Electrical switch for testing a gear system, in particular of a wind energy array

摘要

Electric switch (50) comprises a constant voltage bar (55) to which is applied a direct voltage and an inverted rectifier (67a, 67b, 67c, 67d) connected to the bar. The inverted rectifier is coupled with a generator (62) to produce a changing alternating voltage. Preferred Features: The inverted rectifier is coupled to the generator via a transformer (65). The generator is connected to a filter switch (66).