connection on motor leads

There is two way of connection on leads of induction motor (1) star connection (2) delta connection.

(1) star connection

→As shown in picture above. Short either U1, V1, W1 or  U2, V2, W2 in leads and supply to Another side where no shorted leads  L1, L2, L3 . 

→star connected motor only run at one third of the motor rated torque and power. So most of below 5 hp motors are star connected.

→ so this is how star connection has been done.

(2) Delta connection

→As shown in picture above. short  w2-u1 , u2-v1 , v2-w1 with links and supply either u1,v1,w1 or u2,v2,w3

→Delta connected motors run at full speed and power. above 5 hp motors are generally connected in delta connection 

→ so this is how delta connection has been done

Note- (Do proper lugs and tight all the leads properly so that no sparking and  no cable failure in it. choose proper size of cable and always  do earthing. Never short phases in motor leads)