| 摘要 |
<p>PURPOSE:To monitor variation of characteristics of gapless arrester, and intend to improve the reliability, by measuring periodically resistant electric current in which leading current is excluded. CONSTITUTION:Voltage e1 of resistance R1 in earthed side of the arrester and leading electric current e2 of a condenser C2 are input to the same measuring device 6, and capacity component of electric current of the arrester is cut. Thus, measured value is only resistance component, and if resistant value of the resistance R1 is multiplied to this voltage, resistant electric current of actual non-linear resistant body can be obtained. Variation of characteristics of the arrester can be easily monitored by measuring this electric current periodically.</p> |
