What is a key advantage of using a three-phase system for power supply?

The key advantage of using a three-phase system for power supply is that it provides smoother operation of motors and equipment. In a three-phase system, the power supply is delivered in three alternating currents that are out of phase with each other. This arrangement creates a continuous flow of power, minimizing fluctuations and ensuring that electrical motors receive a steady torque throughout their rotation.

This smooth operation is particularly beneficial for industrial applications where heavy machinery and large motors are used, as it leads to increased efficiency, reduced wear and tear on the equipment, and improved performance. The three-phase system is also capable of delivering more power than a single-phase system, facilitating the operation of larger loads without the same level of stress or adverse effects on the machinery.

Furthermore, a three-phase motor can start with less current compared to single-phase motors, which helps in decreasing the initial electricity demand and supports better overall operational efficiency.