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What are the common pitfalls of LED street light procurement

time:2022-03-01 Views:17


LED street lights have been developing slowly due to their low power consumption, high luminous efficiency, long life, energy saving and environmental protection. Slowly eliminate traditional street lamps and become the "main force" of road lighting. The lighting time of the street lamp is long, and it is installed outdoors, causing the sun and rain, so it must pass the quality requirements of the lamp. Otherwise, damage to the lamps will pose a threat to road safety. Therefore, whether it is an enterprise or an engineering company, it is necessary to be cautious when purchasing street lamps to avoid falling into the procurement trap.

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When buying street lights, you need to pay attention to the following traps:


Trap a counterfeit chip, low-end chip


The core of LED lamps is the chip, which directly determines the performance of the lamp! However, some unprofessional manufacturers take advantage of the unprofessionalism of their customers and use low-cost chips in consideration of cost, so that customers can buy inferior products at high unit prices, causing direct economic losses. Causes serious quality hidden danger to LED lights.


Trap 2 configures false standards and exaggerates configuration parameters


The popularity of solar street lights is also accompanied by a decline in prices and profits, and fierce competition has also led many solar street light manufacturers to cut corners, falsely standardizing product parameters, light source wattage, solar panel wattage, battery capacity, and even solar street light pole materials. is problematic. Of course, this is also caused by repeated price comparisons and requests for low prices by customers, and it is also related to the practices of some manufacturers.


Trap 3 Poor heat dissipation design and unreasonable configuration


In terms of heat dissipation design, for every 10 degrees increase in the PN junction temperature of the LED chip, the lifespan of the semiconductor device will decrease exponentially. Due to the high brightness requirements of LED solar street lights and the harsh operating environment, if the heat dissipation solution is not solved well, it will quickly lead to LED aging and reduce stability. In addition, unreasonable configuration often leads to specific usage that does not meet expected values.


Trap four copper wires posing as gold wires and controller problems


Many LED manufacturers try to develop copper alloys, gold-silver alloy wires, and silver alloy wires to replace expensive gold wires. While these alternatives are superior to gold wire in some properties, they are much less chemically stable, for example silver wire and gold-plated silver alloy wire are susceptible to sulfur/chlorine/bromide corrosion, and copper wire is susceptible to oxidation and vulcanization. For encapsulated silicones similar to absorbent and breathable sponges, these alternatives make the bonding wires more susceptible to chemical corrosion, the reliability of the light source is reduced, and the LED lamp beads are more likely to break and die after prolonged use. use.


For the solar street light controller, if the controller fails, there will be "all lights off", "switch lights off", "partial damage", "individual LED lamp bead dead lights", "whole lights" during the test and inspection process. The lights flicker on and off".


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