Ingress Protection forms part of the process of determining the level of protection provided by equipment enclosures. The test methods and definitions of the Ingress Protection (IP) Codes are covered under the BS EN 60529, 60598 and DIN40050:9 Standards.
The protection offered by enclosures should consist of the following:
- Protection of persons against access to hazardous parts.
- Protection of equipment inside the enclosures to ingress of solid foreign objects.
- Protection of equipment in the enclosures against harmful effects due to the ingress of water.
The first digit of the IP rating represents the level of protection from solid ingress, and the second digit represents the level of protection from liquid ingress according the table below:
|IP Rating||Level of Protection|
|Solid ingress||IP1X||Protected against solid objects greater than 50mm diameter|
|IP2X||Protected against solid objects greater than 12.5mm diameter|
|IP3X||Protected against solid objects greater than 2.5mm diameter|
|IP4X||Protected against solid objects greater than 1.0mm diameter|
|IP5X||Dust protected (with or without vacuum applied to the product)|
|IP6X||Dust tight (with a vacuum applied to the product)|
|Liquid ingress||IPX1||Protected against dripping water|
|IPX2||Protected against dripping water when tilted up to 15 degrees|
|IPX3||Protected against spraying water|
|IPX4||Protected against splashing water|
|IPX5||Protected against water jets|
|IPX6||Protected against powerful water jets|
|IPX7||Protected against the effects of temporary immersion in water|
|IPX8||Protected against the effects of continuous immersion in water|
|IPX9K||Protected against high temperature and high pressure water jets|