Transcription of Starting Methods for Large Medium Voltage Motors
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Starting Methods for Large Medium Voltage Motors Powell Industries, Inc. PO Box 12818 Houston, TX 77217 2005 Powell Industries, Inc. All rights reserved. Tel: Fax: February 9, 1996 Most ac Motors , both synchronous and induction, are started "across the line"; that is, the Starting contactor or circuit breaker connects the 3-phase motor winding directly to the 3-phase power supply. However, when Motors are Large with respect to the capacity of the power system it is often necessary to use a Starting method that reduces the impact on the power system caused by Starting the Large motor .
Most ac motors, both synchronous and induction, are started "across the line"; that is, the starting contactor or circuit breaker connects the 3-phase motor winding directly to the 3-phase power supply.
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