Summary:
Nowadays, there are more and more LED street lights in the city, and the traditional street lamps of high pressure sodium lights are gradually replac
Nowadays, there are more and more LED street lights in the city, and the traditional street lamps of high pressure sodium lights are gradually replaced. However, the current quality level of LED street lights is not very good at the market, so it is important to choose a good quality LED street light. The LED street light power is an important part of the LED street light. When we choose the LED street light, its power must meet these four requirements:
First, the LED street light power must be the characteristics of the illumination material of the constant current LED street light determine its impact on the environment. For example, if the temperature changes, the current of the LED will increase. In addition, the voltage of the LED will increase. If long-term run exceeding the rated current, the life of LED lamp beads will be greatly shortened. The constant current of the LED street light power is also a current value of its operating when it changes environmental factors such as temperature and voltage.
Second, the LED stream power supply constant current accuracy market has a constant current accuracy of some power supplies, and the error may reach ± 8%, while the constant current error is too large. General requirements are ± 3%. According to a 3% design. The production power supply should be subjected to fine-tuning to achieve an error of ± 3%.
Third, the recommended working voltage of the LED street light power work voltage is 3.0-3.5V. After testing, most of the work is 3.2V, so it is reasonable according to 3.2V. The total voltage of n lamp beads is tandem = 3.2 * N.
Fourth, the appropriate working current of the LED street light power supply
For example, the rated operating current of the LED street light is 350 mAh. Some LED street lamp manufacturers use it at the beginning, design 350 mA. In fact, the working heat under this current is very serious. After multiple comparison tests, it is more suitable to be 320mA, which can reduce calories and convert more electric energy to visible light.
The LED street light power is satisfied with these four-point requirements to calculate a qualified power supply. In addition, when choosing the LED street lamp, we must not only pay attention to the power supply, we have to fully understand the other components of the LED street light, so you can choose the quality LED street light.
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