WAZIPOINT Engineering Science & Technology: 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

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

### Diagrams of the three-phase motor (6  leads)

#### Single winding

Single speed

#### Single winding

High-speed                                                   Low speed

### Double winding

High-speed                                     Low-speed

### Diagrams of the three-phase motor (9  leads)

#### Double winding

Low Voltage                                          Higher Voltage

# Single polarity

Single speed

#### Double polarity

High 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.