When the electric motor starts directly, it takes up a very high current. This inrush current will probably damage equipment, trip breakers, and reduce motor life. To avoid this problem, engineers use something called soft starting.
The soft start limits the current and torque of the motor at the time of starting. Instead of giving full voltage in an instant, it increases the voltage gradually. Because of this, the motor starts smoothly and safely.
Subscribe to Read Full Engineering Publication
This verified technical document contains complete mathematical derivations, IS/NBC 2016 code references, equipment sizing schedules, and AutoCAD DWG blueprints.
Have Specific Equipment or Plant Capacities to Calculate?
Our AI Specialist can troubleshoot technical issues, calculate duct velocity, determine chiller load, or size cables specifically for "What Is Soft Starting? Simple Explanation for Electrical Engineers".
popeye21834
Licensed Engineering ContributorChartered Senior MEP Engineer & Review Board Specialist with extensive design, testing, and commissioning field experience across commercial and industrial infrastructure.
Leave a Reply