tim2542(at)sbcglobal.net
Guest
|
 Posted: Wed Jul 14, 2010 6:51 am Post subject: ANL current limiter location on rear battery installations |
 |
|
Bob; this question is similar to what I was asking a few days ago but I'm not sure we were on the same page, probably my fault. For example the Z8 I'm using does not show any protection device between the main bus and the contactor, in my case that is a 7'~8' run from the rear mounted battery to the Instrument panel where the main bus is located. The E bus is protected from both ends with fuses in your drawing and I understand why but do not understand why there is no protection on the feeder to the main bus/fuse block
Thanks, Tim Andres
From: tomcostanza <Tom(at)CostanzaAndAssociates.com>
To: aeroelectric-list(at)matronics.com
Sent: Wed, July 14, 2010 3:50:05 AM
Subject: Re: ANL current limiter location on rear battery installations
--> AeroElectric-List message posted by: "tomcostanza" <Tom(at)CostanzaAndAssociates.com (Tom(at)CostanzaAndAssociates.com)>
Thanks for that Bob. As often is the case, at least with me, the answer to one question leads to more questions.
| Quote: | Because fat wires in dc electrical systems are
exceedingly hard to burn, hence there is no
value added in attempting to protect them.
|
When you say "protect them", I'm not sure what you mean. Not knowing any better, I might want to protect things near the high current path, or the battery itself, from melting. Your thoughts?
| Quote: | Hence design goals and installation that suggest extra
attention to the insulation and support of fat wires combined
with a crew-controlled shut-off right at the battery
i.e. battery contactor.
|
Got it. But again, another question, this time about the wire supplying the main battery buss, for example in Z-11. This is neither fused, nor does it go through the contactor. So it isn't shut-off-able. What's the worst case if this shorts to ground. Will the wire just burn through as if it were a fuseable link? What if someone used a heavier wire, anticipating a more robust e-bus?
Please pardon my ignorance, and thanks so much for your patience.
--------
Clear Skies,
Tom Costanza
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=304740#304740
http://www.matronics.com/Navigator?AeroElec= Same great content also available via the -Matt Dralle, List Admin.<=====
[quote][b]
| | - 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 |
|
|
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
