Winter close up

wellbuiltwellbuilt Solar Expert Posts: 542 ✭✭✭✭
 Hi all 
  It’s time to winterize my cabin for the winter . 
  Last year I would just charge up with my generator  before I left and turned every thing off . 
  I was up there every week or so . 
    This year I’m not getting up there much , chances are I’ll be snowed out soon .
  I have 5 strings of 3 295watt panels , could I just leave one string on with my out back fm80 controller ?
  It says it uses 1 watt when dormant so 700 watts a month plus discharge ? 1000 watts ? 
  2 months 2000 watts if the sun never comes out and the panels stay frozen . 
   I have 1 string of panels that melts off regularly with me helping a little . 
    In the summer months I get 750 watts +- out of a string   winter time 4/500watts max in good sun facing south @ 42o pitch 
   The temps do get into the low 30 every few week and the snow slides off most of the time . 
 Or should I leave all the panel on line  ? Most of it will be snow covered 95% of the time .
   I’ve been leaving one string on about 1/3 of the time when I’m not there , the battery Seam to stay charged better that way . My SG has been good all summer . 
  Absorb 2 hours 59 v summer 59.5 winter float 54 volts .
             What is the best way to go    Thanks for the reply’s in advance John 
Out back  flex power one  with out back 3648 inverter fm80 charge controler  flex net  mate 16 gc215 battery’s 4425 Watts solar .

Comments

  • Dave AngeliniDave Angelini Solar Expert Posts: 5,563 ✭✭✭✭✭
    I would leave all of the solar on and shut down everything else. That is what I do for clients up in the national park high country. There are no guarantees but a bank like yours is not going to break the bank to replace. A vertical array is an option but too much work for the cost of the bank. Try and get up there in the early spring and get charge and EQ in.

     Others do vertical solar but they do not have to pay my labor cost. If they fly me in, it is just to fix a charge source and battery cost is down the list. Make sure everything is surge protected and that the disco's do not disconnect the SPD. Major rookie mistake! Good Luck!
    "we go where power lines don't" Sierra Mountains near Mariposa/Yosemite CA
     http://members.sti.net/offgridsolar/
    E-mail [email protected]

  • 706jim706jim Solar Expert Posts: 381 ✭✭✭✭
    I've left my system connected to the batteries with everything shut off and have no had problems with discharge for many years. I figure the panels are snow covered for about 3 months of the winter before things start to melt off. My first set of 12 GC's went through 18 winters.
    Island cottage solar system with 2400 watts of panels, 1kw facing southeast 1kw facing southwest 400watt ancient Arco's facing south.Trace DR1524 MSW inverter, Outback Flexmax 80 MPPT charge controller 8 Trojan L16's. Insignia 11.5 cubic foot electric fridge. My 27th year.
  • wellbuiltwellbuilt Solar Expert Posts: 542 ✭✭✭✭
    Thank for the reply’s Dave and Jim I’ll see how it go’s this winter . John 
    Out back  flex power one  with out back 3648 inverter fm80 charge controler  flex net  mate 16 gc215 battery’s 4425 Watts solar .
  • ramlouiramloui Solar Expert Posts: 104 ✭✭
    This is my setup: 2 of 6 panels are tiltable. Batteries are 100% when I open the cabin in May.

    Cheers!
    Louis R.
    Off-grid cabin in northern Quebec: 6 x 250 W Conergy panels, FM80, 4 x 6V CR430 in series (24V nominal), Magnum MS4024-PAE
  • wellbuiltwellbuilt Solar Expert Posts: 542 ✭✭✭✭
    Looking good I may try that next year when I have some panels ground mounted 
    Out back  flex power one  with out back 3648 inverter fm80 charge controler  flex net  mate 16 gc215 battery’s 4425 Watts solar .
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