SIST EN 61241-2-2:2001

Electrical apparatus for use in the presence of combustible dust -- Part 2: Test methods -- Section 2: Method for determining the electrical resistivity of dust in layers

Specifies a test method to determine, by application of a d.c. voltage, the electrical resistivity of a layer of dust. Is to be used in the design, construction, testing and application of electrical apparatus for use in the presence of combustible dust. This publication has the status of a technical report.

Elektrische Betriebsmittel zur Verwendung in Bereichen mit brennbarem Staub -- Teil 2: Untersuchungsverfahren -- Hauptabshnitt 2: Verfahren zur Bestimmung des elektrischen Widerstandes von Staubschüttungen

Matériels électriques destinés à être utilisés en présence de poussières combustibles -- Partie 2: Méthodes d'essais -- Section 2: Méthode de détermination de la résistivité électrique des couches de poussières

Indique une méthode d'essai pour la détermination de la résistivité électrique d'une couche de poussière lorsqu'on y applique une tension continue. S'applique à la conception, à la construction, aux essais et à l'utilisation du matériel électrique destiné à être utilisé en présence de poussière combustible. Cette publication a le statut d'un rapport technique.

Električne naprave za uporabo v prisotnosti gorljivega prahu - 2. del: Preskusne metode -2. oddelek: Metoda določanja električne upornosti prahu v plasteh (IEC 61241-2-2:1993 + popravek 1994)

General Information

• Status: Withdrawn
• Publication Date: 31-Jan-2001
• Withdrawal Date: 04-May-2023
• ICS: 29.260.20 - Electrical apparatus for explosive atmospheres
• Technical Committee: EXP - Electrical apparatus for explosive atmospheres
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 05-May-2023
• Due Date: 28-May-2023
• Completion Date: 05-May-2023
• Directive: TRRTP131 - Tehnična smernica TSG-N-002:2009 - Nizkonapetostne električne inštalacije
• Mandate: BC/CEN/CLC/08-92 - BC/CEN/CLC/08-92
• Ref Project: EN 61241-2-2:1995 - Electrical apparatus for use in the presence of combustible dust - Part 2: Test methods - Section 2: Method for determining the electrical resistivity of dust in layers

Relations

• Replaced By: SIST EN ISO/IEC 80079-20-2:2016 - Explosive atmospheres - Part 20-2: Material characteristics - Combustible dusts test methods (ISO/IEC 80079-20-2:2016)
• Effective Date: 05-May-2023
• Replaces: SIST IEC/TR 61241-2-2:1998 - Electrical apparatus for use in the presence of combustible dust - Part 2: Test methods - Section 2: Method for determining the electrical resistivity of dust in layers
• Effective Date: 01-Feb-2001

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Elektrische Betriebsmittel zur Verwendung in Bereichen mit brennbarem Staub -- Teil 2: Untersuchungsverfahren -- Hauptabshnitt 2: Verfahren zur Bestimmung des elektrischen Widerstandes von StaubschüttungenMatériels électriques destinés à être utilisés en présence de poussières combustibles -- Partie 2: Méthodes d'essais -- Section 2: Méthode de détermination de la résistivité électrique des couches de poussièresElectrical apparatus for use in the presence of combustible dust -- Part 2: Test methods -- Section 2: Method for determining the electrical resistivity of dust in layers29.260.20Electrical apparatus for explosive atmospheresICS:Ta slovenski standard je istoveten z:EN 61241-2-2:1995SIST EN 61241-2-2:2001en01-februar-2001SIST EN 61241-2-2:2001SLOVENSKI
STANDARDSIST IEC/TR 61241-2-2:19981DGRPHãþD























RAPPORTCEITECHNIQUE - TYPE 2IECTECHNICAL1241-2-2REPORT - TYPE 2Première éditionFirst edition1993-08Matériels électriques destinés à être utilisésen présence de poussières combustibles -Partie 2:Méthodes d'essais -Section 2: Méthode de détermination dela résistivité électrique des couches de poussièresElectrical apparatus for use in thepresence of combustible dust -Part 2:Test methods -Section 2: Method for determining the electricalresistivity of dust in layers© CEI 1993 Droits de reproduction réservés — Copyright — all rights reservedAucune partie de cette publication ne peut être reproduite niutilisée sous quelque forme que ce soit et par aucun pro-cédé, électronique ou mécanique, y compris la photocopie etles microfilms, sans l'accord écrit de l'éditeur.No part of this publication may be reproduced or utilized inany form or by any means, electronic or mechanical,including photocopying and microfilm, without permissionin writing from the publisher.Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembé Genève, SuisseCommission Electrotechnique InternationaleInternational Electrotechnical CommissionMemnyHapoaHaa 3nelsrporexHHVecKaa KoMuccaa•CODE PRIXPRICE CODEPour prix, voir catalogue en vigueurFor price, see current catalogueIEC•J



Publication 1241-2-2 de la CEI(Première édition - 1993)Matériels électriques destinésà être utilisés en présencede poussières combustiblesPartie 2: Méthodes d’essaisSection 2: Méthode de déterminationde la résistivité électriquedes couches de poussièresIEC Publication 1241-2-2(First edition - 1993)Electrical apparatusfor use in the presenceof combustible dustPart 2: Test methodsSection 2: Method for determiningthe electrical resistivityof dust in layersC O R R I G E N D U M 1Page 146.3 Calcul de la résistivitSous la seconde équation de l’article, aulieu de:oρ est la résistivité en Ω;lire:oρ est la résistivité en Ω•m;Page 156.3 Calculation of resistivityUnder the second equation in the clause,instead of:whereρ is the resistivity in Ω;read:whereρ is the resistivity in Ω•m;Mai 1994May 1994







1241-2-2 ©IEC:1993– 3 –CONTENTSPageFOREWORD 5INTRODUCTION 9Clause1Scope 112Normative references 113Definitions 114 Test apparatus 135 Test sample 136 Procedure 136.1Preliminary measurement 136.2 Measurement of resistance 156.3Calculation of resistivity
157Test report 15Figures
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1241-2-2 © I EC:1993- 5 -INTERNATIONAL ELECTROTECHNICAL COMMISSIONELECTRICAL APPARATUS FOR USE IN THEPRESENCE OF COMBUSTIBLE DUST -Part 2: Test methods -Section 2: Method for determining the electrical resistivityof dust in layersFOREWORD1)The IEC (International Electrotechnical Commission) is a worldwide organization for standardizationcomprising all national electrotechnical committees (IEC National Committees). The object of the IEC is topromote international cooperation on all questions concerning standardization in the electrical andelectronic fields. To this end and in addition to other activities, the IEC publishes International Standards.Their preparation is entrusted to technical committees; any IEC National Committee interested in thesubject dealt with may participate in this preparatory work. International, governmental andnon-governmental organizations liaising with the IEC also participate in this preparation. The IECcollaborates closely with the International Organization for Standardization (ISO) in accordance withconditions determined by agreement between the two organizations.2)The formal decisions or agreements of the IEC on technical matters, prepared by technical committees onwhich all the National Committees having a special interest therein are represented, express, as nearly aspossible, an international consensus of opinion on the subjects dealt with.3)They have the form of recommendations for international use published in the form of standards, technicalreports or guides and they are accepted by the National Committees in that sense.4)In order to promote international unification, IEC National Committees undertake to apply IEC InternationalStandards transparently to the maximum extent possible in their national and regional standards. Anydivergence between the IEC Standard and the corresponding national or regional standard shall be clearlyindicated in the latter.The main task of IEC technical committees is to prepare International Standards. In excep-tional circumstances, a technical committee may propose the publication of a technicalreport of one of the following types:•type 1, when the required support cannot be obtained for the publication of an Inter-national Standard, despite repeated efforts;•type 2, when the subject is still under technical development or where for any otherreason there is the future but not immediate possibility of an agreement on an Inter-national Standard;•type 3, when a technical committee has collected data of a different kind from thatwhich is normally published as an International Standard, for example "state of the art".Technical reports of types 1 and 2 are subject to review within three years of publication todecide whether they can be transformed into International Standards. Technical reports oftype 3 do not necessarily have to be reviewed until the data they provide are consideredto be no longer valid or useful.IEC 1241-2-2 which is a technical report of type 2, has been prepared by sub-committee 31H:Apparatus for use in the presence of combustible dust, of IEC technical committee 31:Electrical apparatus for explosive atmospheres.



1241-2-2 © IEC:1993- 7 -The text of this technical report is based on the following documentsCommittee draftReport on voting
31 H(SEC)3231 H(SEC)35Full information on the voting for the approval of this technical report can be found in thereport on voting indicated in the above table.This document is issued in the type 2 technical report series of publications (according toG.4.2.2 of part 1 of the IEC/ISO Directives) as a "prospective standard for provisionalapplication in the field of electrical apparatus for use in the presence of combustible dustbecause it is untried and for experimental purposes only.This document is not to be regarded as an "International Standard". It is proposed forprovisional application so that information and experience of its use in practice may begathered. Comments on the content of this document should be sent to the IEC CentralOffice.A review of this type 2 technical report will be carried out not later than three years afterits publication, with the options of either extension for a further three years or conversionto an International Standard or withdrawal.IEC 1241 consists of the following parts, under the general title Electrical apparatus foruse in the presence of combustible dust:-Part 1: Electrical apparatus protected by enclosures.Section 1: 199X, Specification of apparatu
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