1、 IEC 61000-3-11 Edition 2.0 2017-04 REDLINE VERSION Electromagnetic compatibility (EMC) Part 3-11: Limits Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems Equipment with rated current 75 A and subject to conditional connection IEC 61000-3-11:2017-0
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11、ion 2.0 2017-04 REDLINE VERSION Electromagnetic compatibility (EMC) Part 3-11: Limits Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems Equipment with rated current 75 A and subject to conditional connection INTERNATIONAL ELECTROTECHNICAL COMMISSION
12、 ICS 33.100.10 ISBN 978-2-8322-4252-0 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. colour inside 2 IEC 61000-3-11:2017 RLV IEC 2017 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope and object
13、 . 6 2 Normative references 6 3 Terms and definitions 7 4 Requirements 7 5 Limits 8 6 Test, measurement and evaluation procedures 9 6.1 Overview. 9 6.2 Test and measurement procedures . 10 6.2.1 Test impedance Z test10 6.2.2 Test of equipment against Z test. 10 6.2.3 Evaluation against Z ref10 6.3 E
14、valuation and declaration by the manufacturer of the maximum permissible system impedance 10 6.3.1 Comparison of calculated and measured emission values with Clause 5 limits to enable a declaration of compliance with IEC 61000-3-3 11 6.3.2 Calculation of the maximum permissible system impedance 11 6
15、.4 Evaluation and declaration by the manufacturer of the minimum permissible service current capacity 11 Annex A (informative) Explanation of flicker exponents 13 A.1 Overview. 13 A.2 Explanation of 6.2.2 Clause 6 . 13 Annex B (informative) Flow chart showing the evaluation and test procedures leadi
16、ng to the connection of equipment . 20 Bibliography 22 Figure A.1 Typical motor starting RMS voltage variation plot . 15 Figure A.2 Visualization of the relationship between items of equipment “n” and P st. 18 Figure A.3 Impedance requirements as a function of individual P stZrefvalues and penetrati
17、on level n 19 Figure B.1 Flow chart showing the evaluation and test procedures leading to the connection of equipment . 20 Figure B.2 Reference network for single- and three-phase supplies derived from a three-phase, four-wire supply 21 Table 1 Suffixes and their applications . 9 IEC 61000-3-11:2017
18、 RLV IEC 2017 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTROMAGNETIC COMPATIBILITY (EMC) Part 3-11: Limits Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems Equipment with rated current 75 A and subject to conditional connection FOREWORD 1) T
19、he 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 standardization in the electrical a
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28、f, 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 referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that som
29、e 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. DISCLAIMER This Redline version is not an official IEC Standard and is intended only to provide the user with an indication of what changes
30、have been made to the previous version. Only the current version of the standard is to be considered the official document. This Redline version provides you with a quick and easy way to compare all the changes between this standard and its previous edition. A vertical bar appears in the margin wher
31、ever a change has been made. Additions are in green text, deletions are in strikethrough red text. 4 IEC 61000-3-11:2017 RLV IEC 2017 International Standard IEC 61000-3-11 has been prepared by sub-committee 77A: EMC Low-frequency phenomena, of IEC technical committee 77: Electromagnetic compatibilit
32、y. This second edition cancels and replaces the first edition published in 2000. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) addition of a new Annex A which explains the limitations and effe
33、ctiveness of IEC 61000-3-11 regarding the connection of multiple items of similar equipment at the same location in the supply network. The text of this International Standard is based on the following documents: CDV Report on voting 77A/929/CDV 77A/947/RVC Full information on the voting for the app
34、roval of this International Standard can be found in the report on voting indicated in the above table. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 61000, published under the general title Electromagnetic compatibility (EMC), can b
35、e found on the IEC website. The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific document. At this date, the document will be reconfirmed, withdrawn,
36、replaced by a revised edition, or amended. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. IEC
37、 61000-3-11:2017 RLV IEC 2017 5 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
38、environment Compatibility levels Part 3: Limits Emission limits Immunity limits (in so far as they do not fall under the responsibility of product committees) Part 4: Testing and measurement techniques Measurement techniques Testing techniques Part 5: Installation and mitigation guidelines Installat
39、ion guidelines Mitigation methods and devices Part 9: Miscellaneous Each part is further subdivided into several parts published either as International Standards or technical reports, some of which have already been published as sections. Others will be published with the part number followed by a
40、dash and a second number identifying the subdivision (example: 61000-3-11). The scope of this part overlaps with that of IEC 61000-3-3 in that it is also applicable to equipment with a rated input current 16 A. However, it should be noted that equipment having a rated input current 16 A should first
41、 be tested for conformity with IEC 61000-3-3 before applying the evaluation techniques and measurement procedures specified in this part of IEC 61000. Equipment which meets the requirements of IEC 61000-3-3 is not subject to conditional connection and therefore it is not subject to this part of IEC
42、61000. 6 IEC 61000-3-11:2017 RLV IEC 2017 ELECTROMAGNETIC COMPATIBILITY (EMC) Part 3-11: Limits Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems Equipment with rated current 75 A and subject to conditional connection 1 Scope and object This part of
43、 IEC 61000 is concerned with the emission of voltage changes, voltage fluctuations and flicker produced by equipment and impressed on the public low-voltage supply system. It specifies the limits of voltage changes produced by equipment tested under specified conditions. This document is primarily a
44、pplicable to electrical and electronic equipment having a rated input current from 16 A up to and including 75 A, which is intended to be connected to public low-voltage distribution systems having nominal system voltages of between 220 V and 250 V, line-to-neutral at 50 Hz, and which is subject to
45、conditional connection. This document is also applicable to equipment within the scope of IEC 61000-3-3 that does not meet the limits when tested or evaluated with reference impedance Z refand is therefore subject to conditional connection. Equipment which meets the requirements of IEC 61000-3-3 is
46、excluded from this part of IEC 61000. Equipment tests made in accordance with this document are type tests. NOTE 1 The flicker limits specified in this document, being the same as those in IEC 61000-3-3, are based on the subjective severity of the flicker imposed on the light from 230 V/60 W coiled-
47、coil filament lamps when subjected to fluctuations of the supply voltage. For systems with nominal voltages less than 220 V, line-to-neutral and/or frequency of 60 Hz, the limits and reference circuit values are under consideration. NOTE 2 The limits in this document relate to the voltage changes ex
48、perienced by consumers connected at the interface between the public supply low-voltage network and the equipment users installation. Therefore, it cannot be guaranteed that the users of equipment compliant with this standard will not experience supply disturbance within their own installation due t
49、o the operation of this equipment alone, as the impedance at the point of connection of the equipment to the supply within the installation may can have an impedance greater than the test maximum permissible impedance as determined by the procedures in this document. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies
