nuckolls.bob(at)aeroelect
Guest
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 Posted: Thu Aug 20, 2020 7:53 am Post subject: Speaking of alternators . . . |
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At 09:50 PM 8/19/2020, you wrote:
| Quote: | | Quote: | Bob, thank you
I have read about this and hence affraid we should replace 60 Amps alternator with at least 70 Amps, or I understand this incorrectly?
but anyway such huge load is strange.
regaring secondary alternator - perheps we will do an upgrade later, as I am 100% feel the same as you |
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A requirement seldom if ever explored
in OBAM aviation is a demonstration of
suitability to task. I.e. will the machine
deliver design goal ratings to the system
under worst case conditions?
When seeking to validate a new install
a legacy 'stress' test calls for loading
the alternator to design limits (may not
be nameplate limits . . . some alternators
are purposely 'de rated'), climb the
airplane as best angle, monitor critical
temperatures in alternator (usually diodes
and one stator winding) until stabilized.
Adjust for standard hot-day and show that
the installation meets design goals without
overheating.
It's not possible to load an installed
alternator to design limits using ship's
accessories . . . we add current draw with an
adjustable load bank that lets us fully
challenge the alternator.
This is a load bank recently used to
validate a new STC on an alternator
installation.
This seems like an extreme measure given
that loading a qualified installation
to worst case for more than mere minutes
is practically impossible. But the test
proves that your properly functioning
alternator is meeting design goals.
Bob . . .
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