LED MODULE F TYPE Led Strips Series: LT-VB24F / 15632 lm per Strip

[john073]

View attachment 4175403

Damn nice, yeah im doing something like that, just using normal pc heatsink and fan should work fine as well.

 

[ANC]

That is what those are, that was less than half of the room.... All the fans were running of a PC PSU.
It is a laser cut and bent frame with 3 CPU coolers and a driver on top 3 COBs on bottom.

Those PC fans are very good at transferring the heat to the air, so your air conditioning and insulation game need to be on point for summer.

 

[john073]

That is what those are, that was less than half of the room.... All the fans were running of a PC PSU.
It is a laser cut and bent frame with 3 CPU coolers and a driver on top 3 COBs on bottom.

Those PC fans are very good at transferring the heat to the air, so your air conditioning and insulation game need to be on point for summer.

is that your setup?

 

[Randomblame]

So i must run them at 48 volts the strips are rated at 48.8v , or is it best to run them lets say at 45v like im doing now at veg stage and 48 or 47.5 at flower stage?

Thanks

Do these CV drivers only have a voltage poti? If yes, it's okay to dimm the strips via voltage, 45v should anyway the lowest settings, or not? +/- 3v or 45-51v?
There is a correlation between Vf(voltage) and If(current), if you lower the voltage you lower also the current each strip will get. To get the numbers from the datasheet it needs at least 48,8v(@65°C) and if you want to run them harder they need up to 50 or even 51v to reach max. current. The higher the voltage the higher the current flowing thru the strips. You need to look at the datasheet for max. current and set voltage accordingly.
But it's also depending on the case temps. If you mount them on alu c-channels the temps stay a lot lower. The 48,8v are at 65°C, if they run with lets say @50°C voltage would increase by ~0,5v to 49,3v.
Cooler case temps make LED more efficient and allows a higher voltage at the same current. This make water cooling the most efficient way to drive LED's and if you reuse the heat its unbeatable. Can you upload the datasheet here?

 

[john073]

Do these CV drivers only have a voltage poti? If yes, it's okay to dimm the strips via voltage, 45v should anyway the lowest settings, or not? +/- 3v or 45-51v?
There is a correlation between Vf(voltage) and If(current), if you lower the voltage you lower also the current each strip will get. To get the numbers from the datasheet it needs at least 48,8v(@65°C) and if you want to run them harder they need up to 50 or even 51v to reach max. current. The higher the voltage the higher the current flowing thru the strips. You need to look at the datasheet for max. current and set voltage accordingly.
But it's also depending on the case temps. If you mount them on alu c-channels the temps stay a lot lower. The 48,8v are at 65°C, if they run with lets say @50°C voltage would increase by ~0,5v to 49,3v.
Cooler case temps make LED more efficient and allows a higher voltage at the same current. This make water cooling the most efficient way to drive LED's and if you reuse the heat its unbeatable. Can you upload the datasheet here?

Im have them on 40mm wide 5mm thick aluminium flat bar i could get that wide u channel my side, thinking of putting some of the small u channel on the back of the flat bar like 30mm pcs 15 of them on each 1.25m sectic for extra heat conduction.

I have 2 of the 3000k strips and 1 of the 4000k strips currently running at 45v the aluminium is not really hot a litlle warm at the back of it front around the strip its cool.

 

[Airwalker16]

So i must run them at 48 volts the strips are rated at 48.8v , or is it best to run them lets say at 45v like im doing now at veg stage and 48 or 47.5 at flower stage?

Thanks

Run as close to 48.8 as possible and use the OTHER potentiometer to DIM the lights.

 

[ANC]

is that your setup?

The previous setup, running gen 3 type F now.

 

[ANC]

For the SA guys tha want to build with 40mm strips, I can give you the Buildit part no. and they can order you the same alu channel from SALBEV.
It is very light weight. If you buy the 8-foot length, there is enough for 2 strips for R200.

 

[john073]

For the SA guys tha want to build with 40mm strips, I can give you the Buildit part no. and they can order you the same alu channel from SALBEV.
It is very light weight. If you buy the 8-foot length, there is enough for 2 strips for R200.

Thanks would apreciate the part no, i dont have a build it here at my side just a builders

 

[john073]

Run as close to 48.8 as possible and use the OTHER potentiometer to DIM the lights.

What potentiometer should i use do you have an example possibly? Can i get it from builders

 

[ANC]

I think they all get their aluminium from the same places... Maybe you could phone SALBEV directly...
SALBEV sticker says STEL 2.4 -74x20mmx2.5mm Light duty Bar code 6009600417359
Builders part no 123476 Bar code 2400001234769

There you can see it, I used a plastic conduit ducting for the wires. Split was done with simple crimped female bullet connectors with some heat shrink on.

 

[john073]

I think they all get their aluminium from the same places... Maybe you could phone SALBEV directly...
SALBEV sticker says STEL 2.4 -74x20mmx2.5mm Light duty Bar code 6009600417359
Builders part no 123476 Bar code 2400001234769

Thanks, what do you use to dimm your lights?

 

[ANC]

Trimpots on the drivers.... I run my strips in parallel. at 45.9V.

 

[john073]

View attachment 4175418 View attachment 4175419 Trimpots on the drivers.... I run my strips in parallel. at 45.9V.

Ok thanks, im currently at 45 so i can push it up a bit then thinking of 46 maybe or more but i will try and make the heat a bit better on the aluminium

 

[Randomblame]

Im have them on 40mm wide 5mm thick aluminium flat bar i could get that wide u channel my side, thinking of putting some of the small u channel on the back of the flat bar like 30mm pcs 15 of them on each 1.25m sectic for extra heat conduction.

I have 2 of the 3000k strips and 1 of the 4000k strips currently running at 45v the aluminium is not really hot a litlle warm at the back of it front around the strip its cool.

From what I see on the datasheets the drivers min./max. voltage match almost perfect with the strips min./max. values. Means you can use the build-in voltage poti for dimming. Even if you set max. voltage the strips run below their limits.
It's anyway the only way to dimm the lights with these CV driver so its perfectly fine.

You could use a cheap 10$ wall watt meter like a kill-a-watt to get an idea of how much power is used, Walmart should have them or am4zon/e3ay. At 45v it's probably ¼ - ⅓ of the nominal output.

 

[john073]

From what I see on the datasheets the drivers min./max. voltage match almost perfect with the strips min./max. values. Means you can use the build-in voltage poti for dimming. Even if you set max. voltage the strips run below their limits.
It's anyway the only way to dimm the lights with these CV driver so its perfectly fine.

You could use a cheap 10$ wall watt meter like a kill-a-watt to get an idea of how much power is used, Walmart should have them or am4zon/e3ay. At 45v it's probably ¼ - ⅓ of the nominal output.

Thank you for the info i will try to get a watt meter from ebay we dont have wallmart this side, south africa here we have import everything lol, yeah the strips can do 48.8v and 3A and the power supply can do 48 but up to 52 i think and 7.3A something like that

 

[Randomblame]

Yea, that's a max. of 2,43Amps per strip so well within their specs. Meanwells all like to have a bit much juice so maybe 2,5A at 50v or 125w per strip or 375w total if you ramp it up at max..

 

[john073]

Yea, that's a max. of 2,43Amps per strip so well within their specs. Meanwells all like to have a bit much juice so maybe 2,5A at 50v or 125w per strip or 375w total if you ramp it up at max..

Someone told met i must not run my meanwells so hard i must only run it at like 60% so basicly 2 strips per 350w meanwell?

 

[ANC]

Naah, if possible you want to drive them 100% You do want to look at thermal specifications and allow heat to get away from it.. I.e. not screw it to a wooden board or something... There are some details in the datasheet and application notes for most drivers.

 

[john073]

Naah, if possible you want to drive them 100% You do want to look at thermal specifications and allow heat to get away from it.. I.e. not screw it to a wooden board or something... There are some details in the datasheet and application notes for most drivers.

My power supply is currently in a seperate space then my lights, and lying on a plastic surfice but not getting hot at all