Dc 3 Point Motor Starter Diagram. Here for starting the motor the control arm is moved clockwise from its off position to the on position against the spring tension. To summarize the connection of terminals a shall be connected to either terminal of armature l shall be connected to either positive or negative terminal of dc supply.
The terminals used in it are as followed. Figure 2 shows a manual starter circuit diagram. Here for starting the motor the control arm is moved clockwise from its off position to the on position against the spring tension.
The electromagnet that holds the starter in the run position is in the field circuit.
It is because of back emf it plays an important role. Well it s due to the presence of back emf e b which plays a critical role in governing the operation of the motor. In this article we will study about the construction and working of 3 point starter. This starter is a so called three point starter.