Re: [RE-wrenches] Add-On to DGT, string inverter, w/Different Modules on 2nd string

Thank you very much for the feed-back Jerry. I had seen something similar before but wasn’t sure it was the by-pass diodes. Makes sense and gives me something to take to the client along with my recommendations. Ash Bowersock Senior System Designer [RGS Energy] 833 W

Re: [RE-wrenches] Add-On to DGT, string inverter, w/Different Modules on 2nd string

Thanks for the good info Brian. I had tried to explain the single MPPT issue to the client, but probably didn’t use the right words and just made him mad because “the system was designed to accomidate an addition”… ug. Ash Bowersock Senior System Designer [RGS Energy]

[RE-wrenches] Building strings of modules with variable voltages?

In the rough and tumble world of off grid system management for people who have been piecing together systems for years it is not uncommon for our company to come to a project and find many different types of solar modules. In most cases these modules are working fine and producing power but often

Re: [RE-wrenches] Add-On to DGT, string inverter, w/Different Modules on 2nd string

It is very hard to tell what is on site, but as best I can put together the original is 12 SW 175’s on a SB3000 US. And at this point I am not sure how much liability for the original design/system I am willing to take on by trying to tie in with it. Honestly everthing I am hearing is pointing t

Re: [RE-wrenches] Building strings of modules with variable voltages?

Dan; rough-and-tumble world indeed here off the grid! My understanding is that Voc will still be additive, minus degradation over the years, but that the larger Pmax modules will be current limited for Imp by the smaller ones. So your 245w modules could only do 100w in the scenario you give. My so

Re: [RE-wrenches] Building strings of modules with variable voltages?

Ok, does that mean I should dial, oh, two of the ten digits of your number? ;^} > On Jun 22, 2016, at 11:17 PM, Dan Fink wrote: > > Dan; rough-and-tumble world indeed here off the grid! My understanding is > that Voc will still be additive, minus degradation over the years, but that > the l

Re: [RE-wrenches] Building strings of modules with variable voltages?

Sorry, I don't understand the reference. On Jun 22, 2016 11:24 PM, "Allan Sindelar" wrote: > Ok, does that mean I should dial, oh, two of the ten digits of your > number? ;^} > > On Jun 22, 2016, at 11:17 PM, Dan Fink wrote: > > Dan; rough-and-tumble world indeed here off the grid! My understa