IEC 60529 Oscillating Tube Tester, IPX3/IPX4
The test is made using one of the two test device described in
figure 4 and in figure 5 in accordance with the relevant product
a) Conditions when using the test device as in figure 4(oscillating
the total flow rate is adjusted as specified in table 9 and is
measured with a flow meter.
The oscillating tube is provided with spray holes over an arc of
60°either side of the centre point. The support is not preforated.
The enclosure to be tested is placed at the centre point of the
semicircle. The tube is caused to oscillate through an angle of
120°, 60°on either side of the vertical, the time for one complete
oscillation (2 x 120°)being about 4s and the test duration being 5
The enclosure is then turned through an horizontal angle of 90°and
the test is continued for a further 5 min.
The maximum acceptable radius of the oscillating tube is 1600mm.
If for certain types of apparatus it is not possible to wet all
parts of the enclosure undere test, the support of the enclosure
may be moved up or down. The hand-held test device as in figure
5(spray nozzle) should be used as a preference in such cases.