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IP Rating System - Explained

Posted by Admin on 2/3/2013
This guide has been taken from Axis' website at the following link: http://www.axis.com/products/cam_housing/ip66.htm

The IP rating system

  • IP stands for Ingress Protection
  • The rating’s first digit e.g. IP66 relates to the ingress protection against dust (6 means dust tight, see the table below)
  • The second digit e.g IP66 relates to the ingress protection against water (6 means protected against heavy water jets, see the table below)
Protection against solid objects
1st DigitDescriptionDefinition
0Non-protectedNo special protection
1Protected against solid objects greater than 50 mmA large surface of the body such as the hand (no protection against deliberate access). Solid objects exceeding 50mm diameter
2Protected against solid objects greater than 12 mmFingers or other objects not exceeding 80 mm in length. Solid objects exceeding 12 mm diameter
3Protected against solid objects greater than 2.5 mmTools, wires, etc of diameter or thickness greater than 2.5 mm. Solid objects exceeding 2.5 mm diameter.
4Protected against solid objects greater than 1.0 mmWires or strips of thickness greater than 1.0 mm. Solid objects exceeding 1.0 mm
5Dust protectedIngress of dust is not totally prevented but dust does not enter in sufficient quantity to interfere with satisfactory operation of the equipment
6Dust-tightNo ingress of dust
 
Protection against liquids
2nd DigitDescriptionDefinition
0Non-protectedNo special protection
1Protected against dripping waterDripping water (vertically falling drops)
2Protected against dripping water when tilted up to 15ºVertically dripping water shall have no harmful effect when the enclosure is tilted at any angle up to 15º from its normal position
3Protected against spraying waterWater falling as spray at an angle up to 60º  from the vertical shall have no harmful effect
4Protected against splashing waterWater splashed against the enclosure from any direction shall have no harmful effect
5Protected against water jetsWater projected from a nozzle against the enclosure from any direction shall have no harmful effect
6Protected against heavy seasWater from heavy seas or water projected in powerful jets shall not enter the enclosure in harmful quantities
7Protected against the effects of immersionIngress of water in a harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time
8Protected against submersionThe equipment is suitable for continuous submersion in water under conditions, which shall be specified by the manufacturer