ATS Transformer

An Auto Transformer Starter is a type of electrical motor starter designed to reduce the inrush current and manage the initial torque when starting an electric motor, particularly in high-power applications. It uses an autotransformer to supply the motor with reduced voltage during the start-up process, significantly minimizing the electrical and mechanical stress on the motor and the electrical supply system.

Key Features:
Reduced Voltage Starting: The primary feature of an autotransformer starter is its ability to reduce the voltage applied to the motor at the moment of startup. By connecting the motor windings to the autotransformer’s secondary winding (which provides a reduced voltage), the motor starts at a lower voltage and, consequently, draws less current. This helps to mitigate the high inrush current that can damage both the motor and the power supply system.
Three-Phase System Integration: Auto transformer starters are typically used in three-phase systems, making them ideal for large, industrial motors. The starter operates by connecting the motor to an autotransformer, which reduces the phase-to-phase voltage applied to the motor, usually to around 50%-80% of the rated voltage, depending on the application requirements.

Applications:
Industrial Motors: Auto transformer starters are used extensively in industries that require reliable motor starting for high-power motors, such as in heavy machinery, HVAC systems, compressors, large pumps, and conveyors.
Water Treatment Plants: Motors used in water pumping systems and filtration processes can benefit from autotransformer starters, as these systems require smooth startups without affecting system pressure and performance.

Benefits:
Motor Protection: By reducing the starting voltage, the autotransformer starter reduces the mechanical and electrical stress on the motor, leading to extended motor life and reduced maintenance costs.
Smooth Operation: The gradual acceleration of the motor helps to reduce wear and tear on both the motor and the driven equipment, improving overall system reliability.