Since 2020, everyone has known that LED lights are more energy-efficient than traditional lights. LED lights are an industry general term. Yaorong Technology’s main business is subdivided into many products, such as LED street lights, LED tunnel lights, and LED high bay lights. , LED fluorescent lamps and LED panel lights and other products.
To Yaorong Technology’s insulation requirements are very strict Due to the limited internal space of LED energy-saving lamps, in the structural design, attention should be paid to the insulation requirements between hazardous live parts and accessible metal parts. Insulation can be spatial distance and creepage distance, or insulating sheet. According to standard requirements, the space distance between hazardous live parts and accessible metal parts must reach 3.2 mm, and the creepage distance must reach 6.4 mm. If the distance is not enough, an insulating sheet can be added as additional insulation. The thickness of the insulating sheet should be greater than 0.71 mm. If the thickness is less than 0.71 mm, the product must be able to withstand the high voltage test of 5000V.
We have repeated the drop test many times
According to the requirements of the product standard, the product should simulate the drop test that may occur during actual use. The product should be dropped from a height of 0.91 meters onto a hardwood board. The product shell should not be broken to expose the dangerous live parts inside. When the manufacturer chooses the material for the product shell, it must do this test in advance to avoid the loss caused by mass production not meeting the standard.
Regarding power modules, we comply with international standards
The power module is an important part of the LED energy-saving lamp, and the power module mainly adopts switching power supply technology. According to different types of power modules, different standards can be considered for testing and certification. If the power module is a class II power supply, this can be tested and certified by UL1310. Class II power supply refers to a power supply that uses an isolation transformer, the output voltage is less than 60 volts DC, and the current is less than 150/Vmax amperes. For non-class II power supplies, UL1012 is used for testing and certification. The technical requirements of these two standards are very similar and can be referred to each other. Most of the internal power modules of LED energy-saving lamps use non-isolated power supply, and the output DC voltage of the power supply is also greater than 60 volts. Therefore, UL1310 standard is not applicable, but UL1012 is applicable.
The technicians of Yaorong Technology do the temperature rise test seriously
Temperature rise test is a must-do item for product safety testing. The standard has certain temperature rise restrictions on different components. In the product design stage, manufacturers should pay great attention to the heat dissipation of the product, especially for certain parts (such as insulating sheets, etc.). If the parts work under high temperature conditions for a long time, their physical properties may be changed, which may cause fire or electric shock hazards. The power module inside the luminaire is in a closed and small space, and the heat dissipation is limited. Therefore, when selecting components, manufacturers should pay attention to selecting appropriate component specifications to ensure that the components work with a certain margin, so as to avoid overheating caused by long-term operation of the components near full load.
It is very important to choose materials for LED energy-saving lamps
Led energy-saving lamps can be made into ball-shaped straight tube and other shapes. Take straight-tube LED fluorescent lamp as an example. Its shape is the same as ordinary fluorescent tube. The power module and light-emitting diode are wrapped in a fluorescent tube transparent PC polymer shell. inside. The transparent polymer shell plays the role of fire prevention and electric shock prevention in the product. According to the standard requirements, the energy-saving lamp housing material must be above V-1 level, so the transparent polymer housing must be made of materials above V-1 level. For the product shell to reach the V-1 level, its thickness must be greater than or equal to the thickness required by the V-1 level of the raw material. The fire rating and thickness requirements can be found on the UL yellow card of the raw material. In order to ensure the brightness of LED energy-saving lamps, many manufacturers often make the transparent polymer shell very thin, which requires inspection engineers to pay attention to ensuring that the material meets the required thickness of the fire rating.
We attach great importance to the structural cost of LED lights
In order to save costs, some LED lamp manufacturers solder pin-type components on the PCB surface, which is not advisable. Pin-type components soldered on the surface may fall off due to false soldering and other reasons, causing danger. Therefore, socket welding should be adopted as much as possible for these components. If you have to use surface welding, you must use "L feet" for this component and fix it with glue to provide additional protection.
We have done a rigorous failure test
Product failure test is a very necessary test item in product certification test. This test item is to short-circuit or open some components on the line to simulate the failure that may occur during actual use, so as to evaluate the safety of the product under a single failure condition. In order to meet this safety requirement, when designing the product, consider adding a suitable fuse to the input of the product to prevent excessive current from occurring when extreme conditions such as output short-circuit and internal component failure occur, which may lead to fire.
Regarding the electric strength, we meet the standards
The transparent shell encloses the power module inside, and the transparent shell material must meet the requirements of electrical strength. According to the requirements of the standard, based on the North American voltage of 120 volts, the internal high-voltage live parts and the shell (covered with metal foil for testing) must be able to withstand the AC 1240 volts electrical strength test. Under normal circumstances, the thickness of the product shell reaches about 0.8 mm, which can meet the requirements of the electric strength test.
At present, the main market of LED energy-saving lamps is gradually shifting from overseas to globalization, and the export overseas markets must pass the inspection. The domestic LED energy-saving lamps are becoming more and more stringent. Therefore, certification and testing have become the work of all LED lamp manufacturers. Focus. The above are the key points of the 8 LED energy-saving lamp testing standards shared by Yaorong Lighting. I hope that it will be helpful to people in the LED energy-saving lamp industry and outside the industry.
