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IEC
IEC 61643-351:2016

IEC 61643-351:2016

Current

Current

The latest, up-to-date edition.

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

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English - French

Published date

28-10-2016

Publisher

International Electrotechnical Committee

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions, symbols, abbreviations and
  acronyms
4 Service conditions
5 SIT surge conditions
6 Characteristics
7 Ratings
8 Identification
Annex A (informative) - 1,2/50 impulse
Bibliography

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)

DevelopmentNote
Stability Date: 2020. (10/2016)
DocumentType
Standard
Pages
54
PublisherName
International Electrotechnical Committee
Status
Current

IEC 61643-352:2018 Components for low-voltage surge protection - Part 352: Selection and application principles for telecommunications and signalling network surge isolation transformers (SITs)
I.S. EN IEC 61643-352:2018 COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTION - PART 352: SELECTI AND APPLICATION PRINCIPLES FOR TELECOMMUNICATIONS AND SIGNALLIN NETWORK SURGE ISOLATION TRANSFORMERS (SITS)
EN IEC 61643-352:2018 Components for low-voltage surge protection - Part 352: Selection and application principles for telecommunications and signalling network surge isolation transformers (SITs)
BS EN IEC 61643-352:2018 Components for low-voltage surge protection Selection and application principles for telecommunications and signalling network surge isolation transformers (SITs)

IEC 60721-3-9:1993 Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Section 9: Microclimates inside products
IEC 61558-2-4:2009 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers
ISO/IEC 11801:2002 Information technology Generic cabling for customer premises
IEC 61558-2-6:2009 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 2-6: Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers
IEC 61558-1:2017 Safety of transformers, reactors, power supply units and combinations thereof - Part 1: General requirements and tests
IEC 60076-1:2011 Power transformers - Part 1: General
IEC 60068-2-2:2007 Environmental testing - Part 2-2: Tests - Test B: Dry heat
IEC 60989:1991 Separating transformers, autotransformers, variable transformersand reactors.
IEC 61340-4-8:2014 Electrostatics - Part 4-8: Standard test methods for specific applications - Electrostatic discharge shielding - Bags
IEC 60721-3-3:1994+AMD1:1995+AMD2:1996 CSV Classification of environmental conditions - Part 3-3: Classification of groups of environmental parameters and their severities - Stationary use at weatherprotected locations
IEC 60068-2-1:2007 Environmental testing - Part 2-1: Tests - Test A: Cold
IEC 60060-1:2010 High-voltage test techniques - Part 1: General definitions and test requirements
ISO/IEC/IEEE 8802-3:2017 Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Part 3: Standard for Ethernet
IEC TR 60664-2-1:2011 Insulation coordination for equipment within low-voltage systems - Part 2-1: Application guide - Explanation of the application of the IEC 60664 series, dimensioning examples and dielectric testing
IEC TR 61340-1:2012 Electrostatics - Part 1: Electrostatic phenomena - Principles and measurements

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Hardcopy - English - French
PDF - English - French
PDF 3 Users - English - French
PDF 5 Users - English - French
PDF 9 Users - English - French
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