Transcription of CURRENT STATE OF SURGE TESTING INDUCTION …
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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. Today s instrumentation uses high-speed digitizers to observe the entire waveform. Instead of a work bench, a 50lb portable enclosure contains the entire instrument which includes small high voltage power supplies, power semiconductors for switching elements, small efficient high voltage capacitors and a complete Pentium class computer with color display.
Iris Rotating Machine Conference 1 of 13 June 2003, Santa Monica, CA CURRENT STATE OF SURGE TESTING INDUCTION MACHINES John …
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Principles and Functions of Electrical Machines, THEORY, CONSTRUCTION, AND OPERATION, PRINCIPLES, Machines, Of electric, ELECTRIC INDUCTION, NIULPE PE 3rd Class R4 010108, Power, Safety Standards for Electronic Products, Electric, Basic Principles of Press Force Monitors, Motors, Of electric motors, Electricity)and)Magnetism, ELECTRICAL AND ELECTRONICS ENGINEERING, ELECTRICAL AND ELECTRONICS ENGINEERING UNIT 1: ENGINEERING MATHEMATICS