HLG-600h-42A & vero 29s

butterbudface

butterbudface

Well-Known Member
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I have 6 x vero29 4000k left over.

I'm going to buy this driver.

I have 230VAC input.

What is the best efficiency I can get with this driver?

I was thinking of driving 6 cobs at 2.4A. I have the cooling capacity.

Can anyone of you smart okes work out the total efficiency and compare it to a 1000hps?
 
1798umol is the unreflected ppf of a brand new 1000w Hortilux. ~25% for your reflector/bulb losses, around 1300 would be a comparable led equivalent. (DE is 2100?, so ~1550)

Vero29's are about 39% efficient there, ~91w each, 546w through the cobs. 213 Par watts, times qer 4.62 for v29 4000k 80cri, ppf of 983.

546w with 95% efficiency becomes ~573w

I don't quite understand power factor myself, so someone else would need to chime in on how that affects efficiency. (+5% more waste watts at 230v?)
 
Personally I would use at least 8, that way if one fails you are still running the rest low enough to absorb the extra current. Otherwise I would fuse every COB. 6 on that driver will put you over 100 watts a piece.
 
if u have a 600w driver
and 6 cobs
you will run each at 100w

there is only 1 possible efficiency(you asked about the best eff)

seen as you are trying to use the cobs why not just get one to run them at whatever wattage u want

this set up is comparable to HPS efficiency so not really much point imho
 
I have a few vero's going with shitty drivers. hps eff

I want a very efficient setup for a small cab grow for my 4 remaining vero's.

Is driving them at low currants the only way to get the eff up?
 
Driving them at low currents is the primary way to get the efficiency up. running them as cool as possible also helps. here's info on temperature effect. so running them at lower current is double advantageous, because not only do you get better efficiency at a given temp, the temp will go down for a given heatsink configuration. people round here call these phenomena "current droop" and "temperature droop"

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72V are no more efficient that 36V at a given wattage. that would be the same as running 12x 36V at 1.4A.

now you can buy 24 x 36V and run those at 700 mA... but you just doubled the cost of your cobs to gain 10% in efficiency. would take a few years of electric savings to pay that off
 
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