The G series variable frequency speed-adjustable fan is an independent cooling fan installed at the end of the motor. The fan itself does not change frequency because this series of fans was first used to dissipate heat for variable frequency motors. It was once a cooling fan for variable frequency motors, so it is also called a variable frequency fan. Not only suitable for variable frequency motors, ordinary industrial frequency motors can also be equipped with variable frequency fans to dissipate heat from the motors. However, for variable frequency fans used to dissipate heat from industrial frequency motors, the air duct needs to be lengthened, otherwise it will affect the installation and use of the variable frequency fan.

The variable frequency motor fan is an independent cooling fan installed at the end of the variable frequency motor. Due to the constant changes in frequency when the variable frequency motor is working, an independent cooling fan needs to be used to dissipate heat to the motor.