IP rated solutions for enclosure protection against the elements.
When it comes to outside connections and the use of junction boxes there are many factors to consider especially when it comes down to the IP (Ingress Protection) rating classification of the unit. For an effective sealing of a connection there are two main factors to consider: the intrusion protection (denoted by the first number) and the water protection (denoted by the second number). Examples of the most common IP ratings which are ideal for outside connections are as follows:
IP 65 – Dust tight and protected against water spray from all directions
IP 66 – Dust tight and protected against low pressure water jets from all directions
IP 67 – Dust tight and protected against strong water jets and temporary immersion
IP 68 – Dust tight and protected against complete and continuous submersion in water
Having a high IP rating on an enclosure is preferred for outside use. WISKA’s COMBI Junction Box range has an IP rating of 66/67 making it the ideal choice for the types of environments described above. However, there are other issues that also need to be considered. Fluctuating temperatures and other environmental factors can create pressure inside tightly sealed enclosures which then leads to a build-up of condensation as well as damage to the seal. This results in the penetration and build-up of moisture and dirt.
Many products on the market claim IP68 protection without offering a solution for the build-up of condensation. Common practice to counteract condensation and pressure build up has been to put a drain hole in the enclosure. The issue with this is that you have then voided the IP rating of the enclosure defeating the original purpose. So, to overcome this issue in a correct manner there are 2 options:
Option 1
The use of a Venting device such as WISKA’s VentGLAND or VentPLUG. These devices allow air to flow through them thanks to their specially designed membranes, whilst at the same time preventing moisture. Due to their high IP rating (IP 68/69), this equalizes the pressure inside the enclosure preventing any condensation build up and pressure damage to the seals.
Option 2
The other option is with the use of insulating gel such as WISKA’s MP Gel, this product is a non-conductive silicone-based gel that comes as a 2-part liquid which is mixed and then poured in to fill the enclosure. After a short period of time (12 minutes at 23°C), the gel sets like a jelly which completely covers all the connections and protects against any moisture entering or building up within the enclosure. This solution will also allow the enclosure to be buried.
For more information on WISKA’s COMBI Junction Boxes, Venting Products or Gel solutions contact WISKA today via e-mail, telephone or visiting online at www.wiska.co.uk
About WISKA
WISKA are the market leaders in the manufacture and supply of an innovative and quality range of cable entry systems, junction boxes and gel jointing products. WISKA was founded in Hamburg in 1919, and has been trading in the UK since 2000. WISKA operates its own research and development facilities and production plants in Germany, ensuring all products meet the highest standards in excellence. WISKA prides itself on offering quality solutions with friendly helpful service. WISKA, make power smile.
