Help with weird combo of inverters.

[Gros21]

Well I've got a miss matched system but was wondering how well they should work together and will I need a anti Islanding device.

Aussie so 230v single phase.

I have a sungrow grid tie 3kw
Foxess 5kw grid tie.

Now I've just purchased a hybrid 10kw HV system.

I'm hoping each gridtie will help change the battery quickly (by back feeding inverter as 10kw will be set up not to take load from grid). Then ideally back feed into grid. I'll use a smart meter to limit export to 8kw (what I'm approved for)


Some manufacturers such as victron call this ac coupling. GE/goodwe don't mention it at all.

But will each system effect each inverters anti-islanding and back feed into the grid. Or will it instantly sense grid failure and turn off. Likely from instantly trying to back feed the grid.

If need be I could turn manually isolate from grid kick in the hybrid and that would trigger other 2 units to turn on.

I just can't seem the point of removing a functional system when upgrading. I know will has a heap of miss matched stuff in not reccomend set ups.

 

[crossy]

Exactly which hybrid do you have?

Some, like our Deye units, can create a micro-grid to which you can hook grid tie units to do what you want. Others, not so easy.

Can you link to an online manual for your hybrid??

 

[Gros21]

https://solarlinkaustralia.com.au/wp-content/uploads/2024/06/GE-Installation-Manual-GEH5-10kW-3_4MPPT.pdf?srsltid=AfmBOoolmc3zMtJ2PT3wawSWKBFUt9vy_CKpuBvrcxZh52F58glgtfCS

Its a geh10-1u-10

Yes i want it to create a micro grid but not sure about anti islanding.

Ill likely use the back up port to go to a small sub switchboard for a few points Or a large 50A outlet that could be used then with a Generator tie it which disconnects me from the grid. Plus as i would do this manually i would know to isolate heavy loads (AC/oven/hotwater)