Standard No.:	GB 20943-2007
English Name:	Minimum Allowable Values of Energy Efficiency and Evaluating Values of Energy Conservation of Single Voltage External AC-DC and AC-AC Power Supplies
Chinese Name:	单路输出式交流-直流和交流-交流外部电源能效限定值及节能评价值
Chinese Classification:	F01    Technical management
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	2007-05-21
Implemented on:	2007-12-1
Status:	abolished
Superseded by:	GB 20943-2013 Minimum allowable values of energy efficiency and evaluating values of energy conservation for single voltage external AC-DC and AC-AC power supplies
Superseded on:	2014-9-1
Abolished on:	2014-09-01
Language:	English
File Format:	PDF
Word Count:	2500 words
Price(USD):	304.00
Delivery:	via email in 1 business day

1.1 This standard specifies the minimum allowable values of energy efficiency, evaluating values of energy conservation, target minimum allowable values of energy efficiency, test methods and inspection rules of the external power supplies (hereinafter referred to as power supply) used for changing the voltage of AC network into fixed and single low voltage direct current (no greater than 36 V) or low voltage alternate Current (no greater than 36 V) output voltage.

This standard is applicable to the power supplies with rated output power beingno greater than 250W.

1.2 This standard is not applicable to the DC-DC changer

Foreword I
1 Scope
2 Terms and Definitions
3 Technical Requirements
4 Test Methods
5 Inspection Rules
Appendix A (Normative) Test Method for the Average Efficiency and the No Load Active Power of the Power
A.1 Test Basic Requirements
A.2 Test Method
A.3 Judgment for the Test Result