The maximum power horses !

[amd711]

thastinger

1. You're positive there is no way to get grid power to that location for under 100K?

that is right.

2. You need to go about this from the other direction. If a smaller pump would do the job, it'll be less expensive to buy the proper size pump than to add PV to run the 20HP...assuming the proper size isn't 19HP anyway.

well, maybe but i need to know what to do next. (suppose it is 10hp)

3. does everything need to come from this one well and pump?

Yes.

your DC pump

It's an AC pump.

run time is going to be limited to the peak sun hours, don't know if that will do the job for you or not but, if not, maybe a couple of smaller pumps running the same time would.

what about batteries?

4. Where are you located and what months of the year would this pump be needed?

- Israel.
- all 12 months.

Thanks

[thastinger]

if it's an AC pump and 20HP then that is going to be a 406V pump, which is 3 phase AC with a neutral. You have just exceeded my level of experience, as stated above, you need to hire a professional design company

[Sunking]

if it's an AC pump and 20HP then that is going to be a 406V pump, which is 3 phase AC with a neutral.

No neutral required, it is 3-phase and and they do not use a neutral.

[paulcheung]

Can a 50KVA generator start this thing? it would be much cheaper to use a generator to run this thing.

[russ]

No neutral required, it is 3-phase and and they do not use a neutral.

My service, heat pump, elevator etc are 4 wire 3 phase

[Sunking]

My service, heat pump, elevator etc are 4 wire 3 phase

Most likely the controls use L-N voltage, but the 3-phase motors do not. I assume you have something like 208/120 wye service. L-N is the 120 volts and line to line is 208. You would have to have a wye service to get your 120 volts or whatever standard line voltage you use for receptacles.

[amd711]

I found this.

http://www.youtube.com/watch?v=b_jCyGivFmk&feature=youtu.be

[inetdog]

I found this.

http://www.youtube.com/watch?v=b_jCy...ature=youtu.be

As I do not speak or read Arabic, I can't help you at all on understanding that system.

[bcroe]

i have a well with a 20hp pump already fixed on it. So, regardless of
the head, flow or expenses. i need to run this pump using solar power.

I am trying to understand how a 20 hp pump got installed, when there was no way to power
it? Maybe there is a diesel generator there?

The problem with AC motors, is they tend to need steady full power to run. Solar is anything
but steady & predictable over the day and year. Trying to store up power in batteries to level
the power on this scale would require boxcar loads of batteries, along with all sorts of operating
complications. In the end you need the diesel anyway to preserve the batteries. And the
complexity will hurt the efficiency.

DC pumps are available with controls to make use of whatever power a solar system can deliver
at that moment. A big tank can store water overnight or even days when solar output is weak.

There are AC motors and controls designed for variable speed. See the latest generation of
rail locomotives. Solar may eventually have such equipment, perhaps not today. I doubt it
will use your current stock AC 20 hp pump. Bruce Roe

[stubbyboy]

55 kw water pump off grid

i currently run a 60 hp water pump producing 500+gpm water @ 350 ft deep using solar dc no inverter or mppt works great so far

[russ]

i currently run a 60 hp water pump producing 500+gpm water @ 350 ft deep using solar dc no inverter or mppt works great so far

What pump?

[Sunking]

i currently run a 60 hp water pump producing 500+gpm water @ 350 ft deep using solar dc no inverter or mppt works great so far

Prove it.

[stubbyboy]

vertical turbine pump shaft drive using permanent magnet motor

[Sunking]

vertical turbine pump shaft drive using permanent magnet motor

Blah Blah Blah. Show pictures and documentation.

[stubbyboy]

Blah Blah Blah. Show pictures and documentation.

so your saying it cant be done ?