Heat sinks being used: 6 - CUTTER-HS14080P
COB's being used: 6 - CLU048-1818 80CRT
Drivers being used: 2 - Meanwell HLG-185H-48A
No Fans, wanted passive cooling.
I have 3 of the cobs wired in parallel to each driver.
I am running the drivers at around 60% output power each (around 150 watts per set of 3) - around 300 watts total when all 6 are on.
After like 3 hours being on the heat sinks max out temp wise at around 110 degrees F each with no additional cooling, ambient room temp is around 73 F.
I went as far as wiring up a DS18B20 temp probe to each heat sink, I have a raspberry pi monitoring the temps to each and figured I would just have it turn off the LED's if temps go over a certain # indicating some type of issue. (like 120 degrees F for example) My thought was, if one or more of the cobs in the sets of 3 go out the remaining current draw will go up, and the heat sink temps will rise.
So the question, is running them in parallel a big deal from a safety perspective? My understanding even if I was running one single CLU048-1818 with the HS14080P heat sink with the Meanwell HLG-185H-48A driver at 100% power output, I would be OK, its not going to start a fire.. I would just be pushing the heat sink to its max. (in the event that 2 cob's out of 3 failed and was left with 1 operating off the driver) And that would be if I was running output on the driver at 100%, which at the moment I am not.. am only at like 60%.
Also the 110 degree F on each heat sink, is that high or low? I still have to do a test to see what the heat sinks temps rise to when I run the drivers with 100% power out.
Thanks for any information.
COB's being used: 6 - CLU048-1818 80CRT
Drivers being used: 2 - Meanwell HLG-185H-48A
No Fans, wanted passive cooling.
I have 3 of the cobs wired in parallel to each driver.
I am running the drivers at around 60% output power each (around 150 watts per set of 3) - around 300 watts total when all 6 are on.
After like 3 hours being on the heat sinks max out temp wise at around 110 degrees F each with no additional cooling, ambient room temp is around 73 F.
I went as far as wiring up a DS18B20 temp probe to each heat sink, I have a raspberry pi monitoring the temps to each and figured I would just have it turn off the LED's if temps go over a certain # indicating some type of issue. (like 120 degrees F for example) My thought was, if one or more of the cobs in the sets of 3 go out the remaining current draw will go up, and the heat sink temps will rise.
So the question, is running them in parallel a big deal from a safety perspective? My understanding even if I was running one single CLU048-1818 with the HS14080P heat sink with the Meanwell HLG-185H-48A driver at 100% power output, I would be OK, its not going to start a fire.. I would just be pushing the heat sink to its max. (in the event that 2 cob's out of 3 failed and was left with 1 operating off the driver) And that would be if I was running output on the driver at 100%, which at the moment I am not.. am only at like 60%.
Also the 110 degree F on each heat sink, is that high or low? I still have to do a test to see what the heat sinks temps rise to when I run the drivers with 100% power out.
Thanks for any information.