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1、BRITISH STANDARD BS ISO 16750-4:2006 Road vehicles Environmental conditions and testing for electrical and electronic equipment Part 4: Climatic loads ICS 43.040.10 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:25:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 16750-4:2006 This B
2、ritish Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2006 BSI 2006 ISBN 0 580 48761 X National foreword This British Standard reproduces verbatim ISO 16750-4:2006 and implements it as the UK national standard. The UK participation in its prepa
3、ration was entrusted to Technical Committee AUE/16, Electrical and electronic equipment, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publicatio
4、ns referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessar
5、y provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpre
6、tation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 16, an inside back cov
7、er and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:25:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number
8、ISO 16750-4:2006(E) INTERNATIONAL STANDARD ISO 16750-4 Second edition 2006-08-01 Road vehicles Environmental conditions and testing for electrical and electronic equipment Part 4: Climatic loads Vhicules routiers Spcifications denvironnement et essais de lquipement lectrique et lectronique Partie 4:
9、 Contraintes climatiques BS ISO 16750-4:2006 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:25:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:25:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Contents Page Foreword iv 1 Scope
10、. 1 2 Normative references. 1 3 Terms and definitions. 2 4 Operating temperature ranges 2 5 Tests and requirements . 3 5.1 Tests at constant temperature 3 5.2 Temperature steps 4 5.3 Temperature cycling. 5 5.4 Ice water shock test 8 5.5 Salt spray. 12 5.6 Humid heat, cyclic 13 5.7 Damp heat, steady
11、state. 14 5.8 Corrosion test with flow of mixed gas 14 5.9 Solar radiation. 15 6 Codes for climatic loads 15 7 Protection against dust and water 15 8 Documentation 15 Annex A (informative) Usual tests and requirements for equipment depending on the mounting location 16 BS ISO 16750-4:2006 Licensed C
12、opy: sheffieldun sheffieldun, na, Sun Nov 26 14:25:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword 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
13、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. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the wo
14、rk. ISO collaborates closely with the 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 Inte
15、rnational Standards. Draft International 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 t
16、he 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. ISO 16750-4 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical and electronic equipment. This second edition can
17、cels and replaces the first edition (ISO 16750-4:2003), 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:
18、Mechanical loads Part 4: Climatic loads BS ISO 16750-4:2006 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:25:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 1 Road vehicles Environmental conditions and testing for electrical and electronic equipment Part 4: Climatic loads 1 Scope ISO 16750
19、 applies to electric and electronic systems/components for road vehicles. It describes the potential environmental stresses and specifies tests and requirements recommended for the specific mounting location on/in the vehicle. This part of ISO 16750 describes the climatic loads. 2 Normative referenc
20、es The following 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 condi
21、tions and testing 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 again
22、st foreign objects, water and access IEC 60068-2-1, Environmental testing Part 2: Tests. Tests A: Cold IEC 60068-2-2, Environmental testing Part 2: Tests. Tests B: Dry heat IEC 60068-2-11, Environmental testing Part 2: Tests. Test Ka: Salt mist IEC 60068-2-14, Environmental testing Part 2: Tests. Te
23、st N: Change 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: Tests. Test Z/AD: Composite temperature/humidity cyclic test IEC 60068-2-52, Environmental testing Part 2: Tests Test Kb: S
24、alt mist, 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 16750-4:2006 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov
25、26 14:25:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 16750-1 apply. 4 Operating temperature ranges Table 1 defines operating temperature ranges. The applicable temperature ranges shall be chosen fro
26、m Table 1 and shall be given in the specification of the device under test (DUT). Table 1 Operating temperature ranges Code Tmin C Tmax C 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 case of hot-soak requi
27、rements (TmaxHS), add 15 C to Tmax. For details 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 16750-4:2006 Licensed
28、 Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:25:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 5 Tests and requirements 5.1 Tests at constant temperature 5.1.1 Low-temperature tests 5.1.1.1 Storage 5.1.1.1.1 Purpose This test simulates the exposure of the DUT to low temperatures without electr
29、ical operation, e.g. during shipment of the system/component. Failure mode is insufficient frost resistance, e.g. freezing of liquid crystal displays. 5.1.1.1.2 Test Perform the test according to IEC 60068-2-1 cold at a temperature of 40 C for a duration of 24 h unless otherwise specified in the DUT
30、 specification. The operating mode of the DUT is 1.1 as defined in ISO 16750-1. 5.1.1.1.3 Requirement Functional status shall be class C as defined in ISO 16750-1. 5.1.1.2 Operation 5.1.1.2.1 Purpose This test simulates the exposure of the DUT to low temperatures with electrical operation, e.g. the
31、use of the system/components at very low ambient temperature. Failure mode is electrical malfunction caused by low temperature, e.g. freezing of capacitors with liquid electrolyte. 5.1.1.2.2 Test Perform the test according to IEC 60068-2-1 cold at a temperature of Tmin for a duration of 24 h. The op
32、erating 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 5.1.2.1.1 Purpose This test simulates the exposure of the DUT to high temperatures without electrical operati
33、on, e.g. during the shipment of the system/component. Failure mode is insufficient heat resistance, e.g. warping of plastic housings. 5.1.2.1.2 Test Perform the test according to IEC 60068-2-2 dry heat at a temperature of 85 C for a duration of 48 h unless otherwise specified in the DUT specificatio
34、n. The operating mode of the DUT is 1.1 as defined in ISO 16750-1. BS ISO 16750-4:2006 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:25:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 5.1.2.1.3 Requirement The functional status shall be class C as defined in ISO 16750-1. 5.1.2.2 Operatio
35、n 5.1.2.2.1 Purpose This test simulates 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. thermal degradation of components. 5.1.2.2.2
36、 Test Perform the test according to IEC 60068-2-2 dry heat at a temperature of 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 steps 5.2.1 Purpose This test checks t
37、he mechanical and electrical device for malfunctions which may occur within a small section of the operating temperature range. See Figure 1. Key T temperature, C t time, min Figure 1 Temperature step test (example illustrates code “Q” according to Table 1) 5.2.2 Test Install the DUT in a temperatur
38、e 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 Tmin to Tmax (see Table 1). Wait at each step until the DUT has reached the new temperature. Perform functional tests operating mode 3.2 according to ISO 16750-1 at USmin and
39、USmax according to the specified code letter ISO 16750-2 at each new temperature step. Switch the DUT off during transition to the next temperature. BS ISO 16750-4:2006 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:25:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 5 5.2.3 Requirement The
40、DUT shall take up its normal function at each temperature between Tmin and Tmax, i.e. the functional status shall be class A as defined in ISO 16750-1. 5.3 Temperature cycling 5.3.1 Temperature cycle with specified change rate 5.3.1.1 Purpose This test simulates varying temperatures with electrical
41、operation of the DUT, e.g. during the use of the system/components at fast-changing ambient temperature. If a system/component is exposed to hot-soak temperatures (e.g. engine-mounted systems/components), an additional short temperature peak is added during the high temperature phase of the profile
42、to ensure proper function during short temperature peaks. The electrical operation is switched off during phases of decreasing temperature to avoid electrical heat dissipation of the system/component which would inhibit reaching Tmin inside the system/component. Failure mode is electrical malfunctio
43、n during temperature change. NOTE This test is not intended to be a life test. 5.3.1.2 Test Perform the temperature cycling according to IEC 60068-2-14, Nb. Operate the DUT electrically (functional test) after the whole device has reached Tmin for the shortest possible duration to check the correct
44、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 16750-1 for the phases with electrical operation. The changes in temperature shall correspond to the specifications given in Table 2. For tes
45、ts including hot-soak temperature (TmaxHS), see Figure 3 and Table 3. The long 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 Tmin would prevent this due to the electrical power dissipation. Addition
46、al drying of the test chamber air is not permitted. Perform 30 test cycles as specified. BS ISO 16750-4:2006 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:25:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 Key T temperature, C t time, min a Operating mode 3.2 according to ISO 16750-1. b
47、One cycle. Figure 2 Temperature cycles with specified change rate (Tmin and Tmax see Table 1) Table 2 Temperatures and time duration for temperature cycling (see Figure 2) Code according to Table 1 Time min Temperature C 0 20 C 60 Tmin 150 Tmin 210 20 C 300 Tmax 410 Tmax 480 20 C NOTE In the vehicle
48、 environment, some equipment might experience different conditions regarding temperatures, temperature gradients and duration. In all these cases, use code Z. BS ISO 16750-4:2006 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:25:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 7 Key T temper
49、ature, C t time, min a Functional test operating mode 3.2 according to ISO 16750-1. b Operating mode 3.2 according to ISO 16750-1. c One cycle. Figure 3 Example for a temperature cycle with hot-soak phase (illustrates code “F” according to Table 1) Table 3 Temperatures and time duration for temperature cycling with hot-soak phase (see Figure 3) (illustrates code “F” according to Table 1) Time min Temperature C 0 20