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<DIV dir=ltr align=left><SPAN class=484580018-21042009><FONT face=Arial
color=#0000ff size=2>Hi Orion,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></DIV>
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<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=484580018-21042009><FONT color=#0000ff> RE: </FONT></SPAN>Can
anyone help me to determine the commutation type and rated power factor (%) for
a Fronius 4000 IG. <SPAN class=484580018-21042009><FONT
color=#0000ff> </FONT></SPAN></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=484580018-21042009></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=484580018-21042009>Line commutation. Basically, this means they sync
with an existing grid (line). Non-islanding inverters are line
commutated.</SPAN></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=484580018-21042009></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=484580018-21042009>PF = 100% (aka 1.0 PF) according to their spec sheet.
Double-check your copy to make sure your application matches the datasheet...
Technically, grid-tied inverters operate at Unity Power Factor, i.e. "the same
PF the grid is giving it". But "Unity" is not a number, percentage or otherwise.
I used to put it on applications back in the day, just to be ornery.
</SPAN></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=484580018-21042009></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=484580018-21042009>Good luck!</SPAN></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=484580018-21042009></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=484580018-21042009>Matt Lafferty</SPAN></SPAN></P></DIV></BODY></HTML>