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First, packaging and trademarks The state mandates that […]
First, packaging and trademarks
The state mandates that LED lamp manufacturers produce the following contents on the outer packaging: rated voltage, voltage range, rated power, and rated frequency. Generally speaking, the quality of the trademark printing of high-quality products is good, the font is clear, it is not easy to fall off, and it is wiped with a soft damp cloth. The mark is clear and identifiable, it is not easy to wipe off, and there are trademarks of manufacturers and related certification marks. Counterfeit products have poor printing quality, fuzzy fonts, easy to erase, no manufacturer's trademark and related certification marks.
Second, LED tube appearance
The real LED energy-saving lamp is a three-color tube, which is white, covered by hand, and whiter. At the same time, multiple tubes can be put together. The shape and size of the tube are better. The quality of the products produced is guaranteed. At the same time, the outer casing should not be cracked or loose, and there should be no traces of the seal at the seal. During the installation and disassembly process, the lamp cap should not be loose or smashed.
Third, the temperature at work
When the LED energy-saving lamp is in normal working condition, its temperature rise should be very low. Otherwise, the LED energy saving lamp has a very short life. At the same time, when the energy-saving lamp is lit, there is a rapid flashing, or it is very glaring, indicating that the energy-saving lamp has quality problems.
Fourth, the startup performance
LED energy-saving lamp startup has two characteristics: First, the higher the temperature, the easier it is to start; the second is that the lamp is turned off and will not flash. In addition, it is worth mentioning that many LED energy-saving lamps are very dark, which is not good for the life of the bulb. The LED energy-saving lamps should have a power circuit and a PCB board inside.
V. Interference situation
In China, electromagnetic compatibility is a project that must be passed by electrical appliances. However, the detection of this project is very complicated. When users buy lamps, they will see whether they have passed the national electromagnetic compatibility test mark on the packaging, and the second is to bring a medium and short wave radio. When the lamp is working, put the radio nearby, the lower the noise emitted by the short-wave radio station, the better the electromagnetic compatibility of the lamp under test.