Ingress protection(IP) Rating for Electrical Enclosure

IP65

Ingress protection(IP) Rating for Electrical Enclosure

Ingress Protection (IP) rating:

  • IP letters stand for “International Protection” rating or “Ingress Protection” rating. IP ratings are defined in international standard (British BS EN 60529, IEC 60509).
  • It is used to explain levels of sealing effectiveness of electrical enclosures against foreign bodies (tools, dirt etc) and moisture.

Meaning of IP Rating:

  • The IP rating code is a two-digit (or optionally three-digit) designator to standardize the rating of protection level against intrusion of solids and liquids into mechanical and electrical enclosures. An enclosure can be a piece of equipment, an assembly unit, a cable or simply a connector.
  • The numbers of IP of each have a specific meaning.
  • 1st Digit:The first Number indicates the degree of protection from moving parts, as well as the protection of enclosed equipment from foreign bodies.
  • 2nd Digit: The second Number indicates the protection level that the enclosure enjoys from various forms of moisture (drips, sprays, submersion etc).
  • 3rd Digit:The third digit in the designator is not part of the official IEC standard and is sometimes included (but more often omitted) to reference additional protections.

Acronym of IP Rating:

                                                                IP Rating Digits

IP RatingFirst DigitSecond DigitThird Digit (Optional)
Solid Objects ProtectionLiquids ProtectionMechanical impacts

0

No special protectionNo protection.No protection.
1Protected against solid objects greater than 50mm in diameter ( such as large part of the body like hand)Protection against vertically falling drops of water e.g. condensation.Protects against impact of 0.225 joule (150 g weight falling from 15 cm height)
2Protected against solid objects over 12 mm in diameter (person’s fingers)Protection against direct sprays of water up to 15° from the vertical.Protected against impact of 0.375 joule (250 g weight falling from 15 cm height)
3Protected against solid objects not greater than 80mm in length and 12mm in diameter (tools and wires).Protected against direct sprays of water up to 60° from the vertical.Protected against impact of 0.500 joule (250 g weight falling from 20 cm height)
4Protected against solid objects larger than 1 mm diameter (tools, wires, and small wires).Protection against water sprayed from all directions (limited ingress permitted).Protected against impact of 2.0 joule (500 g weight falling from 40 cm height)
5Protected against dust limited ingress (no harmful deposit).Protected against low pressure jets of water from all directions (limited ingress).Protected against impact of 6.0 joule (1.5 kg weight falling from 40 cm height)
6Totally dust tight.Protected against temporary flooding of water, e.g. for use on ship decks (limited ingress permitted).Protected against impact of 20.0 joule (5 kg weight falling from 40 cm height)
7N/AProtected against the effect of immersion between 15 cm and 1 m.N/A
8N/AProtects against long periods of immersion under pressure.N/A

Example:

  • IP65 Enclosure:IP rated as protection against dust (6) and protection from low water pressure (5).

IP65

  • IP66 Enclosure– IP rated as protection against dust (6) and protected against heavy seas or powerful jets of water (6)

IP66

  • IP67 Enclosure : Protected from immersion between 15 centimeters and 1 meter in depth.
  • IP68 Enclosure : Protected from long term immersion up to a specified pressure.

 

 

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