ASTM D7150测定低温热应力下绝缘液体放气特性的标准试验方法
日期:2012-02-08 11:09
electrical apparatus are the usual sources that generate gases. Experience has shown that some of the gases could form in the oil at low temperatures or as a result of contamination, without any other influences.
Some severely hydro-treated transformer oils subjected to thermal stress and oils that contain certain types of contamination may produce specific gases at lower temperatures than normally expected for their generation and hence, falsely indicate abnormal operation of the electrical app
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09/10 11:35