By visual inspection of the motor or its interior, two coils marks a motor that runs at rpm rpm nominal , while 4 coils marks a rpm motor. Wiring Diagram of 3 Speed Fan Capacitor Below is a basic and simple figure of an external connection that links the ceiling fan, fan speed. Add those together to get a total of 9.
Ceiling fan has a “capacitor start motor” in its inside. AC single phase capacitor start motor has two winding; one is starting winding and another is running winding. As it is a capacitor start-capacitor run type motor; there a capacitor is used in series with Starting Winding, It defines the direction of rotation. It is an electrolytic capacitor.
Suppose there is no capacitor connected in the ceiling fan motor circuit. This way both the starting and running windings are connected in parallel across the single phase AC supply voltage (120V in US & 230V in EU).
In this topic, you study Capacitor Run Motor – Theory, Construction, Diagram, Working & Torque Speed Characteristic. Capacitor Run motors are commonly called as fan motors. In Capacitor Run Motor, the auxiliary winding (A) along with the capacitor (C) is in the circuit for both, starting and running (Fig. 1).
If you are looking for the exact reason why ceiling fans have capacitors, you’re in the right place. We will answer this question in simple terms to clear up any confusion. Generally, the ceiling fan motors are split phase single phase AC motors. There are two windings inside the ceiling fan known as Starting Winding and Running Winding.
The switch housing inside a fan has a black box which is a capacitor. We see that the terminal with total resistance in-between 11 the other two is C so we label that as R the run terminal to which the run capacitor will be wired.