In star connection, one end of all the three wires are connected to a common point in the shape of Y, such that all the three ends of the three wires form the three phases and the common point forms the neutral. Delta configuration is generally used in power distribution and various industrial setups. In delta connection, the phase voltage is equal to the line voltage hence it requires more number of turns.
Both 3 phase 4 wire and 3 phase 3 wire system can be derived in the star connection. The speed of delta connected motors is high because each phase gets the total of the line voltage. Star connections are mainly required for the Power Transmission Network for longer distance. Skip to content Difference between star and delta connection are explained considering various factors like the basic definition of the connections, the existence of a neutral point, the connection of the terminals, the relation between line current and phase current and also between line voltage and phase voltage, speed, its insulation level, number of turns, type of system and network usage, etc.
Difference Between Star and Delta Connection The terminals of the three branches are connected to a common point. The network formed is known as Star Connection. The three branches of the network are connected in such a way that it forms a closed loop known as Delta Connection. 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.
But in Delta connection, there is no neutral point. 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. 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. 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.
Star connections are mainly required for the Power Transmission Network for longer distances, whereas in delta connection mainly in Distribution networks and is used for shorter distances. In star connection, each winding receives volts and in delta connection, each winding receives volts.
But, in case of current, current across each element is different than the line current. Generally, star connection is used where you need a neutral and two separate voltages, like our distribution system. Delta connection is generally preferred where neutral conductor is not needed like for transmission of high voltage power.
Also, delta connection is preferred where 3rd harmonics needs to controlled. For example,. Consider the star connected winding first. Apparent power transferred by a single phase is given by. This is the power transferred by a single phase. To calculate the power transferred by 3 phase we can multiply this equation by 3. Multiply above equation by 3 to calculate power transferred by 3 phase. Electrical Engineer. Content Creator.
Recommend reading before moving on in this tutorial 1 phase and 3 phase power Star Connection. Star Connection. Post Tags: 3 Phase. Posted In: 3 phase system Tutorials. Gaurav J Electrical Engineer. All stories by: Gaurav J.
0コメント