• BS EN 50021:1999

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    Electrical apparatus for potentially explosive atmospheres. Type of prot ection \'n\'

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  01-06-2008

    Language(s):  English

    Published date:  17-03-2006

    Publisher:  British Standards Institution

    Add To Cart

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

    Foreword
    Section One: General
    1 Scope
    2 Normative references
    3 Definitions
    4 General requirements
    Section Two: Requirements for all electrical apparatus
    5 General
    6 Construction
    7 Connection facilities and wiring
    8 Clearances, creepage distances and separations
    9 Electric strength
    Section Three: Supplementary requirements for non-sparking
    apparatus
    10 Rotating machines
    11 Fuses and fuse assemblies
    12 Luminaires
    13 Instruments and low-power apparatus
    14 Current transformers
    15 Plugs and sockets
    16 Cells and batteries
    Section Four: Supplementary requirements for apparatus
    producing arcs, sparks or hot surfaces
    17 General
    18 Enclosed-break devices and non-incendive components
    19 Hermetically sealed device
    20 Sealed device or encapsulated device
    21 Energy-limited apparatus and circuits
    22 Restricted-breathing enclosures
    23 Simplified pressurization
    Section Five: Verification and testing
    24 General
    25 Documents
    26 Type tests
    27 Routine verifications and tests
    Section Six: Marking and documentation
    28 Marking
    29 Documentation
    30 Manufacturer's responsibility
    Annex A (normative) Assessment of energy-limited
    apparatus and circuits by reference curves and tables

    Abstract - (Show below) - (Hide below)

    Defines requirements for construction, testing and marking of Group II electrical apparatus with type of protection "n", meant to be used solely in areas where explosive atmospheres of gas, vapour and mist are not likely to occur, or if they do, only infrequently or for a short time.

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

    Committee EXL/31
    Development Note Supersedes BS 6941(1988). (09/2003) Supersedes BS 5000-16(1997). (03/2006) Inactive for the new design. (07/2006)
    Document Type Standard
    Publisher British Standards Institution
    Status Withdrawn
    Superseded By
    Supersedes

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

    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 6739:2009 CODE OF PRACTICE FOR INSTRUMENTATION IN PROCESS CONTROL SYSTEMS: INSTALLATION DESIGN AND PRACTICE
    08/30136724 DC : DRAFT MAY 2008 BS 6739 - CODE OF PRACTICE FOR INSTRUMENTATION IN PROCESS CONTROL SYSTEMS - INSTALLATION DESIGN AND PRACTICE
    BS 5410-2:1978 CODE OF PRACTICE FOR OIL FIRING - INSTALLATIONS OF 44 KW AND ABOVE OUTPUT CAPACITY FOR SPACE HEATING HOT WATER AND STEAM SUPPLY PURPOSES

    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
    EN 60068-2-75:2014 Environmental testing - Part 2-75: Tests - Test Eh: Hammer tests
    EN 60924:1991/A1:1994 SPECIFICATION FOR GENERAL AND SAFETY REQUIREMENTS FOR D.C. SUPPLIED ELECTRONIC BALLASTS FOR TUBULAR FLUORESCENT LAMPS
    EN 61048:2006/A1:2016 AUXILIARIES FOR LAMPS - CAPACITORS FOR USE IN TUBULAR FLUORESCENT AND OTHER DISCHARGE LAMP CIRCUITS - GENERAL AND SAFETY REQUIREMENTS (IEC 61048:2006/A1:2015)
    HD 214 : 200S2 RECOMMENDED METHOD FOR DETERMINING THE COMPARATIVE TRACKING INDEX OF SOLID INSULATING MATERIALS UNDER MOIST CONDITIONS
    EN 60238 : 2004 AMD 2 2011 EDISON SCREW LAMPHOLDERS (IEC 60238:2004/A2:2011)
    EN 60034-1:2010/corrigendum Oct. 2010 ROTATING ELECTRICAL MACHINES - PART 1: RATING AND PERFORMANCE
    EN 60920:1991/A11:2000 BALLAST FOR TUBULAR FLUORESCENT LAMPS - GENERAL AND SAFETY REQUIREMENTS
    EN 50020:2002 Electrical apparatus for potentially explosive atmospheres - Intrinsic safety 'i'
    ISO 4892:1981 Plastics Methods of exposure to laboratory light sources
    HD 625.1 : 200S1 INSULATION COORDINATION FOR EQUIPMENT WITHIN LOW-VOLTAGE SYSTEMS - PRINCIPLES, REQUIREMENTS AND TESTS
    EN 60400:2017 Lampholders for tubular fluorescent lamps and starterholders
    IEC 60216-2:2005 Electrical insulating materials - Thermal endurance properties - Part 2: Determination of thermal endurance properties of electrical insulating materials - Choice of test criteria
    EN 60947-1:2007/A2:2014 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 1: GENERAL RULES (IEC 60947-1:2007/A2:2014)
    HD 611.1 : 200S1 GUIDE FOR THE DETERMINATION OF THERMAL ENDURANCE PROPERTIES OF ELECTRICAL INSULATING MATERIALS - GENERAL GUIDELINES FOR AGEING PROCEDURES AND EVALUATION OF TEST RESULTS
    EN 60927:2007/A1:2013 AUXILIARIES FOR LAMPS - STARTING DEVICES (OTHER THAN GLOW STARTERS) - PERFORMANCE REQUIREMENTS (IEC 60927:2007/A1:2013 (34C/951/CDV))
    EN 60060-2:2011 High-voltage test techniques - Part 2: Measuring systems
    EN 60068-2-27:2009 Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock
    EN 60928:1995/A1:1999 AUXILIARIES FOR LAMPS - A.C. SUPPLIED ELECTRONIC BALLASTS FOR TUBULAR FLUORESCENT LAMPS - GENERAL AND SAFETY REQUIREMENTS
    EN 61049:1993 Capacitors for use in tubular fluorescent and other discharge lamp circuits - Performance requirements
    EN 60269-3:1995/A1:2003 LOW-VOLTAGE FUSES - PART 3: SUPPLEMENTARY REQUIREMENTS FOR FUSES FOR USE BY UNSKILLED PERSONS (FUSES MAINLY FOR HOUSEHOLD AND SIMILAR APPLICATIONS)
    EN 60926:1996/A1:1999 AUXILIARIES FOR LAMPS - STARTING DEVICES (OTHER THAN GLOW STARTERS) - GENERAL AND SAFETY REQUIREMENTS
    EN 60155:1995/A2:2007 GLOW-STARTERS FOR FLUORESCENT LAMPS
    EN 61184:2017 Bayonet lampholders
    ISO 179:1993 Plastics Determination of Charpy impact strength
    EN 60662:2012 High-pressure sodium vapour lamps - Performance specifications
    EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
    EN 60922:1997 Auxiliaries for lamps - Ballasts for discharge lamps (excluding tubular fluorescent lamps) - General and safety requirements
    HD 611.2 : 200S1 GUIDE FOR THE DETERMINATION OF THERMAL ENDURANCE PROPERTIES OF ELECTRICAL INSULATING MATERIALS - CHOICE OF TEST CRITERIA
    EN 50014:1997/A2:1999 ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - GENERAL REQUIREMENTS
    IEC 60664-1:2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
    IEC 60216-1:2013 Electrical insulating materials - Thermal endurance properties - Part 1: Ageing procedures and evaluation of test results
    EN 60034-5:2001/A1:2007 ROTATING ELECTRICAL MACHINES - PART 5: DEGREES OF PROTECTION PROVIDED BY THE INTEGRAL DESIGN OF ROTATING ELECTRICAL MACHINES (IP CODE) - CLASSIFICATION
    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective