What problems need to be tested after the cooling fan is pro

What problems need to be tested after the cooling fan is produced?

The cooling fan needs to be tested after the production is completed through a series of processes. After the test, the fan with no problem will go to the next step of labeling. The fan tester with the problem will select the problem and classify the problem for reprocessing, then the main test What are the problems? The following cooling fan manufacturer Ruiapple Electronics will tell you:

Problems in the production test of cooling fans:

1. Abnormal current

2. Abnormal sound

3. Super constant

4. Jitter

5. Reverse

What problems need to be tested after the cooling fan is produced?

Cooling fan protection test:

1 Swivel lock protection

1.1 Several fan blades are connected together and fixed to restrict their rotation. If the fan and electronic components are not damaged, the fan can automatically restart to rotate if the components that restrict the rotation are released.

1.2 For low-current or self-starting fans, the fan blades are locked in the power-on rotation state. After 72 hours, the locked fan blades are released and the fan automatically restarts to prove that the fan is normal.

1.3 The fan with high current or without self-start function cannot be locked for a long time, otherwise the fan will be overheated and damaged.

2 Polarity protection

Under normal voltage conditions, if the fan is energized for 15 minutes by reversely connecting the power supply, and then reconnecting with the normal two poles after power failure, all functions will be normal

3. Free fall

The single body is dropped from a height of 600mm onto a 30mm thick wooden board. Any one and one corner of the 6 surfaces of the fan can withstand the drop test, and it is confirmed that there is no damage.

4. Insulation resistance

Under the condition of 500V direct current, the resistance between the outer frame and the positive pole of the wire is not less than 10MΩ.

5. Insulation strength

Under the condition of 5mA leakage current and AC500V for 60 seconds, there is no abnormality between the fan frame and the wire, which proves that the insulation is good.