Today's Message Index:
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1. 08:49 AM - Re: Switched voltage generator (Paul Eckenroth)
2. 09:50 AM - Re: Master and Starter Contactors wiring ("In and out" (fasilpereira)
3. 10:17 AM - Re: Master and Starter Contactors wiring ("In and out" (fasilpereira)
4. 12:23 PM - Re: Re: Switched voltage generator (skywagon185guy)
5. 02:36 PM - Re: Switched voltage generator (Paul Eckenroth)
6. 06:03 PM - Re: Switched voltage generator (user9253)
Message 1
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| Subject: | Re: Switched voltage generator |
Thanks Joe. Is this a switching type of regulator. My original stator burned
up due to heat generated and I want to make sure I don't repeat this. It is my
understanding that the shunt type regulator works by grounding the generator
when the needs of the battery are fulfilled. This has to add to the heat produced
by the generator which is a real problem for the Revmaster stator. I am
hoping that a switching type regulator will keep the stator cooler.
Paul
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=507184#507184
Message 2
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| Subject: | Re: Master and Starter Contactors wiring ("In and out" |
Thank you Joe, I'm going that way!
Fabricio
--------
Fabricio Pereira
Engineer / Pilot
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=507185#507185
Message 3
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| Subject: | Re: Master and Starter Contactors wiring ("In and out" |
Bob and Joe,
Thank you for confirming I can wire it reversed.
I'm attaching a picture of how it is going to look like.
The Master solenoid wiring has been adjusted to receive the battery on the right
terminal (I have moved the red wire from the left to the right terminal and
the diode remained untouched).
Bob, I'm not sure if the ACS Stater Solenoid has an internal diode, but I'm already
planning on installing an external one. I just don't have one with me right
now but I'll install one before powering up the system.
Regarding the battery cables, I'm planning to buy the 4 AWG welding cables pre-assembled
by B&C as soon as I define the system layout and can take the length
measurements. I decided that after reading your recommendations on your great
book!
Unfortunately the 4 AWG Starter and the 6 AWG Alternator and main buss feed cables
were already made of aircraft grade wires and I'll probably leave it that
way.
Thanks again for the help and tips,
Fabricio
--------
Fabricio Pereira
Engineer / Pilot
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=507186#507186
Attachments:
http://forums.matronics.com//files/contactors_389.jpg
Message 4
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| Subject: | Re: Switched voltage generator |
Stator Burn up.....
Some of the newer chemistry batteries have such low internal resistance
that they can "take" huge amounts of charging amps from the alternator at
engine idle; low rpms.
Most alternators are built to supply fairly low amperage at idle BUT are
capable of putting out large amounts if the external load is very low
resistance.
The problem; The alternator is mainly cooled by air driven by its built-in
fan system. At idle, the heat generated by high amps is greater than the
air flow can handle. Thus, items inside the unit start to overheat and fail.
So, just beware if you are using a battery of this type.....
PS: there are special alternators and regulators that are designed to
handle this sort of charging situation....
On Mon, Jun 13, 2022 at 8:51 AM Paul Eckenroth <jeckenroth@nbn.net> wrote:
> jeckenroth@nbn.net>
>
> Thanks Joe. Is this a switching type of regulator. My original stator
> burned up due to heat generated and I want to make sure I don't repeat
> this. It is my understanding that the shunt type regulator works by
> grounding the generator when the needs of the battery are fulfilled. This
> has to add to the heat produced by the generator which is a real problem
> for the Revmaster stator. I am hoping that a switching type regulator will
> keep the stator cooler.
>
> Paul
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=507184#507184
>
>
Message 5
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| Subject: | Re: Switched voltage generator |
I am aware of the Lithium battery low resistance situation but also believe that
the regulator must add to the problem. If, as I believe, the shunt regulator
shunts to ground when the charge of the battery is satisfied then that action
should be as much or more of a problem than the low resistance battery. Thus
my search for a non shunt regulator that can handle the rigors of flight. If
you know of special regulators that are made for this purpose please send me
details. Also if my understanding of the shunt regulator is faulty, please correct
me. Thanks.
Paul
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=507188#507188
Message 6
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| Subject: | Re: Switched voltage generator |
My John Deere regulator is a switching type. The outside air temperature was 80
F when I flew Saturday, 3 days ago.
There is a thermocouple on my voltage regulator. Its temperature is displayed
on the Dynon D-180.
The highest voltage regulator temperature Saturday was 151 F.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=507189#507189
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