AEI/Beacon M5 Fireworks II [RE-wrenches]

[Matt Tritt]

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  David,

  Could you contact me off-list about wind stuff?

  Matt T
  ----- Original Message ----- 
  From: "David Blittersdorf" <davidb at nrgsystems.com>
  To: <RE-wrenches at topica.com>
  Sent: Wednesday, September 08, 2004 12:18 PM
  Subject: RE:AEI/Beacon M5 Fireworks II [RE-wrenches]




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  My company designs wind measurement equipment which includes
  microprocessor based instrumentation. We installed 2 of the GC-1000
  inverters on our building and had multiple failures.

  The tolerance problems in design could have caused the funky-ness.  Any
  good engineering works through all the tolerances and makes sure the
  equipment works with extremes.  AEI just plain and simple did a poor
design
  job. Their high failure rates caused their going out of business. Quality
is
  designed in and can not be tested out.

  High failure rates in the field is one of the fastest ways to go out of
business.

  David Blittersdorf

  On 8 Sep 2004 at 14:11, Geoff Greenfield wrote:
  >
  > I'm glad my feeling of being "burned" by AEI was not so literal - yikes!
  >
  > After dealing with many failed GC-1000 units and nice but frustrated
tech
  > support at AEI, one bit of info seems appropriate -  One guy explained
that a
  > lot of the difficulties they had were related to the "contract
manufacturing"
  > that actually put the product together (they subbed it out). They would
have
  > specs for the electronic components, even by manufacturer, and all of
these
  > would have an acceptable "tolerance". He said that while things would
work well
  > on the bench, but as the manufacturing process went on, some of the
boards used
  > different components, and the combination of the different "range" of
different
  > components all added up to funky-ness...
  >
  > I don't know if this is typical of electronics manufacturing, (or if it
was the
  > excuse of the day), but it would seem like a good basic question (for
Beacon and
  > any manufacturer) how much of the manufacturing/assembly do you actually
do, and
  > how do you address quality control on the rest of it?
  >
  > Sincerely,
  >
  > Geoff Greenfield
  > NABCEP Certified Solar PV Installer TM
  > GLREA Certified Photovoltaic Systems Integrator/Installer License Number
  > 0211-01
  David Blittersdorf
  NRG Systems, Inc.
  110 Riggs Road
  Hinesburg, VT 05461 USA
  Tel: 802-482-2255
  email: davidb at nrgsystems.com
  Web:http://www.nrgsystems.com

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