一台三相异步电动机发生了故障,甚至烧坏了绕组,在修复绕组的同时,必须找出故障原因,并设法根除,才可避免再次烧坏,从而保证电动机的安全运行。因此,我们在修理电动机时,拆掉旧绕组之前,必须仔细观察损坏现象,了解使用情况,认真分析原因。绕组烧坏的原因很多,常见的有过载、缺相运行、匝间短路、相间短路和接地等。现分别分析如下: 1.过载因过载而烧坏绕组的特征是三相绕组全部均匀烧坏。过载的原因很多,常见的有以下几 A three-phase asynchronous motor failure, or even burn the winding, repair the winding at the same time, we must find out the cause of the problem, and try to eradicate, to avoid burning again, so as to ensure the safe operation of the motor. Therefore, when we repair the motor, remove the old windings, we must carefully observe the damage, to understand the use of careful analysis of the reasons. Winding burn out for many reasons, common overload, lack of phase operation, turn to turn short circuit, phase short circuit and ground. Are now analyzed as follows: 1. Overload burned due to overload The winding is characterized by three-phase winding all burn out evenly. There are many reasons for overload, the following are common