vinthewrench
New Member
- Joined
- Jun 25, 2021
- Messages
- 28
Hi I am new to the forum. first of all i want to say thank you for all the great posts, the imformation is priceless.
I have seen a few questions about well pumps (https://diysolarforum.com/threads/need-240-volt-inverter-recommendation-for-well-pump.22770/)
but i want to re-ask it both with what is available today and a slightly different problem.
I have a 3/4 HP motor that supplies a pressure tank from my home well cistern. Filing the cistern is another 1/2 hp pump. Both are running from utility 220v. I have a backup generator that I can to manually start to run the pressure tank during power failures., but t seems like a total waste to run all the time, since it only needs to build pressure when we are using water.
what I would like to do is put together a charger, inverter, battery setup that can run the pumps during power failures. It not in a location that gets much sun, so I don't really care about solar panels in this application. I will just charge the batteries from either utility or generator. So this is more like a UPS than anything else.
I can easily wire in a relay that prevents both pumps from running at the same time giving priority to the pressure tank pump (3/4 hp). I can probably also use setup a relay to trigger when neither pump is calling to run, thereby allowing the inverter to power down and save battery when it is idle.
So my questions are:
1) I'd like a recommendation for an appropriate inverter that can provide 220v for 3/4 hp plus the surge current for the pump. It would be ideal if the inverter has a shutdown/enable input so I can save idle drain.
2) Should i go with 24v or 48v? and if so what is a good battery charger that I can use to take care of the popular LiFePO4 cells that Will has done a fantastic job describing how to put together?
The rest I can work through, an I promise I will write an article about on the forum describing how it came together.
Many thanks.
Vinnie
I have seen a few questions about well pumps (https://diysolarforum.com/threads/need-240-volt-inverter-recommendation-for-well-pump.22770/)
but i want to re-ask it both with what is available today and a slightly different problem.
I have a 3/4 HP motor that supplies a pressure tank from my home well cistern. Filing the cistern is another 1/2 hp pump. Both are running from utility 220v. I have a backup generator that I can to manually start to run the pressure tank during power failures., but t seems like a total waste to run all the time, since it only needs to build pressure when we are using water.
what I would like to do is put together a charger, inverter, battery setup that can run the pumps during power failures. It not in a location that gets much sun, so I don't really care about solar panels in this application. I will just charge the batteries from either utility or generator. So this is more like a UPS than anything else.
I can easily wire in a relay that prevents both pumps from running at the same time giving priority to the pressure tank pump (3/4 hp). I can probably also use setup a relay to trigger when neither pump is calling to run, thereby allowing the inverter to power down and save battery when it is idle.
So my questions are:
1) I'd like a recommendation for an appropriate inverter that can provide 220v for 3/4 hp plus the surge current for the pump. It would be ideal if the inverter has a shutdown/enable input so I can save idle drain.
2) Should i go with 24v or 48v? and if so what is a good battery charger that I can use to take care of the popular LiFePO4 cells that Will has done a fantastic job describing how to put together?
The rest I can work through, an I promise I will write an article about on the forum describing how it came together.
Many thanks.
Vinnie