试验研究了台式砂轮机起动过程中定子绕组电流的变化情况，找出了特有的曲线规律。首次提出了一种在出厂总检线上利用测试绕组电流从而达到检测起动时间的新方法。介绍了检测装置软、硬件基本结构。本装置几年来工作情况良好 The change of stator winding current during the start-up of bench grinder was experimentally studied, and the unique curve rule was found out. For the first time, a new method of using the test winding current at the factory inspection line to detect the start-up time was proposed. The basic structure of software and hardware of testing equipment is introduced. The device worked well for several years