WeedSexWeightsShakes
Well-Known Member
Those of you with the fotop 800 48v boards all using hlg 600 48b drivers? I was wondering if you went with the hlg-600h-42a driver would you be able to run it over voltage and get more watts out of it?
The Chinese Quantum Board Knock Off Builds
- Thread starter zypheruk
- Start date
Rocket Soul
Well-Known Member
Id Id adv against using a 42v driver for this application, squeezing out those extra watts will make your driver pack up prematurely. Also, on the higher watt hlgs theres generally less overvoltage to play with, you might get one wont drive your boards at the voltage you want. Also more difficult to remote your driver due to voltage loss, every .1 V is gonna count in a setup like this
Edit: if you wanna cheapout a bit and get more power check out the meanwell lrs350, ive seen it for 35$
WeedSexWeightsShakes
Well-Known Member
Thanks his what what info I was looking for. Forgot it will lose a little with wire distance. I think I’ll just spend the money to get the hlg 480 48b. I assume the b version is better for this setup? I plan on running 3 fotop 800s per hlg480
Rocket Soul
Well-Known Member
I run A version generally. I like to be able to dial down voltage
WeedSexWeightsShakes
Well-Known Member
Cool the A version is like $5 cheaper. Save myself $20 or so lol. Thanks for your help.
4 hlg-480h-48A drivers is what I’ll order.
Nice just ordered 4 for $452
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wingerdinger
Well-Known Member
Hey mate
Did you end up measuring the draw of the 10bar? you wouldn't have a lux meter also ?
Not yet, I’ll check at the end of the month supplier waiting on stock. No lux meter either, I’ve been tempted to get one just haven’t seen the need
wingerdinger
Well-Known Member
Hey rocket
What sort of yields do you get with the fotops? gpw/ yield per 4x4 ect?
Rocket Soul
Well-Known Member
1.7 grams per watt, around 50g / square foot on 11week amnesia haze. This on our best trays, best lighting fixtures. 5 Fotops running on 3xhlg240 over 24 squarefoot, around +32 watts per square foot.
Were on our second or third run and still improving on this.
WeedSexWeightsShakes
Well-Known Member
Nice work. What’s your setup like? I hope I’ll be able to hit 1.5gpw with my new room. Going with 2 4x8 flood and drain tables. I have 2 450 watt 6 bar fixtures and 12 fotop lm561c boards. Running on 4 hlg 480s. Growing in reused coco and fabric pots.
Rocket Soul
Well-Known Member
That grow changes a lot over the year as some parts get too hot or cold to use for growing.
Basicly theres 3 flower spaces, small medium and large. The large one is on flipflop with the others, it provides heat for the others when theyre at lights off. This large one is the one im building leds for; its been out of use due to heat issues over the summer. The other 2 spaces are CMH. CMH does great, its a light that seems to allways perform better than they would on paper.
All of the spaces have the same setup when it comes to the plants: coco, drain to waste, 2-3 gallon pots, 6 to every 1x1.1m tray. Growing in aisles for easy access and airmovement. Double net trellis. Canna coco nutes with all the bells and whistles. You know, all pretty standard.
The leds we put in: too many different configs to mention really, especially since its clearly not in its final state. FoTops galore, some vesta strips, and now in the next month we will do stage 2. Should be good fun, we are building lights for 9-10 trays. Just need to wait for the last stuff to come in and to flower out this crop.
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Rocket Soul
Well-Known Member
So, 4x 480 and 2 x 450 watts? Thats a lot of light. And a lot of board. How do you fit in 6 fotops and another fixture in each 4x8?
WeedSexWeightsShakes
Well-Known Member
I might not be able to fit all 12 boards but I figured I might as well buy them since it was going to be 2 packs. The tables are 103” long. The led bars are 39.5” and boards are 11” wide. I’m figuring they’ll stick out a extra 2-3” on each side if I stuff all the boards in there lol. I guess I’ll find out what I’m doing when the time comes lol.
BuckeyeGrowGuy
Member
I received an 8 bar nalite today. My only concern is that it is advertised as 640 but my kill-a-watt has it at 701 watts. Should I be concerned about this? I attached a pic of the drivers and LED close ups. Each bar has 216 led so 1728 total. The diodes are advertised as LM561C. Please let me know what you guys think about it.
HydroFood
Active Member
They probably advertise 640w as in the power sent to and consumed by the LED.
Within the system as a whole, their will be inefficiencies such as losses at each driver.
640 / 701 = 91% system efficiency
Experts, please correct me if I’m wrong in any way. I had a hard time putting it in words.
BuckeyeGrowGuy
Member
That makes perfect sense I didnt think to consider that.
HydroFood
Active Member
To take it a step further, you can measure the voltage and current on DC side of each driver to confirm what the system is actually outputting to the LEDs.
I suspect it’s a good amount less than 640 because 91% efficiency is pretty got dang good for a light from China. That’s actually very good.
Now I’m curious what it outputting!
I suspect it’s a good amount less than 640 because 91% efficiency is pretty got dang good for a light from China. That’s actually very good.
Now I’m curious what it outputting!
BuckeyeGrowGuy
Member
I may get the multimeter out and investigate the dc side later. I emailed the vendor and they claim >90% efficiency. They took a while to ship but other than that I am okay with it. They said the driver was just upgraded with ETL certification so maybe it is pretty good.
HydroFood
Active Member
I would very much like to see the results if you do choose to test with your multimeter.
I wouldnt expect any other answer from those type venders. Same as the advertised diodes used. You never really know.
But if they can achieve such claims, hats off to them!
Is ETL a European code?
How much did you pay for it?
How big is it?
I wouldnt expect any other answer from those type venders. Same as the advertised diodes used. You never really know.
But if they can achieve such claims, hats off to them!
Is ETL a European code?
How much did you pay for it?
How big is it?