Fault analysis in non-safety-related circuits during design basis events

It is typical when calculating short circuit currents to incorporate the full cable length into the fault analysis. However, you must be careful when analyzing short-circuits during design basis events. Continue reading “Fault analysis in non-safety-related circuits during design basis events”

An explanation of the origin of a generator’s subtransient reactance

The term “subtransient reactance” is denoted by the symbol X’’d and is used to calculate available short-circuit generator fault currents. But where does it come from? What’s its origin? Continue reading “An explanation of the origin of a generator’s subtransient reactance”

In-depth explanation of the short-circuit behaviors of five important types of electrical equipment

I described in a previous article the benefits of learning how to do short-circuit analysis by hand. There are five primary elements that you need to know how to model when doing so. I go into the details here . . . . Continue reading “In-depth explanation of the short-circuit behaviors of five important types of electrical equipment”