Couldn't you power a relay from the incoming utility, so it closes on loss of utility?<br><br><div class="gmail_quote">On Thu, Aug 9, 2012 at 11:18 AM, Allan Sindelar <span dir="ltr"><<a href="mailto:allan@positiveenergysolar.com" target="_blank">allan@positiveenergysolar.com</a>></span> wrote:<br>
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Wrenches,<br>
For a grid-tied-with-backup system that is still in the design
stage, we have a customer request for a signal to let them know when
an outage occurs and they are running on backup power, so that they
may turn off unnecessary loads and "go into backup consciousness".
The problem is that the entire home would be on backup, with the
GTWB system tied into a meter and main disconnect location away from
the home, rather than the more typical main panel/subpanel approach
at the home. Any relay-based alarm based on loss of grid AC would
not likely trigger, as the switchover is too quick. Any ideas for
simple solutions, please?<span class="HOEnZb"><font color="#888888"><br>
Allan<br>
<div>-- <br>
<font face="Times New Roman, Times, serif"><b>Allan Sindelar</b></font><br>
<small><a href="mailto:Allan@positiveenergysolar.com" target="_blank"><font color="#000099" face="Times New Roman, Times, serif"><u>Allan@positiveenergysolar.com</u></font></a></small><font face="Times New Roman, Times, serif"><br>
<span style="font-size:10pt">NABCEP Certified Photovoltaic
Installer<br>
NABCEP Certified Technical Sales Professional<br>
New Mexico EE98J Journeyman Electrician<br>
Founder and Chief Technology Officer<br>
<b>Positive Energy, Inc.</b><br>
3209 Richards Lane (note new address)<br>
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<b><a href="tel:505%20424-1112" value="+15054241112" target="_blank">505 424-1112</a></b><br>
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