[Did You Know About Cooling?] What are the fan protection tests?
Category:
Industry Trends
Release time:
2019-03-26
DC fan What are the protection tests? Here’s a brief introduction:
1. Rotational locking protection
1.1 Several fan blades are connected and fixed together, restricting their rotation. If the fan and its electronic components remain undamaged, loosening the component that restricts rotation will allow the fan to automatically resume spinning.
1.2 Small current or with Auto start The functional fan locks the fan blades in the powered, rotating state, continuously. 72 An hour later, after releasing the locked blade, the fan immediately restarted automatically, proving that the fan was functioning normally.
1.3 High current or unshielded Auto start The fan with this function must not be locked for an extended period; otherwise, the fan may overheat and get damaged.
2. Polarity protection
Under normal voltage conditions, if the power supply is connected in reverse to the fan, it will be energized. 15 Minutes later, after the power is restored and the two poles are reconnected as usual, all functions will operate normally.
3. Free fall
Monomer by 600mm Fall from a great height 30mm On a thick wooden board , Fan 6 Any face and any corner of the surface can withstand drop tests. , And confirm there is no damage.
4. Insulation impedance
At 500V Under DC conditions, the resistance between the outer frame and the positive terminal of the wire shall not be less than... 10M Omega
5. Dielectric strength
At 5mA Leakage current, AC500V Continuously under the conditions 60 Second, there are no abnormalities in the fan’s outer frame or wiring, indicating good insulation.
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