LED lamp test method

1 appearance requirements

Visual inspection.

2 safe

According to GB7000.1, GB7000.5, GB19510.1 and the corresponding national standards or foreign standards for testing.

3 Electromagnetic compatibility

According to the relevant provisions of GB17743 and GB17625.1.

4 lamp electrical performance

In 25 ℃ ± 2 ℃ ambient temperature, the power supply (with the lamp nominal frequency of the same) and LED lights access precision of not less than 0.5 AC and DC parameters Tester, the LED lights in the normal working position , Turn on and adjust the power supply voltage to the rated value (such as the lamp nominal supply voltage range, were adjusted to the maximum and minimum power supply voltage range) LED lighting work 2h, record the power and power factor values.

5 degree of protection

According to the provisions of GB7000.1.

6 bad light and life test

6.1 lamp aging method

Aging lamps in the absence of forced ventilation, temperature control at 20 ℃ -30 ℃ environment, the lamp installed in accordance with normal posture, according to the lamp nominal voltage or nominal voltage range of the maximum voltage connected to the power supply, the lamp is full Power work. Lighting in the aging process, closed every 24h no less than 2 times, each time off should be 25-35min, the interval should be at least 30min. Sample size of not less than 3 units. Test, the lamp shall not appear any failure, burned, or unqualified.

6.2 light failure and life measurement calculation method

Illumination method to replace the luminous flux method, measured at a distance of 2 meters from the luminaire below the center point and along the road direction of the axis of each point of a meter at a distance of 1 meter, a total of 5 points measured with the initial value of each point The average retention rate of 5 points. In 2000-5000h, every 336h intervals measured once the average retention rate value; such as 5000h when the lamp is still in line with the requirements, the 2000h when the value of each point of illumination as the initial value of illumination, the measured value of each 336h interval illumination and 2000h when the corresponding initial illuminance value comparison and the average maintenance rate obtained from the 10 points average retention rate curve calculated average retention rate of 75% of the life time plus 5000h is the lamp life. Select one of the street lights, while using the light distribution test method to measure luminous flux 0-2000h, calculate the 2000h lumen maintenance as a calibration value. When measuring illuminance, the ambient temperature should be controlled at 25 ℃ ± 1 ℃ stable 3h above the case.