Different between star and Delta Motor connection advantage of star and Delta connection

Different between star and Delta Motor connection

Delta Connection for 3 Phase Motor:

- delta connection is a connection used in a three - phase electrical system in which three elements in series form a triangle , the supply being input and output at the three junctions . The delta connection consists of three - phase windings connected end - to - end which are 120 ° apart from each other electrically.

In delta connection each phase 440v apply so Voltage increase that's why current increase so motor run full torque.

Why delta connection is used in motor ?

 The high starting torque can be developed using only the delta connection because in delta connection the voltage across each winding is root three times higher than star connection .

If our application requirements full torque so definitely connect delta connection

Line voltage= Phase voltage

Line current= √3 phase current

Star Connection for 3 Phase Motor:

Star connected motors have a central connected point , called a short circuit point or star point and each winding receives phase voltages ( 230volts ) , star connected motor only run at one third of the motor rated torque and power , whereas delta connected motors have no connected point and each winding receives line .

In star connection each phase 230v apply so Voltage decrease motor run 1/3 current it's motor current decrease as compare delta connection

line voltage= √3 phase Voltage

Line current=phase current