In star connection, phase voltage is low as 1/√3 times the line voltage, whereas in delta connection phase voltage is equal to the line voltage.The speed of the star-connected motors is slow as they receive 1/√3 of the voltage but the speed of the delta connected motors is high because each phase gets the total of the line voltage.In Star connection, the line voltage is equal to root three times of the phase voltage, whereas in delta connection line voltage is equal to the phase voltage.In star connection, the line current is equal to the phase current, whereas in delta connection the line current is equal to root three times of the phase current.The end of each coil is connected to the starting point of the other coil that means the opposite terminals of the coils are connected together. But in Delta connection, there is no neutral point. In a star connection, the starting and the finishing point ends of the three coils are connected together to a common point known as the neutral point.The three branches of the network are connected in such a way that it forms a closed loop known as Delta Connection.
The network formed is known as Star Connection.
The terminals of the three branches are connected to a common point.The connection diagram is shown below:ĭifference Between Star and Delta Connection In this, there is no common or neutral point, and it is used for power transmission for short distances. In delta connection, all the three terminals are connected together forming a closed loop. A star connection has a common or a star point to which all the three terminals are connected forming a star shape as shown below: One is known as Star Connection, and the other one is Delta Connection. In a three-phase circuit, there are two types of connections. In this article, the difference between Star and Delta Connection is explained. Three phase four wire system can be derived from the Delta connection. In delta connection each winding receives 414 volts.īoth three phase four wire and three phase three wire system can be derived in star connection. In Star Connection each winding receive 230 volts Mainly used in the Power Transmission networks. Phase voltage is equal to the line voltage. Phase voltage is low as 1/√3 times of the line voltage. The Speed of the delta connected motors is high because each phase gets the total of the line voltage. The Speed of the star connected motors is slow as they receive 1/√3 of the voltage. Line voltage is equal to the Phase voltage. Line voltage is equal to root three times of the Phase Voltage Line current is equal to root three times of the Phase Current. Line current is equal to the Phase current. Neutral point does not exist in the delta connection. Neutral or the star point exists in the star connection.
The starting and the finishing point that is the similar ends of the three coils are connected together. The terminals of the three branches are connected to a common point. The difference between the Star and Delta Connection are given below in the tabulated form.