二进制电位器在矿用保护器测试中的应用设计

Application Design of Binary Potentiometer in Mine Protector Test

矿用保护器在测试电位器特性时若要实现自动测试的功能,通用数字电位器在功率、分辨率、误差等方面都不能满足使用要求,因此设计了一种数字电位器,具有漏电闭锁回路电阻值检测功能、电动机过热回路电阻值检测功能、36 V/127 V漏电监视电阻值检测功能。重点介绍了二进制数字电位器的结构及其工作原理。该电位器可实现保护器测试自动化,为特殊数字电位器应用提供了新的设计方法。

When mine protector in characteristic test for potentiometer, if the function to be achieved, the power, resolution and error of general digital potentiometer requirements. Therefore proposed a digital potentiometer, with leakage locking loop of automatic test was intend cannot meet the practical resistance value detection function, motor overheating loop resistance value detection function, 36 V/127 V leakage monitoring resistance value of the detection function. Introduced the structure and working principle of binary digital potentiometer. The potentiometer can be used to test automation, and it provides a new design method for the application of special digital potentiometer.