BS EN 61241-4:2006 - Electrical apparatus for use in the presence of combustible dust. Type of protection "pD" – BSI British Standards

Find Similar Items

This product falls into the following categories.

You may find similar items within these categories by selecting from the choices below:

BS EN 61241-4:2006

Electrical apparatus for use in the presence of combustible dust. Type of protection "pD"

Status : Withdrawn, Superseded   Published : February 2007 Replaced By : BS EN 60079-0:2012+A11:2013, BS EN 60079-2:2014

WITHDRAWN TITLE
*To ask about withdrawn titles contact the
BSI Customer Services
cservices@bsigroup.com, +44 345 086 9001


BS EN 61241-4 specifies the requirements for the design, construction, testing and marking of electrical apparatus for use in combustible dust atmospheres. These are atmospheres in which a protective gas (air or inert gas), maintained at a pressure above that of the external atmosphere, is used to prevent the entry of dust which might otherwise lead to the formation of a combustible mixture within enclosures that do not contain a source of combustible dust.

This standard contains the specific requirements for construction and testing, including protective requirements that apply to electrical apparatus with type of protection pressurization "pD" intended for use in potentially combustible dust atmospheres.

Part 4 of BS EN 61241 includes the requirements for the construction of the enclosure and its associated components, including, if any, the inlet and outlet ducts for the protective gas, and for the safety provisions and devices necessary to ensure that pressurization is established and maintained for type of protection pressurization "pD".

This standard does not cover the requirements for pressurized rooms with or without internal sources of dust release, nor does it apply to dusts of explosives which do not require atmospheric oxygen for combustion or to pyrophoric substances.

Requirements for pressurized enclosures with an internal source of dust release are not included in this standard. This standard does not cover combined gas and dust hazard. Those requirements are under consideration.

The requirements contained in this standard are supplementary to those in IEC 61241-1-1.

Contents include

  • Scope
  • Normative references
  • Definitions
  • Pressurization principle
  • Protective gas
  • Automatic disconnection
  • Cleaning
  • Discharge of protective gas
  • General constructional requirements
  • Electrical performance of apparatus
  • Mechanical strength
  • Apertures
  • Electrical connections to enclosures
  • Doors and covers
  • Temperature limits
  • Safety provisions and safety devices (except for static pressurization)
  • Pressure- or flow-activated devices
  • Electrical supply
  • Switching off electrical supply
  • Failure of pressurization
  • Level of overpressure
  • Possible sources of ignition
  • Enclosed components
  • Separate enclosures
  • Safety provisions and safety devices for static pressurization
  • Supply of protective gas
  • Type of gas
  • Second source of supply
  • Temperature
  • Verification and tests
  • Type verification and tests
  • Overpressure test
  • Minimum overpressure test
  • Leakage test
  • Impact test
  • Routine tests
  • Marking
    Pressurized enclosure
  • Additional marking
  • Pressurized enclosures protected by static pressurization
  • Any other marking required
  • Ducts for protective gas supply
  • Installation requirements for pressurization
  • Normative references to international publications with their corresponding European publications
  • Coverage of Essential Requirements of EC Directives
  • Examples of the static overpressure along the ducts and through a pressurized enclosure
  • Example of the static overpressure in a pressurized electric rotating machine with fan
  • Requirements on failure of pressurization
  • Summary of protection requirements for enclosures
  •  

    •  

    BS EN 61241-0:2006 replaces BS 6467-1:1985 an

    d BS 6467-2:1988 which are withdrawn, and BS EN 50281-1-1:1999 which remains current as obsolescent until 1 October 2008.




  • Standard NumberBS EN 61241-4:2006
    TitleElectrical apparatus for use in the presence of combustible dust. Type of protection "pD"
    StatusWithdrawn, Superseded
    Publication Date28 February 2007
    Withdrawn Date31 January 2015
    Cross ReferencesIEC 60034-1:1996, IEC 61241, IEC 61241-1-1:1999, IEC 61241-1-2:1999, IEC 61241-3:1997, 94/9/EC
    Replaced ByBS EN 60079-0:2012+A11:2013, BS EN 60079-2:2014
    ReplacesBS IEC 61241-4:2001, IEC 61241-4:2001
    International RelationshipsIEC 62453-301:2009,EN 61241-4:2006
    DescriptorsExplosive atmospheres, Design, Verification, Type p protected electrical equipment, Electrical equipment, Type testing, Dust explosions, Fire risks, Safety measures, Electrical safety, Protected electrical equipment, Electric enclosures, Dust, Flammable atmospheres
    ICS25.040.40
    29.260.20
    35.100.05
    35.110
    Title in FrenchMatériels électriques destinés à être utilisés en présence de poussières combustibles. Type de protection "pD"
    Title in GermanElektrische Betriebsmittel zur Verwendung in Bereichen mit brennbarem Staub. Zündschutzart "pD"
    CommitteeEXL/31
    ISBN978 0 580 50215 6
    PublisherBSI
    FormatA4
    DeliveryNo
    Pages28
    File Size704 KB
    Price£176.00


    WITHDRAWN TITLE
    *To ask about withdrawn titles contact the
    BSI Customer Services
    cservices@bsigroup.com, +44 345 086 9001
     Your basket
    Your basket is empty

    Multi-user access to over 3,500 medical device standards, regulations, expert commentaries and other documents


    Collaborate, Innovate, Accelerate.


    BSOL

    The faster, easier way to work with standards


    Worldwide Standards
    We can source any standard from anywhere in the world


    Customers who bought this product also bought

    • BS EN 61241-11:2006
      Electrical apparatus for use in the presence of combustible dust Protection by intrinsic safety "iD"
    • BS EN 61241-18:2004
      Electrical apparatus for use in the presence of combustible dust Protection by encapsulation 'mD'
    • BS EN 60079-2:2007
      Explosive atmospheres Equipment protection by pressurized enclosure "p"