| Waterproof Grade of the Equipment Enclosure (IP Code) |
| Grade | Brief Description | Definition |
| IPX0 | No Protection | / |
| IPX1 | Protection Against Vertically Falling Water Drops | Vertically falling water drops have no harmful effects on the equipment enclosure. |
| IPX2 | Protection Against Vertically Falling Water Drops When the Enclosure is Tilted Up by 15° | When the enclosure is tilted up by 15° from any side, vertically falling water drops will have no harmful effects. |
| IPX3 | Protection Against Spraying Water at ±60° | Spraying water, when inclined from the vertical direction to any side up to ±60° and sprayed onto the enclosure, has no harmful effects. |
| IPX4 | Protection Against Spraying Water from Any Direction | Jet water sprayed onto the enclosure from any direction within ±180° has no harmful effects. |
| IPX5 | Protection Against Water Jets | Water jets from a water gun, when shot at the enclosure from any direction, have no harmful effects. |
| IPX6 | Protection Against Strong Water Jets | High - pressure water jets from a water gun, when shot at the enclosure from any direction, have no harmful effects. |
| IPX7 | Protection Against the Effects of Temporary Immersion | When the enclosure is temporarily immersed in water under standard pressure and time conditions, the amount of water ingress is unlikely to cause harmful effects. |
| IPX8 | Protection Against the Effects of Continuous Immersion | Under the conditions negotiated between the manufacturer and the user, which are more severe than those of characteristic number 7, when the enclosure is continuously immersed in water, the amount of water ingress will be unlikely to cause harmful effects. |
| IPX9K | Protection Against High - Temperature and High - Pressure Water Jets | Four nozzles are distributed at angles (0°, 30°, 60°, 90°) as per the standard drawing. The water temperature for flushing can reach up to 80°C ± 5°C. |
