LED street lamp driver under the environment of low temperature operation reliability dynamic | | industry lighting: solar LED street lamp manufacturers in the countryside

by:ALLTOP      2020-11-14
At present most of the LED street lamp driver power supply in the cold under low temperature environment to show the different types of water phenomenon, more prominent characterization is to start in low temperature and low temperature for a long time running environment of high failure rate. Will be the main reason is the drive power supply at the design stage of device selection without considering the reliability of the low temperature working condition, the characteristics of some key components under low temperature environment change, caused by low temperature start or normal operation of the drive, the specific reason for the failure is basically has the following four aspects: first, the LED street lamp switch tube under the condition of low temperature will reduce the carrier density and activity, the starting point of overload protection could reduce; Second, electrolytic capacitor electrolyte at low temperature freezing, loss of capacitance effect, without loading capacity; Third, some types of light lotus root device cannot work normally under the low temperature condition; Fourth, the input to prevent the surge current thermistor, under the low temperature resistance larger ( 3 ~ 5 times that of normal temperature) Can also cause outdoor LED lights to start in low temperature. Way to resolve the problem from a choice of LED street light temperature characteristic better device. The adjustment of the device may slightly raise the cost of driving gear, but from the perspective of the overall cost of the LED street lamp is negligible, to consider the factors to improve the reliability and reduce maintenance costs, this design adjustment is necessary and cost-effective. Want to learn more industry information or ask price, can make free calls
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