1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22806-4 SANS 61000-4-28:2009Edition 1.2IEC 61000-4-28:2009Edition 1.2SOUTH AFRICAN NATIONAL STANDARD Electromagnetic compatibility (EMC) P
4、art 4-28: Testing and measurement techniques Variation of power frequency, immunity test for equipment with input urrent not exceeding 16 A per phase cThis national standard is the identical implementation of IEC 61000-4-28:2009 and is adopted with the permission of the International Electrotechnica
5、l Commission. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 61000-4-28:2009 Edition 1.2 IEC 61000-4-28:2009 Edition 1.2 Table of changes Change No. Date Scope IEC amdt 1 2001 Amended
6、to replace 8.1 Climatic conditions with a new clause in which reference to IEC 60068-1 has been removed, to replace clause 9 Test results and test report with a new clauseEvaluation of test results, and to add a new clause 10 Test report. IEC amdt 2 2009 Amended to change the title, and to replace a
7、nd add new text, and a figure 4 relating to the verification of the characteristics of the test generators. National foreword This South African standard was approved by National Committee SABS TC 73, Electromagnetic compatibility, in accordance with procedures of the SABS Standards Division, in com
8、pliance with annex 3 of the WTO/TBT agreement. This SANS document was published in July 2009. This SANS document supersedes SANS 61000-4-28:2005 (edition 1.1). IEC 61000-4-28Edition 1.2 2009-04INTERNATIONAL STANDARD NORME INTERNATIONALEElectromagnetic compatibility (EMC) Part 4-28: Testing and measu
9、rement techniques Variation of power frequency, immunity test for equipment with input current not exceeding 16 A per phase Compatibilit lectromagntique (CEM) Partie 4-28: Techniques dessai et de mesure Essai dimmunit la variation de la frquence dalimentation pour des matriels avec un courant appel
10、nexcdant pas 16 A par phase INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE CCICS 33.100.20 PRICE CODECODE PRIXISBN 2-8318-1034-8BASIC EMC PUBLICATION PUBLICATION FONDAMENTALE EN CEM Registered trademark of the International Electrotechnical Commission Marque dpo
11、se de la Commission Electrotechnique Internationale SANS 61000-4-28:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 2 61000-4-28 IEC:1999+A1:2001 +A2:2009 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references6 3 General 7 4
12、 Definitions 7 5 Test levels7 6 Test equipment.8 6.1 Test generators: characteristics and performances 8 6.2 Verification of the characteristics .9 7 Test set-up .10 8 Test procedure .10 8.1 Climatic conditions.10 8.2 Execution of the test 10 9 Evaluation of test results.11 10 Test report11 Annex A
13、(informative) Sources and effects of variation of the power frequency .14 Annex B (informative) Electromagnetic environment classes.15 Figure 1 Frequency variation sequence 12 Figure 2 Example of transitional period tp.12 Figure 3 Schema of test instrumentation with power amplifier .13 Figure 4 Exam
14、ple of test generator verification load9 Table 1 Test levels for frequency variations 8 Table 2 Characteristics of the generator .8 SANS 61000-4-28:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .61000-4-28 IEC:1999+A1:2001 3 +A2:2009 INT
15、ERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTROMAGNETIC COMPATIBILITY (EMC) Part 4-28: Testing and measurement techniques Variation of power frequency, immunity test for equipment with input current not exceeding 16 A per phase FOREWORD 1) The International Electrotechnical Commission (IEC) is a wo
16、rldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of 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
17、 activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the su
18、bject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions d
19、etermined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Co
20、mmittees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in wh
21、ich they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Public
22、ation and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure t
23、hat they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any n
24、ature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referen
25、ced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. Internat
26、ional Standard IEC 61000-4-28 has been prepared by subcommittee 77A: Low-frequency phenomena, of IEC technical committee 77: Electromagnetic compatibility. This standard forms part 4-28 of the IEC 61000 series. It has the status of a basic EMC publication in accordance with IEC Guide 107. This conso
27、lidated version of IEC 61000-4-28 consists of the first edition (1999) 77A/287/FDIS and 77A/299/RVD, its amendment 1 (2001) 77B/291+293/FDIS and 77B/298+300/RVD and its amendment 2 (2009) 77A/673/FDIS and 77A/676/RVD. The technical content is therefore identical to the base edition and its amendment
28、s and has been prepared for user convenience. It bears the edition number 1.2. SANS 61000-4-28:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 4 61000-4-28 IEC:1999+A1:2001 +A2:2009 A vertical line in the margin shows where the base publ
29、ication has been modified by amendments 1 and 2. Annexes A and B are for information only. The committee has decided that the contents of the base publication and its amendments will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the
30、 data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. SANS 61000-4-28:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .61000-4-28 IEC:1999+A1:200
31、1 5 +A2:2009 INTRODUCTION IEC 61000 is published in separate parts according to the following structure: Part 1: General General considerations (introduction, fundamental principles) Definitions, terminology Part 2: Environment Description of the environment Classification of the environment Compati
32、bility levels Part 3: Limits Emission limits Immunity limits (in so far as they do not fall under the responsibility of the product committees) Part 4: Testing and measurement techniques Measurement techniques Testing techniques Part 5: Installation and mitigation guidelines Installation guidelines
33、Mitigation methods and devices Part 6: Generic standards Part 9: Miscellaneous Each part is further subdivided into several parts, published either as International Standard, technical specifications or technical reports, some of which have already been published as sections. Others will be publishe
34、d with the part number followed by a dash and completed by a second number identifying the subdivision. SANS 61000-4-28:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 6 61000-4-28 IEC:1999+A1:2001 +A2:2009 ELECTROMAGNETIC COMPATIBILITY
35、(EMC) Part 4-28: Testing and measurement techniques Variation of power frequency, immunity test for equipment with input current not exceeding 16 A per phase 1 Scope This part of IEC 61000 is a basic EMC (electromagnetic compatibility) publication. It considers immunity tests for electric and/or ele
36、ctronic equipment in its electromagnetic environment. Only conducted phenomena are considered, including immunity tests for equipment connected to public and industrial networks. The object of this part is to establish a reference for evaluating the immunity of electric and electronic equipment when
37、 subjected to variations of the power frequency. This standard applies to electric and/or electronic equipment connected to 50 Hz or 60 Hz distributed network with rated line current up to 16 A per phase. It does not apply to electric and/or electronic equipment connected to a.c. 400 Hz distribution
38、 networks. Tests concerning these networks will be covered by other IEC standards. In general, electrical and electronic equipment is not susceptible to minor variations of the power frequency. Testing according to this standard should be limited to products which are assessed to be susceptible to p
39、ower frequency variations by virtue of design, environment or failure consequences. The immunity test levels required for a specific electromagnetic environment together with the performance criteria are indicated in the product, product family or generic standards as applicable. 2 Normative referen
40、ces 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. IEC 60050(161), International Electrotechnica
41、l Vocabulary (IEV) Chapter 161 Electro-magnetic compatibility IEC 60068-1, Environmental testing Part 1: General and guidance IEC 61000-2-4, Electromagnetic compatibility (EMC) Part 2: Environment Section 4: Com-patibility levels in industrial plants for low-frequency conducted disturbances SANS 610
42、00-4-28:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .61000-4-28 IEC:1999+A1:2001 7 +A2:2009 3 General The purpose of the test is to investigate effects of power frequency variations on equipment which may be sensitive to this disturban
43、ce. The effects are generally instantaneous. Electrical and electronic equipment may be affected by variations of the power frequency. The frequency of a.c. power derived from public systems is directly related to the rotational speed of the generators, as is the frequency of a.c. power derived from
44、 an alternator which is separate from the public network. The frequency depends at any instant on the dynamic balance between the loads and the capacity of the generating plants. Consequently, as this dynamic balance changes, small changes in frequency will occur. The size and duration of these chan
45、ges depends on the characteristics of the load changes and response of the generating plant to the load changes. Where the supply is derived from an independent inverter, the frequency may be derived from the control circuitry and is then fixed. The frequency of public systems is, under normal condi
46、tions, generally declared by the supplier in terms of a nominal value (50 Hz or 60 Hz) with a small bandwidth within which these changes in frequency will normally be limited. However, in non-interconnected systems (small networks isolated like islands), variations of frequency are likely to be grea
47、ter and consequently more important. Frequency variations can affect control systems referring to time (measurement errors, loss of synchronization, etc.); equipment including passive filter (de-tuned). 4 Definitions For the purposes of this part of IEC 61000, the following definitions and terms app
48、ly as well as the definitions of IEC 60050(161). 4.1 immunity ability of a device, equipment or system to perform without degradation in the presence of an electromagnetic disturbance IEV 161-01-20 4.2 malfunction termination of the ability of an equipment to carry out intended functions or the exec
49、ution of unintended functions by the equipment 5 Test levels The test is performed at nominal mains voltage. The equipment under test (EUT) is initially in operation at a mains frequency f1 and is then subjected to frequency variation sequence according to figure 1. f/f1 is specified as a percentage of nominal frequency f1. SANS 61000-4-28:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 8 61000-4-
