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That means any short-circuit current below 11.3 kA is safe. If your system’s prospective short-circuit current is 15 kA, you must increase cable size to 70 mm² or reduce clearing time.

Standard operating temperature limits (e.g., 70°C or 90°C) do not apply during these fault conditions. Instead, cables can withstand much higher temperatures for brief periods without permanent damage to the insulation. iec 60724 pdf free download

No. Even withdrawn or superseded standards remain under copyright. However: That means any short-circuit current below 11

The standard uses the :

In this article, we will explain the scope of IEC 60724, why you need it, how to access it legally without breaking your budget, and what technical knowledge it contains—so you can apply it safely in your work. why you need it