Theoretical short-circuit power

Calculates approximate fault current from voltage and loop impedance.

Calculates theoretical apparent power of a balanced three-phase system.

Calculates theoretical maximum loop impedance from voltage and trip current.

Checks the provided Ib, In, Iz and I2 values without standards-table sizing.

Helper calculation for current from voltage and loop impedance; it is not protection assessment or standards-based protective-device selection.

Helper calculation for voltage from fault current and resistance; it is not a standards-based safety interpretation.