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1、BRITISH STANDARD BS 2769-2.16: 1992 Hand-held electric motor-operated tools Part 2: Particular requirements Section 2.16 Specification for trimmers (Implementation of CENELEC HD 400.3 Section R S1) IMPORTANT NOTE. Before reading this Section it is essential to read BS 2769-2.0 General introduction a
2、nd list of Sections published separately. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 08:59:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2769-2.16:1992 This British Standard, having been prepared under the direction of the Light Electrical Engineering St
3、andards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 August 1992 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference LEL/161 Draft for comment 91/23387 DC ISBN 0 580 20983 0 Committees responsible
4、 for this British Standard The preparation of this British Standard was entrusted by the Light Electrical Engineering Standards Policy Committee (LEL/-) to Technical Committee LEL/161, upon which the following bodies were represented: Association of Consulting Scientists Association of Control Manuf
5、acturers TACMA (BEAMA Ltd.) Association of Manufacturers of Domestic Electrical Appliances British Cable Makers Confederation British Electrotechnical Approvals Board British Gas plc British Lawn Mower Manufacturers Federation British Pest Control Association British Retail Consortium Catering Equip
6、ment Manufacturers Association Consumer Policy Committee of BSI Consumers Association Department of Trade and Industry (Consumer Safety Unit, CA Division) Electrical Installation Equipment Manufacturers Association (BEAMA Ltd.) Electricity Association Health and Safety Executive Institute of Trading
7、 Standards Administration Institution of Electrical Engineers Loss Prevention Council Portable Electric Tool Manufacturers Association Rotating Electrical Machines Association (BEAMA Ltd.) Royal Society for the Prevention of Accidents Small Electrical Appliances Marketing Association The following b
8、odies were also represented in the drafting of the standard, through subcommittees and panels: Association of Manufacturers Allied to the Electrical and Electronic Industry (BEAMA Ltd.) Hire Association Europe Institution of Incorporated Executive Engineers Radio Electrical and Television Retailers
9、Association Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 08:59:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2769-2.16:1992 BSI 11-1999i Contents Page Committees responsibleInside front cover Nationa
10、l forewordii Foreword2 1Scope3 2Definitions3 3General requirements4 4General conditions for the tests4 5Rating4 6Classification4 7Marking4 8Protection against electric shock4 9Starting4 10Input and current4 11Heating4 12Leakage current4 13Radio interference suppression4 14Moisture resistance4 15Insu
11、lation resistance and electric strength5 16Endurance5 17Abnormal operation5 18Mechanical hazards5 19Mechanical strength5 20Construction5 21Components5 22Internal wiring5 23Supply connection and external flexible cables and cords5 24Terminals for external conductors5 25Provision for earthing5 26Screw
12、s and connections5 27Creepage distances, clearances and distances through insulation5 28Resistance to heat, fire and tracking5 29Resistance to rusting5 Annex A Thermal cut-outs and overload releases6 Annex B Routine tests6 Figure 16.1 Trimmer3 Figure 16.2 Trimmer with fixed base plate3 Figure 16.3 T
13、rimmer with tilt base plate4 Figure 16.4 Trimmer with off-set base plate4 List of referencesInside back cover Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 08:59:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2769-2.16:1992 ii BSI 11-1999 National foreword T
14、his British Standard has been prepared under the direction of the Light Electrical Engineering Standards Policy Committee. This Section of BS 2769 implements HD 400.3 Section R S1 of the European Committee for Electrotechnical Standardization (CENELEC). Product certification. Attention is drawn to t
15、he fact that products conforming to this British Standard may be approved by BSI Quality Assurance, and that such certification may be used for the purpose of participation in the CENELEC Certification Agreement. (Details of the BSI certification marks are given on the inside back cover.) Licensed C
16、opy: London South Bank University, London South Bank University, Tue Dec 12 08:59:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI HARMONIZATION DOCUMENT DOCUMENT DHARMONISATION HARMONISIERUNGSDOKUMENT HD 400.3R S1 January 1992 UDC 621.914.3-83 Descriptors: Hand-held motor operated tools, trimmers, saf
17、ety requirement, protection against electric shock English version Hand-held motor operated tools Part 3: Particular specifications Section R: Trimmers Outils portatifs main moteur Troisime partie: Rgles particulires Section R: Affleureuses Handgefhrte Elektrowerkzeuge Teil 3: Besondere Bestimmungen
18、 Hauptabschnitt R: Kantenfrse This Harmonization Document was approved by CENELEC on 1991-12-10. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this Harmonization Document on a national level. Up-to-date lists and bi
19、bliographical references concerning national implementation may be obtained on application to the Central Secretariat or to any CENELEC member. This Harmonization Document exists in three official versions (English, French, German). CENELEC members are the national electrotechnical committees of Aus
20、tria, 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 Comit Europen de Normalisation Electrotechnique Europisches Kom
21、itee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1992 Copyright reserved to CENELEC members Ref. No. HD 400.3R S1:1992 E Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 08:59:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
22、 BS 2769-2.16:1992 BSI 11-1999 2 Foreword This Harmonization Document was prepared by the CENELEC Technical Committee TC 61F and submitted to the CENELEC members for Unique Acceptance in February 1991 following a decision taken at the CLC/TC 61F meeting held in Brussels in April 1990. The text of th
23、e Harmonization Document was approved by CENELEC as HD 400.3R S1 on 10 December 1991. This Harmonization Document (Section R of HD 400.3) has to be used together with HD 400.1 Hand-held motor-operated tools Part 1: General specifications. The clauses of this Section supplement or modify the correspo
24、nding clauses in Part 1. Where there is no corresponding clause or subclause in this Section the clause or subclause of Part 1 applies without modification as far as is reasonable. Where the text of this Section states “addition”, “modification” or “replacement”, the relevant requirement, text speci
25、fication or explanation of Part 1 should be adapted accordingly. The following dates were fixed: For products which have complied with the relevant national standard before 1992-12-01, as shown by the manufacturer or by a certification body, this previous standard may continue to apply for productio
26、n until 1997-12-01. latest date of announcement of the HD at national level(doa) 1992-06-01 latest date of publication of a harmonized national standard(dop) 1992-12-01 latest date of withdrawal of conflicting national standards(dow)1992-12-01 Licensed Copy: London South Bank University, London Sout
27、h Bank University, Tue Dec 12 08:59:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2769-2.16:1992 BSI 11-19993 1 Scope This Section of BS 2769, together with the requirements of BS 2769-1:1984 to which reference is made, specifies requirements, including safety requirements, for hand-held electric
28、 motor-operated trimmers. NOTEThe titles of the publications referred to in this standard are given on the inside back cover. Addition 1.1 NOTEThis Section of BS 2769 does not cover trimmers designed to be used in conjuction with a support or in any other way, such as stationary or transportable mac
29、hines. 2 Definitions The definitions given in BS 2769-1:1984 apply subject to the following modification to 2.20 and the additions of 2.33 to 2.36. Modification 2.20 normal load the load obtained when the tool is operated intermittently, each cycle comprising a period of continuous operation of 1 mi
30、n and a rest period of 1 min with the tool switched off. The load applied during the period of continuous operation is such that the input, in watts, is equal to rated input NOTE 1The introduction of a definition based on a formula is under consideration. NOTE 2Care is to be taken that, if eddy-curr
31、ent brakes are used for applying the load, their starting characteristic is not detrimental to the unit under test. Additions 2.33 trimmer a tool designed to be fitted with a suitable rotary cutter and an appropriate base, for trimming and finishing the edge of plastic laminate sheet, wood veneer, e
32、tc., including when they are fixed to a substrate, as shown in Figure 16.1 NOTETrimmers are gripped by only one hand around their body and do not generally have additional handles or gripping areas. They are equipped with one or more of the base plates defined in 2.34 to 2.36. 2.34 fixed base plate
33、a height-adjustable base plate provided with a roller to guide the tool relative to the work piece NOTEThe fixed base plate can be equipped with an attachment for trimming to size two laminate sheets to be butted together, as shown in Figure 16.2. 2.35 tilt base plate a height-adjustable base plate
34、provided with pivots to cut at an angle, as shown in Figure 16.3 2.36 off-set base plate a base plate with a height-adjustable cutter used where the trimmer spindle is off-set from the motor to enable it to get into awkward spaces, as shown in Figure 16.4 Figure 16.1 Trimmer Figure 16.2 Trimmer with
35、 fixed base plate Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 08:59:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2769-2.16:1992 4 BSI 11-1999 3 General requirements Clause 3 of BS 2769-1:1984 shall apply. 4 General conditions for the tests Clause 4 of BS
36、 2769-1:1984 shall apply. 5 Rating Clause 5 of BS 2769-1:1984 shall apply. 6 Classification Clause 6 of BS 2769-1:1984 shall apply. 7 Marking Clause 7 of BS 2769-1:1984 shall apply subject to the following modification to 7.1 and addition to 7.13. Modification 7.1 k) the maximum speed(s) in revoluti
37、ons per minute. Addition 7.13 The instruction sheet shall give details of the type of cutters for which the tool is designed and shall draw attention to the need to use bits of the correct shank diameter and suitable for the speed of the tool. The instruction sheet shall also give information concer
38、ning the diameter of shank(s) for which the collet(s) are designed. 8 Protection against electric shock Clause 8 of BS 2769-1:1984 shall apply. 9 Starting Clause 9 of BS 2769-1:1984 shall apply. 10 Input and current Clause 10 of BS 2769-1:1984 shall apply subject to the following modification to 10.
39、1. Modification 10.1 This test shall not be made. 11 Heating Clause 11 of BS 2769-1:1984 shall apply subject to the following modification to paragraph 8 including items a), b) and c) of 11.1. Modification 11.1 (paragraph 8) TEST. The tool shall be operated under normal load for 30 cycles. The tempe
40、rature rises shall be measured at the end of the period of continuous operation. 12 Leakage current Clause 12 of BS 2769-1:1984 shall apply. 13 Radio interference suppression Clause 13 of BS 2769-1:1984 shall apply. 14 Moisture resistance Clause 14 of BS 2769-1:1984 shall apply. Figure 16.3 Trimmer
41、with tilt base plate Figure 16.4 Trimmer with off-set base plate Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 08:59:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2769-2.16:1992 BSI 11-19995 15 Insulation resistance and electric strength Clause 15 of BS 276
42、9-1:1984 shall apply. 16 Endurance Clause 16 of BS 2769-1:1984 shall apply. 17 Abnormal operation Clause 17 of BS 2769-1:1984 shall apply. 18 Mechanical hazards Clause 18 of BS 2769-1:1984 shall apply subject to the following additions of 18.2 to 18.5. Additions 18.2 The motor housing shall be consi
43、dered as the only gripping area and shall be so shaped as to minimize the risk of inadvertent contact of the hand of the user with rotating parts. NOTEInadvertent contact of the hand of the user with rotating parts is considered to be sufficiently prevented when the main switch area is at least 120
44、mm from the cutter, taking into account any base which may be fitted. TEST. Conformance shall be checked by inspection and measurement. 18.3 Base plates shall be so designed as to prevent the hand holding the trimmer making inadvertent contact with the cutter during use. TEST. Conformance shall be c
45、hecked by inspection. 18.4 Elements intended to be readjusted while the trimmer is in operation shall be located in such a way that touching the cutter is avoided. TEST. Conformance shall be checked by inspection. 18.5 The maximum speed of the spindle at rated voltage or at the upper limit of the vo
46、ltage range shall not exceed the speed marked on the nameplate of the tool. TEST. Conformance shall be checked by measuring the speed of the spindle after the tool has been operating for 15 min with no load. 19 Mechanical strength Clause 19 of BS 2769-1:1984 shall apply. 20 Construction Clause 20 of
47、 BS 2769-1:1984 shall apply. 21 Components Clause 21 of BS 2769-1:1984 shall apply. 22 Internal wiring Clause 22 of BS 2769-1:1984 shall apply. 23 Supply connection and external flexible cables and cords Clause 23 of BS 2769-1:1984 shall apply. 24 Terminals for external conductors Clause 24 of BS 27
48、69-1:1984 shall apply. 25 Provision for earthing Clause 25 of BS 2769-1:1984 shall apply. 26 Screws and connections Clause 26 of BS 2769-1:1984 shall apply. 27 Creepage distances, clearances and distances through insulation Clause 27 of BS 2769-1:1984 shall apply. 28 Resistance to heat, fire and tra
49、cking Clause 28 of BS 2769-1:1984 shall apply. 29 Resistance to rusting Clause 29 of BS 2769-1:1984 shall apply. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 08:59:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2769-2.16:1992 6 BSI 11-1999 Annex A Thermal cut-outs and overload releases Appendix A of BS 2769-1:1984 shall apply. Annex B Routine tests Appendix B of BS 2769-1:1984 shall apply. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 08:59:2