The test conditions of the box-type rain test box GJB150.8 are given according to three different test procedures of rain test, drip test and water resistance test of wind source.
1. Rain test with wind source: It mainly simulates the situation of wind and rain during natural rainfall. The equipment suitable for outdoor use and without rain protection measures, the main rain parameters include:
The rainfall intensity is at least 10cm / h;
Raindrop diameter 0.5 ～ 4.5mm;
The horizontal wind speed is not less than 18m / s;
Test time 30min;
The sample temperature is at least 10 ℃ higher than the rainwater temperature at the beginning of the rain test every 30 minutes;
The test water is the local water source.
Second, the rain test: mainly simulate dripping. Applicable to equipment that has rain prevention measures but may have condensed or leaking water on the exposed upper surface. Its main rainfall parameters include:
Raindrop diameter 0.5 ～ 4.5mm;
The drip volume is not less than 280 + 30-0 L / m2.h;
Test time 15min
3. Waterproof test: It is not to simulate natural rainfall, but to evaluate the waterproofness of the equipment under test to provide a higher confidence level for the waterproofness of the equipment. It is suitable for large-scale test equipment. It is used when the rain test with wind source cannot meet the test requirements. Its main rainfall parameters include:
Raindrop diameter 2 ～ 4.5mm;
Nozzle pressure is not less than 375kPa;
Test time 40min
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