Common Market for Eastern and Southern Africa ≠ EDICT OF GOVERNMENT ± In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. COMESA 304 (2007) (English): Specifications for gloves and mitts of insulating material for live working COMESA HARMONISED COMESA/FDHS STANDARD 304:2007 Specifications for gloves and mitts of insulating material for live working REFERENCE: FDHS 304:2007 Foreword The Common Market for Eastern and Southern Africa (COMESA) was established in 1994 as a regional economic grouping consisting of 20 member states after signing the co-operation Treaty. In Chapter 15 of the COMESA Treaty, Member States agreed to co-operate on matters of standardisation and Quality assurance with the aim of facilitating the faster movement of goods and services within the region so as to enhance expansion of intra-COMESA trade and industrial expansion. Co-operation in standardisation is expected to result into having uniformly harmonised standards. Harmonisation of standards within the region is expected to reduce Technical Barriers to Trade that are normally encountered when goods and services are exchanged between COMESA Member States due to differences in technical requirements. Harmonized COMESA Standards are also expected to result into benefits such as greater industrial productivity and competitiveness, increased agricultural production and food security, a more rational exploitation of natural resources among others. COMESA Standards are developed by the COMESA experts on standards representing the National Standards Bodies and other stakeholders within the region in accordance with international procedures and practices. Standards are approved by circulating Final Draft Harmonized Standards (FDHS) to all member states for a one Month vote. The assumption is that all contentious issues would have been resolved during the previous stages or that an international or regional standard being adopted has been subjected through a development process consistent with accepted international practice. COMESA Standards are subject to review, to keep pace with technological advances. Users of the COMESA Harmonized Standards are therefore expected to ensure that they always have the latest version of the standards they are implementing. This COMESA standard is technically identical to IEC 60903:2003, Specifications for gloves and mitts of insulating material for live working A COMESA Harmonized Standard does not purport to include all necessary provisions of a contract. Users are responsible for its correct application. INTERNATIONAL IEC STANDARD 60903 Second edition 2002-08 Live working – Gloves of insulating material This English-language version is derived from the original bilingual publication by leaving out all French-language pages. Missing page numbers correspond to the French- language pages. Reference number IEC 60903:2002(E) Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1. Consolidated editions The IEC is now publishing consolidated versions of its publications. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2. Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects current technology. Information relating to this publication, including its validity, is available in the IEC Catalogue of publications (see below) in addition to new editions, amendments and corrigenda. Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication, as well as the list of publications issued, is also available from the following: • IEC Web Site (www.iec.ch) • Catalogue of IEC publications The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to search by a variety of criteria including text searches, technical committees and date of publication. On-line information is also available on recently issued publications, withdrawn and replaced publications, as well as corrigenda. • IEC Just Published This summary of recently issued publications (www.iec.ch/online_news/ justpub) is also available by email. Please contact the Customer Service Centre (see below) for further information. • Customer Service Centre If you have any questions regarding this publication or need further assistance, please contact the Customer Service Centre: Email: [email protected] Tel: +41 22 919 02 11 Fax: +41 22 919 03 00 INTERNATIONAL IEC STANDARD 60903 Second edition 2002-08 Live working – Gloves of insulating material  IEC 2002 Copyright - all rights reserved 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, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: [email protected] Web: www.iec.ch XB Commission Electrotechnique Internationale PRICE CODE International Electrotechnical Commission МеждународнаяЭлектротехническаяКомиссия For price, see current catalogue 60903 © IEC:2002 – 3 – CONTENTS FOREWORD.......................................................................................................................... 9 INTRODUCTION...................................................................................................................13 1 Scope.............................................................................................................................15 2 Normative references......................................................................................................15 3 Definitions ......................................................................................................................17 4 Classification..................................................................................................................21 5 General requirements.....................................................................................................23 5.1 Physical requirements ...........................................................................................23 5.1.1 Composition...............................................................................................23 5.1.2 Shape........................................................................................................23 5.1.3 Dimensions................................................................................................23 5.1.4 Thickness..................................................................................................25 5.1.5 Workmanship and finish.............................................................................27 5.2 Mechanical requirements.......................................................................................27 5.2.1 Tensile strength and elongation at break ...................................................27 5.2.2 Tension set................................................................................................27 5.3 Electrical requirements..........................................................................................27 5.4 Ageing requirements..............................................................................................29 5.5 Thermal requirements............................................................................................29 5.5.1 Low temperature resistance.......................................................................29 5.5.2 Flame retardancy.......................................................................................31 5.6 Gloves with special properties...............................................................................31 5.6.1 Acid resistance..........................................................................................31 5.6.2 Oil resistance.............................................................................................31 5.6.3 Ozone resistance.......................................................................................31 5.6.4 Acid, oil and ozone resistance ...................................................................31 5.6.5 Extremely low temperature resistance........................................................31 5.7 Marking.................................................................................................................33 5.8 Packaging..............................................................................................................35 6 Specific mechanical requirements...................................................................................35 6.1 Insulating gloves – Resistance to mechanical puncture..........................................35 6.2 Composite gloves..................................................................................................35 6.2.1 Resistance to mechanical puncture............................................................35 6.2.2 Abrasion resistance...................................................................................35 6.2.3 Cutting resistance......................................................................................35 6.2.4 Tear resistance..........................................................................................35 7 Electrical requirements for long composite gloves...........................................................35 8 General testing...............................................................................................................37 8.1 General.................................................................................................................37 8.2 Visual inspection and measurements.....................................................................37 8.2.1 Shape........................................................................................................37 8.2.2 Dimensions................................................................................................37 8.2.3 Thickness..................................................................................................39 8.2.4 Workmanship and finish.............................................................................39 60903 © IEC:2002 – 5 – 8.3 Mechanical tests....................................................................................................39 8.3.1 Tensile strength and elongation at break ...................................................39 8.3.2 Resistance to mechanical puncture............................................................41 8.3.3 Tension set................................................................................................41 8.4 Dielectric tests.......................................................................................................43 8.4.1 General......................................................................................................43 8.4.2 AC test procedure......................................................................................45 8.4.3 DC test procedure......................................................................................47 8.5 Ageing test............................................................................................................49 8.6 Thermal tests.........................................................................................................49 8.6.1 Low temperature test.................................................................................49 8.6.2 Flame retardancy test................................................................................49 8.7 Tests on gloves with special properties..................................................................51 8.7.1 Category A – Acid resistance.....................................................................51 8.7.2 Category H – Oil resistance.......................................................................51 8.7.3 Category Z – Ozone resistance..................................................................53 8.7.4 Category C – Extremely low temperature resistance..................................53 8.8 Marking.................................................................................................................53 8.9 Packaging..............................................................................................................53 9 Specific mechanical testing.............................................................................................53 9.1 Abrasion resistance...............................................................................................53 9.2 Cutting resistance..................................................................................................55 9.2.1 Test on reference test piece.......................................................................57 9.2.2 Test on glove test piece.............................................................................57 9.3 Tear resistance......................................................................................................59 10 Leakage current test.......................................................................................................61 10.1 General test conditions..........................................................................................61 10.2 Test arrangement..................................................................................................61 10.3 Test procedure......................................................................................................63 11 Quality assurance plan and acceptance tests .................................................................63 11.1 General.................................................................................................................63 11.2 Categories of tests.................................................................................................63 11.3 Sampling procedure...............................................................................................63 11.4 Acceptance tests...................................................................................................63 Annex A (normative) List and classification of tests..............................................................95 Annex B (normative) Liquid for tests on gloves of category H – Oil resistance....................101 Annex C (normative) Sampling procedure..........................................................................103 Annex D (informative) Guidelines for the selection of the class of glove in relation to nominal voltage of a system............................................................................107 Annex E (informative) In-service recommendations............................................................109 Annex F (informative) Typical glove dimensions.................................................................113 Annex G (informative) Cotton canvas additional characteristics..........................................115 Annex H (informative) Acceptance tests.............................................................................119 Annex I (informative) Electrical limits for the use of gloves of insulating material................121 Bibliography........................................................................................................................125 60903 © IEC:2002 – 7 – Figure 1 – Examples of typical shapes of gloves...................................................................65 Figure 2 – Shape of mitts......................................................................................................67 Figure 3 – Contour of glove (see 8.2.2).................................................................................69 Figure 4 – Example of area usually in contact with energized equipment...............................71 Figure 5 – Marking symbols (see 5.7)....................................................................................73 Figure 6 – Dumb-bell test piece for mechanical tests (see 8.3.1 and 8.3.3)...........................75 Figure 7 – Test plates and needle for resistance to mechanical puncture (see 8.3.2)...........77 Figure 8 – Distance D from open part of glove to water line (see 8.4.1.1)..............................79 Figure 9 – Bend (fold) line for low and extremely low temperature test (see 8.6.1 and 8.7.4).............................................................................................................81 Figure 10 – Polyethylene plates for low and extremely low temperature test (see 8.6.1 and 8.7.4).............................................................................................................83 Figure 11 – Set-up for the flame retardancy test (see 8.6.2)..................................................85 Figure 12 – Abrasion resistance tester (see 9.1)...................................................................87 Figure 13 – Apparatus for testing cutting resistance (see 9.2)...............................................89 Figure 14 – Test piece direction and location for tear resistance (see 9.3)...........................91 Figure 15 – Shape of test piece for tear resistance (see 9.3).................................................91 Figure 16 – Set-up for the leakage current test (see 10.2).....................................................93 Table 1 – Special properties..................................................................................................23 Table 2 – Standard lengths of gloves....................................................................................25 Table 3 – Maximum thickness of the gloves ..........................................................................25 Table 4 – Proof test and withstand test .................................................................................29 Table 5 – Surface leakage current test for long composite gloves .........................................37 Table 6 – Clearance from open part of the glove to water line...............................................45 Table 7 – Presentation of test results on glove test piece......................................................59 Table A.1 – General test procedure.......................................................................................95 Table B.1 – Characteristics of oil no. 1................................................................................101 Table C.1 – Classification of defects...................................................................................103 Table C.2 – Sampling plan for minor defects.......................................................................105 Table C.3 – Sampling plan for major defects.......................................................................105 Table D.1 – Designation of maximum use voltage...............................................................107 Table E.1 – Distances between the cuff of the protector glove and the top of the cuff of the insulating glove.............................................................................109 Table F.1 – Details and dimensions (see Figures 1 and 2) ..................................................113 Table G.1 – Identification sheet...........................................................................................117 Table I.1 – Electrical limits..................................................................................................123