Applicability: This method is applicable to lighting and optical signal devices (except for enclosed lamps) to determine their water resistance.
Equipment: waterproof test box, box type rain test box, swing tube rain test device
1. The semicircular annular water spray pipe is opened within ±90° on both sides of the vertical axis, and has a water spray hole with a diameter of 0.8 mm and a spacing of 50 mm;
2. The radius R of the spray pipe depends on the sample size, and the R values ​​are 200mm, 400mm, 600mm, 800mm and 1000mm respectively, from which the applicable small R spray pipe is selected;
3. The sprinkler pipe is swept on both sides of the vertical axis at a speed of 60°/s, and the angle range is 180°±20°;
4. The water flow rate of each spray hole is 0.6L/min+5%, and the water pressure is approximately 400kPa.
Sample: Two illumination or light signal devices.
Test conditions:
1. The sample is protected according to the loading condition and installed on the test bracket to open all the drainage holes and openings. The test bench speed for installing the sample is 1r/min~3r/min;
2. The distance between the sample and the water spray pipe should be no more than 200mm;
3, temperature 23 ° C ± 5 ° C, relative humidity 25% ~ 75%, pressure 86kPa ~ 106kPa;
4. The difference between water temperature and ambient temperature does not exceed ±5 °C.
experiment method:
1. The sample shall be centered on the test bench;
2. The light distribution performance of the sample should be checked before and after the test.
3. The test consists of two cycles, each cycle lasting 5 minutes, of which the sample is illuminated for 3 minutes and closed for 2 minutes. The test duration is 10 min.
Judgment of results: After the test, the light distribution performance of the sample should meet the requirements of relevant standards.
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Description:
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1.Be careful to knock , don't touch the hook, so as not to break the hook.
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