For dual-voltage electric motors, the wiring diagram furnished with the motor is very important. The motor-lead connection diagram in Figure 6 is for a dual-voltage 230/460 V three-phase AC induction ...

3 phase motor programmable controller circuit Fig. 2: Circuit diagram of the 3 phase motor programmable controller. As pin 3 of IC1 is high, relay RL1 gets energised for five seconds, which, in turn, ...

Before connecting the motor to the circuit, proper operation of the relays must be checked. The windings must be connected as shown in the circuit diagram. PCB Design. A single-side PCB for the ...

By means of motor-circuit conductors, these overload-relay terminals must be connected to the three-phase AC motor leads T1, T2 and T3 in the motor ... line side terminal of the three-pole ...

The Phasor diagram, ... In a three-phase VAC circuit, voltages should be separated from each other by 120 degrees, i.e., when voltage one is at 0 degrees, either voltage 2 or 3 will be at 120 degrees ...

The speed of an induction motor in certain types of drives can be adjusted by phase control of the applied voltage. Three pairs of inverse-parallel thyristors are required for three-phase bipolar ...

Protective functions of an induction motor are mainly intended to prevent overheating of its windings. Owing mainly to overloads or unbalanced voltages, there is increase in consequent overheating of ...