That's a long enough run that you really need to weigh the cost of a
separate system. I'm not seeing the advantages of keeping a single
system for the whole island.
Ray Walters
Remote Solar
303 505-8760
On 1/10/22 9:43 AM, Chris Mason wrote:
I would use a 6,600V single phase outdoor pad mounted transformer pair
and deep bury a single #2 direct burial cable. Easy and quick.
On Mon, Jan 10, 2022 at 7:34 AM Foxfire Energy
<[email protected]> wrote:
Hi Guys, Got a good one for you.. We were tasked to refurbish a
Stand Alone (aka Off Grid) power system on a 100 acre private
resort island off the New England coast a few years back.. The
system has a 12kW(AC)/ 48VDC power center (@120/240VAC) with a
10kW Bergey wind turbine, 3kW of Solar and a 12kW Diesel
Generator.. It currently powers two main lodges and 10 private
cabins.. The system was never installed properly and had
significant damage when we got there (no system ground, evidence
of several lightening strikes, open/corroded connections, and poor
workmanship in general)
The new owners want to build a third lodge at the other end of the
island.. Some 3600ft away, and want to feed full power from the
existing system to the new lodge.. Thing is, the new owner is
pretty brainy (keeps me on my toes).. My first thought was to bump
the 120/240VAC up to 480VAC and send it on like 4/0AL and back
down to 120/240VAC at the new lodge (we've done it before).. The
new owner wants to launder the AC to DC and back for
transmission.. Says DC for transmission is the new Cats Pajamas
because of the efficiency.. News to me.. Anyone have experience
with DC for transmission? Again.. I'm shooting for 15kW (including
25% for continuous duty), 3600ft, 600V wire (but could go with a
different wire) and a line loss under 5%. TIA db
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--
Chris Mason
Solar systems designer
Generac Generators Industrial technician
Comet Systems Ltd DBA Comet Solar
Anguilla Cell 264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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