P2.604 indoor LED display.LED Street Light Standard

　　1. Electrical performance of lamps

　　When LED street lights operate at the nominal rated power supply voltage and rated frequency, the difference between their actual power consumption and rated power should not exceed 10%, and the power factor should not be less than 0.92.

　　2 Protection level

　　The protection level A of LED street lights should not be lower than IP67; Grade B products should not be lower than IP66; C-grade products should not have IP65.

　　3 Average lifespan

　　The rated average lifespan of LED street lights should not be less than 30000 hours.

　　4 Maximum temperature

　　The rated maximum temperature Tc value of LED street lights should not exceed 58 ℃.

　　5 Maximum heat sink temperature

　　The maximum heat sink temperature of each LED tube inside the lamp should not exceed 65 ℃.

　　6 Main optical parameters

　　7 Immunity

　　The surge suppression performance (lightning resistance) should not be less than 2kV (line to line) and 4kV (line to ground).

　　8 Light distribution characteristics

　　When some LED bulbs in the lamp are extinguished or the entire lamp is dimmed, the shape of the light spot and the uniformity of road illumination should not change significantly.

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