<div dir="ltr">Hi William,<div><br></div><div>Power quality, in your case, refers to how close to 60 Hz (frequency component), 120/240 VAC RMS (amplitude component) your voltage waveform is. Every waveform is the superposition of different frequencies, amplitudes etc. Power quality requirements for a devices input or output are usually defined in total harmonic distortion (THD %) and in voltage ranges. THD is an attempt to quantify harmonics on a waveform. It is the ratio of the sum of all harmonics to the fundamental frequency (60Hz in your case).</div><div>A Sunny Island has THD and amplitude tolerances similar to that of the grid (3%, 105-132VAC). I have found that most generators aren't as close and the distortion in a waveform is easily discernible.</div><div><br></div><div>My approach to your problem might be to ask for the power quality requirements for the UPS not to beep. Document that the Sunny Islands/Generator system is delivering these requirements during beep events using a power quality analyzer. Put problem back on UPS guy if you can prove that your system is delivering adequate power quality. This is how our utility deals with alleged power quality problems.</div><div><br></div><div><br></div><div><br></div><div>Good luck.</div><div><br></div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Oct 12, 2014 at 6:01 AM, Tump <span dir="ltr"><<a href="mailto:tump@swnl.net" target="_blank">tump@swnl.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">I have in the past have used the Fluke power logger 1735 , It will monitor 1/3 phases voltages spikes/dips in V, A, Hz , +++ AND one is able to print out a time line of all the "occurrences" that may trip the UPS. I rent this from some folks in Texas quite reasonable ~ $230/month or weekly too. NO MORE finger pointing!<div> I found that when the generator was charging the batteries, the UPS's acceptable voltage window was below the limits and began beeping, due to the poor voltage regulation of the gen under hi load/charging conditions.<div>Are you able to log the Hz as well as the voltages? The ups sometimes have very close voltage windows that they work within. The SI/SB's power quality should NOT be the issue. With this power logger one is able to see a time line and figure out what it operating at the time of "fault/beep" utility power or generator power. Contact me off list for rental contact info or if you would like to see what the graphs look like. Tool is easy to use and VERY informative.<br><div><div>On Oct 12, 2014, at 1:21 AM, William Miller wrote:</div><br><blockquote type="cite"><span style="border-collapse:separate;font-family:Times;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><div lang="EN-US" link="blue" vlink="purple"><div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif">Friends:<u></u><u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif">I am still having a pi$$ing match with the company that installed the expensive home entertainment system for a client over the issue of power quality. The UPS beeps frequently and the AV system crashes now and then. The lead installer has copped an attitude and is blaming the Sunny Island / Sunny Boy / Generac system for the AV system problems. The UPS emails reports in flurries that indicate a “power failure” has occurred. <u></u><u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif">I have a Dataq data acquisition system sampling at a rate that allows me to see the individual cycles on the system output on one of three phases. During the time that a power failure is reported to have occurred each and every cycle looks great. I know this is not a definitive test of power quality so I upped my game. I bought a Fluke VR1710 power monitor and I am recording power quality from the same receptacle that feeds the UPS.<u></u><u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif">I have some log files from the Fluke Power Log software but the instructions are not that great and I don’t know how to interpret the data. Do any of you have any experience with this software and could possibly advise me?<u></u><u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif">In a more general sense, how good is power to be called “good”? I have done some research and the industry material is a bit overwhelming. Does anyone have a short answer?<u></u><u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif">And lastly, even though the UPS is beeping, if it is doing what it is designed to do, the power quality should not be an issue because the UPS corrects for any problems. (Actually the UPS was beeping—the best move in this situation was to mute the annunciator so at least the homeowner is not hearing the beeper.)<u></u><u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif">I know others of you are dealing with the same problems because it came up on this forum. I am interested in an approach that verifies the Sunny Islands are producing adequately good power, or not, so I can either address the problem or get the AV guy off my rear end.<u></u><u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif">Thanks in advance.<u></u><u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif">William<u></u><u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:Arial,sans-serif"><u></u> <u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:10pt;font-family:Arial,sans-serif;color:black"><span><image002.jpg></span><br>Lic 773985<br><a href="http://www.millersolar.com/" style="color:blue;text-decoration:underline" target="_blank">millersolar.com</a><br><a href="tel:805-438-5600" value="+18054385600" target="_blank">805-438-5600</a><u></u><u></u></span></div><div style="margin-top:0in;margin-right:0in;margin-left:0in;margin-bottom:0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div></div>_______________________________________________<br>List sponsored by Redwood Alliance<br><br>List Address:<span> </span><a href="mailto:RE-wrenches@lists.re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">RE-wrenches@lists.re-wrenches.org</a><br><br>Change listserver email address & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>List-Archive:<span> </span><a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" style="color:blue;text-decoration:underline" target="_blank">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a><br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm" style="color:blue;text-decoration:underline" target="_blank">www.re-wrenches.org/etiquette.htm</a><br><br>Check out or update participant bios:<br><a href="http://www.members.re-wrenches.org" style="color:blue;text-decoration:underline" target="_blank">www.members.re-wrenches.org</a><br><br></div></span></blockquote></div><br><div>
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