| 摘要 |
<p>PURPOSE:To take the preventive measure of an insulation accident accurately by making the position and state of a conductive foreign matter distinct from the difference of the increase rate of the concentration of SO2 as the cracked gas of SF6. CONSTITUTION:A built-in type partial-discharge detector 50 is installed to a grounding tank 20, a detecting signal is taken into a computer 80, and the quantity of charges of partial discharge is analyzed. The concentration of SO2 as the cracked gas of SF6 gas 40 by partical discharge is measured by a cracked-gas measuring instrument 70. The concentration of SO2 is taken into the computer 80, and arithmetically operated, decided and processed together with the signal of the quantity of charges of partial discharge, and the position of attachment and state of a conductive foreign matter are displayed.</p> |
