What is the starting voltage and rated voltage of the DC cooling fan

With the increasing use of cooling fans, many people have become interested in the details of cooling fans, and some people will ask what is the starting voltage and rated voltage of DC cooling fans.

Starting voltage: refers to the minimum voltage when the fan is suddenly powered on.

Working voltage: refers to the stable voltage that can make the fan work normally after power-on, that is, the rated voltage.

What is the relationship between starting voltage and rated voltage?

Starting voltage: If the rated voltage of the DC cooling fan is 12V, the starting voltage is generally below 7V. Since the voltage provided by the system may be unstable, if the starting voltage is lower, the distance from the rated voltage 12V will be larger, indicating that the DC The wider the voltage range over which the fan can operate, the guarantee that the fan can be activated at low voltage in the event of an unstable voltage.

Start-up voltage test method

The starting voltage value can be measured by testing tools such as a multimeter. The low working current of the DC cooling fan not only reduces the power consumption, but also reduces the calorific value of the fan motor and prolongs the service life of the cooling fan. For oil-containing cooling fans, the volatilization of lubricating oil can also be slowed down, so the lower the current, the higher the reliability of the fan. Under the condition that the conveying air volume and air pressure are constant, the lower the fan current is, the smaller the power is, and the actual power delivered to the gas is unchanged, and the fan efficiency is higher. The working current of the cooling fan can be measured with an ammeter.