| 摘要 |
<p>PURPOSE:To enable the detection of abnormality in a wide range with one detector, by specifying the tuning center frequency of a partial discharge pulse detector. CONSTITUTION:Spacers 2a and 2b supporting a high voltage conductor 1 have metal flanges 6a and 6b grasped between franges 5a and 5b and 5b and 5c of ground metal containers 4a, 4b and 4c while an insulating material 7a is set between the flanges 5a and 5b and an insulating material 7b between the franges 5b and 5c. The ground metal containes are electrically insulated with the insulating materials 7a and 7b between the 4a and 4b and 4b and 4c. Terminals 10a and 10b are lead separately out of electrodes 8a and 8b buried into spaces 2a and 2bn being insulated from the metal flanges 6a and 6b. In this case, the tuning center frequency is especially set at more than 1.5MHz. This can remove noises infiltrated from a power transmission line thereby enabling the measurement of a partial discharge pulse from a post type spacer 26 with no electrode for detection of partial discharge.</p> |
