1、BSI Standards PublicationBS ISO 17449:2015Road vehicles Safety glazingmaterials Test methodsfor properties of electricallyheated glazingBS ISO 17449:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 17449:2015.The UK participation in its preparation was entr
2、usted to TechnicalCommittee AUE/1, Vehicle lighting and signalling.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
3、. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 85827 7ICS 43.040.65Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on
4、30 November 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 17449:2015 ISO 2015Road vehicles Safety glazing materials Test methods for properties of electrically heated glazingVhicules routiers Vitrages de scurit Mthodes dessai pour les proprits des vitrages cha
5、uffs lectriquementINTERNATIONAL STANDARDISO17449First edition2015-11-15Reference numberISO 17449:2015(E)BS ISO 17449:2015ISO 17449:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this pub
6、lication may be reproduced or utilized 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 cou
7、ntry of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 17449:2015ISO 17449:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Specimens 35 Condit
8、ioning of test specimens . 36 Application of test . 37 Requirements 47.1 Circuit continuity and heating power . 47.1.1 Purpose of test . 47.1.2 Apparatus . 47.1.3 Procedure . 47.1.4 Expression of results 47.2 Driving visibility 57.2.1 Purpose of test . 57.2.2 Apparatus . 57.2.3 Procedure . 57.2.4 Ex
9、pression of results 57.3 Electrical attachment bond performance 57.3.1 Purpose of test . 57.3.2 Apparatus . 57.3.3 Procedure . 67.3.4 Expression of results 67.4 Electrical attachment bending performance 67.4.1 Purpose of test . 67.4.2 Procedure . 67.4.3 Expression of results 67.5 Hot spot and heatin
10、g uniformity . 67.5.1 Purpose of test . 67.5.2 Apparatus . 77.5.3 Procedure . 77.5.4 Expression of results 77.6 Defrosting efficiency 77.6.1 Purpose of test . 77.6.2 Apparatus . 77.6.3 Procedure . 87.6.4 Expression of results 87.7 High voltage durability . 87.7.1 Purpose of test . 87.7.2 Procedure .
11、 87.7.3 Expression of results 97.8 Low temperature performance 97.8.1 Purpose of test . 97.8.2 Apparatus . 97.8.3 Procedure . 97.8.4 Expression of results 97.9 Long term humidity durability 97.9.1 Purpose of test . 97.9.2 Apparatus . 97.9.3 Procedure 107.9.4 Expression of results .108 Acceptance cri
12、teria .10 ISO 2015 All rights reserved iiiContents PageBS ISO 17449:2015ISO 17449:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out
13、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. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO coll
14、aborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approv
15、al 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 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the sub
16、ject 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 document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trad
17、e 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 expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Tec
18、hnical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 35, Lighting and visibility.iv ISO 2015 All rights reservedBS ISO 17449:2015INTERNATIONAL STANDARD ISO 17449:2015(E)Road
19、 vehicles Safety glazing materials Test methods for properties of electrically heated glazing1 ScopeThis International Standard provides the test methods and acceptance criteria for circuit continuity and heating power, driving visibility, electrical attachment bond performance, electrical attachmen
20、t bending performance, hot spot identification and heating uniformity, defrosting efficiency, high voltage durability, low temperature performance and long term humidity durability, for all electrically heated safety glazing materials in a road vehicle. This International Standard provides test prot
21、ocols for the static performance of an electrically heated glazing material; it is not representative of in-vehicle performance.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated referen
22、ces, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 3538, Road vehicles Safety glazing materials Test methods for optical propertiesIEC 600512, Direct acting indicating analogue electrical measuring instrum
23、ents and their accessories, Part 2 Special requirements for ammeters and voltmeters3 Terms and definitionsFor the purpose of this document, the following terms and definitions apply.3.1heating evaluation areafor Type 1 (3.7), represented by an area formed by outermost conductors at an extended dista
24、nce of 20 mm wider than the bus bars (along the edges) and extended to 50 mm on both the top and bottom, in the absence of specific requirements and for a glazing equipped with heating circuits formed by evenly distanced conductive lines and bus bars near to the glass edgesNote 1 to entry: If the ex
25、tended distance is over the edge of the glass, then take the glass edge as the border of evaluation area. The size of this generated area is calculated using CAD, see Figure 1. For other specifically designed heaters with e.g. circular shaped heater, product specification can be referenced for the h
26、eating evaluation area.for Type 2 (3.8) and Type 3 (3.9), shall be the same as the area of the heating elements themselves, in the absence of special requirementsNote 2 to entry: No additional area shall be included. ISO 2015 All rights reserved 1BS ISO 17449:2015ISO 17449:2015(E)3Heating evaluation
27、 area154250mm50mm20mmKey1 glass2 heating circuits3 electrical attachment4 bus bar5 outmost conductorFigure 1 Heating evaluation area of Type 13.2electrical attachmentcomponents used for connecting to the vehicle power supply3.3defrostingelimination of frost from the exterior of the glazing by heatin
28、g at specified voltage3.4melted areaarea of the outer glazed surface of the sample having a dry surface or covered with melted frostNote 1 to entry: Partially melted area is excluded. The melted area shall be determined visually.3.5defrosting efficiencyratio of the melted area to the heating evaluat
29、ion area after supplying specified voltage for the specified period of time at specified ambient condition3.6hot spotany area on outer surface of the whole part that exceeds the maximum temperature defined in the product specification after the part is supplied with specified voltage for the specifi
30、ed heating time period at the specified ambient condition3.7Type 1heater circuit consisting of conductors applied to the inside surface of a tempered or laminated safety glass or a plastic safety glazing parts by means of a screen print, ink jet, or other method2 ISO 2015 All rights reservedBS ISO 1
31、7449:2015ISO 17449:2015(E)3.8Type 2heater circuit consisting of discrete conductor lines applied to the inside of a laminated safety glazing by incorporation of metal wires or any other suitable method3.9Type 3heater circuit utilizing a transparent conductive film applied to one of the inner surface
32、s of a laminated safety glazing4 SpecimensTest specimens can be production parts or test pieces which are upon the agreement between glass manufacturer and its customer.5 Conditioning of test specimensUnless otherwise specified, specimens to be tested shall be conditioned prior to testing under the
33、following conditions for at least 4 h: ambient temperature: 23 C 2 C; atmospheric pressure: 86 kPa to 106 kPa (860 mbar to 1 060 mbar); ambient relative humidity: 60 % 20 %.6 Application of testFor certain types of safety glazing material, some of the tests specified in this International Standard a
34、re not appropriate to be applied. Test items and number of test specimens for a certain type of electrically heating glazing are suggested in Table 1.Table 1 Test items and number of test specimensNo. Test item SubclauseType Number of specimens1 2 31Circuit continuity and heating power7.1 X X X 32 D
35、riving visibility 7.2 X X X 13Electrical attachment bond performance7.3 X X X 34Electrical attachment bending performance7.4 X 35Hot spot identification and heating uniformity7.5 X X X 16 Defrosting efficiency 7.6 X X X 17 High voltage durability 7.7 X X X 38Low temperature performance7.8 X X 39Long
36、 term humidity durability7.9 X X X 3X Test required. Test needs not to be carried out. ISO 2015 All rights reserved 3BS ISO 17449:2015ISO 17449:2015(E)7 Requirements7.1 Circuit continuity and heating power7.1.1 Purpose of testThe purpose of this test is to determine whether the heating system circui
37、t has the correct continuity between elements and heating power conforms to the product specification.7.1.2 Apparatus7.1.2.1 Variable direct current (DC) power supply, rated at a minimum of two times the voltage and two times the current specified for the parts to be tested.7.1.2.2 Voltage meter, co
38、nforming to IEC 60051-2, with an Accuracy Class of 1.7.1.2.3 Ampere meter, conforming to IEC 60051-2, with an Accuracy Class of 1.7.1.2.4 Heat sensitive paper.7.1.2.5 Projector, conforming to ISO 3538.7.1.2.6 Thermal camera, with range of 0 C to 100 C, accuracy of 0,5 C, capable of measuring and rec
39、ording surface of the tested area with a spatial resolution of 2 mm. The thermal camera emissivity can be adjusted to a level appropriate to glass substrate.7.1.3 Procedure7.1.3.1 Circuit continuityFor Type 1 parts, supply the voltage defined in product specification to the electrical attachments of
40、 the part. Lay heat sensitive paper across the heating line/conductor. Optionally, use a thermal camera to check the part after power is supplied.For Type 2 parts, supply the voltage defined in product specification to the electrical attachments of the part. Set the part vertically between the proje
41、ctor and a display screen. Light is projected through the part to the display screen. Wires with light shadow on the screen are broken wires.For Type 3 parts, supply the voltage defined in product specification to the electrical attachments of the part, record value of ampere meter.7.1.3.2 Heating p
42、owerIn the absence of special requirements, heat the part for 30 min, and read the electrical current value shown on the ampere meter.7.1.4 Expression of results7.1.4.1 Circuit continuityFor Type 1 parts, check the colour change in the paper or in thermal camera due to heat. Make record of broken he
43、ating line/conductor.For Type 2 parts, check the shadow of the part on the screen. Make record of broken wire position on the part.4 ISO 2015 All rights reservedBS ISO 17449:2015ISO 17449:2015(E)For Type 3 parts, calculate the resistance according to the voltage measured at the attachments and the c
44、orresponding current as measured in 7.1.3.2, and determine the continuity.7.1.4.2 Heating powerCalculate the heating power as the product of the voltage measured at the electrical attachments and the corresponding current measured in 7.1.3.2.7.2 Driving visibility7.2.1 Purpose of testThe purpose of
45、this test is to determine whether driving visibility of the heated glass meets the requirements of the product specification.This test is applicable only for parts whose transparent area is heated.7.2.2 Apparatus7.2.2.1 Steel ruler and reading microscope, with respective accuracy of 0,5 mm and 0,001
46、 mm.7.2.3 ProcedureFor Type 1 parts, measure the width and length of heating lines/conductors, and the distance between two adjacent lines/conductors.For Type 2 parts, measure the wire width or diameter, and calculate the number of wires per centimetre in cross direction.For Type 3 parts, measure lu
47、minous light transmittance according to ISO 3538.Regardless of the heating conductor type, all parts used as windscreen shall also have secondary image and optical distortion measured according to ISO 3538 while specified voltage being applied.7.2.4 Expression of resultsFor Type 1 part, the driving
48、visibility is expressed as the maximum width of conductors, minimum distance between two adjacent conductors, and the ratio of the total opaque wires area to heating evaluation area.For Type 2 part, driving visibility is expressed as the width or diameter of wire and wire density (wires/cm).For Type
49、 3 part, driving visibility is expressed as the luminous light transmittance according to ISO 3538.All windscreen parts shall have the levels of optical distortion and secondary image recorded while the specified voltage is applied.7.3 Electrical attachment bond performance7.3.1 Purpose of testThe purpose of this test is to determine whether the electrical attachments meet the requirements of the product specification after being subjected to mechanical forces.7.3.2 Apparatus7.3.2.1 Force meter with accu
