This text provides engineers with comprehensive, practical information on the design, characterization, and operation of electromagnetic protective devices used in power systems. This reference also details how to safeguard against energy surges, and also how to capture, store, transport and use these electromagnetic energies. Coverage of such protective devices as lumped resistors, low dielectric capacitors, saturable resistors, and specific hybrid foms is included. And, by using clear, practical diagrams, the book illustrates power system protection through relay co-ordination under all fault conditions, as well as electromagnetic device protection through design aspects. The role of symmetrical components in calculating unbalanced systems and the part solid-state technology will play in improving future power system operations are also discussed in detail.