CCT LED high load dimmer/power supply

Hardware
1

Hey guys,
I am setting up a new light concept for my flat. My flat is very very dark, with windows only covered by balconies and on the lowest floor. I want some suitable lightning, especially during long winter days.
That’s why I planned CCT LED-Strips dimmable with warm (2400K) and cold (6000K). I plan to have 3 zones / rooms (bed, living, kitchen).

I requested reports of CCT LED Strip with CRI 90+ at alibaba and got the following setting:
Total: 2722 lm/m, ~18 W/m
Warm white: 1200 lm/m, ~ 9 W/m
Cold White: 1500lm/m, ~ 9 W/m.
Any tips for purchases on alibaba (like certificates or some special questions I could ask or things I could look for) are highly welcomed. It’s my first time.

The stripe will be mounted facing along the cieling (left and right) in one aluminium bar.

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Each bar (2 stripes, one left, one right) will be placed in 2m distance. That leads to a flux of approx 1000 lux. I hope to receive a good light and glare-free distribution. Comments highly appreciated!!

Now as mounting and stripes are settled I am looking for a matching driver that I can also include into Home Assistant!

Each zone would be like 25 square meters “2,5” bars with 2 stripes each, summing up to 25 meters of stripes, each of approx 5 m length. This are 450 W per zone or 90W per 5m one sided bar.

The shelly RGBW does a good job but only allows 90W per channel. Approx 10m and no buffer left over.
I know that I need to supply power approx every 5 m (at the end of each bar), but according to the power consumption I would need also 3 Shellys per zone, 9 shellys in total. It is not so much for the numbers of shellys but more about the missing buffer (they have no temperatur sensor!).
And doubling it, seems a bit overload? What do you think? What options do I have?

I would really enjoy some feedback on my plans and a hint for the LED driver/controller.
I am honest, that I am “deep in the topic by research” but have literally no experience.
That’s why I am searching for help as I am gooing to spend already 400€ on LEDs an bars only.
Making it a waste would be really pitty.

2

Okay, I have thought about one solution but it has several draw backs:
There is the Meanwell HLG-240H-24-AB.
It gives the option of beeing dimmable and it would give the needed power for each zone.
Probably I will have to use 2, one for each “channel”

It is dimmable by 1-10V supply, additive resistance or PWM signal. No I am looking for a HA compatible way to build the signals like maybe an ESP32?

Drawback:

  1. No signal or no resistance correspond to 0 output. The fail mode must supply a 10V output for a 100% output of the source. I do not like this :expressionless:
  2. 6% minimum dimming (60lux). With 3 shellys I would have the option to turn off or the other stripe during night and go below 60 lux.

puhhh. that doesn’t sound so optimal tbh.

3

I recently did something similar for a walk-in closet using a pair of 5m Auxmer 24v CRI95+ CCT strips rated at up to 38.4w/m (which is based on both channels driving 100%, which I don’t believe will ever happen). I used 2x Gledopto GL-C-008P controller (5A/channel max) and 2x Mean Well LRS-150-24 power supplies. These get really bright and provide substantial illumination despite the light being entirely indirect, positioned in aluminum channels under the top shelves and facing the (dark wood) wardrobe and dark green walls.

I have no experience with the Shelly controller, but typically the power supply connects to the controller, which then connects to the strip. If you need power injection, that should be done using the same power supply, with sufficiently thick cables. Using a second power supply on the same strips could be a fire hazard as you’d have different grounds.

You may want to start with just a couple of 5m strips per zone and see if that’s enough. The power supply you linked is overkill for 10m of “18w/m” strip–nearly every manufacturer overstates the power draw, and while I have not measured my setup, I’d be very surprised if it’s pulling anything close to the max rating of my power supplies.

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