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  • AS/NZS 61241.2.3:2000

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 use in the presence of combustible dust Test methods - Method for determining the minimum ignition energy of dust/air mixtures

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  30-06-2017

    Language(s):  English

    Published date:  03-02-2000

    Publisher:  Standards Australia

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

    1 - AS/NZS 61241.2.3:2000 ELECTRICAL APPARATUS FOR USE IN THE PRESENCE OF COMBUSTIBLE DUST - TEST METHODS-METHOD FOR DETERMINING...
    4 - PREFACE
    5 - CONTENTS
    7 - 1 Scope
    7 - 2 Normative references
    8 - 3 Definitions
    8 - 3.1 dust:
    8 - 3.2 combustible dust:
    8 - 3.3 spark discharge:
    8 - 3.4 minimum ignition energy (of a combustible dust/air mixture):
    8 - 3.5 ignition:
    8 - 3.6 ignition delay time:
    9 - 4 Test apparatus
    9 - 4.1 Spark generation circuit
    9 - 4.2 Test vessel
    9 - 5 Test sample
    10 - 6 Procedure
    10 - 6.1 Brief description
    11 - 6.2 Calibration
    11 - 6.3 Test report
    11 - 6.3.1 Product characteristics
    11 - 6.3.2 Characteristics of the test apparatus
    11 - 6.3.3 Results
    11 - 6.3.4 Report form
    12 - Annex A - Examples of spark-generating systems
    12 - A.1 General
    12 - A.2 Triggering by auxiliary spark using three-electrode system
    13 - A.3 Triggering by electrode movement
    13 - A.4 Triggering by voltage increase (trickle-charging circuit)
    14 - A.5 Triggering by auxiliary spark, using normal two-electrode system (trigger transformer in discharge circuit)
    20 - Annex B - Significance of minimum ignition energy
    23 - Annex C - Bibliography

    Abstract - (Show below) - (Hide below)

    Specifies a method of test to determine the minimum ignition energy of a dust/air mixture by an electrically generated high-voltage d.c. spark. This test method is intended to develop data to be used in deciding whether or not combustible dust/air mixtures are considered to be ignitable with respect to electrical discharge. This Standard is identical with and has been reproduced from IEC 61241-2-3:1994.

    Scope - (Show below) - (Hide below)

    This part of AS/NZS 61241 specifies a method of test to determine the minimum ignition energy of a dust/air mixture by an electrically generated high-voltage d.c. spark. This test method is intended to develop data to be used in deciding whether or not combustible dust/air mixtures are considered to be ignitable with respect to electrical discharge. It is intended that the dust be tested in a form (particle size, moisture content, etc.) representing conditions of actual use so that assessment of the hazard present can be made. Ignition energies determined by this method would be compared with ignition energies of other dusts to assess the relative hazard with regard to ignition by an electrical or electrostatic discharge, thereby permitting decisions to be made on the suitability of electrical apparatus for installation in areas where combustible dust is present.The test method is not suitable for use with recognized explosives, gunpowder, dynamite, explosives which do not require oxygen for combustion; pyrophoric substances, or substances or mixtures of substances which may under some circumstances behave in a similar manner. Where any doubt exists about the existence of a hazard due to explosive properties, an indication may be obtained by placing a very small quantity of the dust in question on the heated surface of the apparatus described in AS/NZS 61241.2.1, heated to 400°C.NOTE - Precautions should be taken to safeguard the health of personnel conducting the tests against the risk of fire, explosion and/or the effects, including toxic effects of combustion. Compliance with this international standard does not itself confer immunity from legal obligations.Annex B of this section includes guidance on the significance of minimum ignition energy with respect to electrostatic discharges.

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

    Committee EL-014
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    First published as AS/NZS 61241.2.3:2000.

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

    AS/NZS 4745:2004 Code of practice for handling combustible dusts
    AS 3846-2005 The handling and transport of dangerous cargoes in port areas
    AS/NZS 3004.2:2008 Electrical installations - Marinas and recreational boats Recreational boats installations
    AS/NZS 3019:2007 Electrical installations - Periodic verification
    AS/NZS 4745:2012 Code of practice for handling combustible dusts
    AS/NZS 61241.4:2002 Electrical apparatus for use in the presence of combustible dust Type of protection 'pD'
    HB 239:2011 Guidance on the repair and overhaul of electrical equipment for explosive atmospheres
    AS 60204.11-2006 Safety of machinery - Electrical equipment of machines Requirements for HV equipment for voltages above 1000 V a.c. or 1500 V d.c and not exceeding 36 kV (IEC 60204-11, Ed. 1.0 (2000) MOD)
    AS/NZS 2381.1:2005 Electrical equipment for explosive gas atmospheres - Selection, installation and maintenance - General requirements
    AS 60204.1-2005 Safety of machinery - Electrical equipment of machines General requirements (IEC 60204-1, Ed. 5 (FDIS) MOD)
    AS/NZS 4783.2:2002 Performance of electrical lighting equipment - Ballasts for fluorescent lamps Energy labelling and minimum energy performance standards requirements (Reconfirmed 2013)
    HB 13-2007 Electrical equipment for hazardous areas
    HB 13-2000 Electrical equipment for hazardous areas
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