Norm

NEN-EN-IEC 61643-351:2017 en

Components for low-voltage surge protective devices - Part 351: Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT)

153,97

Over deze norm

Status Definitief
Aantal pagina's 54
Commissie Beleidscommissie Elektriciteitsvoorziening
Gepubliceerd op 01-03-2017
Taal Engels
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 defines test circuits and test methods for determining and verifying the SIT surge parameters. Preferred performance values for key parameters are given. IEC 61643-351 does not cover SIT operation under differential-mode lightning surge conditions.

Details

ICS-code 33.040.99
Nederlandse titel Components for low-voltage surge protective devices - Part 351: Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT)
Engelse titel Components for low-voltage surge protective devices - Part 351: Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT)

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