<br><font size=2 face="sans-serif">Hi Brian,</font>
<br><font size=2 face="sans-serif">That is the issue.....LBX mode is the
only way the SW can disconnect from </font>
<br><font size=2 face="sans-serif">a qualified source of AC, thus maximizing
solar production. The best way is </font>
<br><font size=2 face="sans-serif">to get approved to sell, which probably
won't happen with an inverter that old.</font>
<br><font size=2 face="sans-serif">Rgds,<br>
</font><font size=3 color=#008000>_____________________________________________________________________________________</font><font size=3>
<br>
</font><font size=1 face="Arial"><b><br>
Eric Bentsen</b> | </font><font size=1 color=#008000 face="Arial"><b>
Schneider Electric </b></font><font size=1 face="Arial"><b> | Solar
Business</b> | <b>UNITED STATES</b> | <b>Technical
Support Representative</b> <b><br>
Phone:</b> +(650) 351-8237 ext. 001# | <b><br>
Email:</b> </font><a href="mailto:eric.bentsen@schneider-electric.com"><font size=1 color=blue face="Arial"><u>eric.bentsen@schneider-electric.com</u></font></a><font size=1 face="Arial">
| <b>Site:</b></font><a href="http://www.schneider-electric.com/solar" target=_blank><font size=1 color=blue face="Arial"><u>
www.schneider-electric.com/solar</u></font></a><font size=1 face="Arial">
| <b>Address:</b> 250 South Vasco Rd., Livermore, CA 94551
<br>
</font><font size=1 color=blue face="Arial"><u><br>
</u></font><a href="www.schneider-electric.com/solar"><img src=cid:_2_0B0F3DC40B0F3A6000751CD888257BFA></a><font size=1 color=#00a000 face="Arial"><br>
*** Please consider the environment before printing this e-mail</font><font size=1 face="Arial">
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</font>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">From:</font>
<td><font size=1 face="sans-serif">Brian Mehalic <brian@solarenergy.org></font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">To:</font>
<td><font size=1 face="sans-serif">RE-wrenches <re-wrenches@lists.re-wrenches.org></font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Date:</font>
<td><font size=1 face="sans-serif">10/04/2013 01:39 PM</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Subject:</font>
<td><font size=1 face="sans-serif">Re: [RE-wrenches] Trace SWs in Energy
Management Mode</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Sent by:</font>
<td><font size=1 face="sans-serif">re-wrenches-bounces@lists.re-wrenches.org</font></table>
<br>
<hr noshade>
<br>
<br>
<br><font size=3>Thanks, I was thinking about using LBX, but the customer
is really not too excited about it. And based on the manual, Energy
Management Mode seems like it fits the bill, but it doesn't seem to be
going back into stand-alone/inverter mode when the timer is supossed to
turn off.</font>
<br>
<br>
<br><font size=3>Brian Mehalic <br>
NABCEP Certified Solar PV Installation Professional™ R031508-59</font>
<br><font size=3>IREC ISPQ Certified Affiliated Instructor/PV US-0132</font>
<br>
<br><font size=3>PV Curriculum Developer and Instructor</font>
<br><font size=3>Solar Energy International</font><font size=3 color=blue><u><br>
</u></font><a href=http://www.solarenergy.org/ target=_blank><font size=3 color=blue><u>http://www.solarenergy.org</u></font></a>
<br><font size=3><br>
</font>
<br><font size=3>On Fri, Oct 4, 2013 at 3:42 PM, <</font><a href="mailto:Eric.Bentsen@schneider-electric.com" target=_blank><font size=3 color=blue><u>Eric.Bentsen@schneider-electric.com</u></font></a><font size=3>>
wrote:</font>
<br><font size=3 face="sans-serif"><br>
Hi Brian,</font><font size=3> </font><font size=3 face="sans-serif"><br>
LBX would be better for the way this customer is using the system, because
it only connects</font><font size=3> </font><font size=3 face="sans-serif"><br>
to the grid when the batteries get low. Unfortunately, the timers
do not affect LBX, so charging <br>
may occur during the peak rate....or it may not :C)</font><font size=3>
<br>
</font><font size=3 face="sans-serif"><br>
Rgds,</font><font size=3> </font><font size=3 face="sans-serif"><br>
</font><font size=3 color=#008000><br>
_____________________________________________________________________________________</font><font size=3>
</font><font size=1 face="Arial"><b><br>
<br>
Eric Bentsen</b> | </font><font size=1 color=#008000 face="Arial"><b>
Schneider Electric </b></font><font size=1 face="Arial"><b> | Solar
Business</b> | <b>UNITED STATES</b> | <b>Technical
Support Representative</b> <b><br>
Phone:</b> +(650) 351-8237 ext. 001# | <b><br>
Email:</b> </font><a href="mailto:eric.bentsen@schneider-electric.com" target=_blank><font size=1 color=blue face="Arial"><u>eric.bentsen@schneider-electric.com</u></font></a><font size=1 face="Arial">
| <b>Site:</b></font><a href="http://www.schneider-electric.com/solar" target=_blank><font size=1 color=blue face="Arial"><u>
www.schneider-electric.com/solar</u></font></a><font size=1 face="Arial">
| <b>Address:</b> 250 South Vasco Rd., Livermore, CA 94551
</font><font size=1 color=blue face="Arial"><u><br>
</u></font><font size=3 color=blue><u><br>
</u></font><a href="http://www.schneider-electric.com/solar" target=_blank></a><font size=1 color=#00a000 face="Arial"><br>
*** Please consider the environment before printing this e-mail</font><font size=1 face="Arial">
</font><font size=3><br>
<br>
<br>
</font>
<table width=100%>
<tr valign=top>
<td width=14%><font size=1 color=#5f5f5f face="sans-serif">From:</font><font size=3>
</font>
<td width=85%><font size=1 face="sans-serif">Brian Mehalic <</font><a href=mailto:brian@solarenergy.org target=_blank><font size=1 color=blue face="sans-serif"><u>brian@solarenergy.org</u></font></a><font size=1 face="sans-serif">></font><font size=3>
</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">To:</font><font size=3>
</font>
<td><font size=1 face="sans-serif">RE-wrenches <</font><a href="mailto:re-wrenches@lists.re-wrenches.org" target=_blank><font size=1 color=blue face="sans-serif"><u>re-wrenches@lists.re-wrenches.org</u></font></a><font size=1 face="sans-serif">></font><font size=3>
</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Date:</font><font size=3>
</font>
<td><font size=1 face="sans-serif">10/04/2013 12:04 PM</font><font size=3>
</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Subject:</font><font size=3>
</font>
<td><font size=1 face="sans-serif">[RE-wrenches] Trace SWs in Energy Management
Mode</font><font size=3> </font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Sent by:</font><font size=3>
</font>
<td><a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target=_blank><font size=1 color=blue face="sans-serif"><u>re-wrenches-bounces@lists.re-wrenches.org</u></font></a></table>
<br><font size=3><br>
</font>
<hr noshade>
<br><font size=3><br>
<br>
<br>
Have a friend that is on an electric co-op where peak $/kWh is 4x the off-peak
rate. Peak hours are 6-10 am in the winter and 12-6 pm in the summer.
<br>
<br>
He has relocated an older system from his previous house to his new one;
circuits were separated out to sub-panel that is connected to the inverter
AC output. The reinstallation is very professional. <br>
<br>
Two Trace SW4024 in series (04/96) <br>
120/240 Vac Grid connected to AC1 of each inverter <br>
575 Ah battery bank <br>
Two C40s with digital displays, ~ 4.5 kW STC array total <br>
Trimetric <br>
<br>
The goal is to not use any utility energy during peak times, unless the
low battery voltage setting is reached, and in general to run as an off-grid
system, minimizing charge time from the grid during off-peak hours as well.
The assumption (I know it's a tough one, but I'm coming in after
the transition) is that the PV array should at least be able to provide
the bulk of the load; using the grid to charge the batteries to ensure
they are regularly filled and to maximize their life expectancy. The
customer is also managing loads actively. <br>
<br>
It's been a few years, but I used to work on these all the time; however
it was usually off-grid with a genset, or fixing poorly maintained Y2K
systems which were always in float. I'm attempting to use the energy management
mode. <br>
<br>
Inverter settings: <br>
Clocks: Time is accurate <br>
Grid AC1 amps AC: 60 <br>
Max charge amps AC: 10 (each inverter) <br>
<br>
Grid usage: FLT <br>
Set start charge time: 23:00 <br>
Start bulk time: 23:10 <br>
Set end charge time: 05:00 <br>
Set float volts DC: 25.4 <br>
Bulk volts DC: 28.8 <br>
Absorb time: 1.5 hours <br>
Low battery cut-out: 22 <br>
Low battery cut-in: 25.4 <br>
<br>
Okay, programmed the system, both inverters are inverting, AC1 is blinking
green, looks good. Then a well pump kicks on, registers 70 A DC on
the Trimetric. This causes inverter 1 to go into bulk charging and
pass through about 10 additional amps from the grid to the load (inverter
2 continued to inverter about 10 amps for the load). Inverter 1 soon
cycled into float, then went back to what invertering (amber light) and
green blinking AC1 (which is what I want it to be at). <br>
<br>
Had to leave, both the customer and I had other obligations. <br>
<br>
He took a picture of the inverter sat 11:15 pm, and they were in bulk,
battery voltage rising...exactly as planned. But then in the next
set of pictures, taken at 7 am, after the end of the charge time, they
were in float, not inverting, even though, based on the Trimetric readings
at 11 (64%, 85A charging), and the fact that charging would have been active
all night, they were not in anyway at a low voltage condition (Trimetric
readings am readings were 85%, trickle charge, 25.6 V). <br>
<br>
Something seems amiss. Any suggestions or insight? <br>
<br>
Thanks! <br>
<br>
Brian Mehalic <br>
NABCEP Certified Solar PV Installation Professional™ R031508-59 <br>
IREC ISPQ Certified Affiliated Instructor/PV US-0132 <br>
<br>
PV Curriculum Developer and Instructor <br>
Solar Energy International</font><font size=3 color=blue><u><br>
</u></font><a href=http://www.solarenergy.org/ target=_blank><font size=3 color=blue><u>http://www.solarenergy.org</u></font></a><font size=3>
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