<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I\u2019m currently building a similar sized system (a bit larger), so I know what the costs are for such scale. Seems like 6-9 SolArks or XWpros for dedicated closed loop charging only wouldn\u2019t be unreasonable? <div class=""><br class=""></div><div class="">If an equally sized battery charger exists it would be a monstrosity!<br class=""><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Dec 2, 2021, at 7:53 AM, Jay <<a href="mailto:jay.peltz@gmail.com" class="">jay.peltz@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="content-type" content="text/html; charset=utf-8" class=""><div dir="auto" class=""><div dir="ltr" class="">Hi all</div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class="">Sorry I guess I didn\u2019t explain the clients wants well enough</div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class="">1. 90-100kwh+ 48 vdc lithium battery </div><div dir="ltr" class="">2. 208 3 phase AC generator powering 48v nominal battery chargers.</div><div dir="ltr" class="">208-3phase as that is the house/EE design voltage. </div><div dir="ltr" class="">3. AC generator because it\u2019s back up if the inverters fail, so no DC generator. </div><div dir="ltr" class="">4. Client doesn\u2019t want any drop outs or have to reset clocks etc during generator/inverter- charging/switchover.</div><div dir="ltr" class="">5. Inverter size is not decided yet, probably 40-80kw. </div><div dir="ltr" class="">6. Generator size isn\u2019t specified yet, but given the loads 60-125kw probably. </div><div dir="ltr" class="">Size would be based on battery charging or max ac load which ever is larger. </div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class="">That leads me external chargers. </div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class="">I\u2019m looking for large programmable battery chargers for lithium batteries powered from a 208-3phase ac generator in the 60-125 kw size range. </div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class="">Thanks</div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class="">Jay</div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class=""><br class=""><blockquote type="cite" class="">On Dec 2, 2021, at 6:56 AM, MDElectricSolar <<a href="mailto:mdelectricsolar@gmail.com" class="">mdelectricsolar@gmail.com</a>> wrote:<br class=""><br class=""></blockquote></div><blockquote type="cite" class=""><div dir="ltr" class="">\ufeff<meta http-equiv="content-type" content="text/html; charset=utf-8" class="">Maybe a DC output generator, the Wildcat Maverick charges a 48v battery bank directly and has it\u2019s own controls, independent from the inverter.<div class=""><br class=""></div><div class=""><a href="https://wildcatpowergen.com/pages/maverick" class="">https://wildcatpowergen.com/pages/maverick</a><br class=""><br class=""><div dir="ltr" class=""><div class="">Michael D Nelson</div><div class="">MD Electric & Solar, Inc.</div><div class="">707-684-0064 mobile</div><div class="">707-884-1862 office</div><div class=""><a href="http://www.mdelectricsolar.com" class="">www.mdelectricsolar.com</a></div><div class=""><a href="http://www.facebook.com/mdelectricandsolar" class="">www.facebook.com/mdelectricandsolar</a></div><br class=""></div><div dir="ltr" class=""><br class=""><blockquote type="cite" class="">On Dec 2, 2021, at 6:27 AM, Mac Lewis <<a href="mailto:maclewis1@gmail.com" class="">maclewis1@gmail.com</a>> wrote:<br class=""><br class=""></blockquote></div><blockquote type="cite" class=""><div dir="ltr" class="">\ufeff<div dir="ltr" class="">Hi Jay, <div class=""><br class=""></div><div class="">Is the plan to feed DC current (from generator and grid) into the batteries and keep the inverters as power source for loads?</div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Dec 2, 2021 at 6:30 AM Darryl Thayer <<a href="mailto:darylsolar1@gmail.com" class="">darylsolar1@gmail.com</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"><div dir="ltr" class=""><div class="gmail_default" style="font-family:"times new roman",serif;font-size:large">Jay I am confused as usual, what are the loads? AC or DC? How are you charging the battery from the generator or how is the battery powering the loads? What is the desired current or the size of the generator? sorry if this I dumb question</div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Dec 1, 2021 at 2:23 PM Jay <<a href="mailto:jay.peltz@gmail.com" target="_blank" class="">jay.peltz@gmail.com</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">I got a call from a colleague that is designing a very large roughly 90-100 kWh lithium battery at 48v. <br class="">
<br class="">
He\u2019s looking for large AC chargers to charge this bank. The reason is total elimination of switch over delay from inverter to generator and back. <br class="">
<br class="">
One technique is to use inverters for this, but pretty pricey. <br class="">
<br class="">
Any recommendations as to equipment, brands etc? <br class="">
<br class="">
It would be a 208 3 phase AC side powered by a generator. <br class="">
<br class="">
Thx <br class="">
Jay<br class="">
<br class="">
Peltz power. <br class="">
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</blockquote></div><br clear="all" class=""><div class=""><br class=""></div>-- <br class=""><div dir="ltr" class="gmail_signature"><div class=""><br class=""></div><div class=""><font color="#305A78" face="'times new roman', serif" class=""><br class=""></font></div><div class=""><br class=""></div>Mac Lewis<br class=""><br class=""><span style="font-family: "Times New Roman"; font-size: inherit; color: rgb(255, 153, 0);" class=""><b class=""><font face="Arial, Helvetica, sans-serif" size="3" class=""><p align="left" class=""><font face="Verdana, Arial, Helvetica, sans-serif" class=""><span style="font-size:small" class=""><span style="font-family:arial;font-weight:normal;color:rgb(48,90,120)" class=""><font face="'times new roman', serif" class="">"Yo solo sé que no sé nada." </font><span style="font-weight:700;color:rgb(104,104,104)" class=""><font face="'times new roman', serif" class="">-Sócrates</font></span></span></span></font></p></font></b></span></div>
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<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><b class=""><br class="Apple-interchange-newline"><br class=""></b></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span class="Apple-tab-span" style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; letter-spacing: normal; text-transform: none; white-space: pre; word-spacing: 0px; -webkit-text-stroke-width: 0px;"> </span><font color="#707070" class=""><b style="font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Michael </b><b class="">Morningstar</b></font></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><b class=""><br class=""></b></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><b class=""> <span class="Apple-tab-span" style="font-style: normal; font-weight: normal; white-space: pre;"> </span><span style="font-weight: normal;" class=""><i class="">Morningstar Electric</i></span></b></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span class="Apple-tab-span" style="white-space: pre;"> </span>PO Box 1494</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><div class=""><span class="Apple-tab-span" style="white-space: pre;"> </span>Mount Shasta, California 96067</div><div class=""><span class="Apple-tab-span" style="white-space: pre;"> </span>530-921-0560</div><div class=""><span class="Apple-tab-span" style="white-space: pre;"> </span>CSLB 949635</div><div class=""> </div></div><span style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"> </span><span style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><span><span><span><img apple-inline="yes" id="2785E9B6-A32A-4CD9-8ED4-134525E54C89" src="cid:D2A6BB84-B59E-4ED1-8484-EDE18DF9A713" class=""></span>
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