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[-] barsoap@lemm.ee 2 points 5 hours ago

On loss of power these inverters cut off within 20 ms or so.

20ms are exactly 1/50th of a second i.e. our grid frequency I think there's some more leeway. A whole oscillation being gone surely is suspicious and you want to shut off but that might take another millisecond or two.

[-] eleitl@lemm.ee 1 points 30 minutes ago

It's not a hard realtime cutoff spec, more a relais native actuation time. And from the behaviour I've seen they are ramping up slowly over minutes when the mains power is back, which seems a sensible thing to do.

this post was submitted on 22 Dec 2024
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