Understanding IP Ratings: IP65, IP67, and IP68

In demanding operational environments, ensuring that equipment can withstand exposure to dust and water is crucial. The Ingress Protection (IP) rating system, defined by the International Electrotechnical Commission (IEC), provides a standardized method to classify the degrees of protection offered by enclosures of electrical equipment against the intrusion of solid objects and liquids.

Decoding the IP Rating

An IP rating consists of two digits:

  • First Digit (Solid Particle Protection):

    • 6: Complete protection against dust ingress.

 

  • Second Digit (Liquid Ingress Protection):

    • 5: Protection against water jets from any direction.

    • 7: Protection against immersion in water up to 1 meter for 30 minutes.

    • 8: Protection against continuous immersion in water beyond 1 meter, with the exact depth and duration specified by the manufacturer.

Comparing IP65, IP67, and IP68

  • IP65: Devices with this rating are dust-tight and can withstand water jets from any direction. Suitable for environments where equipment may be exposed to rain or low-pressure water jets but not submerged.

  • IP67: Offers the same dust-tight protection as IP65 but adds the capability to withstand temporary immersion in water up to 1 meter for 30 minutes. Ideal for scenarios where accidental submersion might occur.

  • IP68: Provides protection against continuous immersion in water beyond 1 meter. The specific conditions (depth and duration) are defined by the manufacturer. This rating is essential for equipment that operates in or around water for extended periods.

Selecting the Appropriate IP Rating

  • Choosing the correct IP rating depends on the specific environmental conditions the equipment will face:

    • IP65: Suitable for general outdoor use where exposure to dust and water jets is expected.

    • IP67: Recommended for environments where temporary immersion is possible, such as in heavy rain or accidental drops into water.

    • IP68: Necessary for equipment that requires prolonged submersion, such as underwater operations or installations in flood-prone areas.

    Understanding these ratings ensures that the selected equipment will perform reliably in its intended environment, balancing protection needs with cost considerations.