3 Point Starter
THREE POINT STARTER NECESSITY To limit high starting current. To prevent motor from under voltage, no voltage and over voltage. CIRUIT DIAGRAM CONSTRUCTION It consist of a variable resistance having a number of contact points Off.1.2.3.4.5 called as Studs. There are three terminals in 3-point starter: 1) ‘L’ Line terminal: (Connected to positive supply) 2) ‘A’ Armature terminal. (Connected to armature winding) 3) ‘F’ Field terminal (Connected to field winding) Point L is further connected to electromagnet called OLR (overload release) The second point of OLR is connected to the starter handle. The handl...