Substation Short Circuit
short-circuit calculator
About
This app assists electrical engineers and technicians in estimating fault current for equipment specification. It calculates various fault current values and compares them against equipment ratings, also providing conductor data and saving calculation history.
What's New in Substation Short Circuit
3.1
August 30, 2026
This update focuses on clearer results and more reliable equipment checks. • Redesigned results — see Nominal Current and Short Circuit Current (bolt fault) in amperes, with the formulas used and a detailed impedance breakdown • Fixed fault current calculation — bolted-fault values now match the percent-impedance method used in the field • Improved equipment verification — breaker and fuse interrupting ratings are compared against available fault current; frame and ampacity ratings use a 125% nominal load margin • Clearer guidance in the equipment section so you know what each rating is checked against Save & load, ampacity tables, optional iCloud sync, and Spanish localization are unchanged.
MoreDeveloper apps
FAQ
What is Substation Short Circuit used for?
Substation Short Circuit helps electrical engineers and technicians estimate available fault current before specifying equipment. It calculates symmetrical fault current, asymmetrical fault current, peak current, and interrupting rating.
How does Substation Short Circuit compare equipment ratings?
The app allows you to compare circuit breaker current and interrupting ratings, fuse ratings, and cable ampacity against the calculated fault current. It flags equipment as adequate or inadequate to identify potential issues.
Does Substation Short Circuit provide conductor data?
Yes, it includes a built-in ampacity table for copper and aluminum conductors, covering common insulation types, temperature settings, and installation conditions. You can view resistance and reactance, then copy conductor details.
Can I save my calculations with Substation Short Circuit?
Yes, you can save calculations with a description, search saved jobs later, and load them back into the calculator. Optional iCloud sync makes saved calculations available across your Apple devices.
What languages does Substation Short Circuit support?
Substation Short Circuit is available in both English and Spanish, making it accessible to a wider range of users.
Is Substation Short Circuit available on multiple Apple devices?
Yes, the app is built for both iPhone and iPad, offering light and dark appearance options to suit user preferences.
Does Substation Short Circuit have ads?
No, Substation Short Circuit is ad-free, providing an uninterrupted user experience for its calculations and features.
What is the price of Substation Short Circuit?
Substation Short Circuit is a paid application, available for $4.99. This one-time purchase grants access to all its features.
