| 摘要 |
<p>PURPOSE:To facilitate oil removal and re-filling operations by connecting the insulating hollow porcelain side of high-voltage section and the lower tank side which is a low-pressure section inside the lower tank by means of the inner and outer piping divided by partition and equipped with valve. CONSTITUTION:In the normal operating condition, valve 9 is opened with oil- tight chambers 11 and 12 connected. For example, if the secondary coil 2 housed in the lower tank 1 malfunctions, oil in the lower tank is drawn from the oil discharge valve by closing valve 9 and inspection of the secondary coil 2 can be conducted easily with oil filled in the oil-tight chamber 11. After inspection of the secondary coil 2, normal operation can be made only by pouring oil in the lower tank 1.</p> |
