【摘要】 针对煤矿电动机保护器的保护性能,详细介绍了测试原理。提出了采用单片机模拟输出电压作为保护器短路、过载与断相的输入和模拟输出电阻作为保护器的漏地电阻和热敏电阻的输入的方法,来实现对保护器的自动测试。更多还原

【Abstract】 Aimed at the performance of coal mine motor-protector,the testing principle is introduced detailedly.Some methods,which the output voltage of micro-controller are regarded as protector inputs of short-circuit,overloading,loss phase of the motor.And the potentiometers output are regarded as inputs of leak-ground,temperature of motor,are presented.It realized auto-testing for the protector.更多还原