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As NZS 61000.3.3-2006 Electromagnetic Compatibility (EMC) Limits - Limitation of Voltage Changes Voltage Fluc | International Electrotechnical Commission | Electromagnetic Compatibility
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Avoiding Electric Shock During PQ Analysis
AS/NZS 61000.3.
Electromagnetic compatibility (EMC) Part 3.3: LimitsLimitation 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 61000-3-3, Ed. 1.2(2005) MOD)
AS/NZS 61000.3.3:2006 This Joint Australian/New Zealand Standard was prepared by Joint Technical Committee EL-034, Power Quality. It was approved on behalf of the Council of Standards Australia on 27 June 2006 and on behalf of the Council of Standards New Zealand on 23 June 2006. This Standard was published on 25 August 2006.
The following are represented on Committee EL-034: Australian Chamber of Commerce and Industry Australian Electrical and Electronic Manufacturers Association Australian Energy Market Commission Australian Information Industry Association Bureau of Steel Manufacturers of Australia Consumers Federation of Australia Electrical Regulatory Authorities Council Electricity Engineers Association (New Zealand) Energy Networks Association Engineers Australia Ministry of Economic Development (New Zealand) National Measurement Institute New Zealand Coordinating Committee on Power & Telecommunication Systems Telstra Corporation University of Canterbury New Zealand University of Wollongong
This Standard was issued in draft form for comment as DR 06160.
Originated in Australia as AS 2279.31985. Jointly revised and redesignated as AS/NZS 61000.3.3:1998. Previous edition AS/NZS 61000.3.3:2003. Third edition 2006.
ISBN 0 7337 7676 0
This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee EL-034, Power Quality, to supersede AS/NZS 61000.3.3:2003. The objective of this Standard is to provide manufacturers and suppliers of electricity, and users of electrical equipment intended for connection to an electrical network, with limits for voltage fluctuations and flicker produced by that equipment and the methods for ascertaining compliance to them in order to maintain electromagnetic compatibility within the electrical network. This Standard is an adoption with national modifications and has been reproduced from IEC 61000-3-3, Ed. 1.2 (2005), Electromagnetic compatibility (EMC) Part 3-3: Limits Limitation 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, and has been varied as indicated to take account of Australian/New Zealand conditions. Variations to IEC 61000-3-3, Ed. 1.2 (2005) are indicated at the appropriate places throughout this standard. Strikethrough (example) identifies IEC text, tables and figures which, for the purposes of this Australian/New Zealand Standard, are deleted. Where text, tables or figures are added, each is set in its proper place and identified by shading (example). Added figures are not themselves shaded, but are identified by a shaded border. As this Standard is reproduced from an International Standard, the following applies: (a) (b) (c) Its number does not appear on each page of text and its identity is shown only on the cover and title page. In the source text IEC 61000-3-3 should read AS/NZS 61000.3.3. A full point should be substituted for a comma when referring to a decimal marker.
Page Introduction ........................................................................................................................... iv 1 2 3 4 Scope .............................................................................................................................. 1 Normative references ....................................................................................................... 1 Definitions........................................................................................................................ 2 Assessment of voltage changes, voltage fluctuations and flicker ...................................... 4 4.1 4.2 4.3
Assessment of a relative voltage change, "d" .......................................................... 4 Assessment of the short-term flicker value, P st ....................................................... 4 Assessment of long-term flicker value, P lt ............................................................... 6
Limits ............................................................................................................................... 6 Test conditions................................................................................................................. 7
6.1 General................................................................................................................... 7 6.2 Measurement accuracy ........................................................................................... 7 6.3 Test supply voltage ................................................................................................. 8 6.4 Reference impedance ............................................................................................. 8 6.5 Observation period.................................................................................................. 8 6.6 General test conditions ........................................................................................... 8 Annex A (normative) Application of limits and type test conditions for specific equipment ...................................................................................................................... 13 Annex B (normative) Test conditions and procedures for measuring d max voltage changes caused by manual switching............................................................................ 20
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 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 Installation guidelines Mitigation methods and devices Part 9: Miscellaneous Each part is further subdivided into sections which are to be published either as International Standards or as Technical Reports. These standards and reports will be published in chronological order and numbered accordingly. This part is a Product Family Standard. The limits in this standard relate to the voltage changes experienced by consumers connected at the interface between the public supply low-voltage network and the equipment users installation. Consequently, if the actual impedance of the supply at the supply terminals of equipment connected within the equipment users installation exceeds the test impedance, it is possible that supply disturbance exceeding the limits may occur.
1 STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND Australian/New Zealand Standard Electromagnetic compatibility (EMC) Part 3.3: LimitsLimitation 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 61000-3-3, Ed. 1.2(2005) MOD)
This part of IEC 61000 is concerned with the limitation of voltage fluctuations and flicker impressed on the public low-voltage system. It specifies limits of voltage changes which may be produced by an equipment tested under specified conditions and gives guidance on methods of assessment. This part of IEC 61000 is applicable to electrical and electronic equipment having an input current equal to or less than 16 A per phase, intended to be connected to public low-voltage distribution systems of between 220 V and 250 V line to neutral at 50 Hz , and not subject to conditional connection. Equipment which does not comply with the limits of this part of IEC 61000 when tested with the reference impedance Z ref of 6.4, and which therefore cannot be declared compliant with this part, may be retested or evaluated to show conformity with IEC 61000-3-11. Part 3-11 is applicable to equipment with rated input current 75 A per phase and subject to conditional connection. The tests according to this part are type tests. Particular test conditions are given in annex A and the test circuit is shown in figure 1.
NOTE The limits in this part of IEC 61000 are based mainly on the subjective severity of flicker imposed on the light from 230 V/60 W coiled-coil filament lamps by fluctuations of the supply voltage. For systems with nominal voltage less than 220 V line to neutral and/or frequency of 60 Hz , the limits and reference circuit values are under consideration.
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. References to international standards that are struck through in this clause are replaced by references to Australian or Australian/New Zealand Standards that are listed immediately thereafter and identified by shading. Any Australian or Australian/New Zealand Standard that is identical to the International Standard it replaces is identified as such. IEC 60050(161):1990, International Electrotechnical Vocabulary (IEV) Chapter 161: Electromagnetic compatibility IEC 60335-2-11:1993, Safety of household and similar electrical appliances Part 2: Particular requirements for tumbler dryers AS/NZS 60335.2.11, Household and similar electrical requirementsParticular requirements for tumble dryers
appliancesSafetyParticular
AS/NZS 61000.3.3:2006, Electromagnetic compatibility (EMC) Limits - Limitation 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 61000-3-3, Ed. 1.2(2005) MOD)
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