Hi Ray, #1, I don't see any improvement. But then I find it rarely used anymore with many small loads ( cell phone chargers etc), coupled with cyclic loads and 4 watt LED's etc. Its got to be a really small system to have this be active. I find that if people really want to use this that I'll wire up the remote on/off and they can use that from their bed at night.
#2. It depends on how they measure the efficiency. Since the no load is around 20 watts, if you have a 20 watt load, that makes a efficiency of like 50%, not including the inverter loss's of 6-10% which isn't really helpful in any sort of calculations. I usually use 90% ish ( I think they publish 94% as peak eff.) as my INV design efficiency ( sometimes it'll be lower, sometimes higher), and then add in the idle watts x 24 hrs day. Hope this helps, jay peltz power On Aug 18, 2013, at 3:01 PM, Ray Walters wrote: > I have a couple of Outback questions. On my load analysis sheet, I include > 20 w x 24hr/ day for the inverter's no load draw. > In the past I had very poor luck with the search mode on most inverters, and > found that when I adjusted it so that it came on with efficient lighting, > that the no load draw was still 15 watts. I've just taken to disabling > search mode, and add more modules. > So question 1: has the search mode been improved in the past 5 years? > question 2: Is the no load draw most of the efficiency losses, so could I > set inverter total efficiency to say 98%, while keeping the 480 wh/ day > inverter draw? I don't want to overstate or understate the inverter losses. > > Thanks, > > -- > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer > 303 505-8760 > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
