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POWER SUPPLY DEVICE FOR PARTIAL DISCHARGE PULSE TESTING, PARTIAL DISCHARGE PULSE TESTING METHOD, AND WINDING MACHINE WITH PARTIAL DISCHARGE PULSE TESTING FUNCTION
POWER SUPPLY DEVICE FOR PARTIAL DISCHARGE PULSE TESTING, PARTIAL DISCHARGE PULSE TESTING METHOD, AND WINDING MACHINE WITH PARTIAL DISCHARGE PULSE TESTING FUNCTION
PROBLEM TO BE SOLVED: To provide a power supply device for partial discharge pulse testing, a partial discharge pulse testing method, and a winding machine with a partial discharge pulse testing function, capable of detecting the presence or absence of partial discharge nondestructively, with high reliability, and without fail, even when the test time is short.;SOLUTION: A power supply device for partial discharge pulse testing used for detecting the presence or absence of partial discharge of a sample comprises a frequency variable sine wave oscillator which can vary the frequency continuously while keeping the voltage at a substantially constant level, and at the timing of power-on, enables phase control for sine waves.;COPYRIGHT: (C)2015,JPO&INPIT
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