www bzfxw com BRITISH STANDARD BS EN 50144 2 8 1996 Safety of hand held electric motor operated tools — Part 2 8 Particular requirements for sheet metal shears and nibblers The European Standard EN 50[.]
Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:33:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BRITISH STANDARD Safety of hand-held electric motor operated tools — Part 2-8: Particular requirements for sheet metal shears and nibblers The European Standard EN 50144-2-8:1996 has the status of a British Standard ICS 25.120.10; 25.140.20 BS EN 50144-2-8:1996 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:33:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 50144-2-8:1996 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee CPL/61, Safety of electrical appliances, to Subcommittee CPL/61/6, Portable motor-operated tools, upon which the following bodies were represented: Agricultural Engineers Association Association of Control Manufacturers (TACMA (BEAMA Ltd.)) Association of Manufacturers Allied to the Electrical and Electronic Industry (BEAMA Ltd.) Association of Manufacturers of Domestic Electrical Appliances Consumer Policy Committee of BSI Consumers’ Association Department of Trade and Industry (Consumer Safety Unit, CA Division) Electricity Association Health and Safety Executive Hire Association Europe Institution of Incorporated Executive Engineers Portable Electric Tool Manufacturers’ Association Rotating Electrical Machines Association (BEAMA Ltd.) Co-opted members This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 October 1996 © BSI 11-1998 The following BSI references relate to the work on this standard: Committee reference CPL/61/6 Draft for comment 92/05035 DC ISBN 580 26212 X Amendments issued since publication Amd No Date Comments Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:33:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 50144-2-8:1996 Contents Committees responsible National foreword Foreword Text of EN 50144-2-8 © BSI 11-1998 Page Inside front cover ii i Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:33:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 50144-2-8:1996 National foreword This British Standard has been prepared by Subcommittee CPL/61/6 and is the English language version of EN 50144-2-8:1996 Safety of hand-held electric motor operated tools Part 2-8: Particular requirements for sheet metal shears and nibblers, published by the European Committee for Electrotechnical Standardization (CENELEC) It is to be read in conjunction with BS EN 50144-1:1996 General requirements, which it supplements or modifies The many references to Part should be read as references to BS EN 50144-1:1996, which is the English language version of EN 50144-1:1995 The foreword of EN 50144-2-8 makes reference to the “date of withdrawal”, dow, of the relevant national standard In this case the relevant national standard is BS 2769-2.8:1984 which will be withdrawn on December 1996 in accordance with the CENELEC Internal Regulations Reference is also made to the application of CENELEC Memorandum No with regard to certification Attention is drawn to Note to Memorandum No which states: “The use of the certificate or mark licence in the running production may not go on for more than 60 months after dow This should allow necessary changes in the production line and to use up supplies Within the established period after dow the certificates and mark licences will have to be reconsidered and cancelled or reissued” For tools intended to be used in locations where special conditions prevail, as in ships and vehicles, and in hazardous locations, for example, where explosions are liable to occur, requirements additional to those specified in the standard may be necessary This standard calls for test procedures that may be injurious to safety or health if adequate precautions are not taken when conducting tests Product certification Attention is drawn to the fact that products conforming to this British Standard may be approved by BSI Product Certification, and that such certification may be used for the purposes of participation in the CENELEC Certification Agreement (Details of the BSI certification marks are given on the inside back cover.) A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application Compliance with a British Standard does not of itself confer immunity from legal obligations Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages to 6, an inside back cover and a back cover This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover ii © BSI 11-1998 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:33:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 50144-2-8 NORME EUROPÉENNE EUROPÄISCHE NORM February 1996 ICS 25.140.20; 25.120.10 Supersedes HD 400.3H S1:1981 Descriptors: Hand-held electric motor operated tools, sheet metal shears, safety requirements, protection against electric shocks, fire protection; protection against mechanical hazards English version Safety of hand-held electric motor operated tools Part 2-8: Particular requirements for sheet metal shears and nibblers Sécurité des outils électroportatifs moteur Partie 2-8: Règles particulières pour les cisailles métaux et les grignoteuses Sicherheit von handgeführten motorbetriebenen Elektrowerkzeugen Teil 2-8: Besondere Anforderungen für Blechscheren und Knabberscheren ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ This European Standard was approved by CENELEC on 1994-10-04 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom 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 © 1996 Copyright reserved to CENELEC members Ref No EN 50144-2-8:1996 E Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:33:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 50144-2-8:1996 Contents Foreword This European Standard has been prepared by the Technical Committee 61F, Hand-held and transportable electric motor operated tools The text of the draft was submitted to the Unique Acceptance Procedure (UAP) in December 1993 and was approved by CENELEC as EN 50144-2-8 on 1994-10-04 A draft for an amendment was submitted to the Unique Acceptance Procedure in April 1994 and was approved by CENELEC on 1994-10-04 for inclusion into the European Standard This European Standard replaces HD 400.3H S1:1981 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) 1996-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 1996-12-01 As far as certification is concerned, CENELEC Memorandum applies This standard is divided into two Parts: Part 1: General Requirements, comprising clauses of a general character Part 2: Particular Requirements, dealing with particular types of appliance The clauses of these particular requirements supplement or modify the corresponding clauses in Part Where the text of Part indicates an “addition” to, a “modification” or “replacement” of the relevant requirement, test specification or explanation of Part 1, these changes are made to the relevant text of Part 1, which then becomes part of the standard Where no change is necessary, the words “This clause of Part is applicable” are used in Part NOTE Foreword Scope Definitions General requirements General conditions for the tests Rating Classification Marking Protection against electric shock Starting 10 Input and current 11 Heating 12 Leakage current 13 Environmental requirements 14 Moisture resistance 15 Insulation resistance and electric strength 16 Endurance 17 Abnormal operation 18 Mechanical hazards 19 Mechanical strength 20 Construction 21 Components 22 Internal wiring 23 Supply connection and external flexible cables and cords 24 Terminals for external conductors 25 Provision for earthing 26 Screws and connections 27 Creepage distances, clearances and distances through insulation 28 Resistance to heat, fire and tracking 29 Resistance to rusting 30 Radiation Annexes Page 3 3 3 3 3 3 3 3 3 3 4 ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ 4 4 4 4 In this standard the following print types are used: — Requrements proper: in roman type; — Test specification: in italic type; — Explanatory matter: in smaller type © BSI 11-1998 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:33:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 50144-2-8:1996 Scope 10 Input and current This clause of Part is applicable except as follows: 1.1 Addition: This standard applies to sheet metal shears and nibblers This clause of Part is applicable Definitions This clause of Part is applicable except as follows: 2.2 Replacement: 18 normal load the load obtained when the tool is operated continuously, the load being such that the input, in watts, is equal to rated input 11 Heating This clause of Part is applicable except as follows: 11.5 Modification: Tools for continuous operation are operated for 30 12 Leakage current This clause of Part is applicable 13 Environmental requirements This clause of Part is applicable except as follows: 4.10 Addition: For tests carried out under normal load, the shear or nibbler mechanism may be replaced by a rotating gear, so that the tool can be loaded by means of a brake This clause of Part is applicable except as follows: 13.2.3 Replacement of paragraphs 1, and 3: Sheet metal shears and nibblers are tested at no-load 13.2.4 Addition: The orientation of the tool to be as for cutting a horizontal sheet of metal 13.3.3 Replacement of paragraph 1: Measurements are made in the “Z” direction only 13.3.7 Replacement of paragraph 1: Sheet metal shears and nibblers are tested at no-load, the tool being held as in normal use Paragraph is not applicable Rating 14 Moisture resistance This clause of Part is applicable This clause of Part is applicable Classification 15 Insulation resistance and electric strength NOTE The normal load is based on the rated voltage or on the upper limit of the rated voltage range General requirements This clause of Part is applicable General conditions for the tests ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ This clause of Part is applicable Marking This clause of Part is applicable except as follows: 7.1 Addition: Shears and nibblers shall be marked with: — maximum thickness, in millimetres, of sheet metal which can be cut NOTE Unless otherwise indicated on the tool, the marking for maximum thickness of sheet metal which can be cut is related to steel having a tensile strength of 390 MPa (390 N/mm2) Protection against electric shock This clause of Part is applicable Starting This clause of Part is applicable © BSI 11-1998 This clause of Part is applicable 16 Endurance This clause of Part is applicable 17 Abnormal operation This clause of Part is applicable 18 Mechanical hazards This clause of Part is applicable 19 Mechanical strength This clause of Part is applicable 20 Construction This clause of Part is applicable Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:33:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 50144-2-8:1996 21 Components 26 Screws and connections This clause of Part is applicable This clause of Part is applicable 22 Internal wiring 27 Creepage distances, clearances and distances through insulation This clause of Part is applicable 23 Supply connection and external flexible cables and cords This clause of Part is applicable 28 Resistance to heat, fire and This clause of Part is applicable except as follows: tracking 23.2 Replacement of paragraph 1: Non-detachable flexible cables and cords shall not be lighter than ordinary polychloroprene sheathed flexible cables (code designation H07 RN-F) This clause of Part is applicable 24 Terminals for external conductors 30 Radiation This clause of Part is applicable This clause of Part is applicable 29 Resistance to rusting This clause of Part is applicable 25 Provision for earthing This clause of Part is applicable ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ © BSI 11-1998 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:33:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 50144-2-8:1996 Annexes The annexes of Part are applicable ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ © BSI 11-1998 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:33:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ blank Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:33:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 50144-2-8:1996 ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ BSI Certification marking The BSI Kitemark shown below may be used under licence on products which have been certified to this standard Information on the conditions under which a licence can be granted may be obtained from BSI Product Certification, Maylands Avenue, Hemel Hempstead, Hertfordshire HP2 4SQ © BSI 11-1998 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:33:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 50144-2-8:1996 BSI — British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: 0181 996 9000 Fax: 0181 996 7400 BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive 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