What is the voltage ratio for dual-voltage motors?

The voltage ratio for dual-voltage motors is typically 2 to 1. This characteristic is fundamental to how dual-voltage motors operate, particularly in the context of their ability to function on two separate voltage systems.

In a dual-voltage motor, the design allows for the motor to operate at two different voltage levels—often, one for lower voltage and another for higher voltage. For example, a common dual-voltage motor might be designed to run on both 120 volts and 240 volts. The 2 to 1 ratio indicates that when the motor is configured to operate at the lower voltage, it draws twice the current it would when running at the higher voltage.

This capability is valuable in industrial applications where different power sources might be available, allowing for greater flexibility and efficiency depending on the electrical supply at a given location. The ratio helps in determining the appropriate connections and load calculations required for the motor, ensuring safe and optimal performance in varying operational environments.