Soft start function and stall protection function of cooling fan
The motor is the core of the DC cooling fan. It is generally composed of a stator and a rotor. The stationary part of the motor is called the stator, and the rotating part is called the rotor. The cooling fan generally has soft-start function and locked-rotor protection. Function; Next, the technical staff of Tong Chi will reveal the mystery; u003cbru003e u003cbru003e u003cbru003e 1. The soft-start function of the cooling fan: When power is supplied to the cooling fan, the current is zero and gradually increase until the cooling fan reaches the maximum speed and rated current. The maximum starting current is equal to its own operating current (or in a few cases, the rotor is locked and restarted). The fan will reach the rated speed within 5 seconds. u003cbru003e u003cbru003e u003cbru003e 2. Anti-burning protection when locked rotor: u003cbru003e u003cbru003e u003cbru003e When the fan blades are caught by foreign objects, overcurrent will be generated, which will cause the temperature of the fan coil to rise, which may lead to performance deterioration, equipment failure or fire. In order to prevent the above accidents, our fan products With anti-burn protection function. The current cut-off type (DC fan), when the fan blade is stuck to a foreign object, the current of the coil will be periodically cut off to prevent the temperature of the coil from rising, and the fan will automatically start after the foreign object is removed. (The self-start time of each model is different, please confirm according to the specific model) u003cbru003e u003cbru003e u003cbru003e 3. Power cord reverse connection protection (please confirm with the supplier before purchasing, a few cooling fan brands will protect the power cord reverse connection): u003cbru003e u003cbru003e u003cbru003e Even if the positive and negative wires are connected reversely, the fan will not be damaged (need to be used within the voltage range). However, if the positive and negative lines of the power supply are connected to the sensor line/PWM control line or the sensor line/PWM control line is connected with the opposite polarity, it may cause the fan to malfunction. (When the supply voltage is within the operating voltage range of the fan, the fan will not malfunction even if the positive and negative wires are reversed) u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e Tongchi Auto focuses on the field of cooling fans, provides professional technical support, can carry out product collaborative design according to user needs, and provide overall cooling solutions.