From Schaffner EMC Inc.
In the past, there had not been any standards laid down for the area of industrial machinery engineering; the result of this was that EMC filters at the mains input of machines were used only to a very limited extent.
So far, EMC filters were often viewed only in conjunction with the drive system of the machine i.e. frequency converters. The factor that was mainly counted upon was that the inverters used were either interference-suppressed internally, or were supplied with the corresponding drive filters.
Although that does basically ensure the electromagnetic compatibility of the drive, the question is whether all the relevant aspects of the machinery engineer are taken into consideration with this procedure.
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