Certification introduction

CEC certification is the appliance efficiency regulation implemented by the California Energy Commission on December 30, 2005. The purpose of this regulation is to improve the efficiency of electric products, save energy, reduce gas emissions and greenhouse effect.

Significance of CEC certification

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 supply on July 1st, 2006. At that time, almost all electronic products will be impacted.

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 use energy in a more efficient way in standby and use states.

This means that after the middle of 2006, all transformers, external power supplies, adapters and chargers used in the United States and sold to the United States must change their designs.

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 external power supplies in California can comply with the new standards, California will be able to reduce more than 360000 tons of carbon dioxide emissions per year, which is equivalent to the annual emissions of 60000 cars.

The regulation stipulates that electrical products must first meet the equipment energy efficiency regulations when they are sold in California, USA. the regulation stipulates the energy efficiency index requirements, measurement methods and phased implementation plan for 58 categories of electrical products. According to the requirements of this regulation, electrical products must be tested by a qualified laboratory according to the corresponding regulations or standards of the United States, and can be sold in California, the United States only after they are proved to meet the requirements.

Applicable product range

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 use energy in a more efficient way in standby and use states. The definition scope of CEC's external power supply is: ac/dc with single-phase voltage input or ac/ac external power adapter.

Application materials

1. Product Name: provide the full name of the product

2. Product model: list in detail the model, variety or classification number of all products that need to be tested

3. Intended use of the product: such as home, office, factory, coal mine, ship, etc

4. Parts list: list in detail the parts and components of the product, their model (classification number), rating, and the name of the manufacturer. For insulation materials, please provide the name of raw materials

5. Electrical performance: for electronic and electrical products, provide point schematic diagram (circuit diagram), ingredient list, etc

6. Structure diagram: for most products, it is necessary to provide the structure diagram or explosion diagram, ingredient list, etc

7. Photos, instructions, safety matters or installation instructions of the product, etc

Test requirements

⑴ summary: unless otherwise specified, the test adjustment is carried out according to the following test conditions.

⑵ test instrument: the power measurement must be carried out with a calibrated volt ampere meter or power analyzer. The instrument must be calibrated according to 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 reach 0.01W or better. The error of the tested voltage and current must be less than or equal to 2%.

⑶ 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 samples must be tested on the test bench without heat conduction. For products used outdoors, if there are additional test requirements, they must be explained in the report.

(4) according to the standard requirements of 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 indicated on the nameplate is 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 above two test voltages.

(5) judging from the results, the California energy efficiency law stipulates that from July 1st, 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)

Since January 1st, 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 its input power, input current, power factor, output voltage, and thd (total harmonic distortion) respectively, and then

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, the input power value when the output current is 0% of the load must also be tested. The average energy efficiency value and no-load power value obtained from the above tests can be used to judge whether it meets the energy efficiency mark according to the limit requirements of table1 and table2.