Recent content by RWI

For anyone interested. This morning the SOC jumped from 65 to 100% after the charging voltage had reached the absorption value and reduced the charge current for about one hour. For the rest of the day i will not benefit from my excess solar generation. it looks like it has basically gone...

My configuration has two 8.0 kW Deye Hybrid in parallel. They are new and have been operating for about 3 weeks. On one occasion i noticed that the SOC was changed (reduced downwards) during the night which required additional charging to recover the SOC the following day. They then operated...

Yes because they disconnect the L and N when the grid fails so they can't pass the N through the device and maintain the PE-N link (this is for grid tie inverters. For off grid inverters with grid connection where the two L's are never connected together they hard wire the N through the device...

Anyway many thanks for the esoteric discussion on earthing systems. It is a topic that is not properly understood by many in the industry.

I would not use a relay anyway. It is not a reliable protection device. In any case the four neutrals are all connected together for 99% of the time and all equally earthed through the single PE-N link in the main board.

There is no Parallel diagram for Australia/NZ/SA configuration. I have followed standard AU practice.

Parallel EU diagram shows no PE-N connections at all.

No. Grid and UPS N are both connected to the neutral bar in the main board which is MEN connected to the local earth. This is exactly as Deye diagram and the E of the UPS load on the Deye is not connected.

System is now exactly like a TN-C-S MEN system. The Deye are definitely both or none. I can sort of understand because everything is divide by two in the master and sent to the slave. The grid CT is only connected to the master so the slave would not work if not communicating with the master...

Dumb lead acid batteries. Yes it fixed that issue but I have others. No Problem with UPS load its N is strapped to the Grid N which is MEN connected to earth at the incoming board basically following Deye diagram. My problem is the master inverter not disconnecting from the grid when the grid...

There is more battery information and selectable trending including MPPT voltages which is good information for me. Unfortunately I could not find a trend of the battery SOC which I needed because it went from 50% (the limit set on the time of use) to 3% some time overnight. The battery has...

Hopefully they do not change anything without telling me. By the way I now have access to the logging server for these inverters and a lot more information than you can get from the screen. This is good but the security is my main issue.

Yes I agree. The internet is a battle ground for the major powers and everyone else is a pawn. After many tries I finally connected the two inverters to the Deye server but through a dedicated router so all i have to do is turn it off..

Camera and microphone don't worry me. Cyber attach on the network does. I have first hand experience of this on a system with a very secure gateway. There is no security on the Deye netwrok

Deye need the wifi connection to check the inverters. I did not connect this because I don't like the idea of some Chinese server having control of my electrical system. I will have to try and connect it and then disconnect once they have their information but the connection process is not easy.