Star Delta On 3 Phase Electric Motors, Why?

The application of electric motors in the scope of work has become familiar to us, the use of 3 Phase Electric Motor itself has various advantages that are very helpful in supporting work to be easier and more efficient, but having advantages does not mean that it does not have disadvantages, one of which is that it has a large electric power in its operation. with the amount of electric power to operate the electric motor, of course, the question is whether it is safe and does not cause problems with the stability of the electrical system and the electric motor itself?

Panel Star Delta

Basically, all machine products must have their own problems as well as electric motors, the use of large power for initial starting will certainly cause various problems and the following are some of the problems caused.

Voltage drop
surge in electric current
rapid deterioration of electric motors

To minimize these problems, an electrical circuit system called a star delta circuit system on a 3-phase electric motor is needed.

What should be a delta star circuit on a 3 phase electric motor?

It is highly recommended to use a delta star circuit on an electric motor, this aims to reduce the surge in electric current so that the voltage will remain stable and prevent damage to the electric motor due to the large power that suddenly enters so that the electric motor remains durable.

What is Star delta?

Star Delta is an electrical circuit system by combining star (Star) and delta (Triangle) connections. The purpose of combining these connections is to reduce the surge in electric current when the initial star on the electric motor and maintain the stability of the torque on the electric motor to remain stable.

Benefits of Using Star Delta in 3 Phase Electric Motor

reduce the surge in electric current due to the amount of electric power needed for initial starting
keep the voltage stable
The voltage entering the stator and rotor on the electric motor remains stable so as not to reduce the torque and rotation of the electric motor.
as a safety if there is overheat and overload in the electric motor.

Star Delta Panel Components

1. MCCB (Molded Case Circuit Breaker)

Is an electrical device that serves to protect and cut off electricity in the event of certain conditions on the electric motor and star delta circuit, such as overload, short circuit on the electric motor and failure in the wiring circuit on the star delta.
2. Magnetic Contactor

Is an electrical component that works as an automatic switch to control electricity when there is a magnetic force to attract and remove contacts. Magnetic Contactor It works with electromagnetic induction principles to connect large capacity electric current with small power.
3. TOR (thermal Overload Relay)

Is an electrical device that functions as a safety circuit due to electric current that exceeds the capacity of the ragkaian.
4. Time Relay

Is working to set the time to move from Star (Star) to Delta (Triangle) connection.
5. Push Button

Is an electrical device in the form of a push button to turn on and off the electric current circuit connected to the system. There are two types of push buttons in the star delta circuit, namely the ON and OFF push buttons.
6. Indicator lights

Work to provide instructions or signs about the conditions that occur at that time.
7. wiring power and Control Series Star Delta.

What is a 3 phase electric motor?

Electric motor is an electric machine that works by using electrical energy which is then converted into mechanical motion energy. This electric motor has a voltage of 380 volts to turn on so that it has a large and stable torque in its use. 3 phase electric motor is widely encountered and applied in industrial or factory fields.

Advantages and disadvantages of electric motors

Advantages

Has stable performance and high efficiency.
has a large torque so it is suitable for application to drive large-scale machines.
has a large load capacity.
saves more power

Shortcomings