On 29/09/2012 17:26, harry wrote:
On Sep 29, 4:03 pm, John Rumm wrote:
On 29/09/2012 10:50, Tim Streater wrote:









In article
,
harry wrote:

http://www.pvmips.org/publications/017.pdf

In case you don't understand, it means in 20 years there is a 96.5%
chance there will be no problem with a modern inverter. As mine is
installed in an ideal situation (ie cool, dry and dust free) I expect
it will be even more reliable than that.

So if you have 100 of them (I assume there's one in each turbine?) that
gives you about a 2.8% chance that there won't be a failure, or 97.2%
chance that there will.

100 turbines, that's what, about 5 wind farms or so?

Although on the bright side, since each one contributes the cube root of
FA most of the time, you might not notice ;-)


I expect you've got a link to verify this remark?


Here, have a pro wind site's version:

http://www.bwea.com/energy/rely.html

25% to 40%

The more poorly sited on shore ones do even less than that.

--
Cheers,

John.

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