Inner Plugging Machine

Plugging — sometimes referred to as “reverse current braking” — is possible on both DC motors and AC induction motors. For DC motors, plugging is achieved by reversing the polarity of the armature voltage. When this happens, the back EMF voltage no longer opposes the supply voltage.Plug braking, also refered to as dynamic braking, is a safe way to slow down a vehicle with a series motor when the motor direction is reversed. Without plug braking, if the operator reverses direction while the vehicle is in motion the armature will lock up.