Three-phase control typically produces better results. Electrical soft starters reduce torque by temporarily changing how the motor connects within the electric current or otherwise reducing current input or voltage through electrical means. Electrical soft starters can control one to three phases. Mechanical soft starters may use clutches and various kinds of couplings that employ a fluid, steel shot or magnetic forces to transmit torque. Soft starters may consist of electrical or mechanical components or a combination of both. They are usually used only at startup, but some can also be used when stopping the motor. They do so by enabling the power to slowly increase by gradually ramping up the voltage supplied to the motor. Soft starters, also call reduced voltage soft starters (RVSS), are solid-state devices that protect AC electric motors from damage due to sudden increases in power during startup. In this article, we’ll define and compare these two technologies to help you choose the right one for your company’s applications. While these two devices have a similar purpose, they differ in many ways. Two of these starting methods involve using soft starters and star delta starters. To protect against these unwanted effects, you need to select a starting method that enables your motor to start up safely. This sudden influx of power can damage the motor, lead to voltage dips and cause other issues. Whenever an electric motor starts up, it draws a significant amount of power.
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