High-Voltage AC Power 1

Summary

This 49-minute DVD provides a systematic means of reviewing the fundamental principles of electromagnetism and electromagnetic induction. It is intended as a general review of electromagnetic concepts to those with some background in basic electrical theory. Covers basic magnetism and electromagnetic theory. Explains the characteristics of magnetic fields, the factors determining electromagnetic field strength, Lenz's Law, and principles used in electric motors, generators, and transformers.

Training Sessions

Factors That Affect Power Loss – 12 minutes
Defines power loss. Explains the relationship between voltage, current, and resistance in an electrical circuit. Explains the relationship of transmission voltage to power loss.

Inductance and Inductive Reactance – 13 minutes
Defines the terms inductance and inductive reactance. Explains how inductance develops in transmission lines. Gives examples of how inductive reactance can be changed in transmission lines.

Capacitance and Capacitive Reactance – 10 minutes
Defines the terms capacitance and capacitive reactance. Explains how capacitance develops in transmission lines. Gives examples of how capacitive reactance can change in transmission lines.

Resistance – 9 minutes
Define resistances. Identifies and explains the factors that determine the resistance of a conductor.

Impedance – 14 minutes
Defines impedance. Describes the relationships between impedance, current, and voltage. Defines resonance. Explains the relationship between impedance and power loss. Defines corona and explains how it can be minimized.

Support Materials Available

Student workbook, instructor guide.