on video Basics of Star Delta Starter.

 You might have seen that in order to start a high power rating induction motor, a starting technique called star-delta is used. In this video, we will understand why a star-delta starter is needed, and how it is accomplished practically with help of animation.

Its ok to start small motor directly… but there is one big problem when you will start big motor

Directly.

 A large induction motor in delta can produce an sudden or inrush current of over 5 times its

 full load capacity when starting up!

The surge or simply sudden increase in current can cause a lot of problems as the electrical system will be hit with a massive demand at once. This can lead to component failure and fires due to the temperatures rising in the infrastructure. Voltage drops can also appear on other machines/devices across the electrical network which is a problem for things such as computers and servers.

What is solution for that problem..?

We use star delta starters to reduce the current when a motor starts. 

By using star delta starters we reduce the starting voltage which causes a drop in the starting current.

 You might have seen that in order to start a high power rating induction motor, a starting technique called star-delta is used. In this video, we will understand why a star-delta starter is needed, and how it is accomplished practically with help of animation.

Its ok to start small motor directly… but there is one big problem when you will start big motor

Directly.

 A large induction motor in delta can produce an sudden or inrush current of over 5 times its

 full load capacity when starting up!

The surge or simply sudden increase in current can cause a lot of problems as the electrical system will be hit with a massive demand at once. This can lead to component failure and fires due to the temperatures rising in the infrastructure. Voltage drops can also appear on other machines/devices across the electrical network which is a problem for things such as computers and servers.

What is solution for that problem..?

We use star delta starters to reduce the current when a motor starts. 

By using star delta starters we reduce the starting voltage which causes a drop in the starting current.