This video is 3 phase motor connection proper star and delta connection full step by step a to z crimping tools amazon httpsamznto2akjmjo youtube playlist video. In star connection smooth starting and operation with nominal power normal operation without overheating can be achieved.
Star Delta Starter For 3 Phase Motor
Star connection of motor 3 phase. Let us consider the system of the figure 4 which is balanced y y three phase four wire system if the source voltages are given by 1. The 3 phase impel induction motor can be connected in delta connection and star y connection. Star connection line and phase currents. In star connection phase voltage is low as 13 times of the line voltage whereas in delta connection phase voltage is equal to the line voltage. Phasor diagram showing phase and line voltages. Therefore it needs a low number of turns hence saving in copper.
The timer controls conversion from star connection to delta connection. Star connection in a 3 phase system in the star connection the similar ends either start or finish of the three windings are connected to a common point called star or neutral pointthe three line conductors run from the remaining three free terminals called line conductors. Line voltage is the voltage between two phases in three phase circuit and phase voltage is the voltage between one phase to the neutral line. 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. This video shows changes the induction motor wiring from star connection to delta connection. In star connection the line voltage is 3 times of phase voltage.
And the current is same for both line and phase. A timer in star delta starter for a 3 phase motor is intended to do the move from star mode utilizing which the motor runs on a decreased voltage and current and produces less torque to the delta mode indispensible for running the motor at its full power utilizing. The term y y applies since both the source and the load are y connected. It is shown as expression below. Star connection y system is also known as three phase four wire system 3 phase 4 wire and it is the most preferred system for ac power distribution while for transmission delta connection is generally used. In star connection the phase voltage is low as 13 of the line voltage.
In delta connection motor receives highest power output.
Gallery of Star Connection Of Motor 3 Phase
