| 摘要 |
PURPOSE:To measure and monitor floating particle amount in oil continuously by providing a floating particle amount measuring unit in oil of an oil circulating path. CONSTITUTION:A tank body 3 containing the content of the oil-immersed electric equipment having an iron core 1 and windings 2 and so forth communicates through a tube 4 with a cooler 5. Insulating oil is circulated by an oil pump 6 to the tank 3, the tube 4 and the cooler 5. The floating particles in the oil are measured by the floating particle amount measuring unit 7. When the measured value of the measuring unit 7 reaches a reference value beforehand in a microcomputer 12, a signal is fed from the microcomputer 12 to a solenoid valve 11, an alarm lamp 14 and a DC power source 13, the solenoid valve is opened, the lamp 14 is turned on, the power source 13 is operated, an electrostatic filter 10 is operated, and the floating particles in the oil are rapidly removed. |
