<div dir="auto">Hi William,</div><div dir="auto"><br></div><div dir="auto">You will want to make sure that the eVaults are all running that same firmware and that terminator switches and battery ID #s are set correctly. High SOC and large incoming current could definitely be the reason why voltage skyrocketed up. </div><div dir="auto"><br></div><div dir="auto">Best,</div><div dir="auto"><br></div><div dir="auto">Chris </div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Oct 21, 2023 at 9:39 PM William Miller via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto">12 kw PV nominal. Low tilt angle and old panels so reality is far less. </div><div dir="auto">5 e-vault 18.5 kWh batteries</div><div dir="auto">4 SI 6048</div><div dir="auto">2 SB 6000 US</div><div dir="auto"><br></div><div dir="auto">System operational for some years with flooded batteries. Just installed the e-vaults. I reset the system to factory defaults. I am not sure how to verify the system will properly offset frequency if batteries are full. </div><div dir="auto"><br></div><div dir="auto">Having just written this I realize there is a discrepancy between the SOC the SIs report (46%) and the SOC the e-vaults report (98%). It could be the SIs want to push a lot of charge to the e-vaults but they won’t accept the charge because they are charged. </div><div dir="auto"><br></div><div dir="auto">I installed 3 of the vaults temporarily a week ago. At first there was a large discrepancy between SOC from batteries to SIs. Eventually that delta reduced to 4%. Maybe this problem will resolve itself?</div><div dir="auto"><br></div><div dir="auto">What settings on the SI are necessary to enable frequency shifting?</div><div dir="auto"><br></div><div dir="auto">Thanks everyone for the response. There is nothing worse than being on-site and not knowing how to get a system to operate. I shut off the PV and will let the generator fill in the deficit until Monday. </div><div dir="auto"><div dir="auto"><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><br>William Miller<br>Miller Solar.com<br>805-438-5600<br><a href="http://www.millersolar.com" target="_blank">www.millersolar.com</a><br></div></div></div><div><br></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Oct 21, 2023 at 4:57 PM Ray Walters via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><u></u>
<div>
<p>What is the array size vs the battery size? Sounds like a big
array on a small battery for the voltage to go that high that
fast.<br>
</p>
<p>Ray <br>
Remote Solar<br>
</p>
<div>On 10/21/2023 5:46 PM, William Miller
via RE-wrenches wrote:<br>
</div>
<blockquote type="cite">
<div dir="auto">Friends:</div>
<div dir="auto"><br>
</div>
<div dir="auto">I’m kinda stuck on a project setting up a SI/SB AC
coupled system off grid. When the SB inverters ramp up the
battery voltage jumps to 69 pretty quickly and the system shuts
off. </div>
<div dir="auto"><br>
</div>
<div dir="auto">I checked the mini-grid frequency and it does ramp
up to about 62+ but apparently not soon enough to curtail
charging. I shut off the SBs for now and we can rely on
generator. </div>
<div dir="auto"><br>
</div>
<div dir="auto">Any advice via email or a phone call would be
appreciated. SMA can be less than helpful, especially for
systems with lithium batteries. </div>
<div dir="auto"><br>
</div>
<div dir="auto">Thanks in advance. <br clear="all">
<div dir="auto">
<div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><br>
William Miller<br>
Miller Solar.com<br>
805-438-5600<br>
<a href="http://www.millersolar.com" target="_blank">www.millersolar.com</a><br>
</div>
</div>
</div>
<br>
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