diy solar

diy solar

Best solar hybrid off grid inverter

R

Rho

New Member
Joined
Oct 5, 2021
Messages
166
Location
Tulum,Mx
Hi,
I am wondering and hoping to get others opnions of their off grid,hybrid inverters. I do not want grid feed,just grid when solar or battery is not enough.
Thank you for anyone and all that take the time to give advise. I have used on grid inverter( rip off), low frequency China blew up. Growatt spf 5000es with AT currently thumping thumping,and 52 error. Once I reset in morning several times it works seems to prefer sub mode other are smoking dangerous or fault error. It want to use grid amps even though solar amps are more than enough. I turn it off when I leave and at night. FEAR ?
 
Last edited:
EG4? MidNite? Outback? There are a lot of options, it really depends on:

1: Capacity
2: Voltage output (Split phase, 110, 220, etc)
3: Budget

Normally the Growatts are a "Pretty Good" option so the fact that you're having that kind of trouble should be a pretty rare event.
 
Error 52 is bus voltage too low.
The only thing that should cause this is a very discharged battery, and no solar input.
 
Rho said:
Hi,
I am wondering and hoping to get others opnions of their off grid,hybrid inverters. I do not want grid feed,just grid when solar or battery is not enough.
Thank you for anyone and all that take the time to give advise. I have used on grid inverter( rip off), low frequency China blew up. Growatt spf 5000es with AT currently thumping thumping,and 52 error. Once I reset in morning several times it works seems to prefer sub mode other are smoking dangerous or fault error. It want to use grid amps even though solar amps are more than enough. I turn it off we I leave and at night. FEAR ?
Click to expand...
Next3 15 kW or Next1 for the EU or Next3 UL for the US, from Studer Innotec. These are multi-mode inverters (grid / hybrid / island - 48V with automatic and programmable management of switching between the three modes) in three-phase a single device replaces six different devices ... and with a Voc of 900V for solar! In my opinion it is the only device on the market today that is so versatile... a world breakthrough. The price may seem scary, but if you think about it globally it's not that expensive!
I have worked with their equipment and for my part Studer, although not well known, is the Rolls Royce of island inverters.
In the EU the Next3 with all options is ~18000$...
 
I would like 5k to 8 k
I have 20 250watt panels older
10 new waiting to be installed 330w
Split phase with auto transformer in load box.
Thinking creating 2nd load box using the 330 panels. It will not have transformer. Using it to power ac units,pool pump, water well pumps. It is split phase 220v input ac.
 
timselectric said:
Strange indeed
Click to expand...
Yes I have video of it. Signature has been working with me. Like a ghost . Some circuits have power when grid is off,battery off and inverter off. I can get 80 to 92 volts on some plugs.
 
Last edited:
Rho said:
Yes I have video of it. Signature has been working with me. Like a ghost . Some circuits have power when grid is off,battery off and inverter off. I can get 80 to 92 volts on dome plugs.
Click to expand...
That's crazy. I assume you have checked all of the wiring. I hope that you figure out what is going on.
 
I cannot recommend Growatt. Too noisy and pathetic documentation. Still have not received an answer on how to safely connect mine to the grid.
 
  • Like
Reactions: Rho
I love my Growatt and will be getting at least 3 to 5 more.
Unless I can get my hands on a couple of the new 16kw Deye beasts.
 
timselectric said:
That's crazy. I assume you have checked all of the wiring. I hope that you figure out what is going on.
Click to expand...
Yes checked it so many times. Electrician has checked it two times. It is driving us crazy. Wondering if neighbors are the problem. Line of least resistance gets the power.
 
Rho said:
Hi,
I am wondering and hoping to get others opnions of their off grid,hybrid inverters. I do not want grid feed,just grid when solar or battery is not enough.
Thank you for anyone and all that take the time to give advise. I have used on grid inverter( rip off), low frequency China blew up. Growatt spf 5000es with AT currently thumping thumping,and 52 error. Once I reset in morning several times it works seems to prefer sub mode other are smoking dangerous or fault error. It want to use grid amps even though solar amps are more than enough. I turn it off we I leave and at night. FEAR ?
Click to expand...
It doesn't work quite the way you say. If you have an off-grid system, all of the loads are powered by that system from the battery + solar. If that system can't handle all the load and goes down, it switches to Bypass and all of the loads are powered by the grid through the bypass switch. It can't partially take what it needs from the grid, it is all or nothing, one or the other, not both. If you are attempting to run it in parallel with the grid improperly, that is both dangerous and against all regulations, and I hope I've misunderstood what you're saying toward the end there.
 
ncsolarelectric said:
It doesn't work quite the way you say. If you have an off-grid system, all of the loads are powered by that system from the battery + solar. If that system can't handle all the load and goes down, it switches to Bypass and all of the loads are powered by the grid through the bypass switch. It can't partially take what it needs from the grid, it is all or nothing, one or the other, not both. If you are attempting to run it in parallel with the grid improperly, that is both dangerous and against all regulations, and I hope I've misunderstood what you're saying toward the end there.
Click to expand...
Several off grid inverters are capable of sharing the loads with the grid. My 5000ES can provide all available solar to the loads, and let the grid make up the difference. This would take some of the load off of the original grid tied inverter. And allow it to export more to the grid.
 
Last edited:
timselectric said:
Several off grid inverters are capable of sharing the loads with the grid. My 5000ES can provide all available solar to the loads, and let the grid make up the difference. This would take some of the load off of the original grid tied inverter. And allow it to export more to the grid.
Click to expand...
Okay, this is like what we used to call a Double-Conversion UPS. The AC (or Solar) goes to a powerful AC-DC converter and battery charger that can provide the full inverter input power in the case where there are no batteries, or solar. I designed these back in the 1990's, without the solar input. I didn't realize these inverters had such powerful input-side power converters. The largest I ever worked on was 150kW, 3Phase UPS.
 
ncsolarelectric said:
Okay, this is like what we used to call a Double-Conversion UPS. The AC (or Solar) goes to a powerful AC-DC converter and battery charger that can provide the full inverter input power in the case where there are no batteries, or solar. I designed these back in the 1990's, without the solar input. I didn't realize these inverters had such powerful input-side power converters. The largest I ever worked on was 150kW, 3Phase UPS.
Click to expand...
It's actually done on the AC side. The solar goes through the inverter and is synchronized with the grid on the output. Similar to a grid tied string inverter, without the capability to export. Battery backup is optional. But, not required.
 
You must log in or register to reply here.

Similar threads

T
Recommendations for off-grid solar setup expandable to on-grid later.
Replies
11
Views
346
Marcaroni
Marcaroni
M
Off grid hybrid inverter SUB mode safety
Replies
14
Views
879
Mayfield
M
P
Hybrid solar inverter grid power efficiency
Replies
11
Views
537
pant
P
P
Off grid with hybrid
Replies
8
Views
548
Pjw88
P
carniola
Heat pump wired to Deye hybrid inverter
Replies
9
Views
249
houseofancients
houseofancients
Back
Top