Load flow, short-circuit, voltage-drop, motor-starting, harmonic, ground-grid, stability, and reliability analysis — the calculation studies that turn a design into numbers a utility, an authority having jurisdiction, or an owner's engineer will actually sign off on.
Every study in this module answers a question a drawing alone can't: not what the system looks like, but what it actually does under real operating and fault conditions. This module works each study with real numbers — a feeder voltage-drop calculation that finds a 6.84% violation, a short-circuit study that produces a switchgear-rated 16.7 kA asymmetrical duty, a motor-starting dip comparison across a strong and a weak bus, a six-pulse VFD harmonic spectrum checked against IEEE 519, an IEEE 80 ground grid calculation carried through to ground potential rise, an equal-area-criterion stability study that produces an actual critical clearing time in cycles, and a SAIDI/SAIFI reliability calculation from real outage data — so the arithmetic is never abstract.
By the end of this module you should be able to look at a study's output — a fault current, a voltage dip percentage, a critical clearing time — and know immediately whether it clears the applicable limit with real margin, or whether it's the kind of borderline number that changes what gets specified before construction rather than after a complaint, a trip, or a failure.