Types of Electrical Motors

1. Electrical Motor : Split Phase

This type of split phase electrical motor is mostly used for "medium starting" applications.  It has start and run windings, both are energized when the motor is started. When the motor reaches about 75% of its rated full load speed, the starting winding is disconnected by an automatic switch.


Uses of this Split Phase Electrical Motor

Common uses include: fans, blowers, office machines and tools such as small saws or drill presses where the load is applied after the motor has obtained its operating speed.

This motor is used where stops and starts are somewhat frequent. Common applications of split phase motors 

2. Electrical Motor : Capacitor Start

This type of motor has a capacitor in series with a starting winding and provides more than double the starting torque with one third less starting current than the split phase motor. Because of this improved starting ability, the capacitor start motor is used for loads which are hard to start. It has good efficiency and requires starting currents of approximately five times full load current. The capacitor and starting windings are disconnected from the circuit by an automatic switch when the motor reaches about 75% of its rated full load speed.

Uses of this Capacitor Phase Electrical Motor

Common uses include: compressors, pumps, machine tools, air conditioners, conveyors, blowers, fans and other hard to start applications.