Avoid "Optimizers" like the plague! They generate horrendous radio frquency interference, blocking AM and Shortwave and Ham raido HF communication for blocks. It cannot be fixed without removing every panel and re-doiong all the HV wiring into twisted pairs and having RFI chokes on every wire going ito and out of them. The reception is only tollerable.
Furthermore, you can now see the diadavantages of optimizers and microinverters in grid down situations for the DIY kinda person. Sorry... Bob On Mon, Sep 2, 2019 at 2:54 PM Jay Summet via EV <ev@lists.evdl.org> wrote: > Related question: > > I have solar panels, but they each have a DC optimizer on them > (basically does MPPT and production level measurement on a per panel > basis, but sends DC down to the wall mounted inverter). > > When the grid is down, the (Solar Edge SE 10KW) inverter shuts down, and > the DC optimizer (P320 Solar Edge Optimizers) go into a "standby" mode > where they each produce exactly 1 volt. This limits the DC voltage on > the DC lines from the roof to 18 volts (18 panels/optimizers per line). > [They wait for an OK from the inverter before they power back up to full > voltage.] > > My question: Anybody know how much current (if any?) they provide when > in this standby state? 18V is enough to recharge a 12v system, but if > the optimizers are not producing any real current, it's probably useless. > > The spec sheet says 1.0 +/- 0.1 volt DC output in Standby mode, but does > not specify anything about the maximum amps in this state. I would > assume they turn the amp output down quite a bit as well, as this is > designed to make the solar wiring "safe" in the event of power shutdown. > > Just wondering if anybody had measured the actual current available. > > Jay > > > > > > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/index.html > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190902/aba7e846/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
