Wednesday, 13 February 2019

Electrical Enclosure IP Ratings - what they mean?

IP Ratings (Ingress Protection)

A two-digit number established by the International Electro Technical Commission, is used to provide an Ingress Protection rating to a piece of electronic equipment or to an enclosure for electronic equipment.

IP
6
8
“Ingress Protection”First Digit: Solids ProtectionSecond Digit: Liquids Protection

The protection class after EN60529 are indicated by short symbols that consist of the two code letters IP and a code numeral for the amount of the protection.

Example: IP65 

The two digits represent different forms of environmental influence:
 • The first digit represents protection against ingress of solid objects.
 • The second digit represents protection against ingress of liquids.

The larger the value of each digit, the greater the protection. As an example, a product rated IP54 would be better protected against environmental factors than another similar product rated as IP42.

IP TABLE:

IP..First digit:
Ingress of solid objects
Second digit:
Ingress of liquids
0No protectionNo protection
1Protected against solid objects over 50mm e.g. hands, large tools.Protected against vertically falling drops of water or condensation.
2Protected against solid objects over 12.5mm e.g. hands, large tools.Protected against falling drops of water, if the case is disposed up to 15 from vertical.
3Protected against solid objects over 2.5mm e.g. wire, small tools.Protected against sprays of water from any direction, even if the case is disposed up to 60 from vertical.
4Protected against solid objects over 1.0mm e.g. wires.Protected against splash water from any direction.
5Limited protection against dust ingress.
(no harmful deposit)
Protected against low pressure water jets from any direction. Limited ingress permitted.
6Totally protected against dust ingress.Protected against high pressure water jets from any direction. Limited ingress permitted.
7N/AProtected against short periods of immersion in water.
8N/AProtected against long, durable periods of immersion in water.
9kN/AProtected against close-range high pressure, high temperature spray downs.

IP protection of the PIP:

A PIP in the standard PIP housing is generally IP51 protected. Higher IP protection level with the standard PIP housing (up to IP54) can be reached with good positioning / orientation of the PIP. In other special PIP-housings, like a MIL-housing up to IP67 protection is possible.

IP protection of the PANEL-PIP:

The PANEL-PIP is available in various housings. Those allow a protection level of up to all around IP65.

Range

While we cover a huge range of electrical enclosures, our most common IP ratings are probably 65, 66, 67 and 68. So for quick reference, these are defined below:
  • IP65 Enclosure - IP rated as "dust tight" and protected against water projected from a nozzle.
  • IP66 Enclosure - IP rated as "dust tight" and protected against heavy seas or powerful jets of water.
  • IP 67 Enclosures - IP rated as "dust tight" and protected against immersion.
  • IP 68 Enclosures - IP rated as "dust tight" and protected against complete, continuous submersion in water.