PV to 120VAC non grid-tie inverter

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Mike Curran
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My RE system: Outback - Garage roof:
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- 6 (2×3) ALEO S79-300's into one FM80 (2017)
- 2 grid-tied GVFX3524's classic stacked for 120/240VAC (2007)
- 12 Surrette/Rolls 2V x 1766Ah (2007)
- Hub10.3, Mate3s, FNDC, RTS, OpticsRE. Tigo Energy ES maximizers on each PV module.

Westinghouse Solar - Barn roof: (2012)
- 30 (2x15) 235W panels with Enphase M215 microinverters, grid-tied

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- 14 Talesun 275W in series (DC array input to SB charger)
- 3 SimpliPhi 3.8 batteries, 48V, 225Ah total
- AC coupled input (manual switch during grid outage only) from 14 Talesun 275W,
Enphase M215 microinverters, normally direct grid tied

All self-designed and self-installed
Location: Chagrin Falls, Ohio

PV to 120VAC non grid-tie inverter

Post by Mike Curran » Tue Jul 07, 2020 1:44 pm

Hello all - This isn't an Outback-related question so excuse my posting it here, but...

I am looking to connect 2 spare PV modules directly to a non-grid-tie (approx 500W) inverter to power a remote pond aeration pump, without any battery requirement. I know, this means the pump won't run at night or when there's no sun but I think my pond would still benefit from it. If the modules are in series I could get 75VDC, parallel half that, as input to the inverter.

At some point in the past I was able to find one of these on line but it has escaped me. Anybody out there know of such an animal? Thanks!
http://www.tigoenergy.com/site.php?95b2dca2-ca6c
https://enlighten.enphaseenergy.com/public/systems/Hctc107221

raysun
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Re: PV to 120VAC non grid-tie inverter

Post by raysun » Tue Jul 07, 2020 1:54 pm

Mike Curran wrote:
Tue Jul 07, 2020 1:44 pm
Hello all - This isn't an Outback-related question so excuse my posting it here, but...

I am looking to connect 2 spare PV modules directly to a non-grid-tie (approx 500W) inverter to power a remote pond aeration pump, without any battery requirement. I know, this means the pump won't run at night or when there's no sun but I think my pond would still benefit from it. If the modules are in series I could get 75VDC, parallel half that, as input to the inverter.

At some point in the past I was able to find one of these on line but it has escaped me. Anybody out there know of such an animal? Thanks!
Hey Mike,

Is the pump already in place, and is a 120VAC unit?

If not, how about a 24VDC pump directly powered from PV.

Mike Curran
Forum Emperor
Posts: 1788
Joined: Sat Aug 28, 2004 6:28 pm
My RE system: Outback - Garage roof:
- 8 (2x4) Evergreen 180's into one FM80 (2007/2020 - replaced MX60)
- 6 (2×3) ALEO S79-300's into one FM80 (2017)
- 2 grid-tied GVFX3524's classic stacked for 120/240VAC (2007)
- 12 Surrette/Rolls 2V x 1766Ah (2007)
- Hub10.3, Mate3s, FNDC, RTS, OpticsRE. Tigo Energy ES maximizers on each PV module.

Westinghouse Solar - Barn roof: (2012)
- 30 (2x15) 235W panels with Enphase M215 microinverters, grid-tied

Outback Skybox - Barn roof: (2019)
- 14 Talesun 275W in series (DC array input to SB charger)
- 3 SimpliPhi 3.8 batteries, 48V, 225Ah total
- AC coupled input (manual switch during grid outage only) from 14 Talesun 275W,
Enphase M215 microinverters, normally direct grid tied

All self-designed and self-installed
Location: Chagrin Falls, Ohio

Re: PV to 120VAC non grid-tie inverter

Post by Mike Curran » Tue Jul 07, 2020 2:22 pm

Hi Ray - I haven't seen any DC aeration pumps, most if not all are 120 or 240VAC, at least in the size I might need. I'll look...
http://www.tigoenergy.com/site.php?95b2dca2-ca6c
https://enlighten.enphaseenergy.com/public/systems/Hctc107221

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