IEC PAS 60099-7:2004 pdf download Surge arresters – Part 7: Glossary of terms and definitions from IEC publications 60099-1 , 60099-4, 60099-6, 61 643-1 , 61 643-1 2, 61 643-21 , 61 643-31 1 , 61 643-321 , 61 643-331 and 61 643-341
Scope
This PAS compiles a list of terms and definitions relative to lEC publications from lECtechnical committee 37: Surge arresters, and subcommittees 37A: Surge protective devicesand 37B: Surge protective components, current at the date of this publication.
0Surge arresters – Non-linear resistor type gapped surge arresters for a.c.systems(IEC 60099-1:1991+A1:1999)
2.1
surge arresterdevice designed to protect electrical apparatus from high transient voltage and to limit theduration and frequently the amplitude of follow-current. The term “surge arrester” includes anyexternal series gap which is essential for the proper functioning of the device as installed forservice, regardless of whether or not it is supplied as an integral part of the device
NOTE Surge arresters are usually connected between the electrical conductors of a network and earth althougrthey may sometimes be connected across the windings of apparatus or between electrical conductors.
2.2non-linear resistor type gapped arrester:arrester having a single or a multiple spark-gap connected in series with one or more non-linear resistors
2.3
series gap of an arrester:
intentional gap or gaps between spaced electrodes in series with the non-inear series resistoror resistors of the arrester
2.4
non-linear series resistor of an arresterpart of the surge arrester which, by its non-linear voltage-current characteristics, acts as a lowresistance to the flow of high discharge currents thus limiting the voltage across the arresterterminals, and as a high resistance at normal power-frequency voltage thus limiting themagnitude of follow-current
2.5section of an arrestercomplete, suitably housed part of an arrester including series gaps and non-linear seriesresistors in such a proportion as is necessary to represent the behaviour of a completearrester with respect to a particular test
2.6
unit of an arrestercompletely housed part of an arrester which may be connected in series with other units toconstruct an arrester of higher voltage rating. A unit of an arrester is not necessarily a sectionof an arrester
Scope
This PAS compiles a list of terms and definitions relative to lEC publications from lECtechnical committee 37: Surge arresters, and subcommittees 37A: Surge protective devicesand 37B: Surge protective components, current at the date of this publication.
0Surge arresters – Non-linear resistor type gapped surge arresters for a.c.systems(IEC 60099-1:1991+A1:1999)
2.1
surge arresterdevice designed to protect electrical apparatus from high transient voltage and to limit theduration and frequently the amplitude of follow-current. The term “surge arrester” includes anyexternal series gap which is essential for the proper functioning of the device as installed forservice, regardless of whether or not it is supplied as an integral part of the device
NOTE Surge arresters are usually connected between the electrical conductors of a network and earth althougrthey may sometimes be connected across the windings of apparatus or between electrical conductors.
2.2non-linear resistor type gapped arrester:arrester having a single or a multiple spark-gap connected in series with one or more non-linear resistors
2.3
series gap of an arrester:
intentional gap or gaps between spaced electrodes in series with the non-inear series resistoror resistors of the arrester
2.4
non-linear series resistor of an arresterpart of the surge arrester which, by its non-linear voltage-current characteristics, acts as a lowresistance to the flow of high discharge currents thus limiting the voltage across the arresterterminals, and as a high resistance at normal power-frequency voltage thus limiting themagnitude of follow-current
2.5section of an arrestercomplete, suitably housed part of an arrester including series gaps and non-linear seriesresistors in such a proportion as is necessary to represent the behaviour of a completearrester with respect to a particular test
2.6
unit of an arrestercompletely housed part of an arrester which may be connected in series with other units toconstruct an arrester of higher voltage rating. A unit of an arrester is not necessarily a sectionof an arrester

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