61000-4-27 AMD 1-2009 AMENDMENT 1 Electromagnetic compatibility (EMC) – Part 4-27: Testing and measurement techniques – Unbalance@ immunity test for equipment with input current not exceeding 16 A per phase (Edition 1.0)
AMENDEMENT 1 Compatibilité électromagnétique (CEM) – Partie 4-27: Techniques d’essai et de mesure – Essai d’immunité aux déséquilibres pour des matériels avec un courant appelé n’excédant pas 16 A par phase (Edition 1.0)
AMENDMENT 1 Electromagnetic compatibility (EMC) – Part 4-27: Testing and measurement techniques – Unbalance@ immunity test for equipment with input current not exceeding 16 A per phase (Edition 1.0) 是非强制性国家标准，您可以免费下载前三页
This part of IEC 61000 is a basic EMC (electromagnetic compatibility) publication. It considers immunity tests for electric and/or electronic equipment (apparatus and system) in its electromagnetic environment. Only conducted phenomena are considered@ including immunity tests for equipment connected to public and industrial networks. The object of this standard is to establish a reference for evaluating the immunity of electrical and electronic equipment when subjected to unbalanced power supply voltage. This standard applies to 50 Hz/60 Hz three-phase powered electrical and/or electronic equipment with rated line current up to 16 A per phase.This standard does not apply to equipment with three-phase plus neutral connection if that equipment operates as a group of single-phase loads connected between phase and neutral. This standard does not apply to electrical and/or electronic equipment connected to a.c. 400 Hz distribution networks. This standard does not include tests for the zero-sequence unbalance factor. The immunity test levels required for a specific electromagnetic environment together with performance criteria are indicated in the product@ product family or generic standards as applicable. This immunity test should be included in product@ product family or generic standards when equipment is likely to show reduced performance or function when exposed to a supply voltage with voltage unbalance. The verification of the reliability of electrical components (capacitors@ motors@ etc.) and longterm effects (greater than a few minutes) is not considered in this standard.?