After one month, a first impression: The zbox runs flawlessly in absolute silence (it is fanless), given a SSD is installed. It is drawing about 11W of power on average. That's a litte less than triple the power the RPi4, but with approximately 10x the computing power. For only running weewx it'd be definitely an overkill. The big question: "how long will it run?" Only time can answer. For me, it was the right choice so far.
michael.k...@gmx.at schrieb am Freitag, 17. Mai 2024 um 18:53:13 UTC+2: > Yes, Gen24 with BYD HVM 22.1 and PV Point. I've actually never tested how > the UPS (EATON Ellipse PRO 1200) likes the PV Point. I am aware of the > Frequencies when in Backup mode. I don't know what full backup solution the > electrician would offer, but it would cost €700 including work. The real > problem that makes it so much more expensive, is that my distributor box is > full, and the solution needs 17 more slots on a DIN rail. A lot of work and > a a couple of hundreds for the hardware. > > Gábor Szabados schrieb am Freitag, 17. Mai 2024 um 14:46:55 UTC+2: > >> As I remember the EU specs is 50Hz +/-1%, so all those look good to me. >> >> Regarding the battery and backup socket, I guess that must be a Fronius >> Gen24 Plus with a BYD battery, and the socket would be the PV Point. As >> just a note, if you don't know it yet, the PV Point socket and the Full >> Backup operates at 54Hz. It is not really advertised, but the point of it, >> to knock out any other Inverters as they would detect an out-of-spec line >> frequency and would shut down. >> >> And if you consider the Enwitec backup box, which as you stated would be >> more than a 1000 with installation, there is a cheaper box also on the >> market by Keno the SH-GEN24-SZR, but still around 1000 without >> installation. >> >> I have one, but have not installed it yet, and felt the need recently >> when the operator did a 3+ hours maintenance and all the UPS depleted in >> the house. >> >> On Thu, 16 May 2024, 16:56 Karen K, <kk44...@gmail.com> wrote: >> >>> michael.k...@gmx.at schrieb am Donnerstag, 16. Mai 2024 um 15:46:28 >>> UTC+2: >>> >>> Since the (public) power grid is part of the hardware your local weewx >>> installation is running on, this is far from being off-topic. >>> >>> >>> There are 3 types of UPS available: off-line, stand-by, and on-line. The >>> first one is off as long as grid power is available and starts when the >>> grid power goes off. The second one is similar, but it is in stand-by. So >>> it start faster than the first one. The on-line one separates the grid and >>> the output entirely. They are connected by DC only. So this type can >>> additionally filter surges etc. The output frequency for the on-line type >>> only depends on the internal circuit, while for the off-line and stand-by >>> type the output frequency is always the same as the grid frequency. >>> >>> I use an on-line UPS and hope that will result in less damage in case of >>> over-voltage, surges, and lightning strokes. >>> >>> To compare to Cameron's histogram I did one myself, based on 5 minutes >>> averages of the grid frequency (NOT the UPS output frequency): >>> >>> [image: netzfrequenzhistogramm.png] >>> >>> This one has the peak at 50.00 Hz. >>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "weewx-user" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/weewx-user/HBDfW-ayRyI/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> weewx-user+...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/weewx-user/78c65e41-5ac1-4e13-9644-e46beb078147n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/weewx-user/78c65e41-5ac1-4e13-9644-e46beb078147n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/bdd1bd6e-d637-4bad-bd3e-fb87537a1951n%40googlegroups.com.
