• SN EN 60079-15 : 2005

    Current The latest, up-to-date edition.

    ELECTRICAL APPARATUS FOR EXPLOSIVE GAS ATMOSPHERES - PART 15: CONSTRUCTION, TEST AND MARKING OF TYPE OF PROTECTION "N" ELECTRICAL APPARATUS

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    Published date:  12-01-2013

    Publisher:  Swiss Standards

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

    1 Scope
    2 Normative references
    3 Definitions
    4 General
       4.1 Potential ignition sources
       4.2 Apparatus grouping
       4.3 Temperatures
       4.4 Electrical apparatus
       4.5 Ex components
       4.6 Other requirements
    5 Construction
       5.1 Degree of protection
       5.2 Mechanical strength
       5.3 Guards for light transmitting parts
       5.4 Circulating currents
       5.5 Non-metallic enclosures, non-metallic parts of enclosures
    6 Connection facilities and wiring
       6.1 General
       6.2 Connection for external conductors
    7 Clearances, creepage distances and separations
    8 Electric strength
       8.1 Insulation from earth or frame
       8.2 Insulation between conductive parts
    9 Supplementary requirements for non-sparking rotating machines
       9.1 General
       9.2 Degree of protection
       9.3 Connection facilities for external conductors
       9.4 Neutral point connections
       9.5 Radial air gap
       9.6 Ventilation systems
       9.7 Bearing seals and shafts seals
       9.8 Rotor cages
       9.9 Surface temperature limitations
    10 Supplementary requirements for non-sparking fuses and fuse
       assemblies
    11 Supplementary requirements for non-sparking luminaires
       11.1 General
       11.2 Construction
       11.3 Other apparatus containing light sources
    12 Supplementary requirements for non-sparking instruments and low
       power apparatus
    13 Supplementary requirements for non-sparking current transformers
    14 Supplementary requirements for non-sparking plugs and sockets
    15 Supplementary requirements for non-sparking cells and batteries
       15.1 Categorization of cells and batteries
       15.2 General requirements for cells and batteries of types 1 and 2
       15.3 Charging of type 1 cells and batteries
       15.4 Charging of type 2 cells and batteries
       15.5 Requirements for type 3 secondary batteries
       15.6 Verification and tests
    16 Other electrical apparatus
    17 General supplementary requirements for apparatus producing arcs,
       sparks or hot surfaces
    18 Supplementary requirements for enclosed-break devices and
       non-incendive components producing arcs, sparks or hot surfaces
       18.1 Type testing
       18.2 Ratings
       18.3 Construction of enclosed-break devices
    19 Supplementary requirements for hermetically sealed devices
       producing arcs, sparks or hot surfaces
    20 Supplementary requirements for sealed devices or encapsulated
       devices producing arcs, sparks or hot surfaces
       20.1 Sealed devices or encapsulated devices other than for
             luminaries
       20.2 Encapsulated devices for luminaries
       20.3 Sealed devices for luminaries
    21 Supplementary requirements for energy-limited apparatus and
       circuits producing arcs, sparks or hot surfaces
       21.1 General
       21.2 Associated energy-limited apparatus
       21.3 Energy-limited apparatus
       21.4 Self protected energy-limited apparatus
       21.5 Separation of conducting parts
       21.6 Plugs and sockets
       21.7 Protection against polarity reversal
       21.8 Requirements for components on which energy limitation
             depends
    22 Supplementary requirements for restricted-breathing enclosures
       protecting apparatus producing arcs, sparks or hot surfaces
    23 Supplementary requirements for n-pressurization protecting
       apparatus producing arcs, sparks or hot surfaces
       23.1 Forms of n-pressurization
       23.2 Requirements for n-pressurization enclosures
       23.3 Temperature limits
       23.4 Safety provisions and safety devices (except for static
             pressurization)
       23.5 Safety provisions and safety devices for static pressurization
       23.6 Supply of protective gas
    24 General information on verification and tests
    25 Specification documentation
    26 Type tests
       26.1 General
       26.2 Test configuration
       26.3 Tests for enclosures
       26.4 Test for cable entry clamping method
       26.5 Test for enclosed-break devices and non-incendive
             components
       26.6 Tests for sealed devices and encapsulated devices
       26.7 Assessment and test of energy-limited apparatus and circuits
       26.8 Tests for restricted-breathing enclosures
       26.9 Test for apparatus with n-pressurization
       26.10 Test for screw lampholders
       26.11 Test for starter holders for luminaires
       26.12 Tests for ballasts in circuits with ignitors
       26.13 Tests for electronic starters for tubular fluorescent lamps and
             for ignitors for high pressure sodium or metal halide lamps
       26.14 Test for wiring of luminaries subject to high-voltage impulses
             from ignitors
       26.15 Shock test for batteries
       26.16 Insulation resistance test for batteries
    27 Routine Verification and tests
       27.1 General
       27.2 Specific routine tests
    28 Marking
    29 Instructions
    30 Manufacturer's responsibility
    Annex ZA (normative) Normative references to international publications
             with their corresponding European publication
    Bibliography
    Figures
    Tables

    Abstract - (Show below) - (Hide below)

    Describes requirements for the construction, testing and marking for Group II electrical apparatus with type of protection, "n" intended for use in explosive gas atmospheres.

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

    Development Note Supersedes SN EN 50021 (08/2004)
    Document Type Standard
    Publisher Swiss Standards
    Status Current
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