This draft standard GB 20943—XXXX circulated to WTO, specifies the technical requirements and test methods for power supplies converting AC voltage to low-voltage DC (not more than 60V) or low-voltage AC (not more than 42.4V) output voltage under the conditions of 220V and 50Hz power supply. This standard applies to external power supplies with rated output power of no more than 500W and internal power supplies with rated output power of no more than 3000W for microcomputer system equipment and servers. Final date for comments: September, 30 2024
China – Proposes GB Standard Update on Energy Efficiency Requirements for AC-DC and AC-AC Power Supplies
