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  • IEC 60721-3-9:1993

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Section 9: Microclimates inside products

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  11-04-2024

    Language(s): 

    Published date:  20-07-1993

    Publisher:  International Electrotechnical Committee

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    Clause
    1. Scope
    2. Normative references
    3. Definitions
    4. General
    5. Classification of microclimatic conditions
    6. Types and marking of microclimatic classes
    Annex A

    Abstract - (Show below) - (Hide below)

    Defines classes of microclimatic conditions, to which components (basic parts, assemblies, built-in units) may be subjected inside products, and which are used under the climatic conditions classified in IEC 60721-3-3 and IEC 60721-3-4.

    General Product Information - (Show below) - (Hide below)

    Committee TC 104
    Development Note Also numbered as BS EN 60721-3.9. (12/2005) Stability Date: 2021. (10/2017)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Superseded
    Superseded By

    Standards Referenced By This Book - (Show below) - (Hide below)

    I.S. EN 60664-5:2007 INSULATION COORDINATION FOR EQUIPMENT WITHIN LOW-VOLTAGE SYSTEMS - PART 5: COMPREHENSIVE METHOD FOR DETERMINING CLEARANCES AND CREEPAGE DISTANCES EQUAL TO OR LESS THAN 2 MM
    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 60664-5:2003 Insulation coordination for equipment within low-voltage systems A comprehensive method for determining clearances and creepage distances equal to or less than 2 mm
    IEC TR 63040:2016 Guidance on clearances and creepage distances in particular for distances equal to or less than 2 mm - Test results of research on influencing parameters
    14/30297601 DC : 0 BS EN 61643-351 - COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 351: PERFORMANCE REQUIREMENTS AND TEST CIRCUITS FOR LIGHTNING ISOLATION TRANSFORMERS (LIT)
    NF EN 60664-5 : 2008 INSULATION COORDINATION FOR EQUIPMENT WITHIN LOW-VOLTAGE SYSTEMS - PART 5: COMPREHENSIVE METHOD FOR DETERMINING CLEARANCES AND CREEPAGE DISTANCES EQUAL TO OR LESS THAN 2 MM
    BS EN 60044-1:1999 Instrument transformers Current transformers
    CEI EN 61643-341 : 2002 COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 341: SPECIFICATION FOR THYRISTOR SURGE SUPPRESSOR (TSS)
    EN 61643-351:2017 Components for low-voltage surge protective devices - Part 351: Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT)
    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)
    PD IEC TR 63040:2016 Guidance on clearances and creepage distances in particular for distances equal to or less than 2 mm. Test results of research on influencing parameters
    IEC 61643-351:2016 Components for low-voltage surge protective devices - Part 351: Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT)
    CEI EN 60664-5 : 2008 INSULATION COORDINATION FOR EQUIPMENT WITHIN LOW-VOLTAGE SYSTEMS - PART 5: COMPREHENSIVE METHOD FOR DETERMINING CLEARANCES AND CREEPAGE DISTANCES EQUAL TO OR LESS THAN 2 MM
    I.S. EN 61643-351:2017 COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 351: PERFORMANCE REQUIREMENTS AND TEST METHODS FOR TELECOMMUNICATIONS AND SIGNALLING NETWORK SURGE ISOLATION TRANSFORMERS (SIT)
    IEC 60044-1:1996+AMD1:2000+AMD2:2002 CSV Instrument transformers - Part 1: Current transformers
    IEC 60664-5:2007 Insulation coordination for equipment within low-voltage systems - Part 5: Comprehensive method for determining clearances and creepage distances equal to or less than 2 mm
    EN 61643-341:2001 Components for low-voltage surge protective devices - Part 341: Specification for thyristor surge suppressors (TSS)
    BS EN 61643-341:2001 Low voltage surge protective devices Specification for thyristor surge suppressors (TSS)
    CEI 23-98 : 2007 GUIDANCE FOR THE CORRECT USE OF RESIDUAL CURRENT-OPERATED DEVICES (RCDS) FOR HOUSEHOLD AND SIMILAR USE
    CSA C60044-1 : 2007 : R2011 INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
    CSA C60044-1 : 2007 INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
    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)
    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 61643-351:2017 Components for low-voltage surge protective devices Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT)
    IEC 61643-341:2001 Components for low-voltage surge protective devices - Part 341: Specification for thyristor surge suppressors (TSS)
    EN 60044-1:1999/A2:2003 INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
    EN 60664-5:2007 Insulation coordination for equipment within low-voltage systems - Part 5: Comprehensive method for determining clearances and creepage distances equal to or less than 2 mm

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC 60721-1:1990+AMD1:1992+AMD2:1995 CSV Classification of environmental conditions - Part 1: Environmental parameters and their severities
    IEC 60721-2-1:2013 Classification of environmental conditions - Part 2-1: Environmental conditions appearing in nature - Temperature and humidity
    IEC 60721-3-0:1984+AMD1:1987 CSV Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Introduction
    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
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