1、BSI Standards PublicationBS ISO 6742-4:2015Cycles Lighting and retro-reflective devicesPart 4: Lighting systems powered by thecycles movementBS ISO 6742-4:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 6742-4:2015.The UK participation in its preparation w
2、as entrusted to TechnicalCommittee GME/25, Cycles.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Sta
3、ndards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 78228 2ICS 43.150Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2015.Amendme
4、nts issued since publicationDate Text affectedBS ISO 6742-4:2015 ISO 2015Cycles Lighting and retro-reflective devices Part 4: Lighting systems powered by the cycles movementCycles Dispositifs dclairage et dispositifs rtrorflchissants Partie 4: Systmes dclairage aliments par dynamoINTERNATIONAL STAND
5、ARDISO6742-4First edition2015-05-15Reference numberISO 6742-4:2015(E)BS ISO 6742-4:2015ISO 6742-4:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or uti
6、lized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyrig
7、ht officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 6742-4:2015ISO 6742-4:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Lamps and interchangeable generators 24.1 General
8、. 24.2 Requirements . 24.2.1 Dynamo-operated front lights 24.2.2 Dynamo-operated rear lights 24.2.3 Dynamos . 34.3 Test Methods . 44.3.1 Dynamo-operated front lights 44.3.2 Dynamo-operated rear lights 44.3.3 Dynamos . 45 Lamps and dedicated generators 55.1 General . 55.2 Requirements . 55.2.1 Princi
9、ple of lighting system 55.2.2 Speed ranges . 55.3 Safety requirements . 55.3.1 Environmental behaviour 55.3.2 Test method 66 Common requirements and test methods for lighting systems and the loading . 66.1 Requirements . 66.1.1 Corrosion resistance . 66.1.2 Water resistance . 66.1.3 Loading requirem
10、ents . 66.2 Test methods . 66.2.1 Corrosion testing . 66.2.2 Water resistance . 66.2.3 Test of electronic load 67 Instructions 78 Marking 78.1 Requirement . 78.2 Durability test 78.2.1 Requirement 78.2.2 Test method 7Annex A (informative) Electronic load for power-measurement of 6 V/1,5 W LED dynamo
11、s 8Annex B (informative) Efficiency calculation .10Annex C (informative) Verification of the electronic load .11Bibliography .13 ISO 2015 All rights reserved iiiContents PageBS ISO 6742-4:2015ISO 6742-4:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation
12、 of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee.
13、International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those
14、 intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (se
15、e www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the docum
16、ent will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and e
17、xpressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword Supplementary information .The committee responsible for this document is ISO/TC 149, Cycles, SC 1, Cycles and majo
18、r sub-assemblies.ISO 6742 consists of the following parts, under the general title Cycles Lighting and retro-reflective devices: Part 1: Lighting and light signalling devices Part 2: Retro reflective devices Part 3: Installation and use of lighting and retro-reflective devices Part 4: Lighting syste
19、ms powered by the cycles movement Part 5: Lighting systems not powered by the cycles movementiv ISO 2015 All rights reservedBS ISO 6742-4:2015INTERNATIONAL STANDARD ISO 6742-4:2015(E)Cycles Lighting and retro-reflective devices Part 4: Lighting systems powered by the cycles movement1 ScopeThis part
20、of ISO 6742 is applicable to lighting systems used on cycles intended to be used on public roads and, especially, bicycles complying with ISO 4210 and ISO 8098.This part of ISO 6742 specifies requirements and test methods for the performance of lighting systems powered by the cycles movement. It app
21、lies to light devices complying with ISO 6742-1. Lighting systems include lighting devices and power supplied by cycles movement such as generator.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application
22、. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 6742-1:2015, Cycles Lighting and retro-reflective devices Part 1: Lighting and light signalling devicesISO 6742-3:2015, Cycles Lighting
23、 and retro-reflective devices Part 3: Installation and use of lighting and retro-reflective devicesISO 9227, Corrosion tests in artificial atmospheres Salt spray testsIEC 60529, Degrees of protection provided by enclosures (IP Code)3 Terms and definitionsFor the purposes of this document, the terms
24、and definitions given in ISO 6742-1 and the following apply.3.1frictional drive generatorgenerator for which the rotor or stator is linked to a pulley which press against the driving wheel over a swivel bearing through force3.2positive drive generatorgenerators which are not concerned by the definit
25、ion of frictional drive generator (3.1)3.3integrated lamp and power sourcesystem including power source and at least one type of light designed to be used together, closed systemNote 1 to entry: Power generator characteristics are depending of vehicle movement.Note 2 to entry: Light output performan
26、ces are depending of the speed of the vehicle, or the time during which bicycle has been stopped. ISO 2015 All rights reserved 1BS ISO 6742-4:2015ISO 6742-4:2015(E)4 Lamps and interchangeable generators4.1 GeneralThe complete system shall be designed as open system which requires compatibility betwe
27、en lamps and generators.4.2 Requirements4.2.1 Dynamo-operated front lightsDynamo-operated front lights (lamps emitting light to the front) shall correspond with the requirements of ISO 6742-1:2015, 4.2 (Front position lamp), 4.5 (Low beam) and 4.6 (High beam).Voltage limiting resources shall only be
28、come effective above the test voltage. Here, the value of the DC voltage, U, corresponds with the root mean square of the AC voltage, Ueff.Furthermore: the nominal voltage of the light source shall be equal to the system voltage or the light source shall be powered via an appropriate electronic ball
29、ast; the lighting effect shall be deployed at 3 Ueffat the latest; the lighting evaluation shall be performed at test voltage; the power consumption shall be 110 % of the nominal value; the power consumption shall be 2,4 W or less at the test voltage; electronic ballasts in these units shall have th
30、e corresponding electrical rating.Head lamps with integrated capacitor to power the light while halting shall be built so that the load of the entire equipment on the supply system is not substantially higher than that intended for this equipment according to ISO 6742-1:2015, 4.8. The entire equipme
31、nt shall fulfil the necessary requirements at test voltage, where, based on a discharged capacitor, a charging time of 120 s using test voltage is permissible and the reduction of the dynamo voltage through the charging of the capacitor shall correspond with the following conditions:a) not exceeding
32、 60 % after 15 s;b) not exceeding 37 % after 30 s;c) not exceeding 15 % after 60 s;d) not exceeding 5 % after 90 s;e) not exceeding 1,5 % after 120 s.Any stand light shall emit visible light for at least 240 s.4.2.2 Dynamo-operated rear lightsDynamo-operated rear lights (lamps emitting light to the
33、rear) shall correspond with the requirements of ISO 6742-1:2015, 4.3 (Rear lamp), 4.4 (Stop lamp) and 4.8 (Stand light). And the power consumption shall be 0,6 W or less at the test voltage.Rear lamps with integrated stand lights shall be built so that the load of the entire equipment on the supply
34、system is not substantially higher than that intended for this equipment. The entire equipment shall fulfil the necessary requirements at test voltage, where, based on a discharged capacitor, a charging 2 ISO 2015 All rights reservedBS ISO 6742-4:2015ISO 6742-4:2015(E)time of 120 s using test voltag
35、e is permissible and the reduction of the dynamo voltage through the charging of the capacitor shall correspond with the following conditions:a) not exceeding 60 % after 15 s;b) not exceeding 37 % after 30 s;c) not exceeding 15 % after 60 s;d) not exceeding 5 % after 90 s;e) not exceeding 1,5 % afte
36、r 120 s.Any stand light shall emit visible light for at least 240 s.4.2.3 Dynamos4.2.3.1 General characteristics of generatorsFor measurements according to 4.2.3, voltage and power of dynamos shall meet the values of Table 1.For generators, for which the outputs characteristics are depending on diam
37、eter of the wheel, the minimum values given in Table 1 of the voltage and the efficiency refer to the largest outside diameter of the wheel as provided by the manufacturer. The measurement of the maximum values in Table 1 of the voltage refers to the smallest outside diameter of the wheel as stated
38、by the manufacturer.Table 1 Characteristics of generatorsType of generatorSystemSpeed km/hEfficiency%15 5 101530Frictional drive6 V/3 W and 6 V/2,4 W and 6 V/1,5 W with fixed resistor5,7 V7,5 V3 V7,5 V5,7 V7,5 V306 V/1,5 W with electric load1,35 W4,7 W0,2 W4,7 W1,35 W4,7 W30Positive drive6 V/3 W and
39、 6 V/2,4 W and 6 V/1,5 W with fixed resistor5,7 V7,5 V3 V7,5 V5,7 V7,5 V306 V/1,5 W with electric load1,35 W4,7 W0,2 W4,7 W1,35 W4,7 W304.2.3.2 Generator Frictional dynamoFor dynamos which press against the driving wheel over a swivel bearing through spring force, the spring force, measured perpendi
40、cularly to the rotational axis of the dynamo, shall be 10 N inside of the total swivel area to loose contact with tyre. This value shall also be used for the measurement of the efficiency.Should an AC voltage of 50 Veffor a DC voltage of 75 V be exceeded for this unloaded dynamo within the specified
41、 speed range, additional measures shall be provided in order to meet this voltage limit.4.2.3.3 Generator Positive driveFor dynamos without gears and for the largest outside diameter of the wheel permissible for these dynamos and at a speed of 5 km/h, the frequency of the AC voltage shall be at leas
42、t 6 Hz. ISO 2015 All rights reserved 3BS ISO 6742-4:2015ISO 6742-4:2015(E)Should an AC voltage of 50 Veffor a DC voltage of 75 V be exceeded for this unloaded dynamo within the specified speed range, additional measures shall be provided in order to meet this voltage limit.4.3 Test Methods4.3.1 Dyna
43、mo-operated front lightsDynamo-operated front lights (lamps emitting light to the front) have to be tested corresponding with the test methods of ISO 6742-1:2015, 4.2 (Front position lamp), 4.5 (Low beam) and 4.6 (High beam). The test voltage shall be the rated voltage of substantially sinusoidal AC
44、 (frequency 50 Hz or 60 Hz) or DC.Measure the voltage at the terminal of the dynamo.4.3.2 Dynamo-operated rear lightsDynamo-operated rear lights (lamps emitting light to the rear) have to be tested corresponding with the test methods of ISO 6742-1:2015, 4.3 (Rear lamp), 4.4 (Stop lamp) and 4.8 (Stan
45、d light). The test voltage shall be the rated voltage of substantially sinusoidal AC (frequency 50 Hz or 60 Hz) or DC.Measure the voltage at the terminal of the dynamo.4.3.3 Dynamos4.3.3.1 General characteristics of generatorsMeasure the voltage and power at the terminal of the dynamo.The efficiency
46、 can be measured according to Annex B and each parameter shall be defined by a manufacture of generators.4.3.3.2 Frictional dynamos6 V/3 W dynamos at a load of 12 , 6 V/2,4 W dynamos at a load of 15 and 6 V/1,5 W LED dynamos at an electronic load according Annex A shall then be applied or at a load
47、of 24 .Before the measurement, the dynamo thus loaded shall be operated at an ambient temperature of (23 5) C without forced cooling for 20 min at a number of revolutions corresponding to a speed of 30 km/h After cooling of the dynamo to ambient temperature, the voltage characteristics as well as th
48、e efficiency shall be determined. Here, a driving wheel with a treadless surface shall be used.The measurements shall be carried out with the following procedure: determine output voltage and efficiency after 5 min of continuous operation at a speed of 15 km/h; determine output voltage after reducti
49、on of speed to 5 km/h; determine output voltage after raising speed up to, but not exceeding 30 km/h.4.3.3.3 Positive drive dynamos6 V/3 W dynamos at a load of 12 , 6 V/2,4 W dynamos at a load of 15 and 6 V/1,5 W LED dynamos at an electronic load according to Annex A shall then be applied or at a load of 24 .Before the measurement, the dynamo thus loaded shall be operated at an ambient temperature of (23 5) C without forced cooling for 20 min at a number of
