Short-Circuit & Per-Unit Studies

Impedance Chain from Utility Source to a 13.8 kV Fault

The impedance path from a utility source with known short-circuit capacity through the line and a 34.5/13.8 kV transformer to a three-phase fault on the secondary bus, with the Thevenin impedance formulas and the fault current and MVA equations.

More in Short-Circuit & Per-Unit Studies

Line-to-Line Fault at Transformer Secondary Terminals (thumbnail)

Line-to-Line Fault at Transformer Secondary Terminals

Bolted Three-Phase Fault at a 1000 kVA Transformer: 20.1 kA (thumbnail)

Bolted Three-Phase Fault at a 1000 kVA Transformer: 20.1 kA

Motor Contribution to Fault Current on a 480 V Bus (thumbnail)

Motor Contribution to Fault Current on a 480 V Bus