IP rated luminaires for jet wash with high temp. water?

P,

I am at home and don't have easy access to the standard right now, and it is a while since I performed any IP testing, so I don't want to give any definitive advice that might turn out to be based on incorrect recollection.

But you asked for some thoughts, so here are some thoughts...

1) what is the operating temperature of the luminaires? As you wrote, the water temp should be +/- 5C of the equipment under test. They *might* have been tested at a representative operating temperature - hence with water similar to the range you quoted?

2) How big are the luminaires? Probably over 250mm, but just for interest be aware that for equipment <250mm the IP69 test is only carried out at 0degree angle (ie straight down), 30deg, 60deg and 90deg (ie horizontal). So in principle equipment could pass IP69 by simply having an enclosure like a bucket over it and open at the bottom...

3)… which leads on to... equipment meeting IP69 does not automatically meet IP66. Equipment rated IP69 from a reputable manufacturer should meet both ie be IP66 / IP69 - but it is worth checking. *If* I had to choose between something rated IP66 OR IP69, I would probably go for IP66. Of course, IP66 AND IP69 would be a different matter.  


There is a bit of info here.. https://f2labs.com/technotes/2018/01/05/ip69-vs-ip69k/


Hope that was of some use/interest.

P,

I am at home and don't have easy access to the standard right now, and it is a while since I performed any IP testing, so I don't want to give any definitive advice that might turn out to be based on incorrect recollection.

But you asked for some thoughts, so here are some thoughts...

1) what is the operating temperature of the luminaires? As you wrote, the water temp should be +/- 5C of the equipment under test. They *might* have been tested at a representative operating temperature - hence with water similar to the range you quoted?

2) How big are the luminaires? Probably over 250mm, but just for interest be aware that for equipment <250mm the IP69 test is only carried out at 0degree angle (ie straight down), 30deg, 60deg and 90deg (ie horizontal). So in principle equipment could pass IP69 by simply having an enclosure like a bucket over it and open at the bottom...

3)… which leads on to... equipment meeting IP69 does not automatically meet IP66. Equipment rated IP69 from a reputable manufacturer should meet both ie be IP66 / IP69 - but it is worth checking. *If* I had to choose between something rated IP66 OR IP69, I would probably go for IP66. Of course, IP66 AND IP69 would be a different matter.  


There is a bit of info here.. https://f2labs.com/technotes/2018/01/05/ip69-vs-ip69k/


Hope that was of some use/interest.