请教此处mass作何解?? 有一资料谈到电机运行前应测量绝缘电阻时,用了一个词组:phase against mass.此处mass作何解?? 原文:before commissioning the insulation resistance of the winding must be measured by qualified personnel phase against phase and phase against mass. 意为:调试前必须由合格人员测量绕组的相与相之间和相与地/壳间的(?)绝缘电阻。 此种表示法在网上查也未查到,只得求助盖德的弟兄们,预祝大家圣诞快乐!!!! [ ]查看更多4个回答 . 1人已关注