Electrical Power

A practical guide to electricity generation, machines, and power systems.

W.J.R.H. Pooler

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ELECTROMAGNETISM

Notation

The symbol “  ” or adjacent variables will be used to signify “multiplied by”.

The symbol “  ” signifies vector dot product. AB = A  B Cos 

Variables are in italics for example V, I and X.

Magnets, Magnetic Fields and Direct Currents

Units of Force, Work and Power

cm/gm/sec (cgs) units are dyne = force to accelerate 1 gm at 1 cm/sec2

Why Should You Read This Book?

• Build a unified understanding from field theory through machines to system faults

• Use formulas and worked examples for AC/DC circuits, transformers, and motors

• Learn how protection, earthing, and switchgear respond to faults

• Follow fault-current calculation logic and commissioning test procedures

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