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GB 20943-2025 English PDF
GB 20943-2025 English PDF
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GB 20943-2025: Minimum allowable values of energy efficiency and energy efficiency grades for AC-DC and AC-AC power supplies
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Scope
This document specifies the energy efficiency grades and minimum allowable values of energyefficiency of power supplies (hereinafter referred to as products) that convert AC voltage into
low-voltage DC (not more than 60 V) or low-voltage AC (not more than 42.4 V) output voltage
under 220 V, 50 Hz power supply conditions, and describes the corresponding test methods.
This document applies to.
a) External power supplies with a rated output power of not more than 500 W and
internal power supplies for microcomputers and servers with a rated output power of
not more than 27.5 kW;
b) Extension cord socket-outlets, wall-mounted socket-outlets and power supply parts
of converters with universal serial bus (USB) port adapters.
This document does not apply to combined products with external power supplies as auxiliary
functions, combined products with batteries (including products for charging independent
batteries), external power supplies with wireless charging function, and Power Over Ethernet
(POE) external power supplies other than b), nor to products that power industrial equipment,
means of transportation, and medical apparatus and instruments.
Basic Data
Standard ID | GB 20943-2025 (GB20943-2025) |
Description (Translated English) | Minimum allowable values of energy efficiency and energy efficiency grades for AC-DC and AC-AC power supplies |
Sector / Industry | National Standard |
Classification of Chinese Standard | F01 |
Classification of International Standard | 27.010 |
Word Count Estimation | 22,271 |
Date of Issue | 2025-01-24 |
Date of Implementation | 2027-02-01 |
Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
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