BS-AU-243-2-1991 ISO-7637-1-1990.pdf
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1、BRITISH STANDARD BS AU 243-2: 1991 ISO 7637-1: 1990 Methods of test for Electrical disturbance by conduction and coupling Part 2: Electrical transient conduction along supply lines only on passenger cars and light commercial vehicles with 12 V supply Licensed Copy: London South Bank University, Lond
2、on South Bank University, Sat Dec 09 01:44:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 243-2:1991 This British Standard, having been prepared under the direction of the Automobile Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 29
3、 November 1991 BSI 03-1999 The following BSI references relate to the work on this standard: Committee reference AUE/16 Draft for comment 88/73080 DC ISBN 0 580 20152 X Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Automobile Standards
4、 Policy Committee (AUE/-) to Technical Committee AUE/16, upon which the following bodies were represented: Association of Trailer Manufacturers British Cable Makers Confederation Department of Transport Institution of Electrical Engineers Motor Industry Research Association National Caravan Council
5、Ltd. Society of Motor Manufacturers and Traders Ltd. Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:44:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 243-2:1991 BSI 03-1999i Contents Page Committe
6、es responsible Inside front cover National foreword ii 1Scope 2Normative reference1 3Test procedure 1 4Test instrument description and specifications 3 5General techniques to improve electromagnetic compatibility of device10 Annex A Failure mode severity classification12 Figure 1 Conducted voltage t
7、ransients measurement test setup2 Figure 2 Conducted current transients measurement test setup2 Figure 3 Transient immunity test setup3 Figure 4 Schematic diagram of artificial network4 Figure 5 as a function of frequency from 100 kHz to 100 MHz (AB short-circuited)4 Figure 6 Test pulse 15 Figure 5
8、Test pulse 26 Figure 8 Test pulse 3a7 Figure 9 Test pulse 3b7 Figure 10 Test pulse 48 Figure 11 Test pulse 59 Figure 12 Test pulse 610 Figure 13 Test pulse 710 Table A.1 Test levels13 Table A.2 Example 113 Table A.3 Example 214 Publication(s) referred toInside back cover ZPB Licensed Copy: London So
9、uth Bank University, London South Bank University, Sat Dec 09 01:44:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 243-2:1991 ii BSI 03-1999 National foreword This British Standard has been prepared under the direction of the Automobile Standards Policy Committee and is identical with ISO 7637-
10、1 “Road vehicles Electrical disturbance by conduction and coupling Part 1: Passenger cars and light commercial vehicles with nominal 12 V supply voltage Electrical transient conduction along supply lines only”, published by the International Organization for Standardization (ISO). The Technical Comm
11、ittee has reviewed the provisions of ISO 6722-3, to which reference is made in the text and has decided that they are acceptable for use in conjunction with this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are respon
12、sible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 14, an inside back cover and a back cover. This standard has be
13、en updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:44:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 7637-1:1990
14、 (E) BSI 03-19991 1 Scope This part of ISO 7637 specifies test methods and procedures to ensure the compatibility to conducted electrical transients of equipment installed on passenger cars and light commercial vehicles fitted with a 12 V electrical system. It describes bench tests for both the inje
15、ction and measurement of transients. Functional status classifications for immunity to transients are given in Annex A. NOTEGeneral guidelines for the evaluation of transient emissions, test procedures for which are given in clause 3, will form the subject of a future addendum. 2 Normative reference
16、 The following standard contains provisions which, through reference in this text, constitute provisions of this part of ISO 7637. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this part of ISO 7637 are encourag
17、ed to investigate the possibility of applying the most recent edition of the standard indicated. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 6722-3:1984, Road vehicles Unscreened low-tension cables Part 3: Conductor sizes and dimensions. 3 Test procedure
18、s 3.1 General Methods for measuring the transient emission on supply lines and test methods for the immunity of devices against such transients are given. These tests, called “bench tests”, are made in the laboratory.1) The bench test methods, some of which require the use of the artificial network,
19、 will provide comparative results between laboratories. They also give a basis for the development of devices and systems and may be used during the production phase. A bench test method for the evaluation of the immunity of a device against supply line transients may be performed by means of a test
20、 pulse generator; this may not cover all types of transients which can occur in a vehicle. Therefore, the test pulses described in 4.6 are characteristic of typical pulses. In special cases, it may be necessary to apply additional test pulses. However, some test pulses may be omitted, if a device de
21、pending on its function or its connection is not influenced by comparable transients in the vehicle. It is part of the vehicle manufacturers responsibility to define the test pulses required for a specific device. To ensure proper vehicle operation in the electromagnetic environment, on-board testin
22、g is essential. 3.2 Test temperature and test voltage The ambient temperature during the test shall be 23 C 5 C. The test voltages shall be as follows: UA = 13,5 V 0,5 V UB = 12 V 0,2 V unless other values are agreed upon by the users of this part of ISO 7637, in which case such values shall be docu
23、mented in the test reports. 3.3 Transient emissions test 3.3.1 Voltage transients Voltage transients from the disturbance source, the device under test, are measured using the artificial network to standardize the impedance loading on the device under test (see 4.1). The disturbance source is connec
24、ted via the artificial network to the shunt resistor Rs1 (see 4.2), the switch S (see 4.3) and the power supply (see 4.4), as given in Figure 1. The leads between the terminals of the disturbance source, the device under test, and the artificial network shall be laid out in a straight parallel line
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