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Attaching a petrol generator inverter to 3.6kw hybrid

This is so frustrating all the info says Sunsynk is fine with gennys but getting it to work is another matter. My installer does not do gennys and neither do the approved installers in the area, west midlands by the way. I have been in touch with customer services who escalated my problem to tech services and a person called Gerrie responded. I did what I was told but did not see any change on the graphic display(even after being advised it takes 60 secs for inverter to react) where there is a reference to "Gen". I went back to Gerrie but now there is no communications either way.

I have an Excel gen/inverter 3kw dual fuel. I have it in the shed outside. I have wired it into the room where the Sunsynk inverter is and have a break switch in there. So my plan is the simplest possible. Monitor the SOC daily in winter time and if the batteries need charging start the gen up, charge the batteries and when full turn the gen off. Why this is so difficult to do when all the youtube videos are showing really complicated stuff beggars belief. I live alone I use little power so assuming the kettle or oven or dishwasher or washing machine is not on(and they won't be when charging) I use less than 400w. I am tearing my hair out (whats left of it) because the idea is, once this concept is proved of course, is to change my smart meter to "export only" and run off solar/gen charged batteries and save the standing charge which in the UK will only go up. Maybe I bought the wrong inverter but I also have Sunsynk batteries because I thought, perhaps mistakenly, the kit was first class. So far the assembly has worked brilliantly achieving 4kw from solar with 15 panels on good days and between 2 and 3kw on normal days thats per hour by the way. This niggle is really annoying there is a video of Kieth setting up a gen on site which I thought at last! but no it was right by the gen hammering away and the video could not be understood. HELP HELP!!!

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Groots
Oct 07, 2024

One thing - While the grid is connected you cannot use the generator - The inverter will not allow it to connect. You have to isolate the grid before using the generator. On larger systems, they have an ATS output which allow you to use an ATS to do this automatically when using the generator.

You could tick the 'Signal Island Mode' to force the inverter into islanding mode which will isolate the grid, but I would prefer to use a physical isolator - it is much safer.


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