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Determining the suitability of a medium-voltage motor which will be installed within a hazardous location as outlined in IEEE 1349, powered by a multilevel, voltage source, adjustable speed drive that is not isolated by a phase-shifting transformer requires two key items to be investigated: thermal heating due to the current harmonics, and the energy contained in uncontrolled sparking from the motor...
Determining the suitability of a medium-voltage motor which will be installed within a hazardous location as outlined in IEEE 1349, powered by a multi-level, voltage source, adjustable speed drive that is not isolated by a phase-shifting transformer requires two key items to be investigated — thermal heating due to the current harmonics, and the energy contained in uncontrolled sparking from the motor...
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