BS EN 61000-4-5-2006
Elektromagnetische Vertraeglichkeit (EMV). Pruef-und Messverfahren. Pruefung der Stoerfestigkeit gegen Stossspannungen Electromagnetic compatibility (EMC). Part 4-5:Testing and measurement techniques. Surge immunity test Compatiblite electromagnetique (CEM). Techniques d'essai et de mesure. Essai d'immunite aux ondes de choc
适用范围：This part of IEC 61000 relates to the immunity requirements, test methods, and range of recommended test levels for equipment to unidirectional surges caused by overvoltages from switching and lightning transients. Several test levels are defined which relate to different environment and installation conditions. These requirements are developed for and are applicable to electrical and electronic equipment.The object of this standard is to establish a common reference for evaluating the immunity of electrical and electronic equipment when subjected to surges. The test method documented in this part of IEC 61000 describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon.NOTE As described in IEC Guide 107, this is a basic EMC publication for use by product committees of the IEC.As also stated in Guide 107, the IEC product committees are responsible for determining whether this immunity test standard should be applied or not, and if applied, they are responsible for determining the appropriate test levels and performance criteria. TC 77 and its sub-committees are prepared to co-operate with product committees in the evaluation of the value of particular immunity tests for their products.This standard defines:– a range of test levels;– test equipment;– test setups;– test procedures.The task of the described laboratory test is to find the reaction of the EUT under specified operational conditions, to surge voltages caused by switching and lightning effects at certain threat levels.It is not intended to test the capability of the EUT's insulation to withstand high-voltage stress.Direct injections of lightning currents, i.e, direct lightning strikes, are not considered in this standard.
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