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16 мая 2009 г.
Schneider Electric - Electrical installation guide 2008 The term "medium voltage" is commonly used for distribution systems with voltages above 1 kV and generally applied up to and including 52 kV (see IEC 601-01-28 Standard). In this chapter, distribution networks which operate at voltages of 1,000 V or less are referred to as Low-Voltage systems, while systems of power distribution which require one stage of stepdown voltage transformation, in...