REFLECTOR:Alternator wiring

Donald Royer reflector@tvbf.org
Wed, 30 Apr 2003 18:28:17 -0600


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I got my alternator a few years ago from the good people at NU AVIATION =
(Brian and his Mom). It came with a relay and an overvoltage sensor. It =
also came with instructions. The green wire is the alternator field and =
the yellow wire is for an idiot light on the panel. The overvoltage =
sensor and the relay go in the field circuit. Apparently the overvoltage =
sensor is a backup for the voltage regulator. When overvoltage sensor =
senses an overvoltage, it opens the relay.

Don
  ----- Original Message -----=20
  From: Hiroo Umeno=20
  To: reflector@tvbf.org=20
  Sent: Tuesday, April 29, 2003 2:19 PM
  Subject: REFLECTOR:Alternator wiring


  Here I am, still doing wiring.



  My alternator I got from Franklin guys in CO got me scratching my =
head.  Many of the airplane wiring references refer to three major =
connections to the alternator.  Airframe GND, Alternator Field, and =
Alternator Out.



  Now, as I look at my alternator, there appears to be four connections. =
 One is the GND which essentially is the casing bolted down to the =
engine.  Then there is a terminal that is marked with '+' symbol that I =
figured is the OUT judging from the size of the bolt and nut on the =
terminal.  Now, on the side, there is a plastic connector that has two, =
yes two, wires coming out.  One is yellow and the other is green.  They =
are marked 'S' and 'L'.  I am guessing one of them is the 'Field' but =
which one?



  Has anyone got this figured out?



  Hiroo


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<BODY lang=3DEN-US vLink=3Dpurple link=3Dblue bgColor=3D#ffffff>
<DIV><FONT size=3D2>I got my alternator a few years ago from the good =
people at NU=20
AVIATION (Brian and his&nbsp;Mom). It came with a relay and an =
overvoltage=20
sensor. It also came with instructions. The green wire is the alternator =
field=20
and the yellow wire is for an idiot light on the panel. The overvoltage =
sensor=20
and the relay go in the field circuit. Apparently the overvoltage sensor =
is a=20
backup for the voltage regulator. When&nbsp;overvoltage sensor senses an =

overvoltage, it opens the relay.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>Don</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Dhumeno@microsoft.com =
href=3D"mailto:humeno@microsoft.com">Hiroo=20
  Umeno</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dreflector@tvbf.org=20
  href=3D"mailto:reflector@tvbf.org">reflector@tvbf.org</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Tuesday, April 29, 2003 =
2:19=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> REFLECTOR:Alternator=20
wiring</DIV>
  <DIV><BR></DIV>
  <DIV class=3DSection1>
  <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">Here I am, still doing=20
  wiring&#8230;</SPAN></FONT></P>
  <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT>&nbsp;</P>
  <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">My alternator I got from =

  </SPAN></FONT><FONT face=3DArial size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial">Franklin</SPAN></FONT><FONT=20
  face=3DArial size=3D2><SPAN style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"> guys in=20
  CO got me scratching my head.&nbsp; Many of the airplane wiring =
references=20
  refer to three major connections to the alternator. &nbsp;Airframe =
GND,=20
  Alternator Field, and Alternator Out.</SPAN></FONT></P>
  <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT>&nbsp;</P>
  <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">Now, as I look at my =
alternator,=20
  there appears to be four connections.&nbsp; One is the GND which =
essentially=20
  is the casing bolted down to the engine.&nbsp; Then there is a =
terminal that=20
  is marked with &#8216;+&#8217; symbol that I figured is the OUT =
judging from the size of=20
  the bolt and nut on the terminal.&nbsp; Now, on the side, there is a =
plastic=20
  connector that has two, yes two, wires coming out.&nbsp; One is yellow =
and the=20
  other is green.&nbsp; They are marked &#8216;S&#8217; and =
&#8216;L&#8217;.&nbsp; I am guessing one of=20
  them is the &#8216;Field&#8217; but which one?</SPAN></FONT></P>
  <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT>&nbsp;</P>
  <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">Has anyone got this =
figured=20
  out?</SPAN></FONT></P>
  <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT>&nbsp;</P>
  <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial">Hiroo</SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HTML>

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