1、BRITISH STANDARD BS IEC 1000-2-5:1995 Implementation of IEC 1000-2-5:1995 Electromagnetic compatibility (EMC) Part 2: Environment Section 5: Classification of electromagnetic environments Basic EMC publication ICS 29.020BSIEC 1000-2-5:1995 This British Standard, having been prepared under the direct
2、ionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and comes intoeffect on 15August1996 BSI 02-1999 The following BSI references relate to the work on this standard: Committee reference GEL/210 Draft for comment 91/28749 DC ISBN 0 580 26020 8 Committees
3、responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee GEL/210, Electromagnetic compatibility, upon which the following bodies were represented: Association of Control Manufacturers TACMA (BEAMA Ltd.) Association of Consulting Engineers As
4、sociation of Manufacturers of Domestic Electrical Appliances Association of Manufacturers of Power Generating Systems BEAMA Ltd. BEAMA Metering Association British Industrial Truck Association British Lighting Association for the Preparation of Standards (BRITLAPS) British Telecommunications plc Bui
5、lding Automation and Mains Signalling Association (BAMSA) Department of Health Department of Trade and Industry Electrical Installation Equipment Manufacturers Association (BEAMA Ltd.) Electricity Association ERA Technology Ltd. Federation of the Electronics Industry GAMBICA (BEAMA Ltd.) Health and
6、Safety Executive Induction and Dielectric Heating Manufacturers Assocation Institution of Electrical Engineers International Association of Broadcasting Manufacturers Lighting Industry Federation Ltd. Ministry of Defence Motor Industry Research Association National Air Traffic Services Power Supply
7、Manufacturers Association PSMA (BEAMA Ltd.) Professional Lighting and Sound Association Radiocommunications Agency Rotating Electrical Machines Association (BEAMA Ltd.) Society of British Gas Industries Society of Motor Manufacturers and Traders Ltd. Transmission and Distribution Association (BEAMA
8、Ltd.) The following bodies were also represented in the drafting of the standard through subcommittee GEL/210/8, EMC Low frequency disturbances. Electrical Contractors Association Heating, Ventilating and Air Conditioning Association British Radio and Electronic Equipment Manufacturers Association A
9、mendments issued since publication Amd. No. Date CommentsBSIEC 1000-2-5:1995 BSI 02-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword iv Text of CEI IEC 1000-2-5 1BSIEC 1000-2-5:1995 ii BSI 02-1999 National foreword This British Standard reproduces verbatim
10、 IEC1000-2-5:1995 and implements it as the UK national standard. This British Standard is published under the direction of the Electrotechnical Sector Board whose Technical Committee GEL/210 has the responsibility to: aid enquirers to understand the text; present to the responsible international com
11、mittee any enquiries on interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. NOTEInternational and European Standards, as well as overseas standards, are available from Customer Services, BSI,3
12、89 Chiswick High Road, London W44AL. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summ
13、ary of pages This document comprises a front cover, an inside front cover, pages i and ii, theCEI IEC title page, pages ii to vi, pages 1 to 38 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment tabl
14、e on theinside front cover.BSIEC 1000-2-5:1995 ii BSI 02-1999 Contents Page Foreword iv 1 General 1 1.1 Scope and object 1 1.2 Normative reference 1 1.3 Approach 3 2 Definitions 3 2.1 Annotated definitions on electromagnetic compatibility 3 2.2 Acronyms 4 3 Users guide for this report 4 3.1 Rational
15、e for classification system 4 3.2 Environmental phenomena 4 3.3 Simplification of the environmental database 5 4 Low-frequency electromagnetic phenomena 7 4.1 Conducted low-frequency phenomena 7 4.2 Radiated low-frequency phenomena 9 5 High-frequency electromagnetic phenomena 11 5.1 Conducted high-f
16、requency phenomena 11 5.2 Radiated high-frequency phenomena 14 6 Electrostatic discharge 15 6.1 ESD currents 15 6.2 Fields produced by ESD currents 16 7 Classification of environments 16 7.1 Types of location 16 7.2 Impinging disturbances and equipment ports 17 8 Principles of the selection of immun
17、ity levels 18 8.1 Approach 18 8.2 Uncertainties 18 8.3 Criticality criteria 19 Annex A Examples of compatibility levels for typical location classes 20 Annex B Radiated oscillatory disturbances 36 Annex C Radiated pulsed disturbances 38 Figure 1 Schematic of the two-step approach used for classifica
18、tion with phenomenon-oriented input tables and location-oriented output tables 2 Figure 2 Ports of entry of electromagnetic disturbances into equipment 17 Figure B Typical waveforms for radiated oscillatory disturbances 36 Figure C Typical waveforms for radiated pulsed disturbances 38 Table 1 Princi
19、pal phenomena causing electromagnetic disturbances 6 Table 2 Range of disturbance degrees for harmonics in low-voltage power systems 7 Table 3 Range of disturbance degrees for signalling voltages in power systems 8 Table 4 Sources and range of disturbance degrees for voltage amplitude and frequency
20、in power systems 9 Table 5 Sources and range of disturbance degrees for low-frequency, common-mode induced voltages in signal and control cables 9 Table 6 Sources and range of disturbance degrees for low-frequency magnetic fields 10 Table 7 Sources and range of disturbance degrees for low-frequency
21、electric fields 10 Table 8 Disturbance degrees of induced CW voltages with respect to reference ground 11BS IEC 1000-2-5:1995 BSI 02-1999 iii Page Table 9 Sources and range of disturbance degrees for conducted unidirectional transients in low-voltage a.c. power systems 13 Table 10 Sources and range
22、of disturbance degrees for conducted oscillatory transients in low-voltage a.c. power systems 13 Table 11 Sources and range of disturbance degrees for radiated oscillatory disturbances 14 Table 12 Sources and range of disturbance degrees for radiated pulsed disturbances 15 Table 13 Sources and range
23、 of disturbance degrees for ESD 16 Table 14 Range of disturbance degrees for field gradients caused by ESD 16 Table A.1 Location class type1 21 Table A.2 Location class type2 23 Table A.3 Location class type3 25 Table A.4 Location class type4 27 Table A.5 Location class type5 29 Table A.6 Location c
24、lass type6 31 Table A.7 Location class type7 33 Table A.8 Location class type8 35 Table B.1 37BSIEC 1000-2-5:1995 iv BSI 02-1999 Foreword 1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC Na
25、tional Committees). The object of the IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, the IEC publishes International Standards. Their preparation is entrusted to techni
26、cal committees; any IEC National Committee interest in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organ
27、ization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matters, prepared by technical committees on which all the National Committees having a special interest therein are re
28、presented, express as nearly as possible, an international consensus of opinion on the subjects dealt with. 3) They have the form of recommendations for international use published in the form of standards, technical reports or guides and they are accepted by the National Committees in that sense. 4
29、) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard s
30、hall be clearly indicated in the latter. The main task of IEC technical committees is to prepare International Standards. In exceptional circumstances, a technical committee may propose the publication of a technical report of one of the following types: type1, when the required support cannot be ob
31、tained for the publication of an International Standard, despite repeated efforts; type2, when the subject is still under technical development or where for any other reason there is the future but not immediate possibility of an agreement on an International Standard; type3, when a technical commit
32、tee has collected data of a different kind from that which is normally published as an International Standard, for example “state of the art”. Technical reports of types1 and2 are subject to review within three years of publication to decide whether they can be transformed into International Standar
33、ds. Technical reports of type3 do not necessarily have to be reviewed until the data they provide are considered to be no longer valid or useful. IEC 1000-2-5, which is a technical report of type2, has been prepared by sub-committee77B: High-frequency phenomena, of IEC technical committee77: Electro
34、magnetic compatibility. The text of this technical report is based on the following documents: Full information on the voting for the approval of this technical report can be found in the report on voting indicated in the above table. This document is issued in the type2 technical report series of p
35、ublications (according toG.4.2.2 of part1 of the IEC/ISO Directives) as a “prospective standard for provisional application” in the field of electromagnetic compatibility because there is an urgent requirement for guidance on how standards in this field should be used to meet an identified need. Com
36、mittee draft Report on voting 77B(SEC) 122 77B/142/RVCBS IEC 1000-2-5:1995 BSI 02-1999 v This document is not to be regarded as an “International Standard”. It is proposed for provisional application so that information and experience of its use in practice may be gathered. Comments on the content o
37、f this document should be sent to the IEC Central Office. A review of this type2 technical report will be carried out not later than three years after its publication, with the options of either extension for a further three years or conversion to an International Standard or withdrawal. Annex A,Ann
38、ex B andAnnex C are for information only.vi blankBSIEC 1000-2-5:1995 BSI 02-1999 1 1 General 1.1 Scope and object This section of IEC1000-2 is a technical report intended for guidance, not as a specification, for those who are in charge of writing immunity standards for an equipment or system. Its p
39、urpose is to classify electromagnetic environments and help improve the specification of the immunity requirements of an item containing electrical or electronic parts, and consequently obtain electromagnetic compatibility. It also gives basic guidance for the selection of immunity levels. The data
40、are applicable to any equipment, subsystem or system making use of electromagnetic energy and operating in a specific location as defined by this report. The environment inside transportation equipment (vehicles, traction, ships, aircraft) is not described in this report, but their effect on the sur
41、rounding environment is included. It should be noted that the immunity level requirements chosen for the items are not only inevitably bound to their environment, but also to the requirements of the applications (e.g. for reliability or safety purposes). That could lead to more stringent requirement
42、s than usual. These levels may also be established for more general purposes such as generic and product standards, taking into account statistical and economical aspects as well as common experiences in certain application fields. 1.2 Normative reference The following normative document contains pr
43、ovisions which, through reference in this text, constitute provisions of this section of IEC1000-2. At the time of publication, the edition indicated was valid. All normative documents are subject to revision and parties to agreements based on this section of IEC1000-2 are encouraged to investigate
44、the possibility of applying the most recent edition of the normative document indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 50(161):1990, International Electrotechnical Vocabulary (IEV) Chapter161: Electromagnetic compatibility. 1.3 Approa
45、ch Classification of the electromagnetic environment is based on the classification or a description of the electromagnetic phenomena prevailing at typical locations, not on existing test specifications. However, given a choice among equal possibilities, harmonization with existing test specificatio
46、ns (if appropriate) will simplify the situation and promote easier acceptance of the recommendations. The definition of electromagnetic environment in IEC50(161) makes reference to “electromagnetic phenomena”. The term disturbance degree is used in this report for quantifying the phenomena contribut
47、ing to the electromagnetic environment, independently of any consideration of test levels. The term “severity level” will not be used in this report to describe the environment, as it is reserved for specifying immunity test levels in other IEC publications. Thus, the concept and term of electromagn
48、etic phenomenon is the starting point for defining the environment and selecting disturbance degrees in a classification document. Clauses4, 5 and6 of this report are the first step of the process. Three basic categories of phenomena have been identified: low-frequency phenomena, high-frequency phen
49、omena and electrostatic discharge. In the first stage, attributes of the phenomena (amplitudes, waveforms, source impedance, frequency of occurrence,etc.) will be defined generically, and the expected range of disturbance degrees established. Then, in the second stage, ONE SINGLE value from that range has been identified as most representative for each phenomenon at a specific class of location and set forth as the compatibility level for that location class. The process is illustrated inFigure
