The lack of standards has always been a bottleneck restricting the development of the LED industry. To this end, at the end of 2009, the National Standardization Administration issued a number of LED-related standards. The introduction of a series of new standards will help promote more standardized and healthy development of China's LED lighting industry.
After more than one year of transition, a number of LED standards will be implemented in November and December this year. Recently, Yu Anqi, deputy director of the National Electric Light Source Quality Supervision and Inspection Center (Shanghai), said that despite the implementation of the standards, there are still many people in the industry who do not fully understand the meaning of the standard. In the first LED general lighting product and technology seminar, Yu Anqi explained in detail the main terms, characteristics and application scope of some important new national standards.
GB24819-2009 Safety requirements for LED modules for general lighting This standard was promulgated on November 30, 2009 and implemented on November 1, 2010. Yu Anqi said that the standard is equivalent to using IEC62031 2008. According to the installation method, the modules are divided into integral type, built-in type, and stand-alone type. This is the same as the control principle of GB19510 series lamps. The main clauses of the standard basically quote the standards of GB19510.1 and GB7000.1. Its greatest feature is the adoption of the photobiological safety standard of IEC62471 2006 lamp and lamp system. This is because considering that LED lighting products can enter the room and may be seen directly at a short distance, the requirement for eye protection has been proposed, and the standard of the IEC60825 laser device has been used before, and this does not apply.
GB/T24823-2009 LED modules for general lighting performance requirements The standard has several characteristics: First, the power factor requirements meet the declared value, the measured value shall not be less than the declared value of 0.05; Second, the harmonics shall meet the requirements of GB17625.1. It is worth noting that the above two items are only applicable to self-ballasted LED modules that are directly connected to the power supply. The rest are borne by the driver. In addition, the standard stipulates that the radio disturbance (EMI) characteristics should meet the requirements of GB17743, but only LED modules that are directly connected to the power supply need to be tested for “power terminal disturbanceâ€. Others are also carried by the driver. Only when the current frequency of the driving LED is greater than 100 Hz, "radiation disturbance (including 9 KHz to 30 MHz and 30 MHz to 300 MHz)" is performed. At the same time, electromagnetic compatibility immunity (EMS) should meet the requirements of GB/T18595, but only LED modules directly connected to the power supply need to perform "anti-pulse group" detection, and other LED modules are still borne by the driver. The standard also requires that an "anti-electrostatic discharge" test should generally be performed, but only for the use of LED modules used in radio frequency interference or power frequency interference occasions. This standard optical performance parameters according to GB/T24824.
GB/T24824-2009 Standard Test Method for LED Modules for General Lighting The main reference is made to the CIE127 2007 standard. The focus of its detection method is to monitor the temperature requirements of the specified temperature measurement point of the LED module under test. Yu Anqi said that this is because other light sources ensure the stability of the power supply under the premise of ensuring the stability of the ambient temperature of the light source, and the repeatability of good test results can be obtained. However, the LED only guarantees that the ambient temperature is stable and the repeatability of good test results cannot be obtained. Therefore, the temperature of the temperature measurement point is required.
For light, color, and electrical performance parameter detection methods, the standard states that the LED module should be operated under thermal equilibrium during test or measurement. While monitoring the ambient temperature, it is better to monitor the operating temperature of the LED module itself to ensure that the test can be performed. Replicability. If it is possible to monitor the LED module junction voltage, monitor the junction voltage first. Otherwise, the temperature of the specified temperature measurement point of the LED module should be monitored. This shows that monitoring the junction voltage is preferred.
When working with an external heat sink (including active cooling), the temperature of the LED module itself should be monitored and controlled because the heat sink of the LED and the heat sink's contact surface are unlikely to maintain a good thermal resistance, so monitor and control the LED module. Its own temperature, to ensure the detection of reproducibility. The monitoring and control of the LED module's own junction temperature is used for the detection. That is, monitoring the conditions of the junction voltage and measuring the light, color, and electrical parameters are the preferred solutions for ensuring the reproducibility of the detection.
GB24906-2010/IEC62560 Self-ballasted LED lamps with above 50V for general lighting The safety requirements This standard is equivalent to the IEC standard. The evaluation criteria and methods of the standard and the GB16844/IEC60968 self-ballasted fluorescent lamp standard are almost the same, because the use of the two methods and the possible safety issues are almost the same.
Yu Anqi said that compared with self-ballasted fluorescent lamps, the current standard is more difficult to achieve. It is a HV type (220V to 250V) lamp that passes the 4000V dielectric strength test. Because this type of lamp has a good heat dissipation, its heat sink is basically exposed on the outside (accessible parts). The LED and the heat sink must not only ensure a small thermal resistance, but also ensure the thickness of the insulation layer and the electrical clearance. All the current, the sample lights of multinational companies have not yet done this. The effective solution is to isolate the circuit or use a high thermal conductivity ceramic material. GB/T24908-2010 Self-ballasted LED lamps for general lighting performance requirements This standard has more in common with GB/T17263/IEC60969. However, after the standard was developed, the IEC published the CPS file of IEC62612 2009. In contrast to this standard in China, in addition to the lumen maintenance test, the no-load alternating high-low temperature test, switch impact test, and high temperature acceleration test were also conducted. . It should be said that IEC62612 has more complete assessment requirements. Yu Anqi reminded us that in order to export this kind of products, we should study this standard as soon as possible, while also amending the standards that have already been promulgated, and developing products in accordance with IEC62612 to ensure that our products of this type continue to maintain a good export capacity.
After more than one year of transition, a number of LED standards will be implemented in November and December this year. Recently, Yu Anqi, deputy director of the National Electric Light Source Quality Supervision and Inspection Center (Shanghai), said that despite the implementation of the standards, there are still many people in the industry who do not fully understand the meaning of the standard. In the first LED general lighting product and technology seminar, Yu Anqi explained in detail the main terms, characteristics and application scope of some important new national standards.
GB24819-2009 Safety requirements for LED modules for general lighting This standard was promulgated on November 30, 2009 and implemented on November 1, 2010. Yu Anqi said that the standard is equivalent to using IEC62031 2008. According to the installation method, the modules are divided into integral type, built-in type, and stand-alone type. This is the same as the control principle of GB19510 series lamps. The main clauses of the standard basically quote the standards of GB19510.1 and GB7000.1. Its greatest feature is the adoption of the photobiological safety standard of IEC62471 2006 lamp and lamp system. This is because considering that LED lighting products can enter the room and may be seen directly at a short distance, the requirement for eye protection has been proposed, and the standard of the IEC60825 laser device has been used before, and this does not apply.
GB/T24823-2009 LED modules for general lighting performance requirements The standard has several characteristics: First, the power factor requirements meet the declared value, the measured value shall not be less than the declared value of 0.05; Second, the harmonics shall meet the requirements of GB17625.1. It is worth noting that the above two items are only applicable to self-ballasted LED modules that are directly connected to the power supply. The rest are borne by the driver. In addition, the standard stipulates that the radio disturbance (EMI) characteristics should meet the requirements of GB17743, but only LED modules that are directly connected to the power supply need to be tested for “power terminal disturbanceâ€. Others are also carried by the driver. Only when the current frequency of the driving LED is greater than 100 Hz, "radiation disturbance (including 9 KHz to 30 MHz and 30 MHz to 300 MHz)" is performed. At the same time, electromagnetic compatibility immunity (EMS) should meet the requirements of GB/T18595, but only LED modules directly connected to the power supply need to perform "anti-pulse group" detection, and other LED modules are still borne by the driver. The standard also requires that an "anti-electrostatic discharge" test should generally be performed, but only for the use of LED modules used in radio frequency interference or power frequency interference occasions. This standard optical performance parameters according to GB/T24824.
GB/T24824-2009 Standard Test Method for LED Modules for General Lighting The main reference is made to the CIE127 2007 standard. The focus of its detection method is to monitor the temperature requirements of the specified temperature measurement point of the LED module under test. Yu Anqi said that this is because other light sources ensure the stability of the power supply under the premise of ensuring the stability of the ambient temperature of the light source, and the repeatability of good test results can be obtained. However, the LED only guarantees that the ambient temperature is stable and the repeatability of good test results cannot be obtained. Therefore, the temperature of the temperature measurement point is required.
For light, color, and electrical performance parameter detection methods, the standard states that the LED module should be operated under thermal equilibrium during test or measurement. While monitoring the ambient temperature, it is better to monitor the operating temperature of the LED module itself to ensure that the test can be performed. Replicability. If it is possible to monitor the LED module junction voltage, monitor the junction voltage first. Otherwise, the temperature of the specified temperature measurement point of the LED module should be monitored. This shows that monitoring the junction voltage is preferred.
When working with an external heat sink (including active cooling), the temperature of the LED module itself should be monitored and controlled because the heat sink of the LED and the heat sink's contact surface are unlikely to maintain a good thermal resistance, so monitor and control the LED module. Its own temperature, to ensure the detection of reproducibility. The monitoring and control of the LED module's own junction temperature is used for the detection. That is, monitoring the conditions of the junction voltage and measuring the light, color, and electrical parameters are the preferred solutions for ensuring the reproducibility of the detection.
GB24906-2010/IEC62560 Self-ballasted LED lamps with above 50V for general lighting The safety requirements This standard is equivalent to the IEC standard. The evaluation criteria and methods of the standard and the GB16844/IEC60968 self-ballasted fluorescent lamp standard are almost the same, because the use of the two methods and the possible safety issues are almost the same.
Yu Anqi said that compared with self-ballasted fluorescent lamps, the current standard is more difficult to achieve. It is a HV type (220V to 250V) lamp that passes the 4000V dielectric strength test. Because this type of lamp has a good heat dissipation, its heat sink is basically exposed on the outside (accessible parts). The LED and the heat sink must not only ensure a small thermal resistance, but also ensure the thickness of the insulation layer and the electrical clearance. All the current, the sample lights of multinational companies have not yet done this. The effective solution is to isolate the circuit or use a high thermal conductivity ceramic material. GB/T24908-2010 Self-ballasted LED lamps for general lighting performance requirements This standard has more in common with GB/T17263/IEC60969. However, after the standard was developed, the IEC published the CPS file of IEC62612 2009. In contrast to this standard in China, in addition to the lumen maintenance test, the no-load alternating high-low temperature test, switch impact test, and high temperature acceleration test were also conducted. . It should be said that IEC62612 has more complete assessment requirements. Yu Anqi reminded us that in order to export this kind of products, we should study this standard as soon as possible, while also amending the standards that have already been promulgated, and developing products in accordance with IEC62612 to ensure that our products of this type continue to maintain a good export capacity.
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