Research of the Inverse Time Characteristic Curve for the Electronic Thermal Relay

摘要：

In order to make the protection characteristic of the electronic thermal relay conforming to the temperature-rising law of the motor,the disadvantages of action characteristic of the simulation electronic motor protector are analyzed in this article based on the international standard inverse time action math model for the electronic thermal relay,and inverse time characteristic of the simulation electronic thermal relay is also modified here by using the reverse exponential volt-ampere characteristic of the regulator tubes PN junction. It has been proved that the method had the advantage of simple operation and good effect. Heat-resisting ability of the electromotor can be fully exerted here and the electromotor trips timely under the conditions of over loading. Three phase unbalance or phase failure can also be ensured. The protection performance meets the JB3905 demand.

关键词： reverse time characteristic protector of motor PN junction electronic thermal relay.

作者: Liyan Cui Shuqiu Gong Jing Li Bin He

作者单位: Liaoning Administrators College of Police and Justice,Shengyang,l 10161,China Department of Electrical Engineering,Shenyang University of Technology,Shengyang,l 10161,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 1689-1692

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）