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jason.rouault(at)hp.com
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 Posted: Mon Dec 10, 2007 7:05 am Post subject: 20 Amp Solid State Relay usage |
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Bob,
I am interested in the new 20 amp solid state relay shown on the Aeroelectric site. Here is my application:
The switches I will be using in my panel will be Honeywell AML34 series. These are 15 amp switches offered in single pole and dual pole but with only 2 positions. These will work great for the majority of my needs, but I do want a couple 3 position switches for the fuel pump (off-on-auto) and landing lights (off-on-pulse). Honeywell offers a AML24 series (same physical size and looks as the 34) switch that comes with 3 positions, however, the amp rating is less than 5 amps. I have not been able to get good documentation one the AML24 switch rating, but what I have seen is anywhere from 1 to 3 amps. So, I was wondering if using this switch with the 20 amp relay would be a good match for what I want to achieve? Also, does a single relay have the ability to work with more than one switch?
Thanks in advance for your help,
Jason
[quote][b]
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nuckolls.bob(at)cox.net
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| Posted: Mon Dec 10, 2007 8:55 am Post subject: 20 Amp Solid State Relay usage |
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At 02:55 PM 12/10/2007 +0000, you wrote:
| Quote: | Bob,
I am interested in the new 20 amp solid state relay shown on the
Aeroelectric site. Here is my application:
The switches I will be using in my panel will be Honeywell AML34
series. These are 15 amp switches offered in single pole and dual pole
but with only 2 positions. These will work great for the majority of my
needs, but I do want a couple 3 position switches for the fuel pump
(off-on-auto) and landing lights (off-on-pulse). Honeywell offers a AML24
series (same physical size and looks as the 34) switch that comes with 3
positions, however, the amp rating is less than 5 amps. I have not been
able to get good documentation one the AML24 switch rating, but what I
have seen is anywhere from 1 to 3 amps.
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Yes, I believe those are much more limited . . . and
yes, the AEC9030 was crafted specifically for "boosting"
those nifty but somewhat limited switches.
| Quote: | So, I was wondering if using this switch with the 20 amp relay would be
a good match for what I want to achieve?
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I believe so.
| Quote: | Also, does a single relay have the ability to work with more than one
switch?
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Not sure what you're asking. What's the application?
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
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sshook(at)cox.net
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| Posted: Mon Dec 10, 2007 1:37 pm Post subject: 20 Amp Solid State Relay usage |
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I too am using the AML34 and AML24 switches in my panel. Pacific Coast
Avionics recommended using the Potter Brumfield VF4-65F11 relays for higher
loads.
Any thoughts on these relays Bob? Are they reliable enough?
Scott R. Shook
RV-7A (Building)
N696JS (Reserved)
--
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umgibso1(at)yahoo.com
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| Posted: Tue Dec 11, 2007 5:43 pm Post subject: 20 Amp Solid State Relay usage |
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Hi everyone, if applicable I'd also like to use this relay for switching an electric heater... a 35A forced air infra-red quartz unit from Aircraft Spruce.
It says the contacts of the VF4-65F11 are rated for 40A?
http://www.chiptech.com/secondary/manu-prod_pdf/P/Potter&Brumfield.pdf
Since it's offered with quick connect terminals I'm assuming fast-ons would be OK to use here? Thanx for any help,
Tony Gibson
Winnipeg, Manitoba
From: "Scott R. Shook" <sshook(at)cox.net>
Subject: RE: 20 Amp Solid State Relay usage
I too am using the AML34 and AML24 switches in my panel. Pacific Coast
Avionics recommended using the Potter Brumfield VF4-65F11 relays for
higher
loads.
Any thoughts on these relays Bob? Are they reliable enough?
Scott R. Shook
RV-7A (Building)
N696JS (Reserved)
[quote][b]
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schaefer(at)rts-services.
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| Posted: Tue Dec 11, 2007 8:49 pm Post subject: 20 Amp Solid State Relay usage |
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| Quote: | Hi everyone, if applicable I'd also like to use this relay for switching
an electric heater... a 35A forced air infra-red quartz unit from Aircraft
Spruce.
It says the contacts of the VF4-65F11 are rated for 40A?
http://www.chiptech.com/secondary/manu-prod_pdf/P/Potter&Brumfield.pdf
Since it's offered with quick connect terminals I'm assuming fast-ons
would be OK to use here? Thanx for any help,
Tony Gibson
Winnipeg, Manitoba
From: "Scott R. Shook" <sshook(at)cox.net>
Subject: RE: 20 Amp Solid State Relay usage
I too am using the AML34 and AML24 switches in my panel. Pacific Coast
Avionics recommended using the Potter Brumfield VF4-65F11 relays for
higher
loads.
Any thoughts on these relays Bob? Are they reliable enough?
Scott R. Shook
RV-7A (Building)
N696JS (Reserved)
---------------------------------
Never miss a thing. Make Yahoo your homepage.
That type of heater will likely be classified as a resistive load so you
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should not have a problem if the relay was set to switch 40A loads.
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bakerocb
Joined: 15 Jan 2006
Posts: 727
Location: FAIRFAX VA
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| Posted: Wed Dec 12, 2007 6:08 am Post subject: 20 Amp Solid State Relay usage |
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12/12/2007
Hello Tony, I have one of these units in my KIS TR-1 airplane.
http://www.dcthermal.qpg.com/
If you have not already purchased it you may want to reconsider.
Mine puts out about the same amount of heat as waving a lighted cigarette
around in the cockpit. It may help a bit if your cockpit is sealed really
tight against outside airflow -- not that easy to accomplish.
It also generates background static during radio receptions. I would not
purchase one again.
Instead I would consider either heated clothing or seats -- plenty of
options available there. Some examples:
http://www.gerbing.com/
http://www.heatedseatkits.com/heatedseatkits/index.html
'OC' Says: "The best investment we can make is the effort to gather and
understand knowledge."
-------------------------------------------------------------
Time: 05:43:08 PM PST US
From: Tony Gibson <umgibso1(at)yahoo.com>
Subject: 20 Amp Solid State Relay usage
Hi everyone, if applicable I'd also like to use this relay for switching an
electric
heater... a 35A forced air infra-red quartz unit from Aircraft Spruce.
It says the contacts of the VF4-65F11 are rated for 40A?
http://www.chiptech.com/secondary/manu-prod_pdf/P/Potter&Brumfield.pdf
Since it's offered with quick connect terminals I'm assuming fast-ons
would be
OK to use here? Thanx for any help,
Tony Gibson
Winnipeg, Manitoba
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nuckolls.bob(at)cox.net
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| Posted: Wed Dec 12, 2007 7:42 am Post subject: 20 Amp Solid State Relay usage |
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At 09:07 AM 12/12/2007 -0500, you wrote:
| Quote: |
12/12/2007
Hello Tony, I have one of these units in my KIS TR-1 airplane.
http://www.dcthermal.qpg.com/
If you have not already purchased it you may want to reconsider.
Mine puts out about the same amount of heat as waving a lighted cigarette
around in the cockpit. It may help a bit if your cockpit is sealed really
tight against outside airflow -- not that easy to accomplish.
It also generates background static during radio receptions. I would not
purchase one again.
Instead I would consider either heated clothing or seats -- plenty of
options available there. Some examples:
http://www.gerbing.com/
http://www.heatedseatkits.com/heatedseatkits/index.html
'OC' Says: "The best investment we can make is the effort to gather and
understand knowledge."
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Agreed. The only 24V LongEz I've ever assisted with
had a 100A alternator on it. 3 amps to run the airplane,
97 amps to run the 2000W cabin heater. Yeah, it extended his
cold-weather flying season a few weeks in the fall and
opened it a few weeks earlier in the spring . . . but
it didn't do the back seater a bit of good and the
$time$ to acquire, install and carry this system around
in the airplane was SIGNIFICANT.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
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nuckolls.bob(at)cox.net
Guest
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| Posted: Fri Dec 21, 2007 4:42 pm Post subject: 20 Amp Solid State Relay usage |
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At 02:34 PM 12/10/2007 -0700, you wrote:
| Quote: |
I too am using the AML34 and AML24 switches in my panel. Pacific Coast
Avionics recommended using the Potter Brumfield VF4-65F11 relays for higher
loads.
Any thoughts on these relays Bob? Are they reliable enough?
|
"Reliable enough" isn't quantifiable . . . if you use
them with failure tolerant design in mind, then any
component demonstrating a service life commensurate with
your $time$ to acquire/install/maintain will have no
serious effect on system reliability, only a
cost of ownership consideration.
The plastic automotive power relays are in widespread
usage throughout the industry. Chances are that
they're entirely suited to your task of crafting
the failure tolerant system.
Bob . . .
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