SPI KNOWLEDGE
Select Inverter or Soft Starter
Choose an Inverter or Soft Starter for an electric motor 👉 Choosing between Inverter or Soft Starter for electric motors depends on Your main purpose of use and budget. Both devices have different main duties as follows: 🔶️ #Soft Starter (Soft Starter) Soft Starter controls the supply of voltage to the motor during start...
Select Inverter or Soft Starter
for electric motor
👉 Choosing between Inverter or Soft Starter for electric motors depends on Purpose of use
and budget Yours is the main Both devices have different main functions as follows.
🔶️ #Soft Starter (Soft Starter)
The Soft Starter controls the voltage supply to the motor only during start-up and stop operation.
To reduce surge current (Inrush current) that is very high when starting the motor suddenly. which this surge
May cause damage to the motor, connected mechanical systems. and the overall electrical system
🔷️️ Advantages:
👉️Cheaper: Soft starters are generally much cheaper than inverters.
Compact size: Smaller in size and easy to install.
👉️Emphasis on Protection: Suitable for applications that require only gentle starting and stopping of the motor to extend its life.
🔶️Restrictions:
👉️️Unable to control speed: Soft Starter cannot change the speed of the motor after the motor has started.
👉️️Low efficiency: Does not help in saving energy while the motor is running.
🔷️ #Inverter (Inverter) or Variable Frequency Drive (VFD)
Inverter Also known as VFD (Variable Frequency Drive), it is a device that can control the speed and torque of the motor.
in detail By adjusting the frequency and voltage supplied to the motor. In addition to having the Soft Start feature, it also helps
The motor runs at optimum speed.with the workload (Load) at all times
🔹️Advantages:
👉Speed control: You can adjust the speed of the motor as desired. This makes it suitable for jobs that require frequent speed changes.
such as fans, water pumps, conveyor belts
👉Energy saving: Unnecessary motor speed reduction. Significantly reduces energy use and provides long-term payback.
👉Increase efficiency: Helps the production process be more accurate and controlled.
🔹️Restrictions:
👉High price: More expensive than Soft Starter.
👉More complicated: Installation and setup can be more complicated than Soft Starter.
👉Creates harmonics (Harmonics): May create noise in the electrical system. This may require the installation of additional filtration equipment.
🔷️Conclusion in decision making
👉Choose Soft Starter if:
You only need Gently starts and stops the motor. To reduce surge currents and extend the life of the equipment.
There is no need to control the speed of the motor.
Have a limited budget and need a cost-effective solution
👉Choose Inverter if:
You want to control your speed. of the motor in detail To adapt to the production process
Want to save energy in the long term, especially in jobs with constantly changing workloads?
Budget is not the main problem. and need complete functionality
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Source catalog reference. Confirm site conditions and the manufacturer’s instructions before applying this information.
