Maximum heat sink temperature Select the highest temper […]
Maximum heat sink temperature Select the highest temperature of the heat sink in the LED and place the thermocouple on the heat sink closest to the bottom of the LED.
2.9 Main light parameters of the luminaire
2.9.1 Average color temperature and average color rendering index are measured by integral spectrum test system at ambient temperature and rated voltage and rated frequency of 25 °C ± 1 °C. The sample of the lamp is placed in the integrating sphere to avoid direct light injection test. For the probe, the outer surface of the luminaire should be pasted with a white cover film that does not significantly affect the color temperature test. Test after 1 hour of ignition.
2.9.2 Luminaire efficacy and luminaire grading curve Measured with a photometric distribution test system at an ambient temperature of 25 °C ± 1 °C. Firstly, the luminous flux and intensity distribution of the luminaire, the light distribution curve, etc. are tested. The luminous efficacy of the luminaire is the ratio of the luminous flux of the LED street lamp to the actual power consumption of the luminaire.
2.10 Immunity According to the method specified in GB17626.5.