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1997年2月的一天,我村面粉加工户周某急匆匆找到我说,春节过后,许多群众需要加工面粉,可是电机闸刀一合,配电盘总保护器就动作,连续几次都是这样.我想,可能是对地绝缘不良,电机本身漏电造成的.结果我用摇表一测,电机对地绝缘良好,并不存在漏电现象;闸刀至电机接线盒一段导线也进行了清理.故障仍未排除.于是我又对其所有设备进行细致地检查.当检查到电机闸刀时,发现其中一相触片外面间隙稍大,里面间隙小,其它两相触片间隙均很小.问题是不是出在这里?我对这一相触片进行了调整,使其
One day in February 1997, Zhoumou, a flour-processing household in our village, hurried to find me and said that after the Spring Festival, many people need to process flour. However, when the motor blades are combined, the total protector of the switchboard is in motion for several times in a row. Think, may be to poor insulation, the motor itself caused by leakage.I use a shake table a test, the motor insulation to the ground, there is no leakage phenomenon; knife to the motor junction box section of the wire has also been cleaned. Fault is still I did not rule out all the equipment and then I carefully check when the motor knife check and found that one of the contacts outside the gap slightly larger, the gap is small, the other two-phase contact gap are small The problem is Is not here? I have adjusted this phase to make it