Use the following procedure to calculate the level of fault current at the secondary of a second, downstream transformer in a system when the level of fault current at the transformer primary is known.

Welcome to schneider electric's fault current calculator. Do you know the primary fault current available?

Calculate your transformer's fault current with our calculator. Enter the unit's kVA, secondary voltage, and % impedance to see its available fault current.

Quickly calculate available fault current at any point in an electrical system using our fault current calculator. Ideal for safety and compliance.

Sep 18, 2022 · In most cases, the rating of available fault current is provided by the utility and it is labeled at the secondary terminal of the utility transformer. According to this rating, the available fault …

Determine fault current levels in transformers based on impedance and MVA ratings. Essential for short-circuit protection and system coordination.

Dec 15, 2025 · Transformers are often connected to equipment that is rated for certain AIC, Average Interrupting Current, or Available Fault Current. Take the secondary full load current of the …

Available fault current refers to the maximum short-circuit current at a specific system point. It depends on transformer size, conductor impedance, and system capacity, and must be calculated for …

2 days ago · Calculate the fault currents for transformers.

Enter the transformer rating in kVA (kilo Volt-Amp), Enter the secondary terminal voltage in volts and the percentage impedance in %. Then press the calculate button to get the transformer short circuit fault …