If it is useful to you, I can grab a waveform from my scope connected to my outback and post it.
On Tue, Apr 16, 2013 at 3:27 PM, All Solar <allso...@scswifi.net> wrote: > coffee machine is a Miele CVA 4066. > > Sent from Jeremy's IPhone. Sorry for typos and shorthand! > > On Apr 16, 2013, at 12:46 PM, boB <b...@midnitesolar.com> wrote: > > > > > I believe these problems are mainly due to the high frequency switching > content of the typical sinewave inverter > > these days. > > > > I (and other manufacturers I'm sure) would be very interested to know > which appliances are susceptible to > > this noise so that we can try to reduce these incompatibilities. I'm > sure we can't take care of 100% of > > the incompatibilities but we can try to get closer. > > > > For instance, what kind of coffee maker was that, Jeremy ? > > > > boB > > > > > > > > On 4/16/2013 11:36 AM, Bruce Erickson wrote: > >> I'm having a similar issue with a GRID-TIE inverter just now. SMA > 5000US which, when it wakes up every morning, removes the date and time > from the programming in the customers' Monitor brand kerosene heater. They > have to re-enter it daily, which is annoying enough, but when they go out > of town, they have to leave the inverter off to avoid coming home to a cold > house. > >> > >> So far SMA has had us move the breaker as far as possible from the > heater breaker, to no avail. They had no other suggestions. I used a > Panamax plug-in power conditioner with 50 dB of EMI filtering on the heater > outlet, which has reduced the frequency of the problem to once a day, when > it wakes up, from a few times a day. Trying a different heater is out of > the question due to cost, so I'm stumped as how to avoid an unhappy > customer, unless the answer is experimenting with more robust power > conditioners. > >> > >> Bruce Erickson > >> Mendocino Solar Service > >> PO Box 1252 > >> Mendocino, CA 95460 > >> 707-937-1701 > >> 707-937-1741 fax > >> br...@mendocinosolar.com > >> > >> > >> > >> > >> On Apr 16, 2013, at 11:12 AM, Dave Palumbo wrote: > >> > >>> Jeremy, > >>> > >>> << What to look for? >> > >>> > >>> Unfortunately, probably a different coffee maker. > >>> I've gone through this with several different appliances over the > years on > >>> sine wave inverter output. Washing machines, refrigerators, > dishwashers it > >>> could be anything with electronics. Specific manufacturers typically > cannot > >>> be avoided in order to solve this issue. Year to year manufacturers may > >>> change the design of their appliances, so blanket statements on what > works > >>> and what doesn't are unreliable. All appliances (excepting a few) are > >>> designed to operate on utility power, not inverter power. Inverter > power > >>> (excepting Exeltech and possibly others) typically has more distortion > than > >>> utility power. Some appliances cannot tolerate the simulated inverter > sine > >>> wave power. I always council my inverter customers that I cannot > guarantee > >>> that all appliances with work flawlessly and that some may not work at > all. > >>> I advise off-grid clients to buy appliances where there is a liberal > return > >>> policy. > >>> > >>> David Palumbo > >>> Independent Power LLC > >>> 462 Solar Way Drive > >>> Hyde Park, VT 05655 > >>> www.independentpowerllc.com > >>> Vermont Solar Partner > >>> 25 Years Experience, (802) 888-7194 > >>> > >>> > >>> > >>> > >>> -----Original Message----- > >>> From: re-wrenches-boun...@lists.re-wrenches.org > >>> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of All > Solar > >>> Sent: Tuesday, April 16, 2013 12:47 PM > >>> To: re-wrenches@lists.re-wrenches.org > >>> Subject: [RE-wrenches] Outback wave form > >>> > >>> Have a client with a new coffee maker that will not run from their new > dual > >>> outback setup. Has anyone heard of this lately. We have had no > problems with > >>> appliances and sine wave inverters. What to look for? > > > > _______________________________________________ > > 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 > > -- Chris Mason President, Comet Systems Ltd www.cometenergysystems.com Cell: 264.235.5670 Skype: netconcepts
_______________________________________________ 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