10 Reasons to Use Per unit
In the advent of computers, per unit or percent methods of calculations simplify short circuit calculations. J. Lewis Blackburn and Thomas J. Domin, in their book Protective Relaying, Principles and …
Rotating-machine Reactance Multipliers
The momentary or first cycle current is used to evaluate the closing or latching of the high voltage circuit breaker. Other selection criteria are the interrupting and symmetrical short circuit …
Short-circuit Apparent Power of the System
In this article, I have presented the effects of utility fault level on low voltage equipment. Assuming an infinite bus as the utility fault level will have a significant cost …