What do you think is cheaper?

If I were to become a solar farmer what inverter voltage do you think is cheaper to work with?
480 volt 3 phase?
Or 3 phase 240v?
I'm thinking 3 phase 480v.
Since I can't find many 3 phase 240v units.
480 volt 3 phase?
Or 3 phase 240v?
I'm thinking 3 phase 480v.
Since I can't find many 3 phase 240v units.
Solar hybrid gasoline generator, 7kw gas, 180 watts of solar, Morningstar 15 amp MPPT, group 31 AGM, 900 watt kisae inverter.
Solar roof top GMC suburban, a normal 3/4 ton suburban with 180 watts of panels on the roof and 10 amp genasun MPPT, 2000w samlex pure sine wave inverter, 12v gast and ARB air compressors.
Comments
i don't like to be so blunt but unless very very qualified stay away from thoughts of this!
Also, the utility (their engineers) has to ensure they have capacity for your solar (and whatever your home/business loads).
Worst case, they may have not the infrastructure to carry those power levels and may refuse, or charge you, for the upgrade(s).
For example, many office parks in Northern California are wired for 120/208 "Wye" connections. When you get into 480 VAC--Are your only "loads" your solar generation? Do you have other local power needs (running home/business/etc.)?
And look at the various rate plans... For solar and normal loads. Commercial in California--It is complicated, and in the next few years you may see your solar rate plan(s) change--For residential, the utility only guaranteed a 10 year "grandfather" period. After that, who knows.
It is all dependent on your local utility and state politics (State Public Utility Commision). Some states have already effectively "shut down" new solar (Hawaii by prohibition, Nevada by "non-friendly" GT Solar Rate plans, and various local utility co-ops that have never allowed GT Solar across the country--As I recall...).
-Bill
hey don't blame me for that name the workers themselves named the company that....lol
david
-Bill
I believe they are wired for 480/277Y.
Wire thieves took the wire from the transformers to the dirt before I moved there.
This is in new mexico.
No one on the coop has an install like this so it would be done very closely with the electrical coop.
I may use the 480v service to power a small submersible well pump. Only talking like 1 to 3 hp.
Maybe an air compressor.
I'm working on 480v 3 phase motors and inverter drives almost every day at work. I'm used to it.
Solar hybrid gasoline generator, 7kw gas, 180 watts of solar, Morningstar 15 amp MPPT, group 31 AGM, 900 watt kisae inverter.
Solar roof top GMC suburban, a normal 3/4 ton suburban with 180 watts of panels on the roof and 10 amp genasun MPPT, 2000w samlex pure sine wave inverter, 12v gast and ARB air compressors.
Most Ag wells over 25 horsepower are 480/277, if you allready have that keep it, don't know about utilities in New Mexico but Ag uses are grandfathered here in California , I do commercial electrical and I do have 240/480 transformers on hand used both three phase and single phase. Let me know, maybe we can do a deal or I might find one for you. Talking about grandfathered......I service several dozens 480 volt floating installations, three wire, no neutral.......you cannot get that today but if it's grandfathered......I also have at least 2 or 3 240 volt floating three phase services and one corner grounded 240 volt delta three phase, no neutral, B phase grounded! I was shocked to find it! That has not been allowed since the '30's or '40's but they are grandfathered in, I can't even buy control boxes or change out services as I will have to upgrade entire service, these are very old farm installations. To repair some I have bought new Equiptment and gutted it to install the components into the original boxes. That is a repair, not an upgrade and I need no permit to do that......more of a technical troubleshooter than an electrician. Santa Cruz county is a bedroom community and there are many residential electricians here, only a few commercial electricians. But many farms, Watsonville is the strawberry capital of the world and Salinas is America's salad bowl...I'm in the middle of this so I pretty much do commercial shops and agriculture now. Homeowners first question is how much? The farmers "can you get here now?" I have never researched solar farming as it appears to be really big bucks that will get such installations approved .
david
NOTE: my spelling is much better than Apples autobutchermyspelling .......hey I even taught my iPad to auto spell that! LOL! Too bad it autobutcherspells common words
Probably delta with no neutral.
I like the setup I have. It's 3 transformers and I can see each line on each transformer for your hot and the opposite post on each transformer is tied together forming the neutral for each phase.
I probably won't make much money getting paid 3 cents a kwh and likely no taco breaks or credits.
Solar hybrid gasoline generator, 7kw gas, 180 watts of solar, Morningstar 15 amp MPPT, group 31 AGM, 900 watt kisae inverter.
Solar roof top GMC suburban, a normal 3/4 ton suburban with 180 watts of panels on the roof and 10 amp genasun MPPT, 2000w samlex pure sine wave inverter, 12v gast and ARB air compressors.
Floating delta has no neutral.....loads are phase to phase only, there is no 120 volts. Have you ever seen corner grounded delta......AKA Grounded B phase....no neutral .....phase to phase 240 volts .....A phase to ground 240 volts .....B phase grounded 0 volts...C phase to ground 240 volts. No 120 volts, balanced loading only....very rare indeed, I found it on a farm feeding a 15 horsepower turbine pump. It took me a while to figure out what I had. It was not documented anywhere.....Only a few senior t-men even knew what I was dealing with....Schneider had never heard of it and was unwilling to supply Equiptment for this installation. I bought a new 240 volt Schneider Square D well pump controller and hacked it for this pump. It worked fine but distributor would not sell me the Equiptment to use on that job. I told them this one was for a different job. PG&E 's workers looked the other way. I had a faux artist paint the new Equiptment old to fool the supervisors......they did not notice the "painted rust".......LOL...painted dents and all...I got to did out my photos of this one......sometimes that is the only way to get things done here in the land of over regulation. Government regulators need to be treated like mushrooms...feed them $hit and keep them in the dark....
david