Samsung led strip on 600h-36b

coreywebster

coreywebster

Well-Known Member
SamWE19 said:
I’m still confused by that led gardener link tbh.

The drivers max current will be overrated if I put 54 strips on it.

Unless the current is only split on parallel strings. So

On the 3 series strings the 3 parallel strings get a total of 12v and 16.7a but that means we have just tripled the total amps... but I guess that is theoretically possibly as the amps must go up when bolts go down? I think. We’re still at a total of 16.7a we have just made the wiring so that the 16.7a gets used twice? That doesn’t sound right...

If that’s true each parallel string of 18 strips would split 16.7a for 0.92a 12v per strip.

Each strip using around 11w x 54 594 total watts
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I just rechecked it because its been puzzling me. I also checked my clone light which is series parallel wired and I plugged it in to my kilowatt meter to check.
I misunderstood the way LED gardener worded it. The total current (16.7amp)gets divided by the number of parallel connections and the voltage of the combined strings in series is multiplied by that , so it would be 16.7 / number of parallel connections multiplied by 36v for the 3 strips.
Which is what we were originally thinking until I got it in my head you then had to divide the current again.

So basically the Q strip is max 1amp, don't go less than 17 x 3 parallel - series. Each series acts as constant current, each strip will receive the same.

Sorry again for confusing the issue, I wanted to be sure of what I was saying and turned out I confused myself and then you both in the process
 
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SamWE19

Well-Known Member
coreywebster said:
I just rechecked it because its been puzzling me. I also checked my clone light which is series parallel wired and I plugged it in to my kilowatt meter to check.
I misunderstood the way LED gardener worded it. The total current (16.7amp)gets divided by the number of parallel connections and the voltage of the combined strings in series is multiplied by that , so it would be 16.7 / number of parallel connections multiplied by 36v for the 3 strips.
Which is what we were originally thinking until I got it in my head you then had to divide the current again.

So basically the Q strip is max 1amp, don't go less than 17 x 3 parallel - series. Each series acts as constant current, each strip will receive the same.

Sorry again for confusing the issue, I wanted to be sure of what I was saying and turned out I confused myself and then you both in the process
Click to expand...

So was I right when I said the 16.7a will be tripled whilst the voltage bumped down by a third?
 
coreywebster

coreywebster

Well-Known Member
and my clone light is a hlg60h-48 with 2 19.5v strips wired parallel and 2 wired series to that so each string is 39v
it is 1.3 amps and due to in efficiencies comes in at 53w. If the strips had been 24v it would be just over 60w.

Like you I was just making use of a driver I had going to waste.

and yeah.. 16.7 amps /18 = 0.927777777778 amps per strip. Think of it as 18x36v x 0.92777777778 or 54 x 12 x 0927777777778 it still comes in at 601w

Reason I got confused by LedG was because he only had two parallel strings so the constant current he used is divided by 2 and then the voltage in each string added up to stay within the range his driver could take, been a constant current driver.

But with the 36v driver that doesn't apply and it will put out 16.7 amps regardless. How many watts you get out of it is just determined by how much of that 36v you use if you get me. Like with mine im using only 39v of 48 available
 
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SamWE19

Well-Known Member
coreywebster said:
and my clone light is a hlg60h-48 with 2 19.5v strips wired parallel and 2 wired series to that so each string is 39v
it is 1.3 amps and due to in efficiencies comes in at 53w. If the strips had been 24v it would be just over 60w.

Like you I was just making use of a driver I had going to waste.

and yeah.. 16.7 amps /18 = 0.927777777778 amps per strip. Think of it as 18x36v x 0.92777777778 or 54 x 12 x 0927777777778 it still comes in at 601w

Reason I got confused by LedG was because he only had two parallel strings so the constant current he used is divided by 2 and then the voltage in each string added up to stay within the range his driver could take, been a constant current driver.

But with the 36v driver that doesn't apply and it will put out 16.7 amps regardless. How many watts you get out of it is just determined by how much of that 36v you use if you get me. Like with mine im using only 39v of 48 available
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Ok great cheers.

I’ll aim for 54 strips per driver and try and work out the best configuration tonight
 
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SamWE19

Well-Known Member
coreywebster said:
How many drivers have you got Sam?
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Got 8 spare only gonna use 3 more though for now. To boost my flower room to 5000w and veg room to 1400w

My ppfd is 1500 everywhere in my flower room apart from the edges where the overlap drops off. Going to put these strips around the perimeter of my light fixture to give the edges a boost to even it out for consistent 1500ppfd everywhere
 
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Airwalker16

Airwalker16

Well-Known Member
Can Confirm.
SamWE19 said:
Drivers cost a bomb. I’d rather put in the extra time wiring than wasting these drivers.

I have two options I think. Use f series and let the driver automatically go into constant current mode and get around 400 out of 600w per driver or use the q series.. strangely the q series works out nearly half price due to me needing 100 of them and digikeys bulk discount. Whereas f series I won’t need 100.

Can anyone else confirm it’s possible to wire a 36v driver to take 12v leds by doing 3 parallel strings in series?
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B

boybelue

Well-Known Member
Series adds the voltages and current stays the same, where parallel voltage stays the same and divides the current/amps.
 
Treeckle

Treeckle

Member
Hey I saw this thread and I have a very similar problem. I hope you don't mind me posting it here instead of making my own thread!

Anyways, I want to run 20 Samsung LED strips on one Meanwell driver, and I need help choosing the right one. The strips pull 28-30W when run at 1400-1500mA(which is how I want to run them)

Link: https://www.led-tech.de/en/50cm-Alustripe-with-98x-Samsung-LM301B-LEDs-3500k-and-connectors

If possible, I'd also like to ask about red/blue strips. I'd like to run 8 of those, at 350-600mA, and I am really not sure about the drivers for them.

Link: https://www.led-tech.de/en/50cm-Osram-SSL-Horticulture-Plug-Grow-Stripe
 
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SamWE19

Well-Known Member
Well I just ordered 200 4000k 1 ft q strips and 100 3000k 1ft q strips. Got a good deal on them.

Need to decide what to do about heat sinks for them next
 
GBAUTO

GBAUTO

Well-Known Member
Treeckle said:
Hey I saw this thread and I have a very similar problem. I hope you don't mind me posting it here instead of making my own thread!

Anyways, I want to run 20 Samsung LED strips on one Meanwell driver, and I need help choosing the right one. The strips pull 28-30W when run at 1400-1500mA(which is how I want to run them)

Link: https://www.led-tech.de/en/50cm-Alustripe-with-98x-Samsung-LM301B-LEDs-3500k-and-connectors

If possible, I'd also like to ask about red/blue strips. I'd like to run 8 of those, at 350-600mA, and I am really not sure about the drivers for them.

Link: https://www.led-tech.de/en/50cm-Osram-SSL-Horticulture-Plug-Grow-Stripe
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Ten parallel strings of two strips in series(10p2s) on a HLG600h-42 should be able to provide ~ 1400mA / string @ 40v.
 
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SamWE19

Well-Known Member
1212ham said:
:o OMG, that's a LOT of wiring!
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My main fixture has 380 cobs wired in parallel I don’t mind wiring trimming buds really annoys me though. The bigger the buds I can get mean less trimming per lb so every penny and minute spent on increasing yields is worth it
 
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