<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">All,<div><br></div><div>The utility(Flathead Electric Co-op) has recently completed automatic meter reading using a power line carrier for all co-op members. I will give them a call to find out the type and frequency of signaling. The state 104 has been occurring within 10 minutes of connecting to the grid. Perhaps the IG uses the zero crossing and is confused by the meter reading signal. </div><div><br></div><div>I have talked with Fronius and it looks like they may send an IG+ as an upgrade. Perhaps the IG+ does not get confused by meter reading signals. Fingers crossed. If it does go into state 104 maybe opening up the frequency window will help.<div><br></div><div>We have no other inverters on this utility for comparison and have had no feedback on the hand full of grid-tied systems out there.</div><div><br></div><div>Thanks for the valuable input,</div><div><br></div><div>Jeff</div><div><br></div><div><div apple-content-edited="true">
<span><img height="50" width="113" id="5f101721-c6b7-4fa8-8fd1-97c771e9aa8d" apple-width="yes" apple-height="yes" src="cid:8BABAF0F-2027-4745-B907-2A6C6E15F7E2"></span><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; 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; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); 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; color: rgb(0, 0, 0); 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; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); 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; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); 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; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); 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; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); 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; "><span style="font-family: Helvetica; font-size: medium; font-weight: normal; font-style: normal; "><br class="Apple-interchange-newline">Jeff Wongstrom</span><div><div><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); 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="font-family: Helvetica; font-size: medium; font-weight: normal; font-style: normal; ">NABCEP Certified</div><div style="font-family: Helvetica; font-size: medium; font-weight: normal; font-style: normal; ">406.291.3416</div><div style="font-family: Helvetica; font-size: medium; font-weight: normal; font-style: normal; "><a href="http://www.thirstylakesolar.com">thirstylakesolar.com</a></div><div style="font-family: Helvetica; font-size: medium; font-weight: normal; font-style: normal; "><br></div><div style="font-family: Helvetica; font-size: medium; font-weight: normal; font-style: normal; "><br></div></span></div></div></span></span></span></span></span></span></span>
</div>
<br><div><div>On Oct 8, 2012, at 7:38 PM, Kent Osterberg wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
<meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type">
<div bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">Jeff,<br>
<br>
Is there any chance the utility has recently implemented a remote
meter reading system? The <a href="http://www.aclaratech.com/AclaraPLS/specsheets/TWACS_UMT-R.pdf">Aclara
TWACs</a> remote meter reading system communicates by putting a
pulse on the line that is very near the zero crossing of the
voltage waveform. Unfortunately the zero crossing is easily and
often used as a reference point for frequency measurements.
Devices that watch the zero crossings are often confused by the
TWACS signal. The signal isn't there constantly -- only when the
local kWr meter has been asked to send data.<br>
<pre class="moz-signature" cols="72">Kent Osterberg
Blue Mountain Solar, Inc.
<a class="moz-txt-link-abbreviated" href="http://www.bluemountainsolar.com/">www.bluemountainsolar.com</a>
t: 541-568-4882</pre>
On 10/8/2012 9:34 AM, Jeff Wongstrom wrote:<br>
</div>
<blockquote cite="mid:F0B02063-6B99-4FDE-BA6B-96F6D48A7912@thirstylakesolar.com" type="cite">Hello wrenches,
<div><br>
</div>
<div>We have a Fronius IG3000 that chronically and frequently
cycles into and out of a state 104(grid frequency not within
admissible range). The utility has monitored the supply and
claims to have found no frequency or supply issues. Fronius
sent a replacement inverter but the error persists. The tie in
point was moved from the critical loads sub panel to the main
distribution panel. The state 104 persists with ALL other
breakers open. A Fluke DMM min/max function captures no
frequency readings outside of the inverter frequency window-same
with voltage readings. </div>
<div><br>
</div>
<div>Any suggestions or recommendations?</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Jeff</div>
<div><br>
</div>
</blockquote></div></blockquote></div><br></div></div></body></html>