IEC 60099-5:2013; idt EN 60099-5:2013

Előd

MSZ EN 60099-5:1999, MSZ EN 60099-5:1996/A1:2002

Utód

MSZ EN IEC 60099-5:2018

Módosítás

Kiegészítő információk

SZK-közlemények

Kapcsolódó európai jogszabály

A szabvány

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