Power System Overvoltages and Insulation Coordination – Part 2
This is Part 2 of this series, the first part could be found here.
Insulation coordination is the "selection of the dielectric strength of equipment in relation to the voltages which can appear on the system for which equipment is intended and taking into account the service environment and the characteristics of the available protective devices".
Why Insulation...
Posted in Design on April 23rd, 2024
Role of X/R Ratio in Circuit Breaker Short Circuit Duty Evaluation
Circuit breaker nameplates sometimes indicate only rating on symmetrical short circuit current. In such cases, the rating only reflects the AC component of the short circuit current. A common misinterpretation occurs when one compares the symmetrical short circuit current against the symmetrical short circuit current rating of the circuit breaker for the purposes of circuit breaker duty evaluation. This...
Practical Guide to Electrical Grounding
About the Book
This book is designed for the contractor who finds that installing grounding systems, which are in compliance with all relevant codes and standards, is a complex and somewhat mystifying assignment. While in larger facilities, the design of a proper grounding system is certainly complex and should be left to a qualified engineer, the everyday grounding installations and...Power System Overvoltages and Insulation Coordination – Part 1
Note: This is the first part of power system voltages and insulation coordination.