Industrial Power Distribution

Ralph Fehr received the B.S. degree in electrical engineering from the Pennsylvania State University in 1983 and the M.E. degree in electrical engineering (power) from the University of Colorado at Boulder in 1987. He has worked in the generation engineering field, designing power distribution and control systems for nuclear and fossil-fired power plants. Mr. Fehr also has worked for electric utilities for more than 15 years in the operations, planning, and design areas, including transmission, distribution, and substation engineering. Teaching has always been an important aspect of Mr. Fehr's career. On an adjunct basis, he has taught courses ranging from computer operating systems to mathematics to power system analysis for several institutions, including the University of New Mexico at Albuquerque, St. Petersburg Junior College, and the University of South Florida at Tampa. Since 1996, he also has taught a review course for candidates for the professional engineer examination through the Florida Engineering Society. Mr. Fehr is a senior member of the Institute of Electrical and Electronics Engineers (IEEE) and is a registered professional engineer in New Mexico and Florida. His biography is published in Who's Who in Science and Engineering.

(NOTE: Each chapter contains a Summary, Questions, and Problems section.)

 1. Utility Source.


Delivery Voltage. Source Configuration. Per-Unit Review. Short-Circuit Availability. Transformer Sizing. Primary Metering.



 2. Medium Voltage Distribution.


Voltage Selection. Transformer Connections. Transformer Phase Shifts. Grounding Transformers. Ferroresonance. Conductor Sizing.



 3. Balanced Fault Calculations and Selection of Protective Equipment.


Overview. Types of Faults. Data Preparation. First-Cycle Symmetrical-Current Calculations. Contact-Parting Symmetrical-Current Calculations. Power Circuit Breaker Selection. Fused Low-Voltage Circuit Breaker Selection. Molded-Case Circuit Breaker Selection. Medium-Voltage Fuse Selection. Current-Limiting Fuse Selection. Low-Voltage Fuse Selection.



 4. Unbalanced Faults.


Overview. Symmetrical Components. Sequence Impedances. Sequence Networks. Short-Circuit Faults. Open-Circuit Faults.



 5. Raceway Design.


Overview. Conduit and Duct Systems. Cable Tray Systems.



 6. Switchgear and Motor Control Centers.


Overview. NEMA Enclosures. Switchgear. Motor Control Centers.



 7. Ladder Logic.


Fundamentals. Considerations When Designing Logic. Logic Implementation. Seal-In Circuits. Interlocks. Remote Control and Indication. Reversing Starters. Jogging. Plugging.



 8. Motors and Motor Starting.


Review of Fundamentals. Cable Sizing. Motor Protection. Motor-Starting Methods. Variable Frequency Drives.



 9. Shunt Capacitors.


Overview. Configuration. Sizing and Placement. Capacitor Switching. Harmonics. Resonance. Protection.



10. Power Quality.


Overview. Historical Perspective. Quantifying Power Quality. Continuity of Service. Voltage Requirements. Transients. Harmonics. Power Factor.



Appendix A. Units of Measurement.


Appendix B. Circuit Analysis Techniques.


Appendix C. Impedance Data.


Appendix D. Ampacity Data.


Appendix E. Conduit Data.


Appendix F. Selected Problem Solutions.


Bibliography.


Index.