IEC 61000-3-12-ed.2.1+Amd.1-CSV

Annotation of standard text IEC 61000-3-12-ed.2.1+Amd.1-CSV :

IEC 61000-3-12:2011+A1:2021 deals with the limitation of harmonic currents injected into the public supply system. The limits given in this International Standard are applicable to electrical and electronic equipment with a rated input current exceeding 16 A and up to and including 75 A per phase, intended to be connected to public low-voltage a.c. distribution systems of the following types: - nominal voltage up to 240 V, single-phase, two or three wires; - nominal voltage up to 690 V, three-phase, three or four wires; - nominal frequency 50 Hz or 60 Hz. Other distribution systems are excluded. The limits given in this edition apply to equipment when connected to 230/400 V, 50 Hz systems. This standard applies to equipment intended to be connected to low-voltage systems interfacing with the public supply at the low-voltage level. It does not apply to equipment intended to be connected only to private low-voltage systems interfacing with the public supply only at the medium- or high-voltage level. This standard defines: a) requirements and emission limits for equipment; b) methods for type tests and simulations. Tests according to this International Standard are type tests of complete pieces of equipment. Conformity with this standard can also be determined by validated simulations. This second edition cancels and replaces the first edition published in 2004 and constitutes a technical revision. The significant technical changes with respect to the previous edition are: - the replacement of the reference fundamental current I1 by the reference current Iref for the calculation of emission limits; - a new added table of current emission limits (Table 5); - a new added annex (Annex A) to define test conditions for some types of equipment; - Deletion of the former Annexes B (Approximate interpolation formulas) and D (Information on the PWHD factor). LIEC 61000-3-12:2011 traite de la limitation des courants harmoniques injectes dans le reseau public dalimentation. Les limites definies dans la presente Norme internationale sont applicables aux appareils electriques et electroniques ayant un courant assigne dentree strictement superieur a 16 A et inferieur ou egal a 75 A par phase, destines a etre connectes aux reseaux publics de distribution en courant alternatif basse tension des types suivants: - tension nominale jusqua 240 V, monophase, deux ou trois conducteurs; - tension nominale jusqua 690 V, triphase, trois ou quatre conducteurs; - frequence nominale 50 Hz ou 60 Hz. Les autres reseaux de distribution sont exclus. Les limites definies dans la presente edition sappliquent aux appareils connectes aux reseaux 230/400 V, 50 Hz. La presente norme sapplique aux appareils destines a etre raccordes a des reseaux basse tension connectes au reseau public dalimentation au niveau basse tension. Elle ne sapplique pas aux appareils destines a etre raccordes uniquement a des reseaux basse tension prives connectes au reseau public dalimentation seulement au niveau moyenne ou haute tension. Cette norme definit: - les exigences et limites demissions pour les appareils; - les methodes dessai de type et de simulation. Les essais realises conformement a la presente Norme internationale sont des essais de type sur des equipements complets. La conformite a la presente norme peut egalement etre determinee au moyen de simulations validees. Cette deuxieme edition annule et remplace la premiere edition publiee en 2004 et constitue une revision technique. Les principaux changements techniques par rapport a ledition precedente sont les suivants: - remplacement du courant fondamental de reference I1 par le courant de reference Iref pour le calcul des limites demission; - ajout dun nouveau tableau de limites de courant demission (Tableau 5); - ajout dune nouvelle annexe (Annexe A) definissant les conditions dessai pour certains types de materiels; - suppression des anciennes Annexes B (Formules dinterpolation approximatives) and D (Informations sur le facteur PWHD).