ok so I plan to run 12 qb288v2's over a tray for a theoretical maximum 800w.
on a phone call with HLG he recommended to use 4 hlg-185h-c1050b drivers and run 3 boards on each in series.
thinking about it (after purchasing the drivers) i was confused because I thought that it would only run the boards at 1050mA which would be 49.33w each for a total of 147.99w per driver, and 591.96w total.
with some help on the growtube discord, I was told that I was correct and would be unable to run the wattage I want to run.
so we were thinking that an hlg-185h-c1400b would work because on the hlg website the VDC @ 1400ma is 47.7 * 3 = 143.1 fv
the hlg-185h-c1400b says a max fv of 143. I'm told this would be OK.
but after looking at the "Constant Current Driver Selection Tool" on the LED gardener website, when I choose the quantum board in the dropdown menu, with 3 as quantity, and 1400ma as current, it gives me a fv of 155.4.
VDC
so i figured oh maybe this chart is using the v1 specs instead of the v2. nope. for three v1 boards @ 1400 ma according to HLG's chart the fv would be 149.04.
Now the difference that I noticed was HLG's chart says its at 55*C and LED Gardener website says 60*C.
I am going to be running without heatsinks, but HLG told me as long as I run under 70w per board I don't need them. And seeing as 66.78w is what they will run @1400mA, I think I am ok.
But will an hlg-185h-c1400b run three boards? whats up with these differences in fv between the hlg website and LED Gardener website?
if there is an uncertainty should i just get 4 hlg-240h-c1400b and play it safe and lose some efficiency to the driver?
on a phone call with HLG he recommended to use 4 hlg-185h-c1050b drivers and run 3 boards on each in series.
thinking about it (after purchasing the drivers) i was confused because I thought that it would only run the boards at 1050mA which would be 49.33w each for a total of 147.99w per driver, and 591.96w total.
with some help on the growtube discord, I was told that I was correct and would be unable to run the wattage I want to run.
so we were thinking that an hlg-185h-c1400b would work because on the hlg website the VDC @ 1400ma is 47.7 * 3 = 143.1 fv
the hlg-185h-c1400b says a max fv of 143. I'm told this would be OK.
but after looking at the "Constant Current Driver Selection Tool" on the LED gardener website, when I choose the quantum board in the dropdown menu, with 3 as quantity, and 1400ma as current, it gives me a fv of 155.4.
VDC
so i figured oh maybe this chart is using the v1 specs instead of the v2. nope. for three v1 boards @ 1400 ma according to HLG's chart the fv would be 149.04.
Now the difference that I noticed was HLG's chart says its at 55*C and LED Gardener website says 60*C.
I am going to be running without heatsinks, but HLG told me as long as I run under 70w per board I don't need them. And seeing as 66.78w is what they will run @1400mA, I think I am ok.
But will an hlg-185h-c1400b run three boards? whats up with these differences in fv between the hlg website and LED Gardener website?
if there is an uncertainty should i just get 4 hlg-240h-c1400b and play it safe and lose some efficiency to the driver?
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