介绍QC83 -80N矿用隔爆型空气磁力起动器的真空化改造特点。改造后的开关采用JDB -80N电子综合保护器对控制电动机进行保护 ,可完成电动机的短路、过载、断相和漏电闭锁等保护功能。新设计的机械联锁机构与控制电路配合 ,能从电气和机械上对正反向真空接触器进行闭锁 ,提高了两接触器联锁的可靠性。经现场使用证明 ,改造后的起动器保护性能稳定、动作可靠、性能价格比高 Introduction QC83 -80N mine flameproof air magnetic starter vacuum transformation characteristics. After the transformation of the switch using JDB -80N electronic integrated protection of the motor control protection, to complete the motor short circuit, overload, phase failure and leakage protection and other functions. The newly designed mechanical interlocking mechanism cooperates with the control circuit to lock the positive and negative vacuum contactor electrically and mechanically, which improves the reliability of the interlocking of the two contactor. The field use proved that the modified starter protection and stable performance, reliable action, high cost performance