Haefely FP-COMB 32 Coupling/Decoupling Network

Get the Standard IEC 61000-4-5 details the immunity requirements, test methods, and range of recommended test levels for equipment subjected to unidirectional surges caused by overvoltages from switching and lightning transients. Several test levels are defined which relate to various environmental and installation conditions. IEC 61000-4-5 is designed for 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. IEC 61000-4-5 describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon. 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. It has the status of a basic EMC publication in accordance with IEC Guide 107. View more information provided by IEC.   Surge Background Surges occur on the AC power mains as a result of switching operations in the power grid and from nearby lightning strikes, either directly to the power distribution system or to nearby ground. Radiated coupling of surges into I/O lines generally occurs only when the lines are very long. Electronic products are tested for surge immunity to ensure their continued reliable operation if subjected to realistic levels of surge voltages. The European Union’s EMC Directive currently mandates Surge testing for some products; however, it is expected that virtually all electrical and electronic products will have to be tested for