800 watt bridgelux outdoor floodlights grow

Did a bit of digging into the vf and A range of 'Bridgelux' 100W china COBs, definitely looks like 2 COBs per driver ran parallel

They must match the COBs really well to pull that off

nevergoodenuf said:

I'm looking at the drivers and they say 1.4A input each. At the wall it read 1.6A. Am I right guessing that these drivers are dialed way down. The drivers have 2 dials, VO adjust and IO adjust. Anyone know what each is for.

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With IO adjust you can set the brightness. It will probably be maxed out right now. VO adjust you can leave as is.

nevergoodenuf said:

I was just reading that as you posted. Thanks. Yes, that is 100F. If you could laid out the heatsink and casing flat it measure 42"x17" of cooling surface. The drivers have over temp. protection. I'm thinking these are just underdriven to prevent them from heat issues.

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Look ...
I'm not aware of the exact type of arrays used ...
I mean ,lately in Asian market ,there are so many led arrays....

(with almost 99.99% of them made from Brigededelloux Oiriginal chips ,originating of course ,
from a mysterious place,somewhere in Ca,USA ,that exports some thousands of tons of led chips ( every month ) ,
trying to cover the needs of the Asian Led manufacturers ...Anyway ...

Those four arrays can't be more than 50 W each.

So,most probably they 've a Vf or 32-35 VDC and If of 1400mA max ....

And those four are not connected in series ...

(Then total Vf would have been ~ 128-140 V ) ...

Worst case they are all connected parallel .....
( Same vf each ,string , Io max / 4 = 2.65 /4 = 0,660 ...
660 mA ...Way underdriven than the arrays max of 1400mA ..
actual power dissipation of each array ,ain't 50W but more like 23,2 W ..

If one fails ...
Then the rest three will run at 0.833 A
At ~ 31 Watt ..

If one more fails ...
Then the rest two are close to their spec max ...

If one of them fails,it drags the other along ,towards the silicone heaven ...


There's another type of lower wattage somewhat that operates at 9.5-10.5 V ...
And max If of 3500mA ...

Those can actually be connected in series ....

Say 4x10=40 V ...

And they run at 2.65 ...

That case sounds more possible ...
But actual power of each array is not 50 W ,but more like 10.5x 2.65 = 27.8 W (at best case ) ...

nevergoodenuf said:

I was just reading that as you posted. Thanks. Yes, that is 100F. If you could laid out the heatsink and casing flat it measure 42"x17" of cooling surface. The drivers have over temp. protection. I'm thinking these are just underdriven to prevent them from heat issues.

Click to expand...

At what ambient temperature ,the back of the heatsink measured 100F ?
after six hours ....
Naturally convecting ...

Room stays under 80*f, usually 75*. And there is 2 drivers and 4 COBs. I have not checked if they are in series or parallel.

The uniformity compared to the Sol9 is far superior. And it is in parallel.

I will also have the wirenuts changed to these wirelocs. The unit will get moved to much to trust the wirenuts. I learned that from DHL. I'm glad that happened now. I also want to change the hangers to the Y cable hangers, like the rapidled has, so hanging at an angle is easier to adjust.

Heatsink & driver pics please???

Parallel ?
Not so good ...
These arrays are of 32-35 Vf , If =1.4 A ...
If Drivers Io is maxed out (2.65A ) ,then each array is
35 V * 1,325 A = 46,375 Watts .(best case )
If one array fails ....
The other will follow in less than a sec ...

To avoid a mishappen like this ,Io of the driver has to be set @1.4A ..
But then each array will have a power of 35 *0.7 (best case )= 24.5 W ...
(Which actually ,might be the case ...You can check it out ,with a multimeter ...)

Ok, I just got work that this can be made with 1/3 5500k to 6000 and 2/3 3000k to 3500k. This unit can be made in 400w and 500w. It uses Cree SMD 2525 and a 60* reflector. Which way looks better. This might need more height, so not as good for the small grow. I never asked about this when I made my order. Now I wishing I had both to test. Waiting on China for prices.

The H shaped groove in the heatsink is for the adjustable brackets.

Now I'm wishing I got one of these and 2 of the others. I could sell these for around $850 for the 500w. The 400w wouldn't be worth ordering for a $100 difference. My only concern is the 60* .

Somebody grew with one of these....see if i can find the journal...

Found it....some of the photos are missing...

https://www.rollitup.org/t/my-warehouse-led-bud.757410/

EDIT: Link to site...http://www.gielight.com/products_detail/&productId=40436d30-a3d6-4dc6-8847-d4d5846c113c.html

Thanks Chronic, same housing but only 200w. And the shipping ends up costing almost 20% of the unit price. That's why I'm looking at a larger order of possibly both styles. I need to check if they have a wider reflector. I want to see 1 500w unit over a 4'x4' tray. This looks like it could replace a 1000w HPS by itself. The 200w units I have are might be better for the small/personal grower or someone that will slowly expand there grow. What do you guys think about it using the Cree SMD 2525?

If anyone has any questions on either light, I'm still in contact with this company. So far their service has been exceptional and they are very will to listen to my suggestion on build design and packaging. They are removing the bracket for shipping (smaller box) and are changing out the less reliable wirenuts for wirelocs.

nevergoodenuf said:

What do you guys think about it using the Cree SMD 2525?

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i know you arent in contact with the company 'GIELIGHT' that i linked....but the higher wattage panels are using Cree 3020's, XB-D's and the 600w is using Osram chips...

I couldn't get their site to come up. Did you see pricing for the 600w? And I don't know if they will do a mixed whites and this company has already confirmed that they will/ can do mixed whites. I will ask about other led options. What type led would be your first and second choice for a 500w unit.

nevergoodenuf said:

I couldn't get their site to come up. Did you see pricing for the 600w? And I don't know if they will do a mixed whites and this company has already confirmed that they will/ can do mixed whites. I will ask about other led options. What type led would be your first and second choice for a 500w unit.

Click to expand...

Yeah...thats weird....i cant get it to come back up either....and the page i can get doesnt have them...

So yeah i like the XB-D's, then the 3020's

I did find this on Ali...

http://www.aliexpress.com/item/MeanWell-driver-CREE-500W-industrial-led-light-with-5-years-warranty/1498650607.html

and their website >>>>>>>>>> http://www.qinhanled.com/

>>>>>>> http://www.qinhanled.com/Product-318.html (like the XT-E's used)