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l.p(at)talk21.com
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 Posted: Wed Sep 15, 2010 8:46 pm Post subject: Advice requested. |
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Bob.
Hope you can advise on the following:
My Long-EZ has Z-13 as the basis for it's electrics.
I had an issue yesterday of high over-voltage, 15.4 volts, while flying.
At the same time we had radio difficulties, mainly Tx.
Later I found that the "ess-buss alternative feed" switch was to "alternate"!
On switching this back to "normal", returned everything as it should have been.
Question: will this time of overvoltage, perhaps 30 mins or more, have caused any 'lasting' damage to any/all components of the electric system?
Any help much appreciated.
Patrick Elliott.
G-LGEZ
[quote][b]
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user9253
Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan
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| Posted: Thu Sep 16, 2010 4:07 am Post subject: Re: Advice requested. |
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Some devices will definitely have their lives shortened by excessive voltage. Let's hope the high voltage does not cause expensive devices to fail prematurely. There is nothing that you can do about the past. The important issue is how to prevent a future high voltage event. What good is the alternate voltage source if it can not be used without damaging the electrical system? The Aux voltage regulator must not be doing its job. Either it is faulty or else it is seeing a low voltage due to high resistance in the voltage-sense circuit or ground connection. Also, consider installing over voltage protection.
Joe
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