IEC_61000-4-30.pdf

61000-4-30 IEC:2000 3 CONTENTS Pages FOREWORD.5 INTRODUCTION.7 Clause 1 Scope.9 2 Normative references.9 3 Definitions.11 4 General.15 4.1 Classes of performance.15 4.2 Electrical values to be measured.17 4.3 Measurement aggregation over time.17 4.4 Flagging concept.17 4.5 Measurement aggregation algorithm.19 5 Power quality parameters.19 5.1 Power frequency.19 5.2 Magnitude of the supply voltage.21 5.3 Flicker.23 5.4 Supply voltage dips and swells.23 5.5 Voltage interruptions.28 5.6 Transient overvoltages.28 5.7 Supply voltage unbalance.28 5.8 Voltage Harmonics.30 5.9 Voltage Interharmonics.32 5.10 Mains signalling voltage on the supply voltage.32 5.11 Rapid voltage changes.34 5.12 Other power quality parameters.34 6 Specified operating ranges and measurement accuracy.36 6.1 Specified operating ranges.36 6.2 Measurement Accuracy.38 A.1 Transient overvoltages.44 A.2 Rapid voltage changes.48 A.3 Current.48 A.4 Guidelines for contractual applications of power quality measurements.54 A.5 Troubleshooting applications.66 A.6 Statistical surveys applications.68 A.7 Installation precautions.70 A.8 Transducers.74 61000-4-30 IEC:2000 4 61000-4-30 IEC:2000 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTROMAGNETIC COMPATIBILITY(EMC)Part 4-30:Testing and Measurement Techniques-Power Quality Measurement Methods Basic EMC publication FOREWORD 1)The IEC(International Electrotechnical Commission)is a worldwide organization for standardization comprising all national electrotechnical committees(IEC National 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 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.The IEC collaborates closely with the International Organization 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 express,as nearly as possible,an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested National Committees.3)The documents produced have the form of recommendations for international use and are published in the form of standards,technical specifications,technical reports or guides and they are accepted by the National Committees in that sense.4)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 shall be clearly indicated in the latter.5)The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards.6)Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights.The IEC shall not be held responsible for identifying any or all such patent rights.International Standard IEC 61000-4-30 has been prepared by subcommittee 77A:Low frequency phenomena,of IEC technical committee 77:Electromagnetic compatibility.The text of this standard is based on the following documents:FDIS Report on voting XX/XX/FDIS XX/XX/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table.Annexes are for information only.61000-4-30 IEC:2000 6 61000-4-30 IEC:2000 7 INTRODUCTION This standard is part of the IEC 61000 series,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 Indicative values 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 Mitigation methods and devices Part 6:Generic Standards Part 9:Miscellaneous Each part is further subdivided into sections that are to be published either as international standards or as technical reports.61000-4-30 IEC:2000 8 61000-4-30 IEC:2000 9 1 Scope This section of IEC 61000-4 defines the methods for measurement and interpretation of results for power quality parameters in a.c.power supply systems.Measurement methods are described for each relevant type of parameter in terms that will make it po