EC fans often have a soft start feature, which is a feature that controls when the fan starts.

The soft start function is designed to reduce the current surge when the fan starts, as well as reduce the stress on mechanical components and damage to the fan.

By gradually increasing the current in the stator winding, the soft start function allows the wind turbine to accelerate smoothly to the rated operating speed without causing excessive load on the grid and the wind turbine itself.

The main advantages of the soft start feature include:

The soft start function can avoid the pressure caused by large current surges on the power grid and reduce the impact on the power grid.

The soft start function can reduce mechanical stress during startup and extend the service life of mechanical components.

By gradually increasing the current, soft start can functionally reduce energy loss during startup and improve overall energy efficiency.

The soft start function can smoothly accelerate the fan to the rated operating speed and avoid the impact of sudden start on the system and equipment.

The soft start function of the EC fan is usually implemented by the control circuit inside the fan. The soft start function is particularly useful for applications that require frequent starts and stops, such as air conditioning systems, ventilation systems, and refrigeration equipment.