| 摘要 |
<p>PURPOSE:To obtain an abnormality detecting apparatus which detects the partial discharging generated with the abnormality of the stator winding of a rotary electric machine highly sensitively and highly accurately and can monitor abnormality all the time. CONSTITUTION:A plurality of reflector antennas 14 and 15 are arranged in the circumferential direction at positions facing the cross-sectional surfaces of the parts which are protruding outward from the end part of a fixed stator core 2 at the end part of a stator winding at the inner wall surface of a stator frame 11 of a rotary electric machine 10. The detected signals of the antennas are inputted into an abnormality detector 20 comprising an amplifier circuit, a filter circuit, a discharge detecting and operating circuit, an abnormality judging circuit and a display circuit.</p> |
