1、BRITISH STANDARD BS EN 61000-2-12:2003 Electromagnetic compatibility (EMC) Part 2-12: Environment Compatibility levels for low-frequency conducted disturbances and signalling in public medium-voltage power supply systems The European Standard EN 61000-2-12:2003 has the status of a British Standard I
2、CS 33.100.01 BS EN 61000-2-12:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 24 September 2003 BSI 24 September 2003 ISBN 0 580 42633 5 National foreword This British Standard is the official English language version of EN 61000-2-12:20
3、03. It is identical with IEC 61000-2-12:2003. The UK participation in its preparation was entrusted by Technical Committee GEL/210, EMC, to Subcommittee GEL/210/8, EMC Low frequency standards, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained o
4、n request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the
5、 BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enqu
6、irers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprise
7、s a front cover, an inside front cover, the EN title page, pages 2 to 28, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 61000-2-12
8、NORME EUROPENNE EUROPISCHE NORM July 2003 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2003 CENELEC - All rights of exploitat
9、ion in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61000-2-12:2003 E ICS 33.100.01 English version Electromagnetic compatibility (EMC) Part 2-12 : Environment Compatibility levels for low-frequency conducted disturbances and signalling in public medium-voltage power
10、 supply systems (IEC 61000-2-12:2003) Compatibilit lectromagntique (CEM) Partie 2-12: Environnement Niveaux de compatibilit pour les perturbations conduites basse frquence et la transmission des signaux sur les rseaux publics dalimentation moyenne tension (CEI 61000-2-12:2003) Elektromagnetische Ver
11、trglichkeit Teil 2-12: Umgebungsbedingungen - Vertrglichkeitspegel fr niederfrequente leitungsgefhrte Strgren und Signalbertragung in ffentlichen Mittelspannungsnetzen (IEC 61000-2-12:2003) This European Standard was approved by CENELEC on 2003-06-01. CENELEC members are bound to comply with the CEN
12、/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to
13、any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official v
14、ersions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EN 61000-
15、2-12:2003 - 2 - Foreword The text of document 77A/404/FDIS, future edition 1 of IEC 61000-2-12, prepared by SC 77A, Low frequency phenomena, of IEC TC 77, Electromagnetic compatibility, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61000-2-12 on 2003-06-01. The fol
16、lowing dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2004-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2006-06-01 Annexes designate
17、d “normative“ are part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annex ZA is normative and annexes A and B are informative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61000-
18、2-12:2003 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60038 NOTE Harmonized as HD 472 S1:1989 (modified). IEC 60868 NOTE Harmonized as HD 498 S1:1987 (not mod
19、ified). IEC 60868-0 NOTE Harmonized as EN 60868-0:1993 (not modified). IEC 61000-3-2 NOTE Harmonized as EN 61000-3-2:2000 (modified). IEC 61000-3-3 NOTE Harmonized as EN 61000-3-3:1995 (not modified). _ Page2 EN61000212:2003-00016-221 3002:CEI 3 CONTENTS INTRODUCTION.4 1 Scope and object5 2 Normativ
20、e references6 3 Terms and definitions .6 3.1 General definitions.6 3.2 Phenomena related definitions.7 4 Compatibility levels.9 4.1 General comment9 4.2 Voltage fluctuations and flicker 10 4.3 Harmonics.10 4.4 Interharmonics and voltage components at frequencies above that of the 50 thharmonic11 4.5
21、 Voltage dips and short supply interruptions 11 4.6 Voltage unbalance.12 4.7 Transient overvoltages.12 4.8 Temporary power frequency variation.12 4.9 DC component.12 4.10 Mains signalling.13 Annex A (informative) The function of compatibility levels and planning levels in EMC 15 A.1 The need for com
22、patibility levels 15 A.2 Relation between compatibility level and immunity levels15 A.3 Relation between compatibility level and emission limits.16 A.4 Planning levels 18 A.5 Illustration of compatibility, emission, immunity and planning levels18 Annex B (informative) Discussion of some disturbance
23、phenomena 20 B.1 Resolution of non-sinusoidal voltages and currents 20 B.2 Interharmonics and voltage components at frequencies above that of the 50 thharmonic .22 B.3 Voltage dips and short supply interruptions 25 B.4 Transient overvoltages.26 B.5 DC component.26 Annex ZA (normative) Normative refe
24、rences to international publications with their corresponding European publications27 Bibliography28 Page3 EN61000212:2003-00016-221 3002:CEI 4 INTRODUCTION IEC 61000 is published in separate parts according to the following structure: Part 1: General General considerations (introduction, fundamenta
25、l 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 the product committees) Part 4: Testing and measu
26、rement 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, published either as International Stan
27、dards 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). Detailed information on the various types of distur
28、bances that can be expected on public power supply systems can be found in IEC 61000-2-1. Page4 EN61000212:2003-00016-221 3002:CEI 5 ELECTROMAGNETIC COMPATIBILITY (EMC) Part 2-12: Environment Compatibility levels for low-frequency conducted disturbances and signalling in public medium-voltage power
29、supply systems 1 Scope and object This part of IEC 61000 is concerned with conducted disturbances in the frequency range from 0 kHz to 9 kHz, with an extension up to 148,5 kHz specifically for mains signalling systems. It gives compatibility levels for public medium voltage a.c. distribution systems
30、 having a nominal voltage between 1 kV and 35 kV and a nominal frequency of 50 Hz or 60 Hz (see IEC 60038). Compatibility levels are specified for electromagnetic disturbances of the types which can be expected in public medium voltage power supply systems, for guidance in: a) the limits to be set f
31、or disturbance emission into public power supply systems (including the planning levels defined in 3.1.5); b) the immunity limits to be set by product committees and others for the equipment exposed to the conducted disturbances present in public power supply systems. The disturbance phenomena consi
32、dered are: voltage fluctuations and flicker; harmonics up to and including order 50; inter-harmonics up to the 50 thharmonic; voltage distortions at higher frequencies (above 50 thharmonic); voltage dips and short supply interruptions; voltage unbalance; transient overvoltages; power frequency varia
33、tion; d.c. components; mains signalling. Most of these phenomena are described in IEC 61000-2-1. In cases where it is not yet possible to establish compatibility levels, some information is provided. The medium-voltage systems covered by this standard are public distribution systems supplying either
34、: a) private installations in which equipment is connected directly or through transformers, or b) substations feeding public low-voltage distribution systems. Page5 EN61000212:2003-00016-221 3002:CEI 6 The compatibility levels specified in this standard apply at the point of common coupling in the
35、case of (a) and at the medium-voltage terminals of the substation in the case of (b). See Clause 4. 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 late
36、st edition of the referenced document (including any amendments) applies. IEC 60071(all parts), Insulation co-ordination IEC 60071-1, Insulation co-ordination Part 1: Definitions, principles and rules IEC 61000-2-2, Electromagnetic compatibility (EMC) Part 2-2: Environment Compatibility levels for l
37、ow-frequency conducted disturbances and signalling in public low-voltage power supply systems IEC 61000-2-4, Electromagnetic compatibility (EMC) Part 2-4: Environment Compatibility levels in industrial plants for low-frequency conducted disturbances IEC 61000-4-7, Electromagnetic compatibility (EMC)
38、 Part 4-7: Testing and measurement techniques General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto 3 Terms and definitions For the purpose of this present document, the following definitions apply. 3.1 General defini
39、tions 3.1.1 (electromagnetic) disturbance any electromagnetic phenomenon which, by being present in the electromagnetic environment, can cause electrical equipment to depart from its intended performance IEV 161-01-05 modified 3.1.2 disturbance level the amount or magnitude of an electromagnetic dis
40、turbance, measured and evaluated in a specified way IEV 161-03-01 modified 3.1.3 electromagnetic compatibility EMC (abbreviation) ability of an equipment or system to function satisfactorily in its electromagnetic environment without introducing intolerable electromagnetic disturbances to anything i
41、n that environment NOTE 1 Electromagnetic compatibility is a condition of the electromagnetic environment such that, for every phenomenon, the disturbance emission level is sufficiently low and immunity levels are sufficiently high so that all devices, equipment and systems operate as intended. Page
42、6 EN61000212:2003-00016-221 3002:CEI 7 NOTE 2 Electromagnetic compatibility is achieved only if emission and immunity levels are controlled such that the immunity levels of the devices, equipment and systems at any location are not exceeded by the disturbance level at that location resulting from th
43、e cumulative emissions of all sources and other factors such as circuit impedances. Conventionally, compatibility is said to exist if the probability of the departure from intended performance is sufficiently low. See Clause 4 of IEC 61000-2-1. NOTE 3 Where the context requires it, compatibility may
44、 be understood to refer to a single disturbance or class of disturbances. NOTE 4 Electromagnetic compatibility is a term used also to describe the field of study of the adverse electromagnetic effects which devices, equipment and systems undergo from each other or from electromagnetic phenomena. IEV
45、 161-01-07 modified 3.1.4 (electromagnetic) compatibility level specified electromagnetic disturbance level used as a reference level in a specified environment for co-ordination in the setting of emission and immunity limits NOTE By convention, the compatibility level is chosen so that there is onl
46、y a small probability that it will be exceeded by the actual disturbance level. IEV 161-03-10 modified 3.1.5 planning level level of a particular disturbance in a particular environment, adopted as a reference value for the limits to be set for the emissions from large loads and installations, in or
47、der to co-ordinate those limits with all the limits adopted for equipment intended to be connected to the power supply system NOTE The planning level is locally specific, and is adopted by those responsible for planning and operating the power supply network in the relevant area. (For further inform
48、ation, see Annex A.) 3.1.6 point of common coupling PCC point on a public power supply network, electrically nearest to a particular load, at which other loads are, or could be, connected IEV 161-07-15 modified 3.2 Phenomena related definitions The definitions below that relate to harmonics are base
49、d on the analysis of system voltages or currents by the Discrete Fourier Transform method (DFT). This is the practical application of the Fourier transform as defined in IEV 101-13-09. See Annex B. NOTE The Fourier Transform of a function of time, whether periodic or non-periodic, is a function in the frequency domain and is referred to as the frequency spectrum o
