Ingress Protection: Spraying Water and Splashing Water (IPX3 & IPX4)
Ingress protection testing tests the level of protection an enclosure provides against intrusions. Two such sets of ingress protection tests involve exposing the equipment under test (EUT), to spraying water and splashing water. These tests are numbered IPX3 and IPX4. The first digit, represented by the “X”, ranges from 0 to 6 and specifies the protection from solid particles. The second digit, in the case of spraying water, would always be a 3, and in the case of splashing water, would always be a 4.
