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IEC 60909-0 Ed. 3.0 b:2026
Short-circuit currents in three-phase AC systems - Part 0: Calculation of currents
IEC 60909-0:2026 This part of IEC 60909 is applicable to the calculation of short-circuit currents in low-voltage three-phase AC systems, in high-voltage three-phase AC systems, and operating at a nominal frequency of 50 Hz or 60 Hz.
Systems at highest voltages of 550 kV and above with long transmission lines are outside the scope of this document.
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International Electrotechnical Commission [iec]