1、November 2015 English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.220.40; 53.040.20!%GTW“23649
2、52www.din.deDIN EN 12882Conveyor belts for general purpose use Electrical and flammability safety requirements;English version EN 12882:2015,English translation of DIN EN 12882:2015-11Frdergurte fr allgemeine Anwendung Elektrische und brandtechnische Sicherheitsanforderungen;Englische Fassung EN 128
3、82:2015,Englische bersetzung von DIN EN 12882:2015-11Courroies transporteuses usage gnral Prescriptions de scurit lectrique et protection contre linflammabilit;Version anglaise EN 12882:2015,Traduction anglaise de DIN EN 12882:2015-11SupersedesDIN EN 12882:2010-03www.beuth.deDTranslation by DIN-Spra
4、chendienst.In case of doubt, the German-language original shall be considered authoritative.Document comprises 16 pages 11.15 DIN EN 12882:2015-11 2 A comma is used as the decimal marker. National foreword This document (EN 12882:2015) has been prepared by Technical Committee CEN/TC 188 “Conveyor be
5、lts” (Secretariat: SNV, Switzerland). The responsible German body involved in its preparation was DIN-Normenausschuss Kautschuktechnik (DIN Standards Committee Rubber Technology), Working Committee NA 045-02-05 AA Frdergurte (Spiegelgremium zu CEN/TC 188; ISO/TC 41/SC 3). Amendments This standard di
6、ffers from DIN EN 12882:2010-03 as follows: a) the standard has been technically and editorially revised; b) the requirements on testing electrical conductivity have been removed from the text for all categories of light conveyor belts, with the exception of categories 1, 2A und 2B; c) the requireme
7、nt on flame retardation has been supplemented for categories 4A, 4B, 5A, 5B and 5C; d) alternative fire simulations have been added for categories 4A, 4B, 5A, 5B and 5C. Previous editions DIN EN 12882: 2002-04, 2010-03 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12882 August 2015 ICS 53.040
8、.20 Supersedes EN 12882:2008English Version Conveyor belts for general purpose use - Electrical and flammability safety requirements Courroies transporteuses usage gnral - Prescriptions de scurit lectrique et protection contre linflammabilit Frdergurte fr allgemeine Anwendung - Elektrische und brand
9、technische Sicherheitsanforderungen This European Standard was approved by CEN on 27 June 2015. CEN 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-d
10、ate lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translatio
11、n under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Fo
12、rmer Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMI
13、T EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12882:2015 EEN 12882:2015 (E) 2 Contents Page European
14、foreword .3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Safety requirements 6 4.1 General 6 4.2 Electrical conductivity .6 4.3 Flame retardation .6 4.4 Fire simulation .7 4.5 Drum friction 7 5 Safety categories .7 5.1 Category 1 7 5.2 Category 2A 7 5.3 Category 2B
15、 7 5.4 Category 3A 8 5.5 Category 3B 8 5.6 Category 4A 8 5.7 Category 4B 8 5.8 Category 5A 8 5.9 Category 5B 9 5.10 Category 5C 9 Annex A (informative) Suggested belt approval / certification options 12 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements
16、 of EC Directive 2006/42/EC . 13 Bibliography . 14 DIN EN 12882:2015-11 EN 12882:2015 (E) 3 European foreword This document (EN 12882:2015) has been prepared by Technical Committee CEN/TC 188 “Conveyor belts”, the secretariat of which is held by SNV. This document supersedes EN 12882:2008. This Euro
17、pean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2016, and conflicting national standards shall be withdrawn at the latest by February 2016. The main changes with respect to the previous edition ar
18、e listed below: electrical conductivity test requirements for light conveyor belts have been removed from all categories except 1, 2A and 2B; the requirement for flame retardation testing has been added to category 4A, 4B, 5A, 5B and 5C; alternative fire simulation tests have been added to category
19、4A, 4B, 5A, 5B and 5C. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by
20、 the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national stand
21、ards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lu
22、xembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 12882:2015-11 EN 12882:2015 (E) 4 Introduction This document is a type C standard as stated in EN ISO 12100. The machinery concerned and the extent t
23、o which hazards, hazardous situations and events are covered are indicated in the scope of this document. When provisions of this type C standard are different from those which are stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of the othe
24、r standards, for machines that have been designed and built according to the provisions of this type C standard. During the preparation of this European Standard, the hazards which have been identified as being directly related to the use of conveyor belts are: a) hazards associated with the dischar
25、ge of static electrical energy; b) hazards associated with the impingement of small naked flames on the cover and/or carcass of a conveyor belt at rest; c) hazards caused by the stalling of a conveyor belt and the continued operation of the driving mechanism causing localized heating of the conveyor
26、 belt through contact with the driving drum or cylinder or some other source of frictional heat; d) hazards caused by the propagation of a flame along a belt which has been exposed to a relatively high energy source such as a fire. The risk, or probable rate of occurrence of these hazards and the de
27、gree of harm they can cause will vary depending upon the particular circumstances of the application or site of application, which are many and varied. Consequently, the level of safety required will vary from one application to another, depending upon the risks judged to be pertinent. The hazards l
28、isted above should not be taken as the only properties affecting safety in operation. Other aspects such as health or environmental requirements should be considered. Depending on the individual end use requirement, these other factors can affect the category of belt selected and additional safety p
29、recautions may need to be employed. This European Standard is therefore designed to enable the user to select the category of conveyor belt most suited to the particular circumstances of the application. DINEN 12882:2015-11EN 12882:2015 (E) 5 1 Scope This European Standard specifies electrical and f
30、lammability safety requirements for general purpose conveyor belts not intended for use in underground installations and a means of categorizing conveyor belts in terms of the level of safety sought in their end use application. This European Standard does not provide electrical safety requirements
31、for volume resistance which may be measured by the methods in EN ISO 21178 and which is relevant to some types of light conveyor belts. This European Standard is not applicable to conveyor belts which are manufactured before the date of publication of this document by CEN. NOTE 1 Directive 94/9/EC c
32、oncerning equipment and protective systems intended for use in potentially explosive atmospheres can be applicable to the type of machine or equipment covered by this European Standard. The present standard is not intended to provide means of complying with the essential health and safety requiremen
33、ts of Directive 94/9/EC, this being covered in EN 14973. NOTE 2 EN 12882 is not a product standard but is intended to help users of conveyor belts to select the required electrical and flammability safety properties needed following a suitable risk assessment. No requirements are, therefore, include
34、d for marking, information to be supplied, etc., these matters being covered in relevant product standards such as EN ISO 14890 and EN ISO 15236-1. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its applicati
35、on. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1554:2012, Conveyor belts - Drum friction testing EN 12881-1:2014, Conveyor belts - Fire simulation flammability testing - Part 1: Pr
36、opane burner tests EN ISO 284, Conveyor belts - Electrical conductivity - Specification and test method (ISO 284) EN ISO 340, Conveyor belts - Laboratory scale flammability characteristics - Requirements and test method (ISO 340) EN ISO 21178, Light conveyor belts - Determination of electrical resis
37、tances (ISO 21178) EN ISO 21179, Light conveyor belts - Determination of the electrostatic field generated by a running light conveyor belt (ISO 21179) EN ISO 21183-1, Light conveyor belts - Part 1: Principal characteristics and applications (ISO 21183-1) 3 Terms and definitions For the purposes of
38、this document, the following terms and definitions apply. 3.1 afterflame flame which persists after the ignition source has been removed 3.2 afterglow persistence of glowing, after cessation of flaming or, if no flaming occurs, after the ignition source has been removed DIN EN 12882:2015-11 EN 12882
39、:2015 (E) 6 3.3 flame, noun zone of combustion in the gaseous phase usually with emission of light 3.4 flame, verb to undergo combustion in the gaseous phase with emission of light 3.5 glowing made luminous by heat, (without flame) 3.6 undamaged part remaining of a conveyor belt after the terminatio
40、n of the propane gallery fire test described in accordance with EN 12881-1 and which shows no evidence of embrittlement, cracking, blistering or other blemishes not originally present 4 Safety requirements 4.1 General Conveyor belts within each category (1, 2A, 2B, 3A, 3B, 4A, 4B, 5A, 5B and 5C) sha
41、ll meet the test requirements as indicated in Table 1 and in the specific subclauses below. 4.2 Electrical conductivity 4.2.1 When tested in accordance with EN ISO 284, all general purpose conveyor belts shall have an electrical surface resistance not greater than 300 M. 4.2.2 Light conveyor belts a
42、s described in EN ISO 21183-1 shall have an electrical surface resistance not greater than 300 M when tested in accordance with EN ISO 21178 unless the conditions described in 4.2.3 are met. 4.2.3 Light conveyor belts with an internal conductive layer shall not generate an electrostatic charge resul
43、ting in a surface potential of more than 1 000 V when tested in accordance with EN ISO 21179. NOTE Under special service conditions, whereby higher electrostatic charges resulting in surface potentials of more than 1000 V can be generated due to friction between belt surface and conveyed goods, or d
44、ue to friction within the conveyed goods like non-conductive bulk goods such as sugar, flour or plastic granules. The requirements for safety in this standard do not consider such critical service conditions, but only the run of the empty light conveyor belt and the electrostatic charges generated t
45、hereby. In certain circumstances (e.g. in the transportation of electronic components), the dissipation of electrical charges through the belt may be required. This requirement can be specified in terms of volume resistance as measured by the method described in EN ISO 21178. However, the requiremen
46、ts for safety in this standard do not consider the volume resistance of light conveyor belts for the allocation to the different safety categories. 4.3 Flame retardation 4.3.1 Conveyor belts in category 2A, or 3A, (see Clause 5 and Table 1), when tested in accordance with EN ISO 340 with covers inta
47、ct, shall have an aggregate of the times for duration of afterflame for all six tests of less than 45 s and no individual result shall be greater than 15 s. DIN EN 12882:2015-11 EN 12882:2015 (E) 7 4.3.2 Conveyor belts in category 2B, 3B, 4A, 4B, 5A, 5B and 5C (see Clause 5 and Table 1), when tested
48、 in accordance with EN ISO 340 with covers intact and also with covers removed, shall have an aggregate of the times for duration of afterflame for each group of six tests, (i.e. six tests with covers intact and six tests with covers removed) of less than 45 s and no individual result shall be great
49、er than 15 s. 4.4 Fire simulation 4.4.1 Conveyor belts in categories 4A and 4B, 5A, 5B and 5C (see Clause 5 and Table 1), when tested in accordance with Method A, C or D of EN 12881-1:2014, shall retain a length of undamaged conveyor belt as indicated in Table 1. 4.4.2 The test methods in accordance with EN 12881-1 are not applicable for light conveyor belts as described in EN ISO 21183-1. Therefore light conveyor belts can only be assigned to the categories 1, 2A and
