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 978-0-626-23139-2 SANS 61000-3-5:2009Edition 2 IEC/TS 61000-3-5:2009Edition 2SOUTH AFRICAN NATIONAL STANDARD Electromagnetic compatibility (EMC) Par
4、t 3-5: Limits Limitation of voltage fluctuations and flicker in low-voltage power supply systems for equipment with rated current greater than 75 A This national standard is the identical implementation of IEC/TS 61000-3-5:2009 and is adopted with the permission of the International Electrotechnical
5、 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 61000-3-5:2009 Edition 2 IEC/TS 61000-3-5:2009 Edition 2 Table of changes Change No. Date Scope National foreword This South
6、 African standard was approved by National Committee SABS TC 73, Electromagnetic compatibility, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in September 2009. This SANS document supersedes SANS 61
7、000-3-5:2006 (edition 1). IEC/TS 61000-3-5Edition 2.0 2009-07TECHNICAL SPECIFICATIONSPCIFICATION TECHNIQUEElectromagnetic compatibility (EMC) Part 3-5: Limits Limitation of voltage fluctuations and flicker in low-voltage power supply systems for equipment with rated current greater than 75 A Compati
8、bilit lectromagntique (CEM) Partie 3-5: Limites Limitation des fluctuations de tension et du flicker dans les rseaux basse tension pour les quipements ayant un courant appel suprieur 75 A INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE LICS 33.100.10 PRICE CODECO
9、DE PRIXISBN 2-8318-1051-1 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale SANS 61000-3-5:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 2 TS 61000-3-5 I
10、EC:2009 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references .6 3 Terms and definitions .6 4 Equipment assessment.6 4.1 General .6 4.2 Information from a consumer.7 4.3 Evaluation of equipment with a rated input current exceeding 75 A per phase .7 5 Recommended voltage change and flic
11、ker limits.7 5.1 Recommended voltage change limits.7 5.2 Recommended flicker limits.8 Annex A (informative) Questionnaire to facilitate an accurate evaluation of flicker emissions .9 Annex B (informative) Explanation of 4.3 .11 SANS 61000-3-5:2009This s tandard may only be used and printed by approv
12、ed subscription and freemailing clients of the SABS .TS 61000-3-5 IEC:2009 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTROMAGNETIC COMPATIBILITY (EMC) Part 3-5: Limits Limitation of voltage fluctuations and flicker in low-voltage power supply systems for equipment with rated current greater th
13、an 75 A FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide 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 standardizatio
14、n in the electrical and electronic fields. To this end and in addition to other 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 ent
15、rusted to technical committees; any IEC National Committee interested 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. IEC collaborates closely with the Inter
16、national Organization for Standardization (ISO) in accordance with conditions determined 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
17、each technical committee has representation from all interested IEC National Committees. 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
18、 IEC Publications is accurate, IEC cannot be held responsible for the way in which 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
19、their national and regional publications. Any divergence between any IEC Publication 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 dec
20、lared to be in conformity with an IEC Publication. 6) All users should ensure that 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 Nation
21、al Committees for any personal injury, property damage or other damage of any nature 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
22、drawn to the Normative references cited in this publication. Use of the referenced 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
23、not be held responsible for identifying any or all such patent rights. 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 specification when the required support cannot be obt
24、ained for the publication of an International Standard, despite repeated efforts, or the subject is still under technical development or where, for any other reason, there is the future but no immediate possibility of an agreement on an International Standard. Technical specifications are subject to
25、 review within three years of publication to decide whether they can be transformed into International Standards. IEC/TS 61000-3-5, which is a technical specification, has been prepared by subcommittee 77A: Low frequency phenomena of IEC technical committee 77: Electromagnetic compatibility. SANS 61
26、000-3-5:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 4 TS 61000-3-5 IEC:2009 This second edition cancels and replaces IEC 61000-3-5, published as Technical Report type 2 in 1994 and constitutes a technical revision. It includes the fo
27、llowing significant technical changes with respect to the previous edition: the whole document and the title have been modified to eliminate any conflict with the published IEC 61000-3-11. The text of this technical specification is based on the following documents: Enquiry draft Report on voting 77
28、A/681/DTS 77A/693/RVCFull information on the voting for the approval of this technical specification can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of
29、this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be transformed into an International standard, reconfirmed, withdrawn, replaced by
30、a revised edition, or amended. SANS 61000-3-5:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .TS 61000-3-5 IEC:2009 5 INTRODUCTION IEC 61000 is published in separate parts according to the following structure: Part 1: General General cons
31、iderations (introduction, fundamental principles) Definitions, terminology Part 2: Environment Description of the environment Classification of the environment Compatibility levels Part 3: Limits Emission limits Immunity limits (in so far as they do not fall under the responsibility of product commi
32、ttees) Part 4: Testing and measurement techniques Measurement techniques Testing techniques Part 5: Installation and mitigation guidelines Installation guidelines Mitigation methods and devices Part 6: Generic standards Part 9: Miscellaneous Each part is further subdivided into several parts publish
33、ed either as International Standards or as technical specifications or technical reports, some of which have already been published as sections. Others will be published with the part number followed by a dash and a second number identifying the subdivision (example: 61000-6-1). IEC/TS 61000-3-5 Thi
34、s Technical Specification is presented as an informative document as it is already a requirement, in most countries, for equipment having a rated input current exceeding 75 A per phase to be subject to assessment and connection by the public supply network operator. Therefore, it is not intended, at
35、 the time of publication, to be converted into an International Standard. SANS 61000-3-5:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 6 TS 61000-3-5 IEC:2009 ELECTROMAGNETIC COMPATIBILITY (EMC) Part 3-5: Limits Limitation of voltage f
36、luctuations and flicker in low-voltage power supply systems for equipment with rated current greater than 75 A 1 Scope This part of IEC 61000 deals with emission of disturbances due to voltage fluctuations and flicker. The recommendations in this Technical Specification are applicable to electrical
37、and electronic equipment that has a rated input current exceeding 75 A per phase and is intended to be connected to a public low-voltage a.c. distribution system. Recommendations that specify information enabling a supply authority, manufacturer, or consumer to assess equipment are given in Annex A.
38、 2 Normative references 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), Internati
39、onal Electrotechnical Vocabulary Chapter 161: Electromagnetic compatibility IEC 61000-3-2, Electromagnetic compatibility (EMC) Part 3-2: Limits Limits for harmonic current emissions (equipment input current 16 A per phase) IEC 61000-3-3, Electromagnetic compatibility (EMC) Part 3-3: Limits Limitatio
40、n of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current 16 A per phase and not subject to conditional connection IEC 61000-3-11:2000, Electromagnetic compatibility (EMC) Part 3-11: Limits Limitation of voltage changes, voltage flu
41、ctuations and flicker in public low-voltage supply systems -Equipment with rated current 75 A and subject to conditional connection 3 Terms and definitions For the purposes of this document the terms and definitions of IEC 61000-3-2, IEC 61000-3-3, IEC 61000-3-11 and IEC 60050(161) apply. 4 Equipmen
42、t assessment 4.1 General Methods of flicker assessment for different types of voltage fluctuations are described in IEC 61000-3-3 and IEC 61000-3-11. SANS 61000-3-5:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .TS 61000-3-5 IEC:2009 7 I
43、t is recommended that the disturbance levels present in the electricity supply are measured before and after the connection of a new load which is critical in any respect. The assessment method and data used should be verified. An item of equipment having a rated input-current exceeding 75 A per pha
44、se, should comply with the limits for all relevant phase-to-neutral voltages given in Clause 5. 4.2 Information from a consumer When a consumer enquires about connection of a major load to a low voltage public supply network he should, on request, provide information to enable assessment of the poss
45、ible disturbances caused by the load, otherwise connection may be refused. The basic information to facilitate the assessment of equipment is recommended in the questionnaire contained in Annex A. This questionnaire should be completed by the user, or his authorized installation engineer, when conne
46、ctions of electrical loads to low-voltage public power supply networks require special authorization. The completed questionnaire should be given to the electricity supplier well in advance of purchase and installation of the equipment to be connected. 4.3 Evaluation of equipment with a rated input
47、current exceeding 75 A per phase For equipment with a rated input current exceeding 75 A, a detailed system study is recommended in order to facilitate conditional connection. The equipment should be evaluated against the actual system impedance. It is recommended that IEC 61000-3-3 and IEC 61000-3-
48、11 voltage change limits for dmaxand dc, given in Clause 5, are applied. 5 Recommended voltage change and flicker limits 5.1 Recommended voltage change limits The following limits are recommended to be applicable to equipment having ratings greater than 75 A per phase: the relative steady state volt
49、age change, dc, should not exceed 3,3 %; the maximum relative voltage change, dmax, should not exceed a) 4 % without additional conditions; b) 6 % for equipment with automatic switching more than twice per day and that has a delayed restart (the order of magnitude of the delay being of a few minutes) or that has manual restart after power supply interruption; NOTE The cycling frequency is further limited by the Pstand Pltlimit. For example: a dmaxof 6 % with rectangular voltage
