EN 61241-1:2004
(Main)Electrical apparatus for use in the presence of combustible dust - Part 1: Protection by enclosures "tD"
Electrical apparatus for use in the presence of combustible dust - Part 1: Protection by enclosures "tD"
Applicable to electrical apparatus protected by enclosures and surface temperature limitation for use in areas where combustible dust may be present in quantities which could lead to a fire or explosion hazard. Specifies requirements for design, construction and testing of electrical apparatus. The ignition protection is based on the limitation of the maximum surface temperature of the enclosure and on other surfaces which could be in contact with dust and on the restriction of dust ingress into the enclosure by the use of dust-tight or dust-protected enclosures.
Elektrische Betriebsmittel zur Verwendung in Bereichen mit brennbarem Staub - Teil 1: Schutz durch Gehäuse "tD"
Matériels électriques pour utilisation en présence de poussières combustibles - Partie 1: Protection par enveloppes "tD"
Applicable aux matériels électriques protégés par enveloppe et par limitation de la température de surface, et destinés à être utilisés dans des lieux où la présence de poussières combustibles peut atteindre des quantités susceptibles d'engendrer un risque d'incendie ou d'explosion. Spécifie des exigences de conception, de construction et d'essais du matériel électrique. La protection contre l'inflammation est basée sur la limitation de la température maximale de surface de l'enveloppe et sur d'autres surfaces qui peuvent être en contact avec la poussière, et sur la limitation de la pénétration de poussière dans l'enveloppe, en utilisant des enveloppes étanches aux poussières ou protégées contre les poussières.
Električne naprave za uporabo v prisotnosti gorljivega prahu - 1. del: Zaščita z okrovom "tD" (IEC 61241-1:2004)
General Information
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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 1: Schutz durch Gehäuse
tDMatériels électriques pour utilisation en présence de poussières combustibles -- Partie 1: Protection par enveloppes
tDElectrical apparatus for use in the presence of combustible dust -- Part 1: Protection by enclosures
tD29.260.20Electrical apparatus for explosive atmospheresICS:Ta slovenski standard je istoveten z:EN 61241-1:2004SIST EN 61241-1:2005en01-april-2005SIST EN 61241-1:2005SLOVENSKI
STANDARDSIST EN 50281-1-1:2000/A1:2002SIST EN 50281-1-1:20001DGRPHãþD
EUROPEAN STANDARD
EN 61241-1 NORME EUROPÉENNE EUROPÄISCHE NORM
June 2004 CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61241-1:2004 E
ICS 29.260.20
English version
Electrical apparatus for use in the presence of combustible dust Part 1: Protection by enclosures "tD" (IEC 61241-1:2004)
Matériels électriques pour utilisation
en présence de poussières combustibles Partie 1: Protection par enveloppes "tD" (CEI 61241-1:2004)
Elektrische Betriebsmittel zur Verwendung in Bereichen mit brennbarem Staub Teil 1: Schutz durch Gehäuse "tD" (IEC 61241-1:2004)
This European Standard was approved by CENELEC on 2004-06-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Foreword The text of document 31H/168/FDIS, future edition 1 of IEC 61241-1, prepared by SC 31H, Apparatus for use in the presence of combustible dust, of IEC TC 31, Electrical apparatus for explosive atmospheres, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61241-1 on 2004-06-01. This part of EN 61241 is to be read in conjunction with EN 61241-0. The following dates were fixed: – latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement
(dop) 2005-03-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow) 2007-06-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 61241-1:2004 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60079-0 NOTE
Harmonized as EN 60079-0:2004 (not modified).
IEC 60079-7 NOTE Harmonized as EN 60079-7:2003 (not modified).
IEC 60093 NOTE Harmonized as HD 429 S1:1983 (not modified).
IEC 60192 NOTE Harmonized as EN 60192:2001 (not modified).
IEC 60216-1 NOTE Harmonized as EN 60216-1:2001 (not modified).
IEC 60216-2 NOTE Harmonized as HD 611.2 S1:1992 (not modified).
IEC 60243-1 NOTE Harmonized as EN 60243-1:1998 (not modified).
IEC 60662 NOTE Harmonized as EN 60662:1987 (modified).
IEC 60947-3 NOTE Harmonized as EN 60947-3:1999 (not modified).
ISO 178 NOTE
Harmonized as EN ISO 178:2003 (not modified).
ISO 527
NOTE Harmonized in EN ISO 527 series (not modified). __________ SIST EN 61241-1:2005
- 3 - EN 61241-1:2004
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60529 1989 Degrees of protection provided by enclosures (IP Code) EN 60529 + corr. May 1991 1993 A1 1999
A1
2000 IEC 61241-0 - 1) Electrical apparatus for use in the presence of combustible dust Part 0: General requirements - -
1) To be published. SIST EN 61241-1:2005
NORME INTERNATIONALECEIIEC INTERNATIONAL STANDARD 61241-1Première éditionFirst edition2004-05 Matériels électriques pour utilisation en présence de poussières combustibles – Partie 1: Protection par enveloppes «tD»
Electrical apparatus for use in the presence of combustible dust – Part 1: Protection by enclosures "tD"
Pour prix, voir catalogue en vigueur For price, see current catalogue IEC 2004
Droits de reproduction réservés
Copyright - all rights reserved Aucune partie de cette publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord écrit de l'éditeur. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission,
3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch
Web: www.iec.ch CODE PRIX PRICE CODE N Commission Electrotechnique InternationaleInternational Electrotechnical CommissionSIST EN 61241-1:2005
61241-1 IEC:2004 – 3 – CONTENTS FOREWORD.5 INTRODUCTION.9
1 Scope.13 2 Normative references.13 3 Terms and definitions.15 4 Construction.15 5 Practice A and practice B.15 6 Supplementary requirements for electrical apparatus protected by enclosures for practice A for use in zones 20, 21 and 22.15 7 Supplementary requirements for electrical apparatus protected by enclosures for practice B for use in zone 20 or 21.17 7.1 Joints.17 7.1.1 Plain joints.17 7.1.2 Spigotted joints.17 7.1.3 Gasketed joints.19 7.2 Operating rods, spindles or shafts.19 7.2.1 General.19 7.2.2 Running contact seals.19 7.2.3 Power shafts.19 7.2.4 Operating rods.21 7.3 Clearance of bolts.21 8 Verification and tests.23 8.1 General.23 8.2 Type tests.23 8.2.1 Tests for dust exclusion by enclosures.23 8.2.2 Thermal tests.27 9 Marking.27
Bibliography.29
Figure 1 – Plain joints.17 Figure 2 – Spigotted joints.17 Figure 3 – Gasketed joints.19 Figure 4 – Power shafts for speeds of 100r/min or more.21 Figure 5 – Clearance of bolts.23
Reference table.7 Table 1 – Plain joints.17 Table 2 – Gasketed joints.19 Table 3 – Power shafts for speeds of 100 r/min or more.21 Table 4 – Power shafts for speeds of less than 100 r/min.21
61241-1 IEC:2004 – 5 – INTERNATIONAL ELECTROTECHNICAL COMMISSION __________
ELECTRICAL APPARATUS FOR USE IN THE PRESENCE OF COMBUSTIBLE DUST –
Part 1: Protection by enclosures “tD”
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61241-1 has been prepared by subcommittee 31H: Apparatus for use in the presence of combustible dust, of IEC technical committee 31: Electrical apparatus for explosive atmospheres. This first edition of IEC 61241-1 has been compiled from the second edition of IEC 61241-1-1 which, together with the new IEC 61241-0*, supersedes IEC 61241-1-1. The text of this standard is based on the following documents: FDIS Report on voting 31H/168/FDIS 31H/175/RVD
Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. —————— * Being published. SIST EN 61241-1:2005
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