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The article discusses the basic requirements for the distribution bay of a MV switchgear of an explosion-proof structure for application in explosive atmospheres. It shows a typical construction of such the switchgear bay and presents the extent of the required tests with examples of selected investigated results.
The paper presents the investigated results of performance of power transformers when used for converters supply of DC drive of hosting machines. Particular attention was paid on the power loss due to deformed current and voltage waveforms. The active and reactive power losses were compared for the newly employed transformer to this working more that 16 years. On the basis of the measurements the...
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