| 摘要 |
PCT No. PCT/FR96/01513 Sec. 371 Date May 19, 1997 Sec. 102(e) Date May 19, 1997 PCT Filed Sep. 27, 1996 PCT Pub. No. WO97/12379 PCT Pub. Date Apr. 3, 1997An electrical transformer which is filled with a combustible coolant may experience a break in the electrical insulation within the transformer. This break in the electrical insulation may lead to an explosion or fire. A pressure sensor and a vapor sensor are preferably coupled to the enclosure to monitor the pressure and vapor content of the enclosure. An increase in pressure of the enclosure may indicate that an insulation breakdown has occurred. When an increase in pressure is detected, the coolant is partially drained from the enclosure. After draining some of the coolant, an inert gas may be injected into the bottom of the enclosure to stir the remaining coolant.
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