Undervoltage tripping device in the utility model, and the measured voltage line connecting the anti-interference circuit and anti-interference circuit connected with the rectifier circuit, the output of the rectification circuit is respectively connected with the sampling circuit, power supply circuit and electromagnet, output sampling circuit, power supply circuit are respectively connected with the controller, the output control of the electromagnet controller, the electromagnet solenoid electromagnet; the controller circuit is connected with the solenoid coil electromagnet drive through the coil, the coil current in the coil of the drive control circuit, thereby driving the attraction and separation of the armature. The undervoltage tripping device using the solenoid magnet, the air gap in the middle of all the excitation coil, big suction, effectively avoids the common problem of electromagnet suction; the coil drive circuit can improve the reliability of the electromagnet, effectively avoids the stability and reliability of the control circuit is not high.
【技术实现步骤摘要】
【技术保护点】
一种欠压脱扣器，包括与待测电压线路连接的抗干扰电路，所述抗干扰电路与整流电路连接，所述整流电路的输出分别与采样电路、电源电路和电磁铁连接，所述采样电路、电源电路的输出与控制器连接，所述控制器的输出控制电磁铁动作，其特征在于：?所述电磁铁为螺管式电磁铁；?所述控制器通过线圈驱动电路与所述电磁铁的线圈连接，所述线圈驱动电路控制线圈内电流的通断，从而驱动衔铁的吸合与分离。
【技术特征摘要】
【专利技术属性】
技术研发人员：佘定辉，黄鹏，包志舟，黄锐，魏才华，
申请(专利权)人：人民电器集团有限公司，
类型：实用新型
国别省市：
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