Hi I have 3 GROWATT SPF 5000 ES hybrid. I have a few questions that I cannot fully find such as a replay or a clear answer from the user manual.
The setup
· We get a lot of power cuts in our areas due to the location of our house, I have 3 inverters GROWATT SPF 5000 ES hybrid and are connected in a 15KW single phase,
· The maximum power I can draw from the grid is 9.5KW,
· The system has a small battery mainly for backup purposes, it's 14.KWH lithium iron, currently I use it in such a way that during the days it works on the PV power/ battery mode (only goes to the grid if it discharges below 70% (it's like this for backup purposes so the battery is always decently charged)
· We rarely exceeded the maximum 9.5Kw power consumption,
· At night it works on the grid.
· The system is also connected to 9.6Kw PV
I am doing some upgrades to the house that will affect the loads. My questions are as follows.
1. At night when the system switches to the grid, if for some reason I need to use more power than the grid can provide (more than the 9.5kw) can the battery compensate? Or; Is there a limit or can you control of how much power the “bypass more” can draw (when it takes power from the grid). I am asking as this had happened and what happened is that the mains tripped due to overload and I didn’t even realise as it went back to the batteries draining all the batteries at night and eventually the system went down . . (is there a way to limit the power an inverter can take for the grid? not the charging mode (as that is easy) the bays pass mode)
2. The next question is if the inverters are wired in 3-phase mode, can you pride back up power from a single phase? Or does the power (grid or generator) have to be 3-phase?
Thanks
Jean
The setup
· We get a lot of power cuts in our areas due to the location of our house, I have 3 inverters GROWATT SPF 5000 ES hybrid and are connected in a 15KW single phase,
· The maximum power I can draw from the grid is 9.5KW,
· The system has a small battery mainly for backup purposes, it's 14.KWH lithium iron, currently I use it in such a way that during the days it works on the PV power/ battery mode (only goes to the grid if it discharges below 70% (it's like this for backup purposes so the battery is always decently charged)
· We rarely exceeded the maximum 9.5Kw power consumption,
· At night it works on the grid.
· The system is also connected to 9.6Kw PV
I am doing some upgrades to the house that will affect the loads. My questions are as follows.
1. At night when the system switches to the grid, if for some reason I need to use more power than the grid can provide (more than the 9.5kw) can the battery compensate? Or; Is there a limit or can you control of how much power the “bypass more” can draw (when it takes power from the grid). I am asking as this had happened and what happened is that the mains tripped due to overload and I didn’t even realise as it went back to the batteries draining all the batteries at night and eventually the system went down . . (is there a way to limit the power an inverter can take for the grid? not the charging mode (as that is easy) the bays pass mode)
2. The next question is if the inverters are wired in 3-phase mode, can you pride back up power from a single phase? Or does the power (grid or generator) have to be 3-phase?
Thanks
Jean