IPX1 and IPX2 are drip test devices that have been developed based on technical parameters specified in GB4208-2007, which corresponds to GB/T4942.1-2006 and GB10485-2007 for automobile lamp housing protection. Key technical specifications include:
Water spray aperture
0.4mm
Drip tank height adjustable range
200~2000mm
Rainfall
3~5mm/min
Drip area
800mm × 1000mm
Drip tank height
300mm
Sample stage size
500×400mm with T-shaped fixing groove
Sample stage angle
Adjustable from 15 to 45 degrees (relative to vertical) (for IPX2)
Sample stage speed
1r/min (for IPX1)
For IPX3 and IPX4 tests, there are two methods available: the swing tube method and the hand-held sprinkler method. The test sample is mounted on a suitable fixture to withstand the water jet produced by a semi-circular elbow. If the sample is too large for the swing tube method, the hand-held sprinkler method should be used instead. When using the swing tube method, the following conditions must be met:
1. The elbow radius should be either 1000mm or 1600mm, and the pipe should be equipped with nozzles spaced 50mm apart within the designated angle range. The pipe should be swung 180° as much as possible.
2. The test water must be purified or distilled water that meets the required standards.
3. The support table for the test sample must be open, capable of replacing the function of a water retention plate, and also able to rotate smoothly.
The following table outlines the test conditions for these levels:
Nozzle angle
Pipe swing angle
Duration
Nozzle diameter (mm)
Water flow rate (L/min)
Approximate water flow pressure (KPA)
(°)
(°)
Min
0
60
±60
10
0.4
0.1±0.005
80
30
±90
60
90
0.8
0.60±0.03
40
We've covered the key details for IPX1, IPX2, IPX3, and IPX4 tests. In the next part, we’ll go over the remaining levels and their specific requirements. Stay tuned for more in-depth information on rain test chambers and how they ensure product reliability under various weather conditions!
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