**3 Phase Delta Motor Windings Diagram Wiring Schematic**. As with any three-phase motor those six windings which appear as the straight lines on the diagram are distributed around the perimeter of the motor to create a balanced rotation. The marking of the terminal board is also defined in IEC 60034-8.

Diagram DD6 Diagram DD7 M 1 LN E Diagram DD8 LN E L1 L2 L3 SC Z1 U2 Z2 U1 Cap. Please explain to me. In a Three-wire motor the Blue wire is made COMMON WIRE which is connected to the NEUTRAL WIRE of 220-volt power supply coming from the rear.

### Thats why distribution transformers are wired as Delta-Wye.

The connection diagram on the left shows how a deltadelta connection can be made either with three single-phase transformers or with one three-phase transformer. Each one is drown for different amount of pole pairs. The most common failure mode of a 3 phase AC motor is burnt winding or shorted winding leading to the damage of the motor. In balanced Δ circuits the line voltage is equal to phase voltage while the line current is equal to phase current times the square root of 3.