In 2013, the era of LED lighting has arrived! On the one hand, the characteristics of long life, high luminous efficiency and low energy consumption make LED lighting fixtures have advantages that traditional lighting fixtures can't match; on the other hand, LED industry and current national energy conservation and environmental protection, creating "green low carbon" The policy of life is consistent.
In 2013, in terms of LED lighting terminal products, outdoor lighting is worthy of attention in the development of LED street lamps. According to industry analysis, the LED street lamp market in China will continue to grow due to the policy of “Ten Cities and Ten Thousandsâ€. By 2013, China LED Street Lights The market size is expected to reach 8.663 billion yuan, accounting for about 50% of the global market size, becoming one of the most important LED street light markets in the world.
At the same time that the LED street lamp market is hot, the quality problems that accompany it have also poured a cold water into the industry. The news about the damage of LED street lights has repeatedly appeared in newspapers. Guangzhou Baiyun Lake Park street lights frequently "strike" The street lamp of Shenzhen Lotus Park was damaged, and the street lamp of Jinsha Street in Licheng District, Jinhua City, Zhejiang Province was damaged by half. No reason is repaired. The reason is that the domestic LED driver power supply technology used in street lamps is not closed, and the high-power LED driver power supply has become LED. The bottleneck of streetlight promotion.
Drive power is known as the "heart" of LED lamps, and it controls the life and death of lamps. In addition to lighting an LED, an LED driver is more exposed to radiation, interference to the power grid, and failures in unexpected situations.
Stimulated by fast-growing downstream demand and high profit margins, traditional power supply manufacturers and LED companies that have not yet entered the power supply field have entered the field of high-power LED driver power. At the same time as the variety of products on the market increases, the quality is inevitably mixed. Some high-power LED driver power sources have exposed many problems, including: low reliability, high defect rate, resulting in high maintenance costs; low efficiency, no energy saving, contrary to national energy conservation and emission reduction policies; design defects and materials Improper selection, resulting in low efficiency, high loss and heat, temperature rise and shortened life; poor waterproof performance, easy to enter the water to cause short-circuit failure of the power supply; poor lightning protection or no lightning protection device, LED street lights often due to thunderstorms, etc. Harsh environment, after lightning strikes, batch failure; grid voltage is generally unstable at night, such as narrow input voltage range, will cause power supply burnout; poor electromagnetic compatibility; low temperature can not work properly.
Domestic LED drive power has been criticized. Under the background of the flag shouting support for national brands, do we have to choose to import or domestically? What is the quality of China's high-power LED driver? Is the quality up to standard? Where is the improvement?
In order to solve these problems and to understand the current quality status of domestic LED street lamp driving power supply, New Century LED Network Evaluation Room specially invited China Saixi (Guangzhou) Laboratory as the authoritative third-party testing organization, and test engineer Hu Weihua as the chief evaluation. From the LED power supply enterprises in Taiwan, Shenzhen, Dongguan, Huizhou, Hefei and Ningbo, respectively, selected 7 LED street lamp driving power sources of 6 representative LED driving power sources for in-depth evaluation, providing objective and professional reference for the industry. .
First, product appearance and product description
This time, we selected 7 high-power LED driver power supplies from 6 manufacturers (output voltage: no more than 120V, output current: no more than 60A) for evaluation. The following is the product appearance and product description, see Table 1.
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