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CURRENT STATE OF SURGE TESTING INDUCTION …
Iris Rotating machine Conference 1 of 13 June 2003, Santa Monica, CA CURRENT STATE OF SURGE TESTING INDUCTION MACHINES John Wilson Baker Instrument Company ABSTRACT SURGE TESTING of motor coils has been an industry practice since J. L. Rylander published A High Frequency Voltage Test for Insulation of Rotating Electrical Apparatus in Transactions of the AIEE, in February of 1926. Since that time the use of SURGE TESTING to diagnose failing or damaged insulation in motors has advanced greatly. In 1926, the indication of a turn-turn insulation failure was the drop of the coil voltage amplitude as determined by a vacuum tube rectifier circuit using an apparatus the size of a large work bench with rotating spark gaps for switches and large step up transformers to charge large high voltage capacitors.
Iris Rotating Machine Conference 1 of 13 June 2003, Santa Monica, CA CURRENT STATE OF SURGE TESTING INDUCTION MACHINES John …
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