Calculate fault currents and arc-flash hazards from a single bus up to a full network. The IEC 60909 calculator solves every bus of a multi-source network with a single-line diagram, and the arc-flash tools apply IEEE 1584-2018 to give incident energy, arc-flash boundary and PPE for labels.
Quicker checks cover fault current by the base kVA method, generator contributions and switchgear short-circuit ratings against NEC 110.9 and 110.10.
Build a network of buses, utility sources, generators, motors, transformers, cables and ties; get Ik″, peak, breaking, thermal and earth-fault currents at every bus on an auto-generated single-line diagram, with step-by-step working.
Network arc-flash study: incident energy, boundary and PPE category at every bus on a colour-coded single-line diagram, with boundary and energy graphs, maintenance-mode what-if and printable NFPA 70E style labels.
Quick single-point incident energy, arc-flash boundary and PPE category — IEEE 1584-2002, the full IEEE 1584-2018 model and Ralph Lee.
Available fault current at successive points down a radial network using the classic Base kVA Method.
Per-generator and total fault current contribution at a common bus, subtransient-reactance method.
Prospective and peak fault current from transformer kVA/%Z, with OCPD AIC and equipment SCCR adequacy check per NEC 110.9/110.10.
How short-circuit currents are calculated, which value sizes which piece of equipment, how arc-flash incident energy follows from fault current and clearing time, and the mistakes that most often make a study wrong.