1. The electrical characteristics of the sample were tested, and the parameters such as current, speed, power and abnormal sound were recorded


2. Turn on the high temperature oven and place the fan


3. Input voltage according to the test requirements, connect the fan, and confirm that the fan operates normally, and there is no hidden danger such as collision and wire scraping.


4. According to the high temperature testing machine temperature set by the test temperature, confirm whether the fan operates normally, and test the electrical characteristics of the fan from time to time.


After the test, the appearance and relevant electrical parameters of the cooling fan were compared with those before the test, and the fan was disassembled to confirm whether the parts were in good condition, whether there was looseness or poor appearance.