1. The test sample is fastened to the rain test chamber in accordance with the requirements of 2.1 of the “410 Rain Test†in GJB367.2 according to the normal working condition. The distance between the test sample and the spray head is 1 m. Test specimens with seals shall be heated as required by 5.12.1.3 of the SJ 20128-1992 standard.
2. Adjust the rainfall intensity as follows.
a, exposure time 10d, rainfall intensity 13cm / h, raindrop diameter 0.5 ~ 4.5mm;
b, exposure time 5d, rainfall intensity 12cm / h, raindrop diameter 0.5 ~ 4.5mm;
c, exposure time 2d, rainfall intensity 10cm / h, raindrop diameter 0.5 ~ 4.5mm;
3. Press the power supply to adjust the horizontal wind speed to 18m/s.
4. Rotate the test sample so that the surface that is exposed to rain during use is exposed to rainwater. The duration of each side and the total test time are specified by the product specification.
5. The test sample is taken out from the rain test chamber. After recovery for 3 hours, the test is carried out according to the detailed specifications of the product. The results should meet the requirements of the detailed product specifications.
Note: This method is carried out in accordance with the requirements of the SJ 20128-1992 standard.
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