1、BSI Standards Publication Sharp edge testing apparatus and test procedure for lighting equipment Tests for sharpness of edge PD IEC/TR 62854:2014National foreword This Published Document is the UK implementation of IEC/TR 62854:2014. The UK participation in its preparation was entrusted by Technical
2、 Committee CPL/34, Lamps and Related Equipment, to Subcommittee CPL/34/4, Luminaires. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for
3、its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 81766 3 ICS 29.140.40 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the Standards P
4、olicy and Strategy Committee on 28 February 2014. Amendments/corrigenda issued since publication Date Text affected PUBLISHED DOCUMENT PD IEC/TR 62854:2014 IEC TR 62854 Edition 1.0 2014-02 TECHNICAL REPORT RAPPORT TECHNIQUE Sharp edge testing apparatus and test procedure for lighting equipment Tests
5、 for sharpness of edge Appareil et mode opratoire pour la vrification des bords vifs des appareils dclairage Essais de tranchant des bords INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE L ICS 29.140.40 PRICE CODE CODE PRIX ISBN 978-2-8322-1418-3 Registered trade
6、mark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. P
7、D IEC/TR 62854:2014 2 TR 62854 IEC:2014 CONTENTS FOREWORD . 3 1 Scope 5 2 Test equipment 5 3 Calibration . 5 4 The preparation of the test head 6 5 The test procedure 6 6 Criteria 6 Figure 1 Sharp edge tester 8 Figure 2 Sharp edge tester with tape cap (alternate construction) 9 Figure 3 Typical cali
8、bration procedure . 9 Figure 4 Test Head Preparation . 10 Figure 5 Test Procedure 10 Figure 6 Edges Tested . 10 Table 1 Average values of tape dimensions and properties 7 PD IEC/TR 62854:2014TR 62854 IEC:2014 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SHARP EDGE TESTING APPARATUS AND TEST PROCEDU
9、RE FOR LIGHTING EQUIPMENT TESTS FOR SHARPNESS OF EDGE 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-operat
10、ion 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 “
11、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 prepa
12、ration. 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 conse
13、nsus 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 a
14、re 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 t
15、ransparently 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 itself does not provide any attestation of conformity. Independe
16、nt certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liabi
17、lity 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 (inclu
18、ding 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
19、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. The main task of IEC technical committees is to prepare International Sta
20、ndards. However, a technical committee may propose the publication of a technical report when it has collected data of a different kind from that which is normally published as an International Standard, for example “state of the art“. IEC/TR 62854, which is a technical report, has been prepared by
21、subcommittee 34D: Luminaires, of IEC technical committee 34: Lamps and related equipment. The text of this technical report is based on the following documents: Enquiry draft Report on voting 34D/1088/DTR 34D/1101A/RVC Full information on the voting for the approval of this technical report can be f
22、ound in the report on voting indicated in the above table. PD IEC/TR 62854:2014 4 TR 62854 IEC:2014 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability date indi
23、cated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. PD IEC/TR 62854:2014TR 62854 IEC:2014 5 SHARP EDGE TESTING APPARATUS AND TEST PROCEDURE FO
24、R LIGHTING EQUIPMENT TESTS FOR SHARPNESS OF EDGE 1 Scope This technical report details a test procedure and test equipment that may be used to assist the assessment of the risk of hazardous sharp edges that may be exposed to the user or installer of lighting equipment. 2 Test equipment Sharp-edge te
25、ster The instrument consists essentially of a handle with a pivoted arm attached. A constant-tension spring secured to the handle is used to apply a steady force to the arm. The arm head is a piece of cylindrical steel, with an outside diameter of 12,7 mm and a length of 19 mm, located at the end of
26、 the adjustable arm. The arm head is to be wrapped with three layers of tape, the two outer layers act as sensing tapes; the inner layer acts as an indicating tape. Alternatively, the tapes are to be applied to a maximum 15,9 mm diameter removable sleeve (cap) that is placed onto the 12,7 mm steel h
27、ead. See Figure 1 or 2. Indicating tape (inner layer) 19,1 mm wide, adhesive backed, single-adhesive coated, vinyl foam tape, black in colour, having the tape properties given in Table 1. Sensing tape no. 2 (middle layer) 19,1 mm wide, double-adhesive coated, vinyl foam tape, white in colour, having
28、 the tape properties given in Table 1. Sensing tape no. 1 (outer layer) 19,1 mm wide, single-adhesive coated skived tetra- fluorethylene tape natural colour, having the tape properties given in Table 1. The skived tetrafluorethylene backing (film) is shaved in a thin layer from a cylindrical block o
29、f material. Calibration equipment A weight (mass) that can exert 6,672 0,133 N and a length of string. 3 Calibration The sharp edge tester shall be calibrated so that 6,7 0,133 N force is present at the centre of the head when the arm is between stops. The length of the arm is to be adjustable for c
30、alibration purposes. For special evaluations, the force may be adjusted to a different value. See Figure 3 for a typical calibration procedure were, the length of the arm is to be adjustable for calibration purposes: The adjustment set screws that hold the pivoted arm in place in the main drum are t
31、o be loosened. With the handle securely held in a horizontal position, the calibration weight is to be attached to the centre of the head. The length of the arm within the main drum is to be adjusted so that the weighted arm remains in a horizontal position with the calibration weight attached. PD I
32、EC/TR 62854:2014 6 TR 62854 IEC:2014 The adjustment setscrew(s) are to be tightened to securely lock the pivot arm in place within the main drum. The calibration is to be rechecked and the weight removed. 4 The preparation of the test head The curved face of the tester head shall be covered with thr
33、ee layers of tape in the following order: a) First layer (inner layer) Indicating type, black vinyl foam tape as described in Table 1. b) Second layer (middle layer) Sensing tape no. 2, white vinyl foam tape as described in Table 1. c) Third layer (outer layer) Sensing tape no. 1, tetrafluorethylene
34、 tape as described in Table 1. Each tape is to be applied over approximately 180 of the circumference of the test head to prevent stretching of the tape. The tapes are not to be stretched when positioned on the head. See Figure 4. 5 The test procedure The centre of the tape-covered head of the sharp
35、-edge tester shall be positioned on the edge to be tested in the manner illustrated in Figures 5 and 6. The arm of the tester shall be between stops so that the tape-covered head exerts a 6,7 N force on the edge. The tester shall be immediately moved along the edge a distance of 50 mm and then back
36、to its starting position without removal of the tester from the edge. It shall then be withdrawn from the edge. The total distance of engagement between the edge and the tape-covered head is not to exceed 100 mm. The time of travel is not to take longer than 5 s nor less than 2 s. For an edge less t
37、han 50 mm long shall be tested for a distance of twice its length. (Example: For an edge 40 mm long, the tester is to be moved along its length and back to the starting position so that the total distance of engagement between the edge and tester is 80 mm.) 6 Criteria The application of the sharp-ed
38、ge tester to an accessible edge as described above shall not result in the cutting through of the two outer layers of the sensing tapes. The tape-covered head shall be examined to determine whether or not penetration has occurred through the two sensing layers. If penetration has occurred through th
39、e two sensing layers, the black indicating tape will be visible through the resulting cut. PD IEC/TR 62854:2014TR 62854 IEC:2014 7 Table 1 Average values of tape dimensions and properties Indicating tape aSensing tape no. 2 bSensing tape no. 1 cThickness (1,14 mm to 2,03 mm) (0,64 mm to 1,02 mm) tot
40、al with adhesive backing: 0,114 mm backing: 0,064 mm to 0,089 mm Density 256 kg/cubic meter 224 kg/cubic meter Tensile 758 kN/m 2379 kN/m 2110 kN/m 2Elongation, percent 370 275 Dielectric strength 7,9 kV/mm to 9,8 kV/mm 9 000 V Temperature resistance (continuous) 80 C 65 C 180 C Compression deflecti
41、on at 25 % 90 kN/m 2 Compression modules at 25 % 8,5 psi (59 kN/m 2 ) Compression set percent loss of original height 3 % 3,0 % a3M Company Type 4516 1or any other tape having the properties meets the requirements. b3M Company Type 4432 2or any other tape having the properties meets the requirements
42、.cSaint Gobain Company #2045-3 3or any other tape having the properties meets the requirements. 13M Company Type 4516 is the trademark of a product supplied by 3M Company. This information is given for the convenience of users of this document and does not constitute an endorsement by IEC of the pro
43、duct named. Equivalent products may be used if they can be shown to lead to the same results. 23M Company Type 4432 is the trademark of a product supplied by 3M Company. This information is given for the convenience of users of this document and does not constitute an endorsement by IEC of the produ
44、ct named. Equivalent products may be used if they can be shown to lead to the same results. 3Saint Gobain Company #2045-3 is the trademark of a product supplied by Saint Gobain Company. This information is given for the convenience of users of this document and does not constitute an endorsement by
45、IEC of the product named. Equivalent products may be used if they can be shown to lead to the same results. PD IEC/TR 62854:2014 8 TR 62854 IEC:2014 Key A Head, steel, 12,7 mm diameter, 19 mm long B Arm, steel, 6,4 mm diameter adjustable C Adjustment screw D Main drum, free to rotate on stud, sleeve
46、 bearing E Negator s-ring, 12,7 mm wide,165 mm long F Storage drum, free to rotate on stud, sleeve bearing G Adjustable wrench H Handle assembly I Stop Figure 1 Sharp edge tester IEC 0555/14 A B D C E F G I H PD IEC/TR 62854:2014TR 62854 IEC:2014 9 Key A Head, steel, 12,7 mm diameter, 19 mm long B T
47、ape cap, maximum 15,9 mm diameter removable sleeve Figure 2 Sharp edge tester with tape cap (alternate construction) Figure 3 Typical calibration procedure IEC 0556/14 A B IEC 0557/14 Normal position of arm Access holes for adjustment setscrew Handle Handle drum Calibration position of arm C L Head
48、Cord Weight PD IEC/TR 62854:2014 10 TR 62854 IEC:2014 Key A 12,7 mm diameter B 19 mm long Figure 4 Test Head Preparation Figure 5 Test Procedure Figure 6 Edges Tested IEC 0558/14 A Bottom layer of indicating tape Middle layer of sensing tape NO.2 Outer layer of sensing tape NO.1 B IEC 0559/14 Consta
49、nt force tape covered head 50,8 mm stroke IEC 0560/14 Sharp edge tester may be applied to edges A, B or C A B C PD IEC/TR 62854:2014This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services. BSI is incorporated by Royal Charter. British Standards and other standardization products a
