However, I can offer you the following useful information: IEC 60724 is an international standard titled: "Short-circuit temperature limits of electric cables with rated voltages of 1 kV (Um = 1,2 kV) and 3 kV (Um = 3,6 kV)"
I’m unable to generate or provide the full text or a direct PDF copy of (or any other copyrighted standard) due to copyright restrictions. Standards published by the IEC are protected intellectual property, and distributing them without authorization would violate copyright laws. Iec 60724 Pdf