A.絕緣電阻B.直流電阻C.泄漏電流D.介質(zhì)損耗
A.變壓器絕緣整體受潮B.變壓器部件表面受潮或臟污C.變壓器貫穿性的集中性缺陷D.變壓器整體絕緣老化、變壓器油質(zhì)劣化等集中性缺陷
A.溫度B.濕度C.氣壓D.臟污