How to Test IPX3 and IPX4 Water Splash Nozzles

IPX3 Water Splash Test:

Test Setup: The IPX3 splash test can be performed using either a swinging tube or a spray nozzle, depending on the device’s size. Water flow is controlled with a flow meter. In the swinging tube setup, water pressure is adjusted to achieve the correct flow rate. The tube swings 120 degrees (60 degrees on either side of the vertical) in approximately 4 seconds for a complete oscillation. The entire test lasts 5 minutes, with the enclosure placed at the center of the tube.
Water Dispensation: For larger enclosures, a portable spray nozzle is used. Pressure is adjusted to deliver 10 liters per minute (within a range of 50-150 kPa). The nozzle is positioned 60 degrees from the vertical, and a counterbalance shield is used.
Test Duration: The duration of the test is one minute per square meter, with a minimum of five minutes.
Assessment: After the test, the unit is cleaned and inspected for water penetration. Additional units can be tested at the manufacturer’s request for design assurance.

Test Setup: Similar to IPX3, the IPX4 test can use an oscillating tube or a handheld spray nozzle. For IPX4, the counterbalance shield is removed with controlled water flow.
Water Usage: The tube oscillates nearly 360 degrees. The spray distance is 200 mm, with a flow rate of 0.07 liters/min per hole, tested for 10 minutes. The handheld nozzle sprays the enclosure from all directions at 10 liters/min.
Test Duration: The duration of the test depends on the size, with a minimum of five minutes per square meter.
Assessment: Post-test, the unit is cleaned, opened, and evaluated for pass/fail criteria. Water should not interfere with the equipment’s intended operation or compromise user safety.