AS 60071.1:2024 adopts and modifies IEC 60071-1:2019, which specifies the procedure for the selection of the rated withstand voltages for the phase-to-earth, phase-to-phase and longitudinal insulation of three-phase AC systems having a highest voltage for equipment above 1 kV and the installations of these systems. It also gives the lists of the standard withstand voltages from which the rated withstand voltages are selected