 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
finn.lassen(at)verizon.ne
Guest
|
 Posted: Fri Oct 04, 2024 4:49 am Post subject: O/Vprotection for internally regulated alternator |
 |
|
I switched to that configuration in my efforts to solve my electrical
glitches.
You put the relay in series with the B+ lead.
The relay coil is powered by a breaker and the crowbar is across the
relay coil. The breaker can be as little as 1 Amp because the circuit
now only powers the relay, instead of the field winding in the alternator.
If the crowbar senses an over-voltage spike it triggers and shorts the
relay coil voltage to ground (making the breaker pop) and the relay opens.
I think Bob has reported as much as 160V output from a runaway
alternator, so the relay contacts should probably be rated for that
voltage as well as the amps the generator can normally deliver.
Finn
On 10/3/2024 11:51 PM, 1rv4 wrote:
| Quote: |
Hi
I seem to remember there was a crowbar type overvoltage protection device for internaly regulated alternators. It had a relay to disconnect the B-lead. Can anyone shed some light on this or maybe I had a bad dream?
Thanks
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=513852#513852
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
|
|
|
| Back to top |
|
 |
chaskuss(at)yahoo.com
Guest
|
| Posted: Mon Oct 07, 2024 8:12 am Post subject: O/Vprotection for internally regulated alternator |
|
|
Kitplanes and other Publications have articles on how to convert a Nipondenso internally regulated alternator to external regulation. Considering that this is available and that the majority of the replacement alternator parts for internally regulated alternators are made in China and the third world, why would you want an internally regulated alternator?
Yahoo Mail: Search, Organize, Conquer
| Quote: | On Sat, Oct 5, 2024 at 11:39 PM, Charlie England
<ceengland7(at)gmail.com> wrote:
The older regulators in IR alternators often didn't have 'load dump' protection. People were 'testing' their OV modules with the alternator under load, and the resulting voltage spike when the relay opened would kill the internal regulator. So instead of invoking the HeHaw Doctor principle (if it hurts when you do that, don't do that), the recommendation became, don't use IR alternators.
Get BlueMail for Android
On Oct 5, 2024, at 11:43 AM, 1rv4 <fconsult(at)telus.net (fconsult(at)telus.net)> wrote:
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
|
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
