I was looking at the manual for a cyberpower CPS1500AVRLCD3: https://m.media-amazon.com/images/I/A1-K2cO6SbL.pdf
and noticed they call this "GreenPower" which is probably one of many flavors of ECO :-) In this case, they say that they don't power the transformer in normal operation, persumably switching with relays to power it for voltage step up/down during low/high voltage, and turning on the inverter for missing voltage. Obviously they must have some power supply for control electronics and maybe trickle charge of the battery. _______________________________________________ Nut-upsdev mailing list [email protected] https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsdev
