Jakes Posted February 10, 2014 Share Posted February 10, 2014 Hi guys A friend offered me solar borehole pump. It's a lot more than what I will need, but it can make sense to use it. It comes with an MPPT-controller box and the motor/pump combination. There's no solar panels with the pump. The inscription on the pump says: 220V (underscored, for DC) and 3kW. I will not need an output of more than 1kW. Is it possible to use less generating capacity from the solar panels than what the ability of the pump is? I was thinking along the lines of using 5 x 240W/48V panels, connected in series. Can that be done? Thanks again. Quote Link to comment Share on other sites More sharing options...
Wetkit Posted February 11, 2014 Share Posted February 11, 2014 Hi Jakes, Man, you lucky to have a friend like that. Of pumps I know nothing, so the best would be to take some photo's of it and send it to somebody that deals with that specific pump on a daily basis, like the supplier. How deep the well is, how far you looking to pump the water and the size of the pump makes a big diffrence to the power required. The biggest problem with pumps is always the start-up current. With your set-up you only going to get 5Amps, but if that would be enough to get the pump going, i'm not sure. Good luck! Quote Link to comment Share on other sites More sharing options...
Jakes Posted February 11, 2014 Author Share Posted February 11, 2014 Hi W I'm using a gps to measure height above sea level. Really don't know how accurate it is, but here goes. The borehole is 255m above sea level. The tank will probably be at 310m. The borehole is 60m deep. I'd like the pump to be about 40m below ground level. The water level seems to stabilize at about 10m below ground level if I pump 1200l/m, which is more than enough for our needs. Reading about the pumps coming from the east, some of them seem to be able to lift the water to a height of 140m, using an 850W/48V motor. The power is supplied by panels of 1000W. Any ideas if I will be able to make this one work? Quote Link to comment Share on other sites More sharing options...
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