Quick question on HLG-600

I wanna run 4 36v photon wavy boards and 4 vero29 36vs all at 2100mA. I know it could be done with 2 320's , but what about the 600? which one would I want and what MA would I be at running these with this driver?

HLG-600H-36B - This will work to light all 8 with 1 driver. you will have to wire them in parallel so the 36v stays the same and just divide the 16,700 mA by 8 and it is 2087.5 mA so right around the 2100 you were looking for.


JM2C this is a 600w power supply and will get very hot, I would run two 320's so it doesn't run as hot personally.

nc208 said:

HLG-600H-36B - This will work to light all 8 with 1 driver. you will have to wire them in parallel so the 36v stays the same and just divide the 16,700 mA by 8 and it is 2087.5 mA so right around the 2100 you were looking for.


JM2C this is a 600w power supply and will get very hot, I would run two 320's so it doesn't run as hot personally.

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I'd be running the driver outside the tent.

I'm referring to life of the drivers. Not your tent temp sorry. The drivers will last longer the cooler they operate.

nc208 said:

I'm referring to life of the drivers. Not your tent temp sorry. The drivers will last longer the cooler they operate.

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What is the temp difference between them that you are referencing? How much hotter is the 600 running than 2 320's at the same wattage? Are your systems running outside of spec that reliability/lifetime is a concern on these 7 year warrantied driver?

Greengenes707 said:

What is the temp difference between them that you are referencing? How much hotter is the 600 running than 2 320's at the same wattage? Are your systems running outside of spec that reliability/lifetime is a concern on these 7 year warrantied driver?

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5 degrees Celsius is the actual operating temperature difference,
the 320 operates at a temp of 85 degrees C at 100%
the 600 operates at a temp of 90 degress C at 100%

Overall a 5.5% difference in operating temperature, while not necessarily a deal breaker it is important to note that yes running 2 x 320's will operate 5 degrees cooler than running one 600.

nc208 said:

5 degrees Celsius is the actual operating temperature difference,
the 320 operates at a temp of 85 degrees C at 100%
the 600 operates at a temp of 90 degress C at 100%

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the curves you linked are load ratings for the driver at various temps, not the other way around

600s have almost twice the surface area and should operate at similar temps

most of these run 60-70C in free air when cranked up, which is within the full lifespan rating of the driver

I'm referring to the top right picture in this pdf,
@CobKits how is this picture showing load ratings at various temps? The way I interpret this chart is at whatever % your driver is running then that will be operating temp.

x= controlled variable in almost every X/Y graph

at a given ambient/case temperature, the resulting available load on the driver is shown

the first graph is prob just an estimation based on operating efficiency at different voltages, none of these drivers have sensors to monitor ambient temp and the relationship between ambient temp and case temp is not fixed

the second graph shows that above 85C case temp the driver automatically shuts down and load goes from 100% to 0%

if you look at the test report it shows the same 100K mtbf at up to 70C. ot also shows same 85C hi temp shutoff as datasheet

i dont feel like adding fans or restricting my drivers output to try to squeak it from 25 to 30 years of service im lucky to live that long



source: http://www.meanwell.com/webapp/product/search.aspx?prod=hlg-320h-c&pdf=SExHLTMyMEgtQzE0MDAtcnB0LnBkZg==&a=2

Afaik, the veros and the wavys and dont have the exact same voltage at 2100; i think the wavys have slightly less voltage so they might be pulling slightly different amps. Also temprature droop will be different which will add to different voltage, again pulling different amps. Im not sure if the difference would matter. I would run on separate drivers just to avoid having the words "thermal runaway" on my mind all the time. Also separate dimming might be nice. Good luck with those wavy boards they look lovely. Enhanced white spectrum with board like spread, no heatsink upto 2100mA seems like the ticket. Too bad they wont ship outside US

Thank you @CobKits for picking up what was laid down.

@nc208 as cobby already showed, you are misunderstanding the data sheet. They will operate at roughly the same no matter what choice. The 600 is a 2 output channel driver...aka 2 320's in one housing.
I have many of both driver...all meanwell hlg's pretty much. And no matter which one, when looked at on a load % basis, they all run the same Tc basically.

@Airwalker16
The issue you will have is the voltage limits. The vero's are not 36v, they are a 38v cob(37v more realistically), and will cause some current correction issues more than likely and effect the boards that are on the same string or wire in parallel to.
But would drive the boards, or anything that is 36v or less just fine if uniform components are used. .

If all these are running in paralell; wouldnt the veros just draw whatever current they can at 36 Volts? Around 1050mA at 25 degrees according to my early rev data sheet, a bit more bit temp droop but probably less than 2100 mA. So if youre running 8 paralel cricuits, 4 veros will draw probably less than half the wattage. What happens with the rest? Would it all be passed to the wavys, possibly over max amp for the board? Or will it just feed the boards whatever they can take at 36 V? Im pretty sure the max amps of the wavys corresponds to 36V, if you then factor in temp droop lowering the voltage a bit it would feed even more amps to the board, over max amp?

This doesnt seem well concieved to me the more i think about it. Especially if your running the wavys without heatsinks which should be fine on 2100 but to me it looks very hard to control how much amp youre hitting the boards, they will probably draw more than 2100. Im not too sure, theres more experienced people on this thread who could chime in. This screams thermal runaway to me.

Thanks for all the great input, fellas!!! 2 320''s it is!!

Really looking forward to those wavys in action, be sure to post the grow!

Rocket Soul said:

Really looking forward to those wavys in action, be sure to post the grow!

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Ya me-too!!! hopefully it'll be very soon

Im looking into getting a US friend buy me some boards and then shipping them over here. Let me know how you go along

Invertronics has a 600 CC that would work much better.

The elephant in the room is almost all drivers, start to derate over 50DegC

welight said:

The elephant in the room is almost all drivers, start to derate over 50DegC

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50C ambient not case temp which is the real determining factor. See 85C case temp is ok. If your room is 50C your drivers are the least of your concern.

Stephenj37826 said:

50C ambient not case temp which is the real determining factor. See 85C case temp is ok. If your room is 50C your drivers are the least of your concern.

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Yep, the issue though is what is ambient, ambient of a driver sitting on top of a fixture pumping out heat is different to remote mounted drivers, the room doesnt need to be 50C for your driver to be experiencing metal to metal above room ambient