<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Have you shortened the transfer time from gen to inv, voltage \u201ccut out"acceptance of the gen in power instead of their 90Vac to say 110V/L ? Raising the output voltage on the 6848s & gen set for VD/voltage sag issues under heavy loading? Watch this as sometimes under heavy loading it will cut the AC input. I use the config tool to address this kind of issue, gives me a bit more control. <div class=""> I have a client that has a large external battery charger similar to a fork truck unit that he alleges causes "dirty power" while the genset is supplying power to the charger, w/o charging thru the inverters. Unfortunately w/ the virus I have yet to confirm.<div class=""><div><blockquote type="cite" class=""><div class="">On Apr 21, 2020, at 8:27 AM, Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com" class="">jason@floridasolardesigngroup.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div dir="ltr" class=""><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">I actually need 400Adc at 51V nominal of total charge rate. I was hoping to use 100Adc chargers for redundancy, or some combination of 2-8 chargers to reach the needed current, assuming they can be synced up. I don't think the charging algorithm needs to be complicated. We are basically bulk charging the LiPOs to 80% with the battery BMS controlling the generator. The concept is to get to 80% sometime in the night and solar kicks in during the day to reach 100% using 2-stage charging from the XW charge controllers.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br class=""></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">The problem I have is the quad XW6048s in the system run at a pretty good load typically... often over 50%. This is off-grid with generator backup. The transfer switches in the XW6048 are causing surges and brownouts when the switched loads are high, especially smart dimmers and televisions. I need seamless power for this client. My thought is to abandon the internal chargers in the XW6048s and just run loads off inverter power full-time. I would charge the batteries with external battery chargers. The tricky part is how to adjust the charge rate based on load, and also based on solar input. I need to limit the net charging current. Of course, I still need 400Adc of charging current, which I'm learning might be hard to find. I don't really want to buy four more XWs - that's a pretty expensive solution. </div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br class=""></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Jason Szumlanski</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Florida Solar Design Group</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br class=""></div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Apr 17, 2020 at 4:26 PM Dave Angelini Offgrid Solar <<a href="mailto:offgridsolar@sti.net" class="">offgridsolar@sti.net</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p class="">I use the CSW 4048. It has a 50 amp charger. A good spare for clients. Get 2 of them. Repurpose an old Radian or XW well over 100A. XW+ is 140adc.</p><p class=""><strong class=""><span style="font-size:small" class="">Dave Angelini Offgrid Solar</span></strong></p>
<div class="">
<pre class=""><strong class=""><span style="font-size:small" class="">"we go where powerlines don't"
<a href="https://mailtrack.io/trace/link/818d0fc14d35240172dc7b5e76e9b358639d0699?url=http%3A%2F%2Fmembers.sti.net%2Foffgridsolar%2F&userId=1613865&signature=a20ca8855bc640ef" target="_blank" class="">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net" target="_blank" class="">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
</div><p class="">On Fri, 17 Apr 2020 14:21:14 -0400, Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com" target="_blank" class="">jason@floridasolardesigngroup.com</a>> wrote:</p>
<blockquote type="cite" style="padding-left:5px;border-left:2px solid rgb(16,16,255);margin-left:5px;width:100%" class="">
<div dir="auto" class="">I'm looking for a standalone 51V nominal battery charger suitable for a LiPO battery with 2-stage charging and adjustable setpoints for max current and battery voltage. It would require dual chargers with 100A capacity (I want dual chargers for redundancy so I have at least 50% capacity if one goes bad). Ideally they would sync up so they change stages simultaneously, but I'm not sure if that's really important.
<div dir="auto" class="">
<div dir="auto" class=""> </div>
<div dir="auto" class="">Who makes something like that?</div>
<div dir="auto" class=""> </div>
<div dir="auto" class="">Jason Szumlanski</div>
<div dir="auto" class=""> </div>
<div dir="auto" class=""> </div>
</div>
</div>
</blockquote>_______________________________________________<br class="">
List sponsored by Redwood Alliance<br class="">
<br class="">
List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank" class="">RE-wrenches@lists.re-wrenches.org</a><br class="">
<br class="">
Change listserver email address & settings:<br class="">
<a href="https://mailtrack.io/trace/link/47d978507b9775cf89c2c4ac9665997e7f3c2d10?url=http%3A%2F%2Flists.re-wrenches.org%2Foptions.cgi%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=61d5cd552bcb7a04" rel="noreferrer" target="_blank" class="">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br class="">
<br class="">
List-Archive: <a href="https://mailtrack.io/trace/link/751a499f55945df4070b9d5521e2cdfbcea242a8?url=http%3A%2F%2Fwww.mail-archive.com%2Fre-wrenches%40lists.re-wrenches.org%2Fmaillist.html&userId=1613865&signature=8afbf050d5afe9e0" rel="noreferrer" target="_blank" class="">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a><br class="">
<br class="">
List rules & etiquette:<br class="">
<a href="https://mailtrack.io/trace/link/371ce356d356262bb1fe8e503601758f8bac958e?url=http%3A%2F%2Fwww.re-wrenches.org%2Fetiquette.htm&userId=1613865&signature=eb4588d3c5c730cd" rel="noreferrer" target="_blank" class="">www.re-wrenches.org/etiquette.htm</a><br class="">
<br class="">
Check out or update participant bios:<br class="">
<a href="https://mailtrack.io/trace/link/e9ea24bb0cec5ce64b3012496a3a8b6390d7a863?url=http%3A%2F%2Fwww.members.re-wrenches.org&userId=1613865&signature=b340c2774b3cc0f9" rel="noreferrer" target="_blank" class="">www.members.re-wrenches.org</a><br class="">
<br class="">
</blockquote></div><img width="0" height="0" class="mailtrack-img" alt="" style="display:flex" src="https://mailtrack.io/trace/mail/b6d47cdc4c084a9af4d559105ce135b442abb159.png?u=1613865"></div>
_______________________________________________<br class="">List sponsored by Redwood Alliance<br class=""><br class="">List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" class="">RE-wrenches@lists.re-wrenches.org</a><br class=""><br class="">Change listserver email address & settings:<br class=""><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" class="">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br class=""><br class="">List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html<br class=""><br class="">List rules & etiquette:<br class="">www.re-wrenches.org/etiquette.htm<br class=""><br class="">Check out or update participant bios:<br class="">www.members.re-wrenches.org<br class=""><br class=""></div></blockquote></div><br class=""><div class="">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; border-spacing: 0px;"><div class=""><blockquote type="cite" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; " class=""><div class=""><span class="Apple-style-span" style="border-collapse: separate; font-family: Times; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; font-family: Times; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; " class=""><span class="Apple-style-span" style="font-family: 'Times New Roman'; font-size: 12px; "><b class=""><a href="blocked::mailto:Tump@swnl.net%22%20%5Co%20%22blocked::mailto:Tump@swnl.net" class="">Tump@swnl.net</a></b><span style="font: normal normal normal 12px/normal Arial; " class=""> </span> <a href="blocked::http://www.swnl.net/%22%20%5Co%20%22blocked::http://www.swnl.net/" class=""><b class="">www.SWNL.net</b></a></span><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; " class=""><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; " class=""><div class=""><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal 'Times New Roman'; " class=""> <span style="font-weight: normal; color: rgb(45, 44, 250); " class=""> </span><span style="font-weight: normal; font: normal normal normal 18px/normal 'Times New Roman'; color: rgb(45, 44, 250); " class="">Solarwinds Northernlights</span> <b style="font-weight: normal; " class=""><i class=""> </i></b></div><div style="font-weight: normal; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 10px/normal 'Times New Roman'; " class=""><span style="font: normal normal normal 12px/normal 'Times New Roman'; " class=""><b class=""><i class=""> Serving Mid Coast Maine & Northern California</i></b></span><span style="font: normal normal normal 10px/normal Arial; " class=""><b class=""><i class=""><br class=""></i></b></span><b class=""><i class=""> 207-832-7574 Cl. 610-517-8401 </i></b></div><div style="font-weight: normal; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal 'Times New Roman'; " class=""><span style="color: rgb(45, 44, 250); " class=""><b class=""><i class=""> </i></b></span><b class=""><i class="">Blair "TUMP" May</i></b></div><p style="font-weight: normal; margin-top: 5px; margin-right: 0px; margin-bottom: 5px; margin-left: 0px; font: normal normal normal 12px/normal 'Times New Roman'; color: rgb(0, 144, 25); " class=""><span style="color: rgb(0, 0, 0); " class=""><b class=""><i class=""> ******** MAINE'S CHARTER ********<br class=""> </i></b></span><b class=""><i class=""> </i></b><span style="text-decoration: underline; " class=""><b class=""><i class=""> NABCEP "Certified PV Installer"</i></b></span><span style="text-decoration: underline; color: rgb(0, 0, 0); " class=""><b class=""><i class=""> <br class=""></i></b></span><span style="color: rgb(0, 0, 0); " class=""><b class=""><i class=""> <br class=""> ******** MAINE'S CHARTER ********<br class=""> </i></b></span><span style="text-decoration: underline; " class=""><b class=""><i class=""> Trace Xantrex "Certified" Dealer / Installer"</i></b></span></p><div style="font-weight: normal; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal 'Times New Roman'; min-height: 15px; " class=""><br class=""></div></div></div></span></div></span></div></span></span></div></div></blockquote></div></span><br class="Apple-interchange-newline">
</div>
<br class=""></div></div></body></html>