the important is contactor, timer, olr.....
The use of a star delta starter is for motor control only and not resistive heating loads. This type of starter is used to dampen the inrush current by using a lower voltage to start the motor.
mnhjjhjjhnbn
To perform a star-delta connection using a push button, you typically use a control circuit that includes relays or contactors. First, the push button is used to start the motor in star configuration, allowing for reduced voltage and lower starting current. After a predetermined time (often using a timer), the control circuit switches from the star to the delta configuration, allowing the motor to run at full voltage. This setup requires appropriate wiring and safety measures to ensure proper operation and protection of the motor.
By using the star- delta starting methodBy using variable rhoestatsBy using auto transformers
The inrush current is reduced. This is the reason for star delta starters. Motor starts on star and after about 10 to 15 seconds, depending on the load of the motor, it switches to a delta configuration to run.
motor can be control by using variable frequency drive
because at the starting the induction motor drawn a heavy current thats why we use starter to increase the starting resistance of the induction motor!
An SCR chip is commonly used to control the speed of a motor. The speed is controlled using an AC circuit and phase angles.
A star-delta starter is a method used to reduce the starting current drawn by a 3-phase induction motor. It involves initially connecting the motor windings in a star configuration for starting, and then switching to a delta configuration for running. This helps to minimize voltage drops and prevents excessive current flow during start-up.
230/400 V These motors can be connected in star to a mains of 400 V between the phases (see figure 1). figure 1 Star connection 400/695 V These motors should be connected in delta to a mains of 400 V between the phases (see figure 2).
two contecter <<>> There are three contactors used in a Star Delta configuration.
The DC motor speed control has a scope of four speeds. The control speeds include; high, medium, low, and off.