ANSI short circuit analysis, live
Fault currents calculated per ANSI/IEEE methodology — momentary, interrupting, and symmetrical values at every bus. Duty checks against device ratings run automatically.
What you get
Short circuit calculations follow ANSI/IEEE standards for fault current determination.
First-cycle (momentary) asymmetric fault currents for device close-and-latch evaluation.
Interrupting fault currents for breaker evaluation at the appropriate contact parting time.
Steady-state symmetrical fault currents for fuse and other device evaluation.
Device ratings compared against calculated fault duties automatically. No manual checks.
Fault currents update as you build and modify the model. No separate study run required.
ANSI short circuit the modern way
The ANSI method hasn't changed, but the tools should. ekx performs ANSI short circuit analysis live in your browser, with automatic duty checks that keep pace with your design.
- Momentary, interrupting, and symmetrical values at every bus
- Device duty checks run automatically as fault currents change
- Three-phase and single line-to-ground fault types
- Professional study reports with all ANSI values
Start free. Upgrade when you need more.
Free tier includes 1 project with up to 2 buses. Paid plans start at $27/month for consultants and $149/month for unlimited access.
View All PlansFrequently asked questions
Yes. ekx calculates momentary (first-cycle), interrupting, and symmetrical (steady-state) fault current values per ANSI/IEEE methodology.
ekx supports ANSI/IEC methodology. Both approaches are available for fault current calculations.
X/R ratios are calculated from the system impedance model and used for asymmetric fault current calculations per the ANSI method.
Yes. Export a complete ANSI short circuit study report as PDF, including all fault current values and device duty evaluations.
ANSI short circuit analysis, live in your browser.
Momentary, interrupting, and symmetrical values. Automatic duty checks.
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