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Classification of power supply lightning protection level, which can be divided into 1-4 levels according to different equipment;
Class I: products tested with class I classification (10/350us), with a nominal discharge current of 40KA-80KA, used in the general distribution room.
Class II: products (8/20us) tested with class II classification, the nominal discharge current is generally 20KA-40KA, which is used for distribution cabinet.
Class III: the products of the class III classification test are installed in the room distribution box, and the nominal discharge current is 10KA-20KA.
Level IV: lightning protection devices installed at the front end of the equipment, such as lightning protection plug and signal, with a nominal discharge current of 5KA-10KA
