Three Phase Motor Connection Diagram


3-phase motor wiring diagram

Three Phase Motor Connection Schematic, Power, and Control Wiring Installation Diagrams. Star-Delta (Y-Δ) 3-phase Motor Starting Methods.

Three-Phase Motor Connection Diagram and Wiring Procedure · Find out the terminals of each winding of the motor.


We will show you the three-phase motor terminal connection or wiring procedure for- 

  •  3-phase motor wiring diagram 6 wire
  •  3-phase motor wiring diagram 9 wire
  •  3-phase motor wiring diagram 12 wire


3-phase star delta motor connection diagram

This article not showing you the 3-phase star delta motor connection diagram. If you are interested to know the three-phase star delta starter motor connection schematic diagram then you can visit the full document in another article on-

Star Delta Starter Line Diagram and Its Working Principle


In this article, there is no need for more literature,

So, let's go to show the motor terminals connection procedure.

Diagrams of the three-phase motor (6  leads)


Single winding


                                               Single speed

6 leads Single winding Single speed Motor Connection




Single winding

           High-speed                                                   Low speed
6 leads Single winding High and Low speed Motor Connection




Double winding

                    High-speed                                     Low-speed
6 leads Double winding Single speed Motor Connection




Diagrams of the three-phase motor (9  leads)

Single voltage

Single winding

9 leads Single winding High and Low speed Motor Connection



Double winding


9 leads Double winding High and Low speed Motor Connection


Double voltage

Double winding

             Low Voltage                                          Higher Voltage

9 leads Double Voltage Double winding High and Low speed Motor Connection



Diagrams of the three-phase motor (12  leads)

Single polarity


Single speed


12  leads Diagrams of the three-phase motor Single polarity Single speed

Double polarity

High speed


12  leads Diagrams of the three-phase motor Double polarity Single speed

High and low voltage three-phase is typically 230 volt or 400 volts 3 phase (in most of Europe and Africa). The motor has three stator windings (six connections) and can be wired in Star or Delta. In Star, the windings are connected to a phase, and the other ends are connected together to form a star connection. This is the high voltage or 430 volt 3 phase connection. As can be deduced from the connections, you have 430 volts across two motor windings at all times. In Delta, The motor windings are connected with the ends together, in the shape of a triangle. 



1 comment:

  1. This is a great resource for anyone looking to learn more about three-phase motor connection diagrams. The diagrams provided by uni assignment help are clear and easy to understand, making it easier to learn and apply the information. Highly recommend!

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