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On 4/25/2011 8:56 AM, Mark Frye wrote:
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<title>Enphase Inards - Any Guesses?</title>
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<p><font size="2" face="Arial">Folks,</font>
</p>
<p><font size="2" face="Arial">I have an Enphase D380 micro
inverter sitting on my workbench (such as it is).</font>
</p>
<p><font size="2" face="Arial">With my ohm meter I can detect
continuity between the chasis and the AC equipment ground pin,
between the chasis and the DC- pin, and between the AC
equipment ground pin and DC- pin.</font></p>
<p><font size="2" face="Arial">My assumption is that each of these
three is electrically identical and solidly connected inside
the inverter. But, I don't know.</font></p>
<p><font size="2" face="Arial">The folks at Enphase tech support
will not tell me whether or not this is true.</font>
</p>
<p><font size="2" face="Arial">Anyone out there have any ideas
about this?</font>
<br>
</p>
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<br>
<br>
I believe those inverters may have internal Ground Fault Protection
and would connect, at least,<br>
the DC negative to Chassis (earth) ground via a resettable
(hopefully resettable) fuse.<br>
<br>
One could measure this if they knew what they were doing.<br>
<br>
Not sure about the AC side continuity.<br>
<br>
boB<br>
<br>
<br>
<br>
<br>
<blockquote cite="mid:C8769359F3E94CFA8C4ADE6E0ED550AA@marksdell"
type="cite">
<p><font face="Arial"> </font>
<br>
<font size="2" face="Arial">Mark Frye</font>
<br>
<font size="2" face="Arial">Berkeley Solar Electric Systems</font>
<br>
<font size="2" face="Arial">303 Redbud Way</font>
<br>
<font size="2" face="Arial">Nevada City, CA 95959</font>
<br>
<font size="2" face="Arial">(530) 401-8024</font>
<br>
<a moz-do-not-send="true" href="http://www.berkeleysolar.com"><u><font
size="2" color="#0000ff" face="Arial">www.berkeleysolar.com</font></u></a><font
size="2" face="Arial"> </font>
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