Water Spray Test Apparatus , IEC 62368-1 Annex Y.5.3 Water Spray Test

Water spray test apparatus , IEC 62368-1 Annex Y.5.3 Water spray test

Y.5.3 Water spray test
The water-spray test apparatus, using fresh water, is to consist of three spray heads mounted in a water supply pipe rack as shown in Figure Y.2. Spray heads are to be constructed in accordance with the details shown in Figure Y.3. The outdoor enclosure is to be positioned in the focal area of the spray heads so that the greatest quantity of water is likely to enter the outdoor enclosure. The water pressure is to be maintained at 34,5 kPa at each spray head. The outdoor enclosure is to be exposed to the water spray for 1 h.
Unless the construction is such that a test on one side of the outdoor enclosure is representative of a test on another side, the test is to be repeated on other sides of the outdoor enclosure as necessary.
The water spray is to produce a uniform spray over the surface or surfaces under test. The various vertical surfaces of an outdoor enclosure may be tested separately or collectively, provided that a uniform spray is applied.
The top surface of the outdoor enclosure shall be tested by applying a uniform spray from nozzles located at proper heights (see the focal point in Figure Y.2), if
– there are openings in the top surface; or
– from an examination of the construction, it is determined that run-off from the top surface could cause water ingress at a vertical surface which would not be detected by the test of the vertical surface.
If there are openings in a vertical surface, located less than 250 mm above ground level, such that water ingress from rain bouncing upwards from the ground surface might occur, a test shall be performed, spraying water on the ground surface in front of such openings, over such distance necessary to cause the deflected spray to reach the outdoor enclosure. This test is not carried out if, from an examination of the construction, it is determined that the test of the vertical surface adequately assures compliance.

Water-spray test spray head