Thermal protectors are generally based on customer requirements to set the temperature, voltage and other parameters, before the formal production to test whether the sample is qualified. So, how to test to determine the temperature parameters of the thermal protector? Below, I have summarized a test program for you, and I hope it will be helpful to you. First, determine the installation position of the temperature sensor cylinder of the thermostat (during production, to reserve a positioning slot on the scraper), and to be fixed closely on the scraper. Second, determine the temperature measurement point of the evaluation effect. Third, define the planar thermocouple thermometer as a temperature measuring instrument. It is well known that thermal test results differ greatly from actual test methods and installation conditions. Therefore, when testing, it is necessary to correctly install the thermal protector and temperature protection switch, and ensure that the environmental factors used are the same as the actual working environment.