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2 cze 2014 · This wiring tutorial shows how to control a tap-wound 3-phase motor for two-speed and one-direction using Dahlander connection for contactors with the help of schematic, power, control and wiring diagrams.
A Dahlander motor (also known as a pole changing motor, dual- or two speed-motor) is a type of multispeed three-phase induction motor, in which the speed of the motor is varied by altering the number of poles; this is achieved by altering the wiring connections inside the motor.
A 2-speed 3 phase motor is designed to have two different speed settings, typically a high speed and a low speed. This is achieved by connecting the motor to a dual-speed controller or a combination of contactors and switches.
The diagram of a two-speed motor shows the internal components and wiring connections that allow the motor to operate at different speeds. The diagram typically includes labels for the stator, rotor, and other essential parts, as well as arrows indicating the flow of electrical current.
Two-speed, two-direction three-phase motors have two distinct speed settings (usually high and low) and can rotate in both clockwise and counterclockwise directions. Achieving this level of control requires the use of specialized control techniques.
The wiring diagram of a 2-speed electric motor typically consists of several wires, including power supply wires, control wires, and wires connecting the motor’s windings. These wires are arranged in a specific configuration to control the motor’s speed and direction of rotation.
The 2 speed motor control wiring diagram will show the connections between the motor starter, the motor itself, and any other control devices, such as push buttons or limit switches. It will also indicate how the contactors and overload relay are wired to the power supply and the motor.
