在串激电机的制造过程中,由于多种原因而造成的匝间绝缘故障是很难避免的。因此,从国内和国外的有关资料来看,都把匝间绝缘耐压试验作为电动工具行业的一个主要试验项目。目前,电动工具行业采用两种形式的匝间短路试验器。一种是感应式匝间短路试验器,使用中频发电机组产生1000赫芝的三相中频电源加在特制的定子绕组上, In the manufacturing process of the series motor, turn-to-turn insulation failure due to various reasons is hard to avoid. Therefore, judging from the relevant data both at home and abroad, the inter-turn insulation withstand voltage test is regarded as a major pilot project in the power tool industry. Currently, the electric tool industry uses two forms of turn-to-turn short circuit testers. One is an inductive turn-to-turn short circuit tester, the use of IF generator generating 1000 Hertz three-phase IF power supply in a special stator winding,