Today's Message Index:
----------------------
1. 07:05 AM - Re: Where to find closed-end lugs for Super-CCA cable (Eric M. Jones)
2. 07:42 AM - Re: breaker specs (Ron Quillin)
3. 08:02 AM - Re: breaker specs (Jay Hyde)
4. 09:54 AM - Re: breaker specs (Joe Ronco)
5. 11:25 AM - Re: Heavy Duty E-Bis Diode (Eric M. Jones)
6. 03:42 PM - Does the Alternator shut down if battery power is removed? (MauleDriver)
7. 08:29 PM - Re: 12/24V systems12/24V systems (D Fritz)
8. 09:12 PM - Re: breaker specs (B Tomm)
9. 09:37 PM - Re: 12/24V systems12/24V systems (n801bh@netzero.com)
Message 1
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| Subject: | Re: Where to find closed-end lugs for Super-CCA cable |
You can get the closed end version from marine supply:
http://www.boatersworld.com/product/199323221msk.htm
The "Super-2-CCA" takes a 1/0 AWG (one-aught) connector and the "Super-4-CCA"
take a 2 AWG connector, because CCA cable is slightly larger than the copper sizes.
I have been selling a lot of this CCA cable recently, and SteinAir is distributing
the Super-2-CCA.
We sell a lot of this in custom sizes to NASCAR and Indy racers, as well as some
military aircraft builders. The Tesla electric car also uses it. The NASCAR
guys are super-secretive about the material--demanding no markings on the insulation
or on the spools!
"...Beans for supper tonight, six o'clock.
Navy beans cooked in Oklahoma ham...
Got to eat 'em with a spoon, raw onions
and cornbread; nothing else...."
--Will Rogers
--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones@charter.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=217478#217478
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| Subject: | Re: breaker specs |
Try here:
http://www.sensata.com/
Ron Q.
At 22:35 12/2/2008, you wrote:
>Bob, et al
>
>I'm trying to educate myself about circuit breakers (Klixon in this
>case). I can't find any tech info online, nor any sales info from
>Mouser, Digi-key, Electronic etc. Can you suggest a source?
Message 3
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Just as a general note on electrical protection; the trip times that you
mention for such an overload (in the region of 150-250%) are perfectly
acceptable; an overload condition should not produce a quick response, but
allow the system time to shed the overload if it is a transient condition
(starting for example). If there is a fault that generates a high current
then the protection element (cct breaker) should trip much faster.
In large power electrical systems this is called an IDMT characteristic
(Inverse Definite Mean Time); in a small CB this characteristic is attained
by use of a bi-metallic strip that heats up slowly during an overload; once
past a certain limit the circuit is opened using clever spring thingie
arrangements.. ;-) When a large current is passed the strip heats a lot
faster causing the faster trip.
The circuit that you are feeding should be able to handle the overload
condition for that period of time without damage, itll just heat up.
Incidentally, that is why there is an earth (or ground) in electrical
systems- it is there to create a defined return path to the power source
that will create a good solid and DETECTABLE fault. Once detected it can be
cleared. Thats another reason to make sure that metal skins are well
bonded (electrically- that is, they are electrically continuous) in an
aircraft, so that if a positive wire rubs through somewhere it must find a
good return path to the negative terminal of the battery as soon as
possible. That way the fault can be detected and isolated by your cleverly
designed reticulation system and fuses/ breakers :-)
Fuses have similar characteristics; they also rely on heat generated by
conducted current..
Jay
________________________________________
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of B Tomm
Sent: 03 December 2008 08:36 AM
Subject: AeroElectric-List: breaker specs
Bob, et al
I'm trying to educate myself about circuit breakers (Klixon in this case).
I can't find any tech info online, nor any sales info from Mouser, Digi-key,
Electronic etc. Can you suggest a source?
I'm beginning to think Klixon is not a manufacture's name but just a product
name. Still, Ishould be able to find performance specs online though, no?
Relevance: Due to space and design goals, I am incorporating fuse
blocksand some breakers (Klixon) into my panel (RV7A). However, I have
just recently discovered another type of breaker that I'm sure you're aware
of, namely the switch/breaker, see
http://www.avionicsmall.com/index.php?main_page=product_info&cPath=189&prod
ucts_id=8161
This nifty puppy will save space by incorporating a switch and circuit
breaker into one unitat comparable cost to a switch and klixon breaker.
However, when reading the performance specs,(click on the data sheet tab
here http://www.mouser.com/Search/Refine.aspx?Keyword=655-W31-X2M1G-5)
it looks to be very slow acting at the current flows that we are dealing
with. I would think that we want an overload to be shut own within seconds
not minutes. Even at a response time of 10 seconds, the amount of overload
would have to be 150-250% of rated value ( I suppose dependant on ambient
temperature). I don't think this is acceptable for an aircraft, do you?
This is why I wonder what the Klixon's response times are. Maybe they are
no better. I'm pretty sure that an ATO type fuse will be lightning fast at
150% overload, no? I look forward to you comments.
Thanks
Bevan
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Message 4
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BEVAN: I don't know if this is what you are looking for but try this link.
http://www.sensata.com/products/controls/acb.htm
They also have a catalog that you can download.
Hope this helps.
Joe R
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of B Tomm
Sent: Tuesday, December 02, 2008 11:36 PM
Subject: AeroElectric-List: breaker specs
Bob, et al
I'm trying to educate myself about circuit breakers (Klixon in this case).
I can't find any tech info online, nor any sales info from Mouser, Digi-key,
Electronic etc. Can you suggest a source?
I'm beginning to think Klixon is not a manufacture's name but just a product
name. Still, I should be able to find performance specs online though, no?
Relevance: Due to space and design goals, I am incorporating fuse blocks
and some breakers (Klixon) into my panel (RV7A). However, I have just
recently discovered another type of breaker that I'm sure you're aware of,
namely the switch/breaker, see
http://www.avionicsmall.com/index.php?main_page=product_info
<http://www.avionicsmall.com/index.php?main_page=product_info&cPath=189&prod
ucts_id=8161> &cPath=189&products_id=8161
This nifty puppy will save space by incorporating a switch and circuit
breaker into one unit at comparable cost to a switch and klixon breaker.
However, when reading the performance specs, (click on the data sheet tab
here http://www.mouser.com/Search/Refine.aspx?Keyword=655-W31-X2M1G-5 )
it looks to be very slow acting at the current flows that we are dealing
with. I would think that we want an overload to be shut own within seconds
not minutes. Even at a response time of 10 seconds, the amount of overload
would have to be 150-250% of rated value ( I suppose dependant on ambient
temperature). I don't think this is acceptable for an aircraft, do you?
This is why I wonder what the Klixon's response times are. Maybe they are
no better. I'm pretty sure that an ATO type fuse will be lightning fast at
150% overload, no? I look forward to you comments.
Thanks
Bevan
Message 5
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| Subject: | Re: Heavy Duty E-Bis Diode |
> I'm putting together my Relay and just noticed that your Z 32 diagram for the
Heavy Duty E-Bus relay uses a IN4001 Diode. When I ordered my relay from B&C
a month or 2 ago, they supplied me with the IN5400 Diode which corresponds to
their diagram.....
> My question is: Is it critical that I use the IN4001 Diode for my Heavy
> Duty E-Bus configuration or can I use the 5400? Thanks, Henry
By the way....that's ONE N5400 not EYE N5400.
You should use bidirectional Zeners anyway....
--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones@charter.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=217509#217509
Message 6
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| Subject: | Does the Alternator shut down if battery power is removed? |
Given an alternator and an LR3 controller, with the engine running, will
the alternator shut down if the battery master is switched off?
I'm guessing that the alternator will continue to function normally
since it's still self-exciting the field line. Shutting down the
alternator would require pulling the field breaker.
Is that correct?
Thanks
Bill Watson
RV10 with a Z-14
Message 7
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| Subject: | Re: 12/24V systems12/24V systems |
Bob and Bruce,
Thanks for the helpful advice.
-
Ben,
This probably isn't the right forum for bashing your competition in engine
development and production.
-
dan=0A=0A=0A
Message 8
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Thanks for the replies. Exactly what I'm looking for.
Bevan
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Joe Ronco
Sent: Wednesday, December 03, 2008 9:53 AM
Subject: RE: AeroElectric-List: breaker specs
BEVAN: I don't know if this is what you are looking for but try this link.
http://www.sensata.com/products/controls/acb.htm
They also have a catalog that you can download.
Hope this helps.
Joe R
Message 9
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| Subject: | Re: 12/24V systems12/24V systems |
I Guess the key word there is "production".. <GG>
do not archive
Ben Haas
N801BH
www.haaspowerair.com
-- D Fritz <dfritzj@yahoo.com> wrote:
Bob and Bruce,Thanks for the helpful advice. Ben,This probably isn't the
right forum for bashing your competition in engine development and prod
uction. dan
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