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Master / Starter Relay

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peter(at)sportingaero.com
Guest

Posted: Thu Apr 25, 2013 1:17 pm Post subject: Master / Starter Relay

Does anyone have any thoughts on the suitability of these devices from 

Tyco for our applications, although may be a little expensive (£70 = 

$110, both + tax)? How are they supposed to be mounted?



http://uk.farnell.com/te-connectivity/v23130c2021a412/relay-battery-disconnect-12v/dp/1770635



http://www.farnell.com/datasheets/477184.pdf



Looks like it already has diodes installed.

If the coil has a resistance of 4.7 ohms, will this pull 3 amps 

continuously?



Connector is here



http://uk.farnell.com/te-connectivity-amp/184046-1/housing-plug-ssc-a-key-4-way/dp/2309162?ref=lookahead



http://www.farnell.com/datasheets/1697200.pdf

Peter

peter(at)sportingaero.com
Guest

Posted: Thu Apr 25, 2013 1:38 pm Post subject: Master / Starter Relay

Perhaps this is better as a master relay - mounting lugs included, 

current draw is around 0.4A, cost is £50, $77



http://www.farnell.com/datasheets/1670678.pdf

On 25/04/2013 22:14, Peter Pengilly wrote:

 	  Quote: 	
		   

 <peter(at)sportingaero.com>



 Does anyone have any thoughts on the suitability of these devices from 

 Tyco for our applications, although may be a little expensive (£70 = 

 $110, both + tax)? How are they supposed to be mounted?



 http://uk.farnell.com/te-connectivity/v23130c2021a412/relay-battery-disconnect-12v/dp/1770635 

 http://www.farnell.com/datasheets/477184.pdf



 Looks like it already has diodes installed.

 If the coil has a resistance of 4.7 ohms, will this pull 3 amps 

 continuously?



 Connector is here



 http://uk.farnell.com/te-connectivity-amp/184046-1/housing-plug-ssc-a-key-4-way/dp/2309162?ref=lookahead 

 http://www.farnell.com/datasheets/1697200.pdf

 Peter

peter(at)sportingaero.com
Guest

Posted: Thu Apr 25, 2013 1:50 pm Post subject: Master / Starter Relay

2nd try, this is the 12v version, £62 = $96, requires 0.3A hold on current.



http://uk.farnell.com/te-connectivity/v23132a2001b200/relay-high-current-150a-12v/dp/2076581



Peter



On 25/04/2013 22:14, Peter Pengilly wrote:

 	  Quote: 	
		   

 <peter(at)sportingaero.com>



 Does anyone have any thoughts on the suitability of these devices from 

 Tyco for our applications, although may be a little expensive (£70 = 

 $110, both + tax)? How are they supposed to be mounted?



 http://uk.farnell.com/te-connectivity/v23130c2021a412/relay-battery-disconnect-12v/dp/1770635 

 http://www.farnell.com/datasheets/477184.pdf



 Looks like it already has diodes installed.

 If the coil has a resistance of 4.7 ohms, will this pull 3 amps 

 continuously?



 Connector is here



 http://uk.farnell.com/te-connectivity-amp/184046-1/housing-plug-ssc-a-key-4-way/dp/2309162?ref=lookahead 

 http://www.farnell.com/datasheets/1697200.pdf

 Peter

jan(at)CLAVER.DEMON.CO.UK
Guest

Posted: Thu Apr 25, 2013 2:06 pm Post subject: Master / Starter Relay

Very modern and expensive (We use Tyco at work ..all good stuff) ... but

what is wrong with $ 20,- from Vans ?



http://www.vansaircraft.com/cgi-bin/store.cgi?ident=1366927288-350-189&brows

e=electrical&product=master-sw



Jan



--

Eric M. Jones

Joined: 10 Jan 2006
Posts: 565
Location: Massachusetts

Posted: Fri Apr 26, 2013 4:37 am Post subject: Re: Master / Starter Relay

 	  Quote: 	
		  Very modern and expensive We use Tyco at work ..all good stuff ... but 

what is wrong with $ 20,- from Vans? 	




The $20 Type 70 contactor has been used for years. It might be okay for some applications, but there have been great strides in designing contactors. I often recommend the Kilovac EV200, the Gigavac GX-11, or NO CONTACTORS AT ALL (Use a remote battery switch from Flaming River) but there are many good choices.



The Type 70 is rated at 122 degress F, is not sealed, not fuel proof, G-sensitive, requires external diodes (use Bidir Zeners!) and is less than ideal in other respects. 



But it is cheap.

_________________
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net

bbradburry(at)bellsouth.n
Guest

Posted: Fri Apr 26, 2013 5:30 am Post subject: Master / Starter Relay

And has been used with no real problem in aircraft for about a hundred

years!

If you glue dollar bills to the sides of the fuselage, it will make the

fuselage a little stronger...  :>)



B2



--

holger-d(at)shadowbrush.c
Guest

Posted: Fri Apr 26, 2013 7:59 am Post subject: Master / Starter Relay

On Apr 26, 2013, at 6:29 AM, Bill Bradburry wrote:



 	  Quote: 	
		   If you glue dollar bills to the sides of the fuselage, it will make the

 fuselage a little stronger...  :>)


	




Interesting. From a structural standpoint, which bill is recommended: $1, $20, $50, ...? Probably the higher ones, you get what you pay for?



Holger



PS: Plugged my 40W LED landing light into the cigarette lighter on a flight the other day, and there was no RF noise. More tests needed.

nuckolls.bob(at)aeroelect
Guest

Posted: Fri Apr 26, 2013 8:39 am Post subject: Master / Starter Relay

At 04:14 PM 4/25/2013, you wrote:

 	  Quote: 	
		  

Pengilly <peter(at)sportingaero.com>



Does anyone have any thoughts on the suitability 

of these devices from Tyco for our applications, 

although may be a little expensive (£70 = $110, 

both + tax)? How are they supposed to be mounted?



http://uk.farnell.com/te-connectivity/v23130c2021a412/relay-battery-disconnect-12v/dp/1770635


	


   This is a BI-STABLE relay. Energize one coil to close

   it; energize the other coil to open it. This calls

   for a new paradigm in battery master switches.



   It's a fine product. My first question would explore

   expected return on investment for the purchase and installation

   of such a device.



   Bob . . .

nuckolls.bob(at)aeroelect
Guest

Posted: Fri Apr 26, 2013 8:41 am Post subject: Master / Starter Relay

At 04:14 PM 4/25/2013, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: Peter Pengilly <peter(at)sportingaero.com>



 Does anyone have any thoughts on the suitability of these devices from Tyco for our applications, although may be a little expensive (£70 = $110, both + tax)? How are they supposed to be mounted?



  http://uk.farnell.com/te-connectivity/v23130c2021a412/relay-battery-disconnect-12v/dp/1770635 	


   This is a BI-STABLE relay. Energize one coil to close

   it; energize the other coil to open it. This calls

   for a new paradigm in battery master switches.



   It's a fine product. My first question would explore

   expected return on investment for the purchase and installation

   of such a device.



   P.S.  This product would perform well as a BATTERY contactor

   but poorly as a STARTER contactor.

   



 

 

   Bob . . .     [quote][b]

bicyclop(at)pacbell.net
Guest

Posted: Fri Apr 26, 2013 8:53 am Post subject: Master / Starter Relay

The linen in them might make for a decent phenolic, properly laminated. 

I don't think the denomination will matter much. 

Ed

On 4/26/2013 8:57 AM, Holger Selover-Stephan wrote:

 	  Quote: 	

 On Apr 26, 2013, at 6:29 AM, Bill Bradburry wrote:

> If you glue dollar bills to the sides of the fuselage, it will make the

> fuselage a little stronger...  :>)

 Interesting. From a structural standpoint, which bill is recommended: $1, $20, $50, ...? Probably the higher ones, you get what you pay for?

 Holger

 PS: Plugged my 40W LED landing light into the cigarette lighter on a flight the other day, and there was no RF noise. More tests needed.

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