CEC certification is the Appliance Efficiency Regulation legally implemented by the California Energy Commission on December 30, 2005. The purpose of this regulation is to improve the efficiency of electricity products, save energy, reduce gas emissions and greenhouse effect.
With more and more electronic products appearing in our daily life, "saving energy" will become an urgent issue that all people must face in the 21st century. When the California Energy Commission (CEC) implements new mandatory standards for the energy efficiency of AC-dcs and AC-AC external power supplies on July 1, 2006, almost all electronics will be hit.
The standard will cover all products that use external power supplies (such as chargers and adapters), including mobile phones, home wireless phones, portable music players, handheld game consoles, toys, etc., and require them to use energy in a more efficient way when in standby and in use.
This means that after mid-2006, all transformers, external power supplies, adapters, and chargers used and sold in the United States will have to change their design.
In addition to energy savings, CEC's new regulations will also have a significant environmental impact. According to the company, if all of California's external power supplies complied with the new standards, the state could save more than 360,000 tonnes of carbon dioxide emissions a year, the equivalent of the annual output of 60,000 cars.
The regulation stipulates that electrical products sold in California must first meet the Equipment energy Efficiency Code, which specifies energy efficiency target requirements, measurement methods and phased implementation plans for 58 categories of electrical products. According to the requirements of this regulation, electrical products must be tested by qualified laboratories in accordance with the relevant regulations or standards of the United States, and can be sold in California.
Test methods for CEC certification
The introduction
CEC, short for California Energy Commission, is charged with moving the energy market toward healthy competition.
Starting from July 1, 2006, all external power supplies (AC/AC, AC/DC adaptor) exported to the United States of California must meet the California Energy Efficiency Code issued by the California Energy Commission. This California Energy Efficiency Code is a new energy efficiency code developed on the basis of Energy Star.
Below, we will analyze the specific scope, definition, testing, flags, and considerations of CEC certification.
The scope of
The external power supply of CEC is defined as a single-phase voltage input AC/DC or an external power adapter for AC/AC.
define
Here, we introduce some of the nouns in the CEC test criteria, such as
⑴ Active Mode
⑵ Active Mode Efficiency
⑶ No Load
⑷ No Load Power
⑸ UUT：UNIT UNDER TEST
⑹ Ambient Temperature
⑺ Power Factor (True)
⑻ Total Harmonic Distortion (THD)
⑼ Apparent Power (S)
⑽ Nameplate Input Voltage
⑾ Nameplate Input Frequency
⑿ Nameplate Output Voltage
⒀ Nameplate Output Current
Test
⑴ Summary:
Test conditioning, unless otherwise stated, is tested in accordance with the following test conditions.
⑵ Test
Instrumentation: Power measurements must be performed with a calibrated voltammeter or power analyzer. The instrument must be calibrated according to IEC 62301, and the error must be less than or equal to 2% when the test power is 0.5W. When the test power is less than 0.5W, the error must be less than 0.01W. The accuracy of the instrument for power testing must be 0.01W or better. The error of the voltage and current tested must be less than or equal to 2%.
⑶ Test room
According to the standard requirements of IEC 62301, the air flow in the test room must be 0.5m/s or smaller, the ambient temperature must be controlled within the range of 23 ° C ±5 ° C, and the samples must be tested on the test bench without heat conduction. For products used outdoors, additional testing requirements must be stated in the report.
⑷ Test voltage
According to IEC 62301, the fluctuation range of the test voltage shall not exceed ±1% of the specified test voltage and ±1% of the specified test frequency. If the input voltage of the nameplate is a wide voltage, the test voltage is 115V/60Hz and 230V/50Hz. If the nameplate indicates a single voltage input, the test voltage is one of the two test voltages close to each other.
⑸ Judgment of results
As of July 1, 2006, California must meet the average energy efficiency requirements and no-load power requirements in the following table for external power exports (see Table 1).
As of January 1, 2008, California, USA, must meet the new average energy efficiency requirements and no-load power requirements in TABLE2 below for external power exports (see Table 2).
All tests must take into account the load of 100%, 75%, 50%, and 25% of the output current marked on the nameplate (note: the error range of the load here cannot exceed ±2%), record their input power, input current, power factor, output voltage, and THD (total harmonic distortion) respectively, and then follow
Energy efficiency = (output voltage x output current)/input power
To calculate the current energy efficiency value, and then average the energy efficiency values measured under the four load conditions of 100%, 75%, 50% and 25% to get the average energy efficiency value. In addition, the input power value of the load with the output current of 0% must be tested. The average energy efficiency value and no-load power value obtained from the above tests shall be judged according to the limit requirements in TABLE1 and TABLE2 to determine whether the energy efficiency mark is met.
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