ThreePhase Circuits
About this class
Learn about the components and operating principle of 3phase generators, and using the formula for frequency, shows how rotor speed and the number of poles is related to frequency.
Prerequisites
The lesson requires a fundamental knowledge of electrical theory and technology.
Description
This is the ninth lesson in the iKNOW® Electrical Theory for Troubleshooters Library. This lesson defines 3phase AC, describes the components and operating principle of 3phase generators, and using the formula for frequency, shows how rotor speed and the number of poles is related to frequency.
Objectives
Define 3phase AC. Differentiate between 3phase and 1phase AC. Describe the components and operating principle of a 3phase generator. Use a sine wave to show how 3phase voltage changes over time. Explain the relationship between frequency and rotor speed. State and apply the formula for frequency. Describe how rotor speed and the number of poles related to frequency.
Content
General
ThreePhase Circuits
This is the ninth lesson in the iKNOWâ„¢ Electrical Theory for
Troubleshooters Library. This lesson defines 3phase AC, describes the
components and operating principle of 3phase generators, and using the
formula for frequency, shows how rotor speed and the number of poles is
related to frequency.

 ThreePhase Circuits