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  • BS EN 50020:2002

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    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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    Electrical apparatus for potentially explosive atmospheres. Intrinsic safety \'i\'

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  01-10-2009

    Language(s):  English

    Published date:  31-07-2006

    Publisher:  British Standards Institution

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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)

    Specifies the construction and testing of intrinsically safe apparatus, meant for use in potentially explosive atmospheres and for associated apparatus, which is meant for connection to intrinsically safe circuits which enter such atmospheres. Coverage includes: documentation, marking, and diode safety barriers. Also gives detailed definitions and annexes.

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

    Committee EXL/31/2
    Development Note Supersedes BS 5501-1(1977) and 89/25202 DC. (07/2002) Supersedes BS 1259(1958) (08/2006)
    Document Type Standard
    Publisher British Standards Institution
    Status Withdrawn
    Superseded By
    Supersedes

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

    BS 7924:1999 Code of practice for the repair and overhaul of certified electrical apparatus intended for use in mines susceptible to firedamp
    BS 5266-1:2005 Emergency lighting Code of practice for the emergency lighting of premises
    DEFSTAN 00-101(PT3)/1(2005) : 2005 DESIGN STANDARDS FOR EXPLOSIVES SAFETY IN MOD SHIPS AND SUBMARINES - PART 3: ELECTRICAL EQUIPMENT AND INSTALLATION
    DEFSTAN 00-101(PT3)/2(2008) : 2008 DESIGN STANDARDS FOR EXPLOSIVES SAFETY IN MOD SHIPS AND SUBMARINES - PART 3: ELECTRICAL EQUIPMENT AND INSTALLATION
    BS 6656:2002 Assessment of inadvertent ignition of flammable atmospheres by radio-frequency radiation. Guide
    DEFSTAN 02-605(PT1)/2(2003) : 2003 GUIDE TO SELECTION OF SENSORS FOR MEASUREMENT OF SYSTEM PARAMETERS - PART 1: SELECTION OF LIQUID LEVEL, TEMPERATURE AND PRESSURE SENSORS
    BS 6651:1999 Code of practice for protection of structures against lightning
    BS 6739:2009 Code of practice for instrumentation in process control systems: installation design and practice
    05/30124836 DC : DRAFT JULY 2005 BS 5266-1 - EMERGENCY LIGHTING - PART 1: CODE OF PRACTICE FOR THE EMERGENCY LIGHTING OF PREMISES
    09/30205684 DC : 0 BS 7375 - CODE OF PRACTICE FOR DISTRIBUTION OF ELECTRICITY ON CONSTRUCTION AND BUILDING SITES
    08/30136724 DC : DRAFT MAY 2008 BS 6739 - CODE OF PRACTICE FOR INSTRUMENTATION IN PROCESS CONTROL SYSTEMS - INSTALLATION DESIGN AND PRACTICE
    BS 6704:1996 Code of practice for selection, installation and maintenance of intrinsically safe electrical equipment in coal mines
    BS 10999:2010 Specification for distress signal units for the fire and rescue service
    09/30194709 DC : 0 BS 10999 - SPECIFICATION FOR DISTRESS SIGNAL UNITS FOR THE FIRE AND RESCUE SERVICE
    BS EN 1532:1997 Installation and equipment for liquefied natural gas. Ship to shore interface
    BS 6164:2001 Code of practice for safety in tunnelling in the construction industry

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

    IEC 60112:2003+AMD1:2009 CSV Method for the determination of the proof and the comparative tracking indices of solid insulating materials
    IEC 60127-3:2015 Miniature fuses - Part 3: Sub-miniature fuse-links
    IEC 60317-3:2004+AMD1:2010 CSV Specifications for particular types of winding wires - Part 3: Polyester enamelled round copper wire, class 155
    EN 50039:1980 Electrical apparatus for potentially explosive atmospheres - Intrinsically safe electrical systems 'i'
    IEC 60317-7:1990+AMD1:1997+AMD2:1997 CSV Specifications for particular types of winding wires - Part 7: Polyimide enamelled round copper wire, class 220
    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
    IEC 60317-8:2010 Specifications for particular types of winding wires - Part 8: Polyesterimide enamelled round copper wire, class 180
    EN 50019:2000/corrigendum Apr. 2003 ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - INCREASED SAFETY "E"
    IEC 60127-1:2006+AMD1:2011+AMD2:2015 CSV Miniature fuses - Part 1: Definitions for miniature fuses andgeneral requirements for miniature fuse-links
    IEC 60127-2:2014 Miniature fuses - Part 2: Cartridge fuse-links
    IEC 60085:2007 Electrical insulation - Thermal evaluation and designation
    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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