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    I.S. EN 50020:2002

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - INTRINSIC SAFETY "I"

    Available format(s):  Hardcopy, PDF

    Superseded date:  02-03-2007

    Language(s):  English

    Published date:  01-01-2002

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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

    1. Scope
    2. Normative references
    3. Definitions
    4. Grouping and classification of intrinsically safe
         apparatus and associated apparatus
    5. Intrinsically safe levels of protection of electrical
         apparatus
    6. Apparatus construction
    7. Components on which intrinsic safety depends
    8. Infallible components, infallible assemblies of
         components and infallible connections
    9. Diode safety barriers
    10. Type verifications and type tests
    11. Routine verifications and tests
    12. Marking
    13. Documentation
    Annex A (normative) Assessment of intrinsically safe circuits
    Annex B (normative) Spark test apparatus for intrinsically safe
            circuits
    Annex C (informative) Measurement of creepage distances,
            clearances and separation distances through casting
            compound and through solid insulation
    Annex D (normative) Encapsulation
    Annex E (normative) Certification requirements for torches

    Abstract - (Show below) - (Hide below)

    Contains the specific requirements for the construction and testing of intrinsic safety electrical apparatus, type of protection "i", intended for use in potentially explosive atmospheres.

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

    Development Note To be read in conjunction with I.S. EN 50014: 1993 (02/2002)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Superseded
    Superseded By

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

    EN 50039:1980 Electrical apparatus for potentially explosive atmospheres - Intrinsically safe electrical systems 'i'
    HD 214 : 200S2 RECOMMENDED METHOD FOR DETERMINING THE COMPARATIVE TRACKING INDEX OF SOLID INSULATING MATERIALS UNDER MOIST CONDITIONS
    EN 60127-1:2006/A2:2015 MINIATURE FUSES - PART 1: DEFINITIONS FOR MINIATURE FUSES AND GENERAL REQUIREMENTS FOR MINIATURE FUSE-LINKS
    EN 60127-3:2015 Miniature fuses - Part 3: Sub-miniature fuse-links
    EN 60127-2:2014 Miniature fuses - Part 2: Cartridge fuse-links
    EN 50019:2000/corrigendum Apr. 2003 ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - INCREASED SAFETY "E"
    HD 566 : 200S1 THERMAL EVALUATION AND CLASSIFICATION OF ELECTRICAL INSULATION
    EN 60317-7:1994/A2:1998 SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES - PART 7: POLYIMIDE ENAMELLED ROUND COPPER WIRE, CLASS 220
    EN 60317-3 : 94 AMD 1 98 SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES - PART 3: POLYESTER ENAMELLED ROUND COPPER WIRE, CLASS 155
    EN 50284:1999 Special requirements for construction, test and marking of electrical apparatus of equipment group II, Category 1 G
    EN 60317-8:2010 Specifications for particular types of winding wires - Part 8: Polyesterimide enamelled round copper wire, class 180
    EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
    EN 50014:1997/A2:1999 ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - GENERAL REQUIREMENTS
    EN 50303:2000 Group I, Category M1 equipment intended to remain functional in atmospheres endangered by firedamp and/or coal dust
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