Chapter 28

Hard to Find Information (on Distribution System Characteristics and Protection)*

28.1 Overcurrent Protection 28-1

Introduction • Fault Levels • Surface Current Levels • Reclosing and Inrush • Cold Load Pickup • Calculation of Fault Current • Current Limiting Fuses • Rules for Application of Fuses • More Overcurrent Rules • Capacitor Fusing • Conductor Burndown • Protective Device Numbers • Protection Abbreviations • Simple Coordination Rules • Lightning Characteristics • Arc Impedance

28.2 Transformers 28-15

Saturation Curve • Insulation Levels • Δ-Y Transformer Banks

28.3 Instrument Transformers 28-17

Two Types • Accuracy • Potential Transformers • Current Transformer • H-Class • Current Transformer Facts • Glossary of Transducer ...

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