CEC Certification;CEC Certification Test Method Introduction；

CEC certified by the United States, California Energy Commission (California Energy Commission)) at December 30, 2005 implementation of the law appliance efficiency regulations (Appliance Efficiency Regulation). The purpose of this legislation is to improve the efficiency of the implementation of electric products, energy conservation, reduce gas emissions and the greenhouse effect.

As more and more electronic products in everyday life, "save energy" will become an urgent problem in the 21st century everyone must face. California Energy Commission (California Energy Commission, CEC) coming in July 1, 2006 implementation of new mandatory standards for energy efficiency AC-DC external power supplies and AC-AC, and then, almost all electronic products will a hit.

The standard will cover all external power supply (such as chargers and adapters) products, including mobile phones, home wireless phones, portable music players, handheld games, toys, etc., and require these products in the standby state to use more efficient ways to use energy.

This means that later in 2006, all in the United States used to be sold in the United States as well as transformers, external power supplies, adapters, chargers have to change the design.

In addition to saving energy, the new norm CEC will also have a significant impact on environmental protection. According to the company's statistics, if all of California's external power supply can comply with the new standards, the annual California will be reduced by more than 360,000 tons of radioactive carbon dioxide, this number is equivalent to an annual capacity of 60,000 cars of radiation.

The regulations, electrical products sold in the US in California must meet the equipment energy efficiency regulations, the regulations for the 58 categories of electrical products specified energy efficiency target, measurement methods and the planned phased implementation. According to the regulations, electrical products must press the corresponding US regulations or standards for testing by a qualified laboratory, proved to meet the requirements before sales in California.

CEC certification test method
introduction

CEC is referred to as the California Energy Commission, whose mandate is to make towards the development of healthy competition in the energy market direction.

Starting July 1, 2006, where the external power supply (AC / AC, AC / DC adaptor) exported to the US, California, must meet the California energy efficiency regulations California Energy Commission promulgated, the California energy efficiency regulations in the United States It developed on the basis of the Energy Star a new energy efficiency regulations.

Hereinafter, we have to analyze the specific scope CEC certification, definition, testing, marking and precautions.

Scope

EC defined the scope of the external power supply is: single-phase voltage input AC / DC or AC / AC external power adapter.

definition

Here, we introduce some of the CEC testing standards in terms, such as

⑴ Active Mode: operating mode. It refers to the power supply in work mode.

⑵ Active Mode Efficiency: operating mode energy efficiency. Mode energy efficiency equal to the ratio of the real power output and real input power operating modes. Usually a percentage to reflect.

⑶ No Load: load mode. It refers to the product in the connected input voltage, but did not take the case load mode.

⑷ No Load Power: load power. It refers to the product in the no-load mode of input power.

⑸ UUT: UNIT UNDER TEST is an abbreviation.

⑹ Ambient Temperature: ambient temperature. It refers to the time the test ambient temperature.

⑺ Power Factor (True): power factor. Its value is equal to the true loss power / apparent power ratio.

⑻ Total Harmonic Distortion (THD): Total harmonic distortion.

⑼ Apparent Power (S): apparent power. Input voltage and input current of the product.

⑽ Nameplate Input Voltage: nameplate input voltage, referring to the customer on the label claims the product input voltage.

⑾ Nameplate Input Frequency: customer claims on the nameplate input voltage frequency.

⑿ Nameplate Output Voltage: Nominal client products on the nameplate output voltage.

⒀ Nameplate Output Current: Customer nominal product nameplate output current.

Test

⑴ Summary:

Test regulation, unless otherwise indicated, are in accordance with the following test conditions for testing.

⑵ test

Instrument: Power measurement must be tested using a calibrated voltmeter or power analyzer. The instrument must be proofread according to IEC 62301 standards, testing 0.5W of power at the time, the error must be less than or equal to 2%. In the test, when power is less than 0.5W, the error must be less than 0.01W. Precision power measurement instrument must meet 0.01W or better. Error test voltage and current must be less than or equal to 2%.

⑶ test room

According to the standard requirements of IEC 62301, the test room air flow must be 0.5m / s or less, the surrounding ambient temperature must be controlled within the range of 23 ℃ ± 5 ℃, the sample must be placed in the experimental stage, there is no thermal conduction test . Products for outdoor use, if there is additional testing requirements, it must be stated in the report.

⑷ test voltage

According to the standard requirements of IEC 62301, the fluctuation range of the test voltage does not exceed the specified test voltage of ± 1%, ± 1%, and the specified test frequencies. If the nameplate is the subject of wide voltage input voltage, the test voltage of 115V / 60Hz and 230V / 50Hz both cases, if the nameplate is single voltage input, the test voltage is above two test voltages close to one of them.

⑸ result of the judgment

California can follow the example of the provisions from 1 July 2006, where the external power outlet in California must meet the following table of average energy efficiency provisions and no-load power requirements (see Table 1)
And from January 1, 2008, where the external power outlet in California must meet the following table TABLE2 in the average energy efficiency of new and no-load power requirements (see Table 2)
All tests must take into account 100% of the nameplate output current, 75%, 50%, 25% of the load (note: the error range where the load should not exceed ± 2%), were recorded its input power, input current, power factor, output voltage, and THD (total harmonic distortion), and then follow
Energy Efficiency = (output voltage × output current) / input power
To calculate the current value of energy efficiency, then 100%, 75%, 50%, 25% four load measured value of energy efficiency averaged to obtain an average value of energy efficiency, in addition, it must also test the output current is 0% of the load the input power value, the average value of energy efficiency and no-load power values obtained in accordance with the above tests TABLE1 and TABLE2 limits to determine whether compliance with the requirements which the energy efficiency level logo.