Data Center Electrical Calculator
Short-Circuit Fault Level Calculator
Estimate prospective short-circuit current (Isc) per IEC 60909 at a transformer's terminals, or downstream at the end of a cable, plus the minimum cable size for the fault withstand.
Design Inputs
Results
Transformer FLC
1391.25 A
Isc at Transformer Terminals
23.19 kA
Min. cable CSA for this fault level & clearance time72.5 mm²
Simplified per IEC 60909 (transformer-limited, radial LV network). Ignores upstream network and motor contribution — treat as a conservative preliminary estimate, not a substitute for a full study.
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