V series "Tetras"

This is how I am reading it as 400

stardustsailor said:

Haven't actually measured with a lux meter ,but to my eyes the difference in brightness ,
between a VERO 29 and a CXA3070 Z4 bin @ 2200 mA ,is quite noticeable.Maybe more than that .
The Vero 29 really seems to be outputting much more light ...And ,trust me ,it's not just me saying that ,is plenty of people
,close friends and relatives ,suggesting same,when witnessing the comparison ...

Click to expand...

Here are some lux/W measurements I just did, pulsed at 25C, distance from COB to luxmeter ~12". I measure power dissipation directly with a pair of multimeters and that is taken into account in the lux/W figures.

Generic 100W COB warm white: 2.557A -> 90.5W -> 329lux/W (sickly yellow/green color temp, but it is warm white technically)
Vero29 3000K #1: 2.556A -> 101.5W -> 429lux/W
Vero29 3000K #2: 2.54A -> 101.5W -> 423lux/W
CXA3070 3K AB #1: 2.165A -> 86.75W -> 455lux/W
CCA3070 3K AB #2: 2.21A -> 88.5W -> 433lux/W
CXA3070 3K AB #3: 1.996A -> 80.16W -> 469lux/W (This is the most efficienct CXA I have come across, but has a higher Vf than any other CXA also, just an outlier for reference)

Although the CXA has more lux/W, the Vero may actually have just as much power output/W because more of its output is in the red/deep red range. The CXA consistently has a higher Vf so the driver reduced the output unfortunately. But I can dig out a 2.4A driver that can go up to 45Vf if this data is unsatisfactory.

Thats some really good info supra. Amazing how much better the veros and crees did.

How do the cxa z4 and z2 do compared to those tested?

Would help me decide what to do with my z2's..

...to make pleasant the timeout...

...or maybe a litle smile with "placement pad operation"...


...are expensives to my pov... but i like it a lot....




...other expensive to my pov... ...but i like it too...


...i saw one price for The Winsta Wago Distribution box style GN info...

...WAGO Winsta 770-681/104-000...

http://www.onlineelec.com/parts/products/16266-770-681104-000.aspx

Pd... ..."daisy chain" basically are a "T" wago winsta piece... ...and the wire(s) with right connectors...

pd1... ...upss recom and wago info only for examples or ideas....



saludos

And the heat sink -COB placement design of the new V series model .

And some spec( calculated for : Ta = 25°C / Tc = 45°C Io = 1500mA ):

***
Rθ heatsink_ambient= ~0.14 °C/W
( ST20 heat sink + Phanteks PH-F140XP fan colling system ,see below .)
Rθ case_heat sink =RθTIM = 0,0001/ ( 8.7*0,032^2 )=0,01122 °C/W
Rθ junction_case value ( 0.13 °C/W ) taken from Vero 29 Spec Sheet,page 9 (pdf).
(Fan used -Phanteks PH-F140XP- has 85.19 CFM max.
Fan lid -over the heat sink,fin side - opening has 129 mm Diameter .)

Click to expand...

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And a quick update from inside the tent .Still vegging under 2x VERO 29 3K,80Ra @ 1300mA (<=from yesterday-was 1150 mA)
There;s definately something going wrong with one of the three ..
But I can't figure out what exactly ...
(seeds used at this grow were ....~8 years old .... ..Might be the reason ?)








Cheers.

While it seems that the rest of the world around is on fire,all I can think of is cooling ..
Pretty cool ...
Well,due to lots of "technical problems" the new design evolves kinda slow ...
Anyway ..
It's going to be a great light ...
As for cooling ...



( The heatsink used ,along with the 2.4 Watts fan and Gelid GC Extreme* used as TIM it has
a thermal resistance value - ambient to case - of ~ 0.15 °C/W .Meaning that all four Vero 29 arrays @1500mA ,with ambient temperature of 25 °C will have a Tj = ~ 48.2 °C .At 1 meter distance directly underneath the fixture the flux will be around 430 umol/sec.At half the distance from the fixture ,directly underaneath the figure goes four times higher ..That is 1720 umol/sec.
Overall ....More than enough light for a space of 3'x3' and plants kept 3'-4' high ...
Expecting plants / bud sites directly underneath the light to yield higher from plants/bud sites placed on the perimeter..."Single point source "....Without optics ...
)


* http://www.tomshardware.com/reviews/thermal-paste-performance-benchmark,3616-18.html

Very nice polish job! I recently polished a 12"x12" heat sink for my mother light and can appreciate the amount of elbow grease needed to get it close to mirror finish.

Wish my designs looked this good. My fabrication skills are rather weak

Rivets, rivets, and rivets.

(StarDust turned me onto rivets )

I've been using M3 screws for everything... I think rivets or a tig welder might be a better solution.

And a quick update from the "old" V series light ,operating inside a 3'x3' tent ...

There are those low temps issues,still going on ...



From the initial three white russians ,only one female left.(Transplanted to larger pot )
The others ,one was a staminate (male ) plant and the other was ....something odd ,anyways ...


The two Vero 29 operate now at 1850 mA .
The rest of plants are from various seeds ,saved out from various weeds I;ve tested and liked.
The white russian female is towards the end of first week at 12/12.She was vegged for about 35 days ,
under low temps conditions ( 10-14 C lights off - 18-22 C lights on )...
The rest are vegging from start at 12/12 .(Actually ,the oldest of them , are just few days old ).



As soon the new model - the Tetras one - is complete ,it will replace the old one ,inside the tent ..


Cheers.

And some more details of the current Tetra V project ...


Preparing the venting on the top lid ...Boring ..Time consuming ...
Using a thick perforated steel sheet piece as a "stencil" for drilling ,makes things nicer and the job done faster ..



Still needs a lot of work ...


Some other parts ...
(the front panel ,the heatsink lid with fully anti-vibration fan mounting and the hanging posts ..)



The new " output power" select rotary switch is a double pole -six position rotary switch.
Each pole will handle two drivers.
So each pole outputs two sets of wires .



The resistor configuration for each pole is this :
100K /2 drivers = 50 K max (100% of output power )
50K/ 6 positions = 8.333K .
Nearest standard resistor value is 8.2 K .

So position #1 = 8K2 => 16,4% of 1530 mA
#2= 2x 8K2= 16K4 => 32.8% of 1530 mA
#3= 3x 8K2 = 24K6 => 49.2% of 1530 mA
#4 = 4x8K2= 32K8 => 65.6% of 1530 mA
#5= 5x8K2=41K => 82% of 1530 mA
#6 =open /not connected => 100% of 1530 mA


( 4x Meanwell HLP-60H-42 . Io max per driver = 1530mA @ 220-240 VAC input )


Cheers.

You are just too good dude. Carry on.

The lower outer case lid at work ...
Some extra ventilation holes are a new feature (amongst others) in this model.
For better hot air exaustion, from the part of the heatsink that remains inside the case ( ~ 10 mm of the 30 mm fin height ).



The top outer lid is almost ready ...


I think that I might be having this small-tiny-faint obsession with -shiny-details..


The inner lid-base,along with the two heatsink support bars and the eight custom -hand made of course - driver
securing posts.


Due to limited space,the four Meanwell HLP-60H-42 drivers are not going to be placed horizontally flat ,
but sideways - on their long side - straight up -( PCI card style ) .
So ,these eight little fuc..ers....ehhh ...securing posts I meant ,had to be made...


( Some might 've understood by now,
that silver color has become almost a " trade mark " of the V series LED grow lights )

Cheers.

.

beautiful work SDS...
the COB placement it's perfect, not only for dissipation, but the "particular" position and distance between the light cones,
allows exceptional values in lux and par flux, projected and concentrated, in a defined area...
I think you have already see with instruments...
this is what I use in 4COB model:

Well...
This flu is driving me crazy ...
I can't spend much time in the project..
(Other obligations too ,you see..The usual .. )

So ..
Bottom part-of case- is finished ...And front panel installed..





Those two stainless steel handles ,are used as "standing feet" for the unit ,when storing or servicing *.
Also they serve as protection -for the cobs and heatsink -,in the awful case of the unit impacting the floor!
And lastly they are pretty ..hm ...handy ...as handles ,for adjusting the distance of the unit from the canopy.

**Servicing: I strongly advice towards the frequent inspection and cleaning of a HSF (heat sink -fan ) active cooling system.At average ,every couple of grows or 5000 hours.But depending from heatsink's fin distance
and how dusty is the environment ,the system might need to be cleaned more or less frequently.
So ,better always to remember to frequently inspect the condition of the fins and the fan.
Fan blades which have gathered dust and debris ,get heavier and maybe not in a "weighted " way.
That can cause decrease of fan performance and/or abnormal operation of the fan,which if gets not"fixed" can lead to premature fan fail.
Dusty fins ,full of debris do not convect heat the same way as if clean.Dust forms a covering layer to fin surface,acting as heat insulant.Also air stream slows down in speed ,due to friction of air ,with the "gritty" surface of dusty fins .Frequently servicing (cleaning ) the HSF colling system ,will ensure it's proper operation ,long service life and high cooling efficiency.

Click to expand...

----------------------------------------------------------------------------------------


The four Vero 29 are installed to the heat sink ...



For achieving maximum contact pressure (thus maximum possible contact surface ) between the heat sink and the Vero 29 heat slug (bottom surface of substrate ) ,thus achieving highest possible heat conduction ,all four M3 screw are used.

Each screw has a set of two flat washers,with one being wider than the other .
This ensures that the force applied by the allen screw will not deform/crack the plastic case of
the Vero 29 ,while still allowing that downward force to be rather great *.

* Tighen at ~ 2 N*m( = 2000 N*mm ) ,which translates to a clamping load of ~333 kg ( ~ 734 lbs ) per M3 screw.
All together about 1332 kg (= ~ 2936.5 lbs ) of clamping load per Vero 29 array .

Click to expand...

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2 N*m= 200 N*cm is 4.44x more torque than Bridgelux suggests for Vero 29,without washers,which is a torque of 45 N*cm= 75 kg clamping load /per M3 screw,300 kg total.
A double washer set allows for much more torque,of course .


Additional info:
http://www.spaenaur.com/pdf/sectionD/D48.pdf
http://www.rpmmech.com/pdf/tightening_torque.pdf
https://www.kimballmidwest.com/Catalog/MarketingText/Torque and Tightening.pdf
http://www.engineersedge.com/calculators/torque_calc.htm

Click to expand...

I prefer these kind of allen nuts and low profile not flat head screws(contrary to what bridgelux suggests here . ..) ,because those cylindric allen heads ,serve as extra protection for the arrays ,too ..



Cheers.

@stardustsailor

I've noticed in your past threads that you like to use a EMI filter AC sockets to power your fixtures. Could you tell me from your experience why you use one over the other? I believe the LightHouse Hydro BlackStar to use just a basic IEC AC socket.

Probably to protect from EMI.

AquariusPanta said:

@stardustsailor

I've noticed in your past threads that you like to use a EMI filter AC sockets to power your fixtures. Could you tell me from your experience why you use one over the other?

Click to expand...

churchhaze said:

Probably to protect from EMI.

Click to expand...

Correct .Both ways .Incoming & outgoing .
( Additional to the the built-in EMI filters of the drivers and fan psu.)

churchhaze said:

Probably to protect from EMI.

Click to expand...

Yeah, a silly question of me right? I suppose I should have been a little more specific with the question.

Watch The Lion King much?



@stardustsailor

While I know a little about EMI from wikipedia and other sources, I don't even know if it exists at the level of operation that we, growers, work at. Well it probably does but without concern.

Is it noise? Is it something that affects the longevity of the of circuitry that exists between the COB all the way through the driver? Have you seen EMI show itself as an issue with past COB related projects?

I'm not an electrical engineer yet (although may never happen to be one; we'll see in the coming months as the semester pans out) so my understanding of these things is negligible.