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Re: [a-w-h] Whisper H40 EZ-Wire trouble

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  • Jaime DeLage
    Mike,That s why I was hoping to use the EZ 200 with the H80 instead of the standard EZ 120. I m not quite as handy an electrical engineer as most of this
    Message 1 of 1 , Sep 30, 2001
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      That's why I was hoping to use the EZ 200 with the H80 instead of the standard EZ 120. I'm not quite as handy an electrical engineer as most of this crowd. Oh well, I guess if my EZ 120 burns out I can always schedule a visit so you can teach me how to repair/customize it.


      -----Original Message-----
      From: Michael Klemen <windy@...>
      Date: Fri, 28 Sep 2001 21:39:09 -0500
      To: awea <awea-wind-home@yahoogroups.com>
      Subject: [a-w-h] Whisper H40 EZ-Wire trouble

      > <html><body>
      > <tt>
      > Hi,<BR>
      > <BR>
      > I am just letting you all know I've had a rectifier <BR>
      > failure in my H40 EZ-Wire.  There is no smoke.  No<BR>
      > burned wires.  Nothing turned black.  There is nothing <BR>
      > spectacular about the failure.  The machine appeared <BR>
      > braked in a 10 mph+ wind, so I checked it out.  It's<BR>
      > been in service for about 2.5 years.<BR>
      > <BR>
      > One of the rectifiers is history.  We've constantly <BR>
      > had problems with the FET block burning out because it <BR>
      > was not heatsinked well enough.  Now, the rectifiers <BR>
      > are going...probably for the same reason.<BR>
      > <BR>
      > I haven't decided what I will do with the unit.  <BR>
      > I can send it back to SWP for them to fix it, however,<BR>
      > unless they change something in the heat transfer, it<BR>
      > appears likely to happen again...maybe in another 2.5 <BR>
      > years, but I don't think I want to mess with it again<BR>
      > then.  I can replace the rectifiers myself, probably <BR>
      > much cheaper than if I send it back.  My other options <BR>
      > would be to modify it like I modified the Whisper 80 <BR>
      > EZ-Wire, or to make a better, safer modification to <BR>
      > enhance the heat sinking.  <BR>
      > <BR>
      > What I did for the Whisper 80 EZ-Wire is generally not <BR>
      > safe, because the enclosure gets hot and becomes part<BR>
      > of the electrical circuit.  That's why I won't tell<BR>
      > you what I did-but I haven't fried a rectifier or<BR>
      > FET block on that unit in the last year, so I know <BR>
      > it works.  That's how I know that the issue is heat<BR>
      > transfer.  I may make a safer modification and <BR>
      > install a real heat sink.<BR>
      > <BR>
      > For those who don't get 20-30 mph winds all day long, <BR>
      > it will probably take MUCH longer for a failure like <BR>
      > this to occur.  It really isn't an expensive failure.  <BR>
      > I can replace the rectifier for probably $5.  It's just <BR>
      > a bother, that's all.  Since one failed, I will probably<BR>
      > replace all 3 just to be done with it.<BR>
      > <BR>
      > Sincerely,<BR>
      > Mike Klemen<BR>
      > <a href="http://www.ndsu.nodak.edu/ndsu/klemen">http://www.ndsu.nodak.edu/ndsu/klemen</a><BR>
      > </tt>
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