Hybrid inverters

[andreit]

Please explain to me the difference between the backup port and non-backup port in a hybrid inverter. From what I understand they are both backed-up by the battery in case of grid failure.

I see Solis S6-EH1P6K-L-PLUS has 'dual backup ports'; what does this mean??

 

[sunshine_eggo]

Based on this manual:

https://www.solisinverters.com/uploads/file/Solis_Manual_S6-EH1P(3-8)K-L-PLUS_EUR_V1,0(20241104).pdf

I only see Generator, Backup and Grid connections. What are you talking about?

 

[ASword]

My understanding is that the backup port is backed up if the grid fails, and the non-backup port is not. Hence the names. The non-backup port is usually the "grid" port.

 

[andreit]

Well, I have a friend with a Deye that connected everything to the non-backup port, and he tested grid loss and his house was also backed by the battery.

 

[1234enough]

Well if your friends Deye does what you know it does and it suits your needs, get one.
If it doesn't Research what may suit your needs.

 

[andreit]

I thought someone knowledgeable and experienced might explain it on this forum.

 

[AshleyL]

Based on this manual:

https://www.solisinverters.com/uploads/file/Solis_Manual_S6-EH1P(3-8)K-L-PLUS_EUR_V1,0(20241104).pdf

I only see Generator, Backup and Grid connections. What are you talking about?

View attachment 275943

As a user of Solis S6, the GEN port can be used as Backup port too, but it has to be configured beforehand.

For the Grid port, if there is a blackout/load shedding, then anything at this port will lose power. This Grid port is 100% grid-tied.

 

[zanydroid]

I thought someone knowledgeable and experienced might explain it on this forum.

It's not standardized, you haven't posted your manual, and really you should do a end-to-end manual test before relying on it anyway. Since you may misunderstand, it may be misconfigured, it may be the wrong revision, ...

 

[andreit]

As a user of Solis S6, the GEN port can be used as Backup port too, but it has to be configured beforehand.

For the Grid port, if there is a blackout/load shedding, then anything at this port will lose power. This Grid port is 100% grid-tied.

AshleyL, thanks! I was hoping you would reply as I knew from another post that you recently bought Solis inverters.
So the grid port will definitely loose power if grid fails, the backup port AND generator port are backed up by the battery if configured beforehand, but what will be the difference between them?? (backup and generator port as backup)

 

[andreit]

To be more specific, if I want a big load like Air Conditioner to be supplied by the PV panels during the day and by the battery during the night, where should it be connected? If I will tie it to the grid port and before the CT, if the grid voltage drops too much or cuts out, it will not be powered by the battery, right?

 

[AshleyL]

AshleyL, thanks! I was hoping you would reply as I knew from another post that you recently bought Solis inverters.
So the grid port will definitely loose power if grid fails, the backup port AND generator port are backed up by the battery if configured beforehand, but what will be the difference between them?? (backup and generator port as backup)

Backup port and Gen port are the same if you configure it as Smart Load Output.

For the Gen Port, you can either configure it as generator port, ac-coupled port or backup (Smart).


Screenshot from random youtube video since my screen is broken and I configure everything via the app (Not at home now, so I can't connect to the bluetooth)
I just select the Smart Load Output and tick that "On grid always on".

I set the Off and Restart at 20% and restart at 21%, but these two percentage settings only applicable if there is an utility blackout because if there is grid power available and "On grid always on" is checked, the Smart port will powered by grid regardless of the set percentage if the battery is too low, useful to charge EV.

To be more specific, if I want a big load like Air Conditioner to be supplied by the PV panels during the day and by the battery during the night, where should it be connected? If I will tie it to the grid port and before the CT, if the grid voltage drops too much or cuts out, it will not be powered by the battery, right?

If you insist on having air-conditioner during blackout, then I suggest you have to wire the air conditioner to the Gen Port and configure it as Smart Load Output, plus configuring the OFF & Restart % accordingly. You don't want to drain all the battery power during blackout/loadshedding to power air conditioning system, do you?

For Backup Port, get refrigerator + fan + router + lighting etc on it?

Any other heavy load or unimportant load can be connected to the Grid Port.

Note: All GEN (Smart), Backup and Grid ports are grid-tied in "Self-Consumption" mode. Better setup the CT and zero export properly if you don't want it to export power.

Solis S6 actually disconnects from the grid if there are overfrequency, underfrequency, overvoltage and undervoltage events and solely powered by the battery + solar.

 

[ali_zuryab]

hi friends need support my solis inverter show SOC always 0%, need advice how make is working with my DIY DALY BMS battery, but DALY BMS APP its show normal, is there any setting in Interverter which can make it work, it anoying







Daly BMS screen shot

 

[AshleyL]

hi friends need support my solis inverter show SOC always 0%, need advice how make is working with my DIY DALY BMS battery, but DALY BMS APP its show normal, is there any setting in Interverter which can make it work, it anoying

View attachment 280029
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Daly BMS screen shot

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Daly BMS? Oh my....you couldn't be more screwed up than this.
My condolences. It will never works well with Daly.
Buy JK Inverter BMS and flash it with latest firmware.
You will have better result instead of insisting on staying with Daly.