have recently published standards IEC 61439, IEC 60439 lenorme ready to replace.
seems finally abandoned the distinction between TTA and ANS, constitute a basis for the standards now in place, we had, in the pages of the magazine's publisher Bema Electric Project, criticized many years ago, giving secodo our point of view fully justified.
The state of the art seems to change and appears to have discontinuities in its rules.
not it? These are the technical standards for the discontinuities?
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