I'm looking for some advice.
We have had a solar system installed with four groups of panels, going to inverters in four distant areas of the site. The installer has more or less walked.
It is a large install, I think about 1MW in total so the DNO is involved, they want to witness the shutdown. They are expecting a stop button at the ring main unit to shut all three down within 30 seconds. I think there should be a stop button near the fire panel or have them shut down with the fire alarm. Another thinks there should be a stop button next to each bank of inverters.
I'm sure the correct answer is in there somewhere but as the inverters aren't linked, something additional is required. Solaredge want a fire cable linking all four banks of inverters together and a fire gateway on one bank, connected to a stop button or fire relay. This will require a lot of cable and not an easy job
I think the prefered option is to have a fire relay installed next to each bank of inverters, a fire gateway and then the fire alarm will shut them all down, and we can install a stop button next to the ring main unit to trigger the fire alarm, or a call point, and even call points next to each bank of inverters if we wanted, all considerably easier than anything else, and somewhat automated.
I think the crux of the matter is what is legally required, can anyone point me in the right direction?
