IEC 61000-2-2:2002 pdf download

IEC 61000-2-2:2002 pdf download.Electromagnetic compatibility (EMC)- Part2-2: Environment- Compatibility levels for low- frequency conducted disturbances and signalling in public low-voltage power supply systems
1 Scope and object
This standard is concerned with conducted disturbances in the frequency range from 0 kHz to 9 kHz, with an extension up to 1 48,5 kHz specifically for mains signalling systems. It gives compatibility levels for public low voltage a.c. distribution systems having a nominal voltage up to 420 V, single-phase or 690 V, three-phase and a nominal frequency of 50 Hz or 60 Hz. The compatibility levels specified in this standard apply at the point of common coupling. At the power input terminals of equipment receiving its supply from the above systems the severity levels of the disturbances can, for the most part, be taken to be the same as the levels at the point of common coupling. In some situations this is not so, particularly in the case of a long line dedicated to the supply of a particular installation, or in the case of a disturbance generated or amplified within the installation of which the equipment forms a part. Compatibility levels are specified for electromagnetic disturbances of the types which can be expected in public low voltage power supply systems, for guidance in: – the limits to be set for disturbance emission into public power supply systems (including the planning levels defined in 3.1 .5). – 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 considered are: – voltage fluctuations and flicker; – harmonics up to and including order 50; – inter-harmonics up to the 50 th harmonic; – voltage distortions at higher frequencies (above the 50 th harmonic); – voltage dips and short supply interruptions; – voltage unbalance; – transient overvoltages; – power frequency variation; – d.c. components; – mains signalling. Most of these phenomena are described in IEC 61 000-2-1 . In cases where it is not yet possible to establish compatibility levels, some information is provided.
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 60050-1 01 , International Electrotechnical Vocabulary (IEV) – Part 101: Mathematics IEC 60050-1 61 , International Electrotechnical Vocabulary (IEV) – Part 161: Electromagnetic compatibility IEC 60664-1 , Insulation coordination for equipment within low-voltage systems – Part 1: Principles, requirements and tests IEC/TR3 61 000-2-1 , Electromagnetic compatibility (EMC) – Part 2: Environment – Section 1: Description of the environment – Electromagnetic environment for low-frequency conducted disturbances and signalling in public power supply systems IEC 61 000-3-3, Electromagnetic compatibility (EMC) – Part 3: Limits – Section 3: Limitation of voltage fluctuations and flicker in low-voltage supply systems for equipment with rated current ≤ 16 A IEC 61 000-4-7, Electromagnetic compatibility (EMC) – Part 4: Testing and measurement techniques – Section 7: General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto IEC 61 000-4-1 5, Electromagnetic compatibility (EMC) – Part 4: Testing and measurement techniques – Section 15: Flickermeter – Functional and design specifications
3 Definitions
For the purposes of this part of IEC 61 000, the definitions given in IEC 60050-1 01 , IEC 60050-1 61 and its amendments 1 and 2, as well as the following, apply. 3.1 General definitions 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 1 61 -01 -05, modified] 3.1 .2 disturbance level the amount or magnitude of an electromagnetic disturbance, measured and evaluated in a specified way [IEV 1 61 -03-01 , modified] 3.1 .3 electromagnetic compatibility EMC (abbreviation) the ability of an equipment or system to function satisfactorily in its electromagnetic environ- ment without introducing intolerable electromagnetic disturbances to anything in 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. 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 the 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 61 000-2-1 clause 4. NOTE 3 Where the context requires it, compatibility may 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 1 61 -01 -07, modified] 3.1 .4 (electromagnetic) compatibility level the 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 only a small probability that it will be exceeded by the actual disturbance level. [IEV 1 61 -03-1 0, modified]