| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an instrument for measuring a partial discharge starting voltage capable of detecting easily and surely an insulation condition between conductors in an electric apparatus, by measuring the partial discharge starting voltage. SOLUTION: In this method for measuring the partial discharge starting voltage, a repetition high-voltage pulse set with a voltage waveform and a voltage elevation rate is impressed onto a sample 2 in a container 1, a signal of partial discharge generated in the sample 2 is detected by a detector, an output from a voltage divider 5 in the same time is read out as the partial discharge starting voltage, and a high-voltage circuit is broken at the same time therewith, to repeat processing for interruption for a predetermined fixed time. COPYRIGHT: (C)2006,JPO&NCIPI
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