Induction machine power connection box including power supply for auxiliary devices including auxiliary cooling fans
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United States of America Patent
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Aug 16, 2016
Grant Date -
Nov 15, 2012
app pub date -
May 11, 2011
filing date -
May 11, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An alternating current (AC) induction machine, such as a medium voltage induction motor, includes an auxiliary electrical connection box that is incorporated in the terminal box or within separate auxiliary electrical connection boxes that, are coupled to the machine's incoming power source. The box includes power conversion transformers or bridges that respectively convert the incoming AC power to other AC voltages or direct current (DC) useful for operating auxiliary devices proximal the machine. The connection box avoids the need to run separate power lines to induction machines necessary for operating auxiliary devices. Exemplary auxiliary devices include external auxiliary AC powered cooling fans for medium voltage AC motors. The auxiliary connection box may reconfigurable in the field and/or be pre-configured to provide one or more common auxiliary device output power sources.
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