Interpretation of "Guangdong Province LED Street Light Local Standards"

Introduction: "Guangdong Province LED Street Light Local Standards" is a controversial standard. The main reason is that only a few large enterprises have participated in the formulation work. A few days ago, Nanfang Daily published an interpretation of the standard, which was reproduced on the website for readers' reference.

The "Guangdong Province LED Street Lamp Local Standards" has been implemented for nearly half a year. For the Pearl River Delta region, where the number of LED companies accounts for a quarter of the country's total, the role of this standard is becoming more and more important. At present, the development of LED lighting industry has become a hot spot: in the "National Medium- and Long-Term Science and Technology Development Planning Outline", semiconductor lighting products such as LED street lamps have been explicitly included in "key areas and priority themes", and it is proposed to "focus on research." High-efficiency, energy-saving, long-life semiconductor lighting products; National Development and Reform Commission, Ministry of Industry and Information Technology and other six ministries and commissions jointly issued the "Semiconductor Lighting Energy-Saving Industry Development Opinions"; the Ministry of Science and Technology also officially launched the "Ten Cities and Ten Thousand Miles" semiconductor lighting project; Guangdong Province The demonstration project of thousands of miles of LED street lights is also advancing rapidly.

In the face of such a good development situation, the introduction and implementation of the "Guangdong Province LED Street Lamp Local Standards" can be said to have occupied the best of time, location and people, and has achieved the norms of industry development, market competition and product quality. Further promote the application of LED lighting fixtures in these projects, and at the same time, through the role of regulating and guiding the LED industry market in Guangdong, the influence will be gradually expanded to other regions and even the whole country, thus generating positive effects on the larger industrial market. Promote.

To this end, the author interviewed Professor Qian Keyuan from the Semiconductor Lighting Laboratory of Shenzhen Graduate School of Tsinghua University, Chen Yansheng, Chairman of China Lighting Association, Yu Anqi, Deputy Director of National Electric Light Source Quality Supervision and Inspection Center (Shanghai), and Zhao Jian, Vice Chairman of China Lighting Society. Ping and Guangdong Research Institute of Standardization Research Institute Huang Jianping, Xu Chen and other experts and scholars, they have interpreted the "Guangdong Province LED Street Light Local Standards" from different angles.

With the increasing emphasis on the development of LED industry and the promotion of LED products, the lack of regional and national LED product standards is becoming an important factor restricting the rapid and standardized development of this industry. As one of China's most important LED industry bases and one of the key application areas, Guangdong Province, in conjunction with its exploration and practice in LED applications, has officially implemented the “Guangdong Province LED Street Light Local Standards” on July 1st, becoming the first in China. The provinces that have formulated and implemented the local standards for LED street lamps have enabled Guangdong to follow the guidelines for guiding the development of the LED industry and improving the technical content, product quality and comprehensive competitiveness of LED street lamps. It also marks a milestone for promoting the healthy and rapid development of the entire LED lighting industry. The meaning of the style.

Interpretation 1: Standard macro guidance and micro guidance are equally important

The standard-setting work was officially launched in June last year. It was confirmed by the Guangdong Provincial Bureau of Quality and Technical Supervision and other departments. The main drafting units are Dongguan Qinshang Optoelectronics Co., Ltd., Tsinghua University and Dongguan Quality Measurement Supervision and Inspection Institute, and are led by leading enterprises. Experts from universities, quality supervision institutions, and industry associations have set up standard drafting groups to conduct repeated research and discussion on technical requirements, important performance, and testing indicators in the field of LED street lamp packaging and application. Relevant data requirements for light efficiency, light decay, life, temperature, etc., also refer to the relevant documents issued by the National Semiconductor Lighting Engineering R&D and Industry Alliance, the practical application requirements of LED street lamps in Guangdong Province, and the test and practical results of the industry leading enterprises. To make the macro guidance and micro guidance role fully prominent and perfect.

Interpretation 2: What is the LED street light?

The implementation of "Guangdong Province LED Street Light Local Standards" makes it impossible for LED street lights and LED street lamps to meet the performance requirements. According to Huang Jianping, research center of Guangdong Standardization Research Institute, the standard is applicable to LED street lamps for roads, streets, tunnel lighting and other outdoor public places for lighting applications with DC power below 250V or AC power below 1000V. Defined by a composite lighting fixture consisting of a lamp housing, LED module, LED module control device, optical component, mechanical component, etc. that meets the standard requirements, LED module related to LED street lamp, LED heat sink, initial value, average correlated color temperature The average color rendering index and the rated maximum temperature were explained and clarified. At the same time, the full text has a total of twelve chapters, but also determined the classification, model and naming of LED street lights, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements. "No matter the content structure or the level of hierarchy, this standard has reached a certain height, and its guiding and normative functions will be further revealed in the short term."

Interpretation 3: General and special technical requirements are strict quality

The impression that street lamps give to ordinary people is nothing more than illuminating the road and the surrounding environment at night. As a new type of technology-based products, LED street lamps need to have technical requirements. One of the main drafters of "Guangdong Province LED Street Lamp Local Standards" Professor Qian Keyuan from the Semiconductor Lighting Laboratory of Shenzhen Graduate School of Tsinghua University said that on the basis of strengthening the general technical requirements, the standard also has special technical requirements for LED street lamps. It is understood that the general technical requirements of LED street lamps include street lamp surface, painted surface, welding site, safety of use and electromagnetic compatibility, etc. The special technical requirements are more extensive and comprehensive. If the rated average life of LED street lamps is required to be no less than 30,000 hours, the rated maximum temperature tc should not exceed 58 °C, the maximum heat sink temperature of each LED tube in the lamp should not exceed 65 °C, the difference between actual power consumption and rated power consumption. It should not be greater than 10%, the LED light bulb in the lamp should be extinguished or the light spot shape and road surface illumination uniformity should not change significantly when the light is adjusted.

Qian Keyuan pointed out that it is very worth noting that this standard also clarifies the main parameters of LED street lamps. It divides the initial luminous efficacy of LED street lights into four levels, determining the average correlated color temperature and the applicable road range. At the same time, the average color rendering index is required to be no less than 65, the 2000-hour luminous flux maintenance rate is not less than 98%, the 5000-hour luminous flux maintenance rate is not less than 97%, and the spot shape is determined to be a rectangular, circular, and elliptical spot. In combination with general and special technical requirements, the implementation of these standard rules has become the key to strictly guarantee the excellent quality of LED street lamps.

Interpretation 4: Standardized product test methods are concerned

In the author's interview, the person in charge of the technical department of Qinguang Optoelectronics, one of the main drafting units of the standard, also said that the complete standard product test method is included in the "Guangdong Province LED Street Light Local Standard", which is also a standard An important reason for concern. For example, in the light decay and life test, the standard puts forward specific requirements for the aging method of LED lamps: the experiment is required to be carried out in an environment without forced ventilation and temperature control at 20 ° C - 30 ° C. The lamps are erected according to the normal installation posture, and are nominally The rated voltage is connected to the power supply and operates at full power. In the aging test of lamps, the number of samples is not less than 3, and not less than 2 times every 24 hours. The closing time should be 25-35 minutes, and each interval should be at least 30 minutes. In the process of the luminaire, if any malfunction or burnout occurs, it is unqualified. At the same time, the standard also determines the light decay and life measurement estimation methods, maximum temperature, maximum heat sink temperature, average color temperature and average color rendering index, luminaire efficacy and lighting curve of the lamp, etc., making it suitable for LED lighting companies in the Pearl River Delta The impact of optimizing product quality and enhancing comprehensive competitiveness has become more and more obvious, and it has been fully affirmed and praised by many industry companies.

According to reports, as the only local standard for LED street lamps in China, "Guangdong Province LED Street Lamp Local Standards" also lists special chapters, which are unified and clear for the factory inspection, type inspection, marking, packaging, transportation and storage of LED street lamps. The current situation of improving the quality of LED street lamps in the current market, the variety of styles, and the lack of standardization of competition have played an increasingly important role.

Regarding the introduction and implementation of the "Guangdong Province LED Street Lamp Local Standards", how is the evaluation of the industry experts? "There was no industry standard before, what is produced, how to produce, and what technical requirements the product meets, there is no clear regulation, and the enterprise is conscious. The introduction of the industry has raised the threshold of the industry, and it is necessary to eliminate a number of enterprises that do not meet the standards and promote the development of a number of advantageous enterprises. This is of great significance for promoting the healthy development of the industry." Chen Yansheng, chairman of the China Lighting Association, said that this standard is for domestic In the field of LED lighting, it is not a small revolution, which will enable the LED industry to enter the standardized debugging period in advance, and guide the industry to change from disordered and non-standard state to orderly and standard state. Zhao Jianping, vice chairman of the China Lighting Society, said that the LED lighting industry is becoming a key industry at present, and the market competition is becoming more and more fierce. The implementation of this standard will help to consolidate the LED lighting industry base in the Pearl River Delta and improve the reliability of LED light sources. Improve the quality of the industrial level and promote the healthy development of the market. Yu Anqi, deputy director of the National Electric Light Source Quality Supervision and Inspection Center (Shanghai), believes that with the deep implementation of the standard, its influence will be comprehensive, not only for the regulation and guidance of the LED lighting industry in the Pearl River Delta, but also Positive demonstrations and influences have been formed in other parts of the country.

■Expert analysis

"Guangdong Province LED Street Light Local Standards" guides the demonstration role far-reaching

Deputy Secretary-General of National Semiconductor Lighting Engineering R&D and Industry Alliance

Guangdong is one of the most important LED industry bases in China. In recent years, it has been in the forefront of the country in response to the national call for and promotion of the popularization of LED lighting. Guangdong took the lead in formulating local standards for implementing LED street lights. I think there are four important roles.

First of all, it is conducive to promoting the research and development of semiconductor lighting standards in China. From the special lighting field, semiconductor lighting has entered the functional lighting field such as roads and tunnels, and there have been problems such as many types of products, many specifications, and uneven quality. Standards development work cannot meet the requirements of rapid industrial development. This is a common problem facing the world. The introduction of local standards for LED street lamps in Guangdong will further promote the establishment of China's semiconductor lighting standard system and play an important role in local application demonstration work.

Secondly, it is conducive to standardizing the LED lighting market in Guangdong and guiding the development of the LED lighting industry. Guangdong has already formed a certain scale of LED industry clusters. Although it is in a leading position in China, due to the insufficiency of the overall development of the industry and the lack of uniform industry standards, it will inevitably affect the overall market order and development prospects. The implementation of "Guangdong Province LED Street Lamp Local Standards", through the definition, classification, model and naming of LED street lamps, technical requirements, test methods, inspection rules and requirements for marking, packaging, transportation and storage, so that the production of LED lighting enterprises and The market behavior has a "behavior code", which is conducive to the sustainable and healthy development of the LED lighting market in Guangdong.

Once again, it is conducive to the promotion and popularization of Guangdong LED lighting products and the cultivation of leading enterprises. At present, with the encouragement and support of national policies, Guangdong is increasing the promotion and popularization of this new technology product by carrying out LED lighting application projects such as “Ten Cities and Ten Thousand Miles” and “Thousand Miles of 100,000”. After the implementation of the standard, clear performance and other index requirements are proposed for the selection of these application engineering lamps. With the continuous promotion of the standard LED street lamps, the quality and level of these application projects will be effectively guaranteed. At the same time, in this process, some vulnerable enterprises that fail to meet the standards, have limited operational strength, insufficient technical accumulation, and weak market vitality will be filtered to objectively play a role in cultivating leading enterprises and also benefit excellent LED lighting brands. Further bigger and stronger.

Finally, it is conducive to play a demonstration role and actively promote the development and standardization of the LED lighting industry in other parts of the country. As the earliest province in China to introduce LED street lamp industry standards, Guangdong LED lighting industry is booming through the standardization and guiding role of this standard. This standard reflects the advantages of Guangdong policy and shows that Guangdong promotes LED street lighting technology and The experience is relatively mature, and in the situation where the application of popularized LEDs has become an inevitable trend, this has the demonstration significance of “first-in-first-trial” in other parts of the country. It will also form beneficial enlightenment for other regions, and drive it to formulate industry standards in line with local characteristics, and ultimately promote the overall development and leapfrogging of China's LED lighting industry.

Formulate advanced standards to promote the development of LED industry

Guangdong Research Institute of Standardization Research Institute Huang Jianping Xu Chen

The introduction of the "Guangdong Province LED Street Light Local Standards" is of positive significance for regulating the LED lighting products market in Guangdong and promoting the advancement of LED lighting technology and the healthy development of the industry. But this is only the beginning. How to continue to promote the effective implementation and improvement of standards is still a very difficult task, and it needs to take multi-faceted measures to ensure the implementation of standards.

First, it requires the support of government departments at all levels. In the process of implementing the standards, the government's support, guidance and organization and coordination are very important, especially in the aspects of technology research and development and technological transformation required to implement the standards. The government needs support for LED packaging, applications, chip research and development, etc. Increased investment in LED lighting standardization research areas such as heat dissipation, optics, and driving, thereby increasing the enthusiasm for implementing standards.

Second, we need the active cooperation of LED lighting related companies. On the one hand, enterprises should be able to consciously implement the relevant standards at all levels in the production process. On the other hand, they must increase their own investment in quality management, management level, testing methods and methods, so that their product quality and standards can be Existing standard packages.

Again, it is necessary to establish a complete, fair and scientific testing and evaluation system as soon as possible. As the LED lighting product testing standards and systems are far from being able to adapt to the development requirements of the LED industry, it is imperative to establish and improve a complete, fair and scientific LED lighting equipment testing and evaluation system. At present, it is necessary to establish a corresponding third-party LED lighting inspection mechanism under the guidance of the government, adopt and develop test equipment that meets LED characteristics, and establish a test system so that the standard can objectively reflect the technical level of LED lighting in China, and the rapid development of LED lighting in China. Development is compatible and consistent with international standards.

We also need to recognize that any standard has a process of continuous improvement and improvement in implementation. With the passage of time and the speed of development, the current local standards for LED street lamps developed in Guangdong before the national standard need further improvement and improvement. Through the joint efforts of all of you, we will eventually promote the continuous upgrading of the standard level and promote the overall development level of the LED industry in Guangdong.

"Guangdong Province LED Street Light Local Standards" (Abstract)

1-7 (slightly)

8, special technical requirements

8.1 Electrical performance of lamps

When the LED street lamp is operated under the nominal rated supply voltage and rated frequency, the difference between the actual consumed power and the rated power shall not exceed 10%, and the power factor shall not be less than 0.92.

8.2 Protection level

LED street light protection grade A grade should not be lower than IP67; grade B grade should not be lower than IP66; grade C should not be IP65.

8.3 average life expectancy

The rated average life of LED street lamps should not be lower than 30,000h.

8.4 maximum temperature

The rated maximum temperature tc of the LED street light should not exceed 58 °C.

8.5 maximum heat sink temperature

The maximum heat sink temperature of each LED tube in the luminaire should not exceed 65 °C.

8.6 main light parameters

Table 1 main parameters of LED street lights (see chart below)

8.7 Immunity

The voltage protection level of surge suppression performance (anti-lightning) should be no less than 2kV (line-line) and 4kV (line-to-ground).

8.8 Light distribution characteristics

When some of the LED bulbs in the luminaire are extinguished or the whole lamp is dimmed, the spot shape and the uniformity of the illuminance of the road surface should not change significantly.

9. Test method

9.1 Appearance requirements

Visual inspection

9.2 Security

According to GB7000.1, GB7000.5, GB19510.1 and the corresponding national standards or foreign standards for inspection.

9.3 Electromagnetic compatibility

According to the relevant provisions of GB17743 and GB17625.1.

9.4 Electrical performance of the luminaire

At an ambient temperature of 25 °C ± 2 °C, an AC/DC parameter tester with an accuracy of not less than 0.5 is connected between the regulated power supply (the same nominal frequency as the lamp) and the LED street light, so that the LED street light is in the normal working position. By adjusting the power supply voltage to the rated value (such as the nominal supply voltage range of the lamp, it is adjusted to the maximum and minimum values of the power supply voltage range respectively) to make the LED lamp work for 2h, recording the power and power factor values.

9.5 protection level

According to the provisions of GB7000.1.

9.6 Light decay and life test

9.6.1 Lamp aging method

The aging of the lamp is carried out in an environment without forced ventilation and temperature control in the range of 20 ° C to 30 ° C. The lamp is erected in the normal installation posture, and the power is turned on according to the nominal voltage of the lamp or the maximum voltage of the nominal applicable voltage range. Power work. During the aging process, the luminaire shall be closed no less than 2 times per 24H. The closing time shall be 25min~35min, and the interval shall be at least 30min. The number of samples is not less than three. During the test, the lamp shall not be damaged or burnt, otherwise it will not be qualified.

9.6.2 Calculation method of light decay and life measurement

The illuminance method is used instead of the luminous flux method. The horizontal illuminance value of one point per 1 meter at the center point and the axis along the road direction is measured at a distance of 2 meters from the height of the lamp. A total of 5 points are measured, and compared with the initial values of the points. The average maintenance rate value of 5 points. Between 2000H and 5000H, the average maintenance rate is measured every 336H interval; if the luminaire still meets the requirements at 5000H, the illuminance value of each point at 2000H is the initial illuminance value, and the measured illuminance value per 336H interval is At 2000H, the corresponding initial illuminance values are compared and the average maintenance rate is obtained. The life expectancy when the average maintenance rate is 75% is calculated from the average maintenance rate fitting curve of the above 10 points, and 5000H is the life of the lamp. One of the street lamps was selected, and the luminous flux at 0H and 2000H was measured by the photometric distribution test method, and the 2000H lumen maintenance rate was calculated as the calibration value. When measuring illuminance, the ambient temperature should be controlled to be stable at 3 °C above 25 °C ± 1 °C.

9.7 maximum temperature

According to the provisions of Chapter 12 of GB7000.1-2007.

9.8 maximum heat sink temperature

Select the highest temperature of the heat sink in the LED and place the thermocouple on the heat sink closest to the bottom of the LED.

9.9 main light parameters of the luminaire

9.9.1 Average color temperature and average color rendering index

At 25 °C ± 1 °C ambient temperature and rated voltage, rated frequency, measured by the integrated spectrum test system, the lamp sample is placed in the integrating sphere, to avoid direct light into the test probe, the outer surface of the lamp should be pasted does not significantly affect the color temperature test White cover film. Test after 1 hour of ignition.

9.9.2 Luminaire light efficiency and lighting distribution curve

Measured with a photometric distribution test system at an ambient temperature of 25 °C ± 1 °C. Firstly, the luminous flux and intensity distribution of the luminaire, the light distribution curve, etc. are tested. The luminous efficacy of the luminaire is the ratio of the luminous flux of the LED street lamp to the actual power consumption of the luminaire.

9.10 Immunity

According to the method specified in GB17626.5.

10. Inspection rules

10.1 Inspection classification

Product inspection is divided into factory inspection and type inspection.

10.2 Factory inspection

10.2.1 Each luminaire shall be qualified by the inspection department and issued a certificate of conformity before leaving the factory.

10.2.2 The factory inspection items are shown in Table 2. For the unqualified inspection items, the sampling shall be doubled for inspection. After the re-inspection is passed, the delivery can only be repackaged. If the re-inspection is unqualified, the batch of products shall be unqualified; if other items are unqualified, they shall be repaired and may be delivered after passing the inspection.

10.3 type inspection

10.3.1 Type inspection shall be carried out in one of the following cases:

a) Trial-type identification of new products or old products to factory production;

b) After formal production, if there are major changes in structure, materials and processes, which may affect product performance;

c) When the product is suspended for more than half a year, when the production is resumed;

d) When the factory inspection result is significantly different from the previous type inspection;

e) When the national quality supervision agency requests the type inspection.

10.3.2 Type inspection samples shall be taken from the factory-qualified varieties, and 4 pieces shall be taken at a time. If the photoelectric performance of the lamps has unqualified items, it shall be judged as unqualified. If there are unqualified items in other projects, the samples should be doubled in the same batch of products, and the unqualified items should be re-examined. If the products are still unqualified, the type inspection is unqualified.

Table 2 inspection items

11-12 (omitted)

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