Running COB's and MW Drivers on 240V

Ez crew

Been lurking here for the last week soaking up all the awesome info on building lights, much respect out to everyone giving up all the goods.

Anyway I'm in New Zealand and we run at 240V at the wall so I'm just wondering if anything changes the application of building and running COB's at this voltage?

I'm about to grab 6 x 3070's 3000k and 2 x MW HLG-185H-C1400B
Am I right in using two drivers? From what I can see people are running up to 4 off one. I'm thinking 3 off one and run it better.

Can the HLG-185H-C1400B run on 240V? The specs say Universal AC input / full range (up to 305VAC)

Does any of the "efficiency" ratings change when running 240V ?

Respect for any help on this

Hey man,
don't worry you can run it, your effeciency might be a little bit higher than on 230V

There shouldn't be any problems.

You should get a slight bump up in efficiency on 230V.

It is true that CXA3070 is not a great match for the HLG-185H-C1400 because if you try to run 4 the output will drop below 1050mA. But if you se the HLG-185H-36A you will be able to run 4 CXA3070s and get almost 1.4A.

SupraSPL said:

You should get a slight bump up in efficiency on 230V.

It is true that CXA3070 is not a great match for the HLG-185H-C1400 because if you try to run 4 the output will drop below 1050mA. But if you se the HLG-185H-36A you will be able to run 4 CXA3070s and get almost 1.4A.

Click to expand...

Ok safe, I forgot to mention I'll be running CXB 3070's does that change anything?

I take it the C1400B is suited to the CXB 3590?

My thinking was getting the 2x C1400B's now will have me covered when I upgrade to something better down the track

Oh gotcha, CXB3070s are OK to run 4 on an HLG-185H-C1400. Actually you would be better off running 3 than 4 because you will get slightly better diver efficiency that way. The HLG-120H-C1400 is a good match for 3 CXB3070s though.

SupraSPL said:

Oh gotcha, CXB3070s are OK to run 4 on an HLG-185H-C1400. Actually you would be better off running 3 than 4 because you will get slightly better diver efficiency that way. The HLG-120H-C1400 is a good match for 3 CXB3070s though.

Click to expand...

Yea cheers man, I just found you driver thread with the spread sheet, nice work.

From that I've seen I could probably run 3x CXB3070's on the 1400B at a bit over 50w each, could I push it to 55W each?

Am I correct in thinking this will give me a 330W light (6 CXB3070's @ 55W each) and is this the actual power draw at the wall or will it be lower?

Mad respect for all your work you give to this community SupraSPL

Thnx man, the A version will put out a bit more than the B version but they both will put out more than 1400mA at max. So you might be able to get 156W dissipation from 3 CXB3070s on HLG-120H-C1400B or 208W dissipation from 4 CXB3070s on HLG-185H-C1400B.

Edit: Hold up sorry just seeing if I have this right... so if my driver is rated at 144V and my COB's are 36V that means you can run 4 36V COB's on that driver eg: 4x36=144...correct ? the amount of volts per COB can't exceed what the driver is rated at.

and if the driver is rated at 200W I can run 4 COB's rated at 107W max at 50W (half power)each to reach the drivers output of 200W. So in theory I could run 3x CXB3070's on 1400B at 65W each.

Is this where the whole efficiency thing comes in yea? I take it running them hard is less efficient

There are two types of efficiency at play, the COB efficiency and the driver efficiency. The driver efficiency is what I was referring to and is the less important of the two. If you run the driver close to its maximum you will get the most driver efficiency, but it is not a large difference.

The voltage of each COB depends on the driver current and temperature, but here is an estimate at each different current.

Bonjour
You didn't say what you planning to do with the cob?
Vegg...bloom. ..both...size of your box...grow style (lst sog scrog...) this will help for advices...
And where are you going to buy your parts?
You know kb is the cheapest...do you?
And since you are in NZ (looks like a wonderful country btw!) I am not sure for hs...check tme.com and hsusa or a local solution...
There's only 56 $ difference between a cxb 3590 3500ºk 36V CD 200w panel and a cxb 3070 3500ºk BB 200w panel!.3070:32.50 $/3590:46.50 $ all the other parts are the same!
Have a great build★

littlejacob said:

Bonjour
You didn't say what you planning to do with the cob?
Vegg...bloom. ..both...size of your box...grow style (lst sog scrog...) this will help for advices...
And where are you going to buy your parts?
You know kb is the cheapest...do you?
And since you are in NZ (looks like a wonderful country btw!) I am not sure for hs...check tme.com and hsusa or a local solution...
There's only 56 $ difference between a cxb 3590 3500ºk 36V CD 200w panel and a cxb 3070 3500ºk BB 200w panel!.3070:32.50 $/3590:46.50 $ all the other parts are the same!
Have a great build★

Click to expand...

Hey mate,

Yea I'll be using for both vege and flower covering 1.2 x1.2m, more than likely scrog

Yea got my COBs and drivers from KB, jerry gave a good price on some AD bin's and even better price on the drivers compered to mouser and digikey,

Yes NZ is a awesome country, I'm pretty lucky to live in one of the most beautiful parts of the world

Heat sinks and other parts will be sourced locally, the thing thats a killer is cost of postage when buying from the states alot of the time its just down right ridiculous. I'll be hearing back from local heat sink manufacture today, looking at using something like 150mmW x 42mmH with 16 fins and I can buy it by the meter, hopefully it wont be to expensive.

My budget is pretty tight so thats why I went the CXB3070's, I'm not worried about having the best right now I'll upgrade later when prices come down.

Stay safe

Bonjour
One meter of this hs will cool 4 cxb with a 140mm fan on it
But if you plan to enlight 4*4 with only 6 you better make 6 separated panels...even with 8 (or 4 in the middle and 4 on the corners! )
My 3.5*3.5*4.5 with 4 cxb 3590 3500ºk 36V cd ! 1400mA (200w)
Have a great day ★