17 live power-systems checks, computed in the browser.
Fault level (MVA method)
Prospective fault current from a fault level in MVA.
Available from the DNO or DSO
Indicative engineering aids. Validate any project-critical assumption against operator standards, vendor data, and project-specific studies.
Result
13.1kA
11kV
System voltage
Formula
I_f = MVA_f / (sqrt(3) x kV)
Working
- Fault current I_f = 250 MVA / (sqrt(3) x 11 kV)
- I_f = 250 / (1.732 x 11)
- I_f = 250 / 19.05
- Prospective fault current = 13.1 kA