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  • BSI
    BS EN 61643-351:2017 Components for low-voltage surge protective devices - Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT)
    Edition: 2017
    $435.35
    / user per year

Description of BS EN 61643-351:2017 2017

IEC 61643-351:2016 defines test circuits and test methods for determining and verifying the SIT surge parameters. Preferred performance values for key parameters are given. Surge isolation transformers (SITs) are used for signal transformer applications with signal levels up to 400 V peak to peak. SITs are transformers, with or without an internal-winding screen, with a rated impulse withstand voltage greater than the peak voltage of the expected common-mode surge environment. SITs are applicable to components for surge protection against indirect and direct effects of lightning or other transient overvoltage. SITs are used to mitigate the onward propagation of common-mode voltage surges. This part of IEC 61643 does not cover SIT operation under differential-mode lightning surge conditions. Keywords: Surge isolation transformers (SITs)

Standard NumberBS EN 61643-351:2017
TitleComponents for low-voltage surge protective devices - Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT)
StatusUnder Review
Publication Date2017-02-28
Identical National Standard OfEN 61643-351:2017, IEC 61643-351:2016
DescriptorsSurge protection, Lightning, Safety devices, Circuits, Overvoltage, Transformers, Low voltage, Electric screens, Electrical insulation, Overvoltage protection, Isolating transformers, Ratings, Thermal resistance, Surges (electrical), Low-voltage equipment
ICS33.040.99 Other equipment for telecommunication systems
CommitteePEL/37
ISBN978 0 580 85903 8
PublisherBSI
Pages32

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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