Contents

1. Basic Principles of Protective Relays 2. Development of Static Relays 3. Basic Semiconductor Devices and Circuits 4. Comparators 5. Output Devices; D.C. Supply; Transient Overvoltages 6. Power System Faults 7. Current and Potential Transformers 8. Overcurrent Directional Relays 9. Differential Relays 10. Distance Relays 11. Steady-state Sources of Distance Relays Error 12. Multi-input Comparators 13. Heating, Harmonics and Load-Shedding 14. E. H. V. Line Protection 15. Pilot Different Protection 16. The Future