Roal Living Energy

Hello,

I live in a solar powered off grid home. My battery bank is 48 VDC. The lighting in my house is a mixture of 48 VDC and 110 VAC (powered through my Xantrex inverter). In my kitchen I have two light fixtures that take as input a direct feed from my batteries: 48 VDC, powering from one to three DC CFL lamps. I have the wiring in place for two additional 48 VDC fixtures, but I have yet to either build or buy the appropriate units. I’d love to have LED fixtures here instead of CFL. So either I need a LED fixture that can take 48 vdc (which ranges from 44 vdc up to 60 vdc during the solar charge cycle) directly, or a driver that takes the nominal 48 vdc as input and outputs 12 vdc to power a more standard 12 vdc LED fixture. Can ROAL help with this?
Thanks!
Peter Clark

I’m really quite mystified. I thought this was a forum having to do with energy efficient lighting. No one has commented and answered my relevant post. How about the people who work for Roal? Where are you? How about getting all the irrelevant crap off this forum and have it just be about lighting?

Peter

Peter,
Sorry for someone not responding to you sooner. This technical forum is new to us and we are still working out some of the bugs.
Regarding your need for a 48VDC input driver, at this time Roal does not have any 48VDC input products. We are starting to work on some 24VDC products for certain markets, but there has not been a large market need for the 48VDC devices. We also do not have a 48V to 12V converter that you referred to.
Please keep checking our site for new products. If a significant market trend develops for the 48V drivers we may consider adding this to our new product roadmap.

Thanks
Bill Koehler

Thanks Bill. I had asked because of seeing this on the web sometime ago: http://www.ledlightforyou.com/Partners/Highlights/en-ROAL-LED-Drivers.php. I also had a communication with George Gallagher (Roal employee) back in April in which he referred to a product called Spectra that he said would have the capabilities illustrated in that weblink.

The product described in that press release does accept a DC input, but it is not an LED driver. This device is what we call a splitter and basically takes the Class 1 DC input and splits it into 4 Class 2 outputs. There is no control of the voltage or current internal to this device. So I didnt mention it because it really is not what you were looking for,

As for Spectra, yes it is a 48VDC input. But this is a multiple output device, primarily intended for color mixing applicaitons. It didnt appear that this was something you were looking for. The datasheet for Spectra is now on the Website if you want to look at the specs.

Let me know if you need anything else.

Bill Koehler