<br><font size=2 face="sans-serif">Hello Wrenches,</font><font size=3 face="Arial">
<br>
</font><font size=2 face="sans-serif"><br>
There are certain generators which the XW series inverters find very difficult
to qualify. This is due to the fact that generator coils are wound in different
ways, and even though you may have the voltage and frequency within specs,
there are additional high frequency harmonics on the generator output that
will cause the XW inverter not to accept it.</font><font size=3 face="Arial">
</font>
<br>
<br><font size=2 face="sans-serif">The critical area of the generator waveform
is "zero cross" if there is ringing at zero cross the generator
waveform frequency looks like a multiple of 60 Hz. The scenario would be
rejected by most inverters and it is correctable using a 15uF 360 VAC oil
filled motor run capacitor.</font>
<p><font size=2 face="sans-serif">This distortion is greatest for an unloaded
generator. Typically the wave smooths out under load. As mentioned here
before you could add a load to the generator to prove this point, or check
the waveform with an oscilloscope. I know this is not a permanent solution,
but it is a good troubleshooting step.</font>
<p><font size=2 face="sans-serif">I don’t disagree with my tech support
colleagues about updating the firmware to V1.07, the changes made on this
rev. makes the XW more tolerant to generators waveform.</font>
<p><font size=2 face="sans-serif">To get the latest firmware rev. you can
go to our website or email me directly.</font>
<br><font size=2 face="sans-serif">Thank you for the opportunity to participate
on the wrenches list,<br>
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Sandra Herrera</b> | </font><font size=1 color=#008000 face="Arial"><b>
Schneider Electric </b></font><font size=1 face="Arial"><b> | Renewable
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<td><font size=1 color=#5f5f5f face="sans-serif">From:</font>
<td><font size=1 face="sans-serif">jay peltz <jay@asis.com></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">09/09/2011 09:59 AM</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] Help me understand
Gen vs XW</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>
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<br><font size=3>Agreed but it will help with diagnostics.</font>
<br>
<br>
<br>
<br><font size=3>jay </font>
<br>
<br><font size=3>peltz power</font>
<br><font size=3>On Sep 9, 2011, at 9:08 AM, William Miller wrote:</font>
<br>
<br><font size=3>Jay:<br>
<br>
I disconnected the AGS and the problem persisted. Adding a load may
help but I did not test this. This would require a permanent load
and might not be desirable.<br>
<br>
William<br>
<br>
<br>
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