1、BS ISO16750-4:2010ICS 43.040.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDRoad vehicles Environmentalconditions and testingfor electrical andelectronic equipmentPart 4: Climatic loadsThis British Standardwas published under theauthority of the StandardsPoli
2、cy and StrategyCommittee on 30 April2010 BSI 2010ISBN 978 0 580 60872 8Amendments/corrigenda issued since publicationDate CommentsBS ISO 16750-4:2010National forewordThis British Standard is the UK implementation of ISO 16750-4:2010. Itsupersedes BS ISO 16750-4:2006 which is withdrawn.The UK partici
3、pation in its preparation was entrusted to TechnicalCommittee AUE/16, Electrical and electronic equipment.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are
4、 responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS ISO 16750-4:2010Reference numberISO 16750-4:2010(E)ISO 2010INTERNATIONAL STANDARD ISO16750-4Third edition2010-04-15Road vehicles Environmental conditions and testing for electr
5、ical and electronic equipment Part 4: Climatic loads Vhicules routiers Spcifications denvironnement et essais de lquipement lectrique et lectronique Partie 4: Contraintes climatiques BS ISO 16750-4:2010ISO 16750-4:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance wit
6、h Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing p
7、olicy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Ever
8、y care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2010 All rights reserved. Unless otherwise specifie
9、d, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case
10、postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2010 All rights reservedBS ISO 16750-4:2010ISO 16750-4:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references1
11、3 Terms and definitions .2 4 Operating temperature ranges.2 5 Tests and requirements3 5.1 Tests at constant temperature .3 5.2 Temperature step test.4 5.3 Temperature cycling tests5 5.4 Ice water shock test 8 5.5 Salt spray tests 11 5.6 Humid heat, cyclic test13 5.7 Damp heat, steady-state test15 5.
12、8 Corrosion test with flow of mixed gas 15 5.9 Solar radiation .16 5.10 Dust test .16 6 Codes for climatic loads.18 7 Protection against dust and water.18 8 Documentation 18 Annex A (informative) Usual tests and requirements for equipment depending on the mounting location.19 Bibliography20 BS ISO 1
13、6750-4:2010ISO 16750-4:2010(E) iv ISO 2010 All rights reservedForeword ISO (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 through ISO technical comm
14、ittees. 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 collaborates closely with the
15、International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft Internation
16、al Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be th
17、e subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 16750-4 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical and electronic equipment. This third edition cancels and replaces the second edition (I
18、SO 16750-4:2006), which has been technically revised. ISO 16750 consists of the following parts, under the general title Road vehicles Environmental conditions and testing for electrical and electronic equipment: Part 1: General Part 2: Electrical loads Part 3: Mechanical loads Part 4: Climatic load
19、s Part 5: Chemical loads BS ISO 16750-4:2010INTERNATIONAL STANDARD ISO 16750-4:2010(E) ISO 2010 All rights reserved 1Road vehicles Environmental conditions and testing for electrical and electronic equipment Part 4: Climatic loads 1 Scope This part of ISO 16750 applies to electrical and electronic s
20、ystems/components for road vehicles. This part of ISO 16750 describes the potential environmental stresses and specifies tests and requirements recommended for the specific mounting location on/in the road vehicle. This part of ISO 16750 describes climatic loads. 2 Normative references The following
21、 referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 16750-1, Road vehicles Environmental conditions and testin
22、g for electrical and electronic equipment Part 1: General ISO 16750-2, Road vehicles Environmental conditions and testing for electrical and electronic equipment Part 2: Electrical loads ISO 20653, Road vehicles Degrees of protection (IP-Code) Protection of electrical equipment against foreign objec
23、ts, water and access IEC 60068-2-1, Environmental testing Part 2-1: Tests Test A: Cold IEC 60068-2-2, Environmental testing Part 2-2: Tests Test B: Dry heat IEC 60068-2-11, Environmental testing Part 2-11: Tests Test Ka: Salt mist IEC 60068-2-14, Environmental testing Part 2-14: Tests Test N: Change
24、 of temperature IEC 60068-2-30, Environmental testing Part 2-30: Tests Test Db: Damp heat, cyclic (12 h + 12 h cycle) IEC 60068-2-38, Environmental testing Part 2-38: Tests Test Z/AD: Composite temperature/humidity cyclic test IEC 60068-2-52, Environmental testing Part 2-52: Tests Test Kb: Salt mist
25、, cyclic (sodium chloride solution) IEC 60068-2-60, Environmental testing Part 2: Tests Test Ke: Flowing mixed gas corrosion test IEC 60068-2-78, Environmental testing Part 2-78: Tests Test Cab: Damp heat, steady state BS ISO 16750-4:2010ISO 16750-4:2010(E) 2 ISO 2010 All rights reserved3 Terms and
26、definitions For the purposes of this document, the terms and definitions given in ISO 16750-1 apply. 4 Operating temperature ranges The applicable operating temperature ranges shall be chosen from Table 1 and shall be given in the specification of the device under test (DUT). Table 1 Operating tempe
27、rature ranges Code Minimum operating temperature TminC Maximum operating temperature TmaxC A 20 65 B 30 65 C 65 D 70 E 75 F 80 G 85 H 90 I 95 J 100 K 105 L 110 M 115 N 120 O 125 P 130 Q 140 R 150 S 155 T 40 160 Z as agreed upon In the case of hot-soak requirements, add 15 C to the maximum operating
28、temperature, Tmax. See 5.3.1. The paint repair temperature, TmaxPR, can be higher than the operating temperature and shall be given in the specification of the DUT. An applicable test shall be agreed between supplier and vehicle manufacturer. BS ISO 16750-4:2010ISO 16750-4:2010(E) ISO 2010 All right
29、s reserved 35 Tests and requirements 5.1 Tests at constant temperature 5.1.1 Low-temperature tests 5.1.1.1 Storage test 5.1.1.1.1 Purpose This test simulates the exposure of the DUT to low temperatures without electrical operation, e.g. during shipment of the system/component. Failure mode is insuff
30、icient frost resistance, e.g. the freezing of liquid crystal displays. 5.1.1.1.2 Test method Perform the test in accordance with IEC 60068-2-1, Test A, at a temperature of 40 C for a duration of 24 h unless otherwise specified in the DUT specification. The operating mode of the DUT is 1.1, as define
31、d in ISO 16750-1. 5.1.1.1.3 Requirement The minimum functional status shall be class C, as defined in ISO 16750-1. 5.1.1.2 Operation test 5.1.1.2.1 Purpose This test simulates the exposure of the DUT to low temperatures with electrical operation, e.g. the use of the system/components at very low amb
32、ient temperature. Failure mode is electrical malfunction caused by low temperature, e.g. the freezing of capacitors with liquid electrolyte. 5.1.1.2.2 Test method Perform the test in accordance with IEC 60068-2-1, Test A, at the minimum operating temperature, Tmin, for a duration of 24 h. The operat
33、ing mode of the DUT is 3.2, as defined in ISO 16750-1. 5.1.1.2.3 Requirement The functional status shall be class A, as defined in ISO 16750-1. 5.1.2 High-temperature tests 5.1.2.1 Storage test 5.1.2.1.1 Purpose This test simulates the exposure of the DUT to high temperatures without electrical oper
34、ation, e.g. during the shipment of the system/component. Failure mode is insufficient heat resistance, e.g. the warping of plastic housings. BS ISO 16750-4:2010ISO 16750-4:2010(E) 4 ISO 2010 All rights reserved5.1.2.1.2 Test method Perform the test in accordance with IEC 60068-2-2, Test B, at a temp
35、erature of 85 C for a duration of 48 h unless otherwise specified in the DUT specification. The operating mode of the DUT is 1.1, as defined in ISO 16750-1. 5.1.2.1.3 Requirement The functional status shall be class C, as defined in ISO 16750-1. 5.1.2.2 Operation test 5.1.2.2.1 Purpose This test sim
36、ulates the exposure of the DUT to high temperatures with electrical operation, e.g. the use of the system/components at very high ambient temperature. Failure mode is electrical malfunction caused by high temperature, e.g. the thermal degradation of components. 5.1.2.2.2 Test method Perform the test
37、 in accordance with IEC 60068-2-2, Test B, at the maximum operating temperature, Tmax, for a duration of 96 h. Use operating mode 3.2, as defined in ISO 16750-1. 5.1.2.2.3 Requirement The functional status shall be class A, as defined in ISO 16750-1. 5.2 Temperature step test 5.2.1 Purpose This test
38、 checks the mechanical and electrical device for malfunctions which may occur within a small section of the operating temperature range. Figure 1 illustrates the temperature step test, using code Q as specified in Table 1. Key T temperature, in C t time, in min Figure 1 Example of temperature step t
39、est, using code Q in accordance with Table 1 BS ISO 16750-4:2010ISO 16750-4:2010(E) ISO 2010 All rights reserved 55.2.2 Test method Install the DUT in a temperature chamber, decrease the temperature in steps of 5 C from 20 C to Tmin, and then increase the temperature in steps of 5 C from Tminto Tmax
40、(see Table 1). Wait at each step until the DUT has reached the new temperature. Perform functional tests operating mode 3.2 in accordance with ISO 16750-1 at minimum supply voltage, USmin, and at maximum supply voltage, USmax, in accordance with the specified ISO 16750-2 code letter, at each new tem
41、perature step. Switch the DUT off during transition to the next temperature. 5.2.3 Requirement The DUT shall take up its normal function at each temperature between Tminand Tmax, i.e. the functional status shall be class A, as defined in ISO 16750-1. 5.3 Temperature cycling tests 5.3.1 Temperature c
42、ycle with specified change rate 5.3.1.1 Purpose This test simulates varying temperatures with electrical operation of the DUT, e.g. during the use of the system/components at changing ambient temperature. If a system/component is exposed to hot-soak temperatures (e.g. engine-mounted systems/componen
43、ts), an additional short temperature peak is added during the high-temperature phase of the profile to ensure proper function during short temperature peaks. The electrical operation is switched off during phases of decreasing temperature in order to avoid electrical heat dissipation of the system/c
44、omponent, which would inhibit reaching Tmininside the system/component. Failure mode is electrical malfunction during temperature change. NOTE This test is not intended to be a life test. 5.3.1.2 Test method Perform the temperature cycling in accordance with IEC 60068-2-14, Test Nb. Operate the DUT
45、electrically (functional test) after the whole device has reached Tminfor the shortest possible duration in order to check the correct function of the device. In addition, operate it electrically between 210 min and 410 min of the cycle (see Figure 2). Use operating mode 3.2, as defined in ISO 16750
46、-1, for the phases with electrical operation. The changes in temperature shall correspond to the specifications given in Table 2. For tests including hot-soak temperature, TmaxHS, see Table 3. Figure 3 illustrates the temperature cycle with hot-soak phase, using code F as specified in Table 1. The l
47、ong period of electrical operation is started at 20 C in order to allow possible condensation of humidity on the DUT. A permanent operation starting at Tminwould prevent this due to the electrical power dissipation. Additional drying of the test chamber air is not permitted. Perform 30 test cycles a
48、s specified. BS ISO 16750-4:2010ISO 16750-4:2010(E) 6 ISO 2010 All rights reservedKey T temperature, in C t time, in min Tminminimum operating temperature, in C (see Table 1) Tmaxmaximum operating temperature, in C (see Table 1) aOperating mode 3.2 in accordance with ISO 16750-1. bOne cycle. Figure
49、2 Temperature cycles with specified change rate Table 2 Temperatures and time duration for temperature cycling (see Figure 2) Time min Temperature C 0 20 60 Tmin150 Tmin210 20 300 Tmax410 Tmax480 20 NOTE Codes are in accordance with Table 1 (codes A to T). In the vehicle environment, some equipment might experience different conditions regarding temperatures, temperature gradients and duration: in all these cases, code Z is used. BS ISO 16750-4
