| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oil feeding device which can detect an insulating oil that was fed at the last time and remains in an oil feeding path, and can surely prevent the previous oil from being mixed in the oil feeding path. <P>SOLUTION: Insulating oil evaluation means 2 of an oil feeding device comprises: feature point determination means 23 for comparing the infrared absorption spectrum of the previous oil and the current oil acquired from an insulating oil database 21 by spectrum acquisition means 22, and determining a feature point which becomes the feature among the differences therebetween; and residue detection means 24 for referring to the feature point for the infrared absorption spectrum of the insulating oil in a storage tank 14 measured by an infrared spectrometer 25, and detecting the residue of the previous oil. <P>COPYRIGHT: (C)2013,JPO&INPIT |
