CEC certification is the Appliance Efficiency Regulation (Appliance Efficiency Regulation) implemented by California Energy Commission on December 30, 2005. The purpose of the implementation of this regulation is to save energy, improve the efficiency of electricity products, and reduce the greenhouse effect and gas emissions.
Certification Introduction
CEC certification is the Appliance Efficiency Regulation (Appliance Efficiency Regulation) implemented by the California Energy Commission on December 30, 2005. The purpose of the implementation of this regulation is to improve the efficiency of electrical products, save energy, reduce gas emissions and the greenhouse effect.
As more and more electronic products appear in daily life, "saving energy" will become an urgent problem that everyone must face in the 21st century. The California Energy Commission (CEC) is about to implement a new mandatory standard for the energy efficiency of AC-DC and AC-AC external power supplies on July 1, 2006. By then, almost all electronic products will Suffer the shock.
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 these products to be in standby and in use. Use energy in a more efficient way.
This means that after mid-2006, all transformers, external power supplies, adapters, and chargers used in the United States and sold to the United States must be changed in design.
In addition to saving energy, CEC's new regulations will also have a significant impact on environmental protection. According to the company's statistics, if all California's external power supplies can comply with the new standards, California will be able to reduce more than 360,000 tons of carbon dioxide emissions each year, which is equivalent to the annual emissions of 60,000 cars. The regulations stipulate that electrical products must first meet the equipment energy efficiency regulations when they are sold in California. The regulations stipulate energy efficiency index requirements, measurement methods and phased implementation plans for 58 types of electrical products. According to the requirements of this regulation, electrical products must be tested by qualified laboratories in accordance with the corresponding American regulations or standards, and they can be sold in California after the certification meets the requirements.
introduction
CEC is the abbreviation of California Energy Commission, and its responsibility is to make the energy market develop in the direction of healthy competition. Since July 1, 2006, all external power supplies (AC/AC, AC/DC adaptor) exported to California in the United States must meet the California energy efficiency regulations promulgated by the California Energy Commission. This California energy efficiency regulation is in the United States. A new energy efficiency regulation developed on the basis of Energy Star.
Below, we will analyze the specific scope, definition, test, marking and precautions of CEC certification.
range
The definition scope of CEC's external power supply is: single-phase voltage input AC/DC or AC/AC external power adapter.
definition
Here, we will introduce some terms in the CEC test standards, such as
⑴ Active Mode: operating mode. Refers to the mode of the power supply under working conditions.
⑵ Active Mode Efficiency: Energy efficiency of working mode. The energy efficiency of the working mode is equal to the ratio of the real output power and the real input power in the working mode.
It is usually expressed as a percentage.
⑶ No Load: No-load mode. Refers to the mode when the product is connected to the input voltage, but not to the load.
⑷ No Load Power: No-load power. Refers to the input power of the product in no-load mode.
⑸ UUT: is the abbreviation of UNIT UNDER TEST.
⑹ Ambient Temperature: Ambient temperature. Refers to the ambient temperature tested at the time.
⑺ Power Factor (True): Power factor. Its value is equal to the ratio of true power loss/apparent power.
⑻ Total Harmonic Distortion (THD): Total harmonic distortion.
⑼ Apparent Power (S): Apparent power. The product of input voltage and input current.
⑽ Nameplate Input Voltage: The nameplate input voltage refers to the input voltage of the product declared on the label by the customer.
⑾ Nameplate Input Frequency: The frequency of the input voltage declared by the customer on the nameplate.
⑿ Nameplate Output Voltage: The customer's nominal product output voltage on the nameplate.
⒀ Nameplate Output Current: The customer's nominal product output current on the nameplate.
test
⑴ Summary:
Test adjustments, unless otherwise specified, are tested in accordance with the following test conditions.
⑵ Test instrument: The power measurement must be tested with a calibrated voltammeter or power analyzer. The instrument must be calibrated according to the IEC 62301 standard. When the test power is 0.5W, the error must be less than or equal to 2%. When the test power is less than 0.5W, the error must be less than 0.01W. The accuracy of the power test instrument must
Must reach 0.01W or better. The error of the tested voltage and current 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 less, the ambient temperature must be controlled within the range of 23℃±5℃, and the sample must be tested on a test bench without heat conduction . For products used outdoors, if there are additional test requirements, it must be stated in the report
Come.
⑷ Test voltage
According to the standard requirements of IEC 62301, the fluctuation range of the test voltage cannot exceed ±1% of the specified test voltage and ±1% of the specified test frequency. If the input voltage indicated on 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 the close one of the above two test voltages.
⑸ Result judgment
The California Energy Efficiency Law stipulates that from July 1, 2006, all external power supplies exported to California must meet the average energy efficiency regulations and no-load power requirements in the following table (see Table 1)
From January 1, 2008, all external power supplies exported to California must meet the new average energy efficiency regulations and no-load power requirements in Table 2 below (see Table 2)
All tests must take into account the load conditions of 100%, 75%, 50%, and 25% of the output current indicated on the nameplate (note: the error range of the load here cannot exceed ±2%), and record the input power separately. Input current, power factor, output voltage, and THD (total harmonic distortion), and then according to energy efficiency = (output voltage × 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 obtain the average energy efficiency value. In addition, it is necessary to test the load when the output current is 0% The input power value, the average energy efficiency value and the no-load power value obtained from the above test are determined according to the limit requirements of TABLE1 and TABLE2 to determine whether it meets which energy efficiency mark.