Matronics Email Lists :: View topic - Z-12 Master switch question

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Z-12 Master switch question

Matronics Email Lists Forum Index -> AeroElectric-List

View previous topic :: View next topic

Author Message

BuckWynd

Joined: 27 Nov 2007
Posts: 10

Posted: Sun Aug 23, 2009 11:21 pm Post subject: Z-12 Master switch question

I was studying various Z diagrams over the last several weeks and noticed that the Z-12 diagram has a single DPDT switch to control the main electrical system. It has a single switch instead of a split-type master switch like you see in Cessnas. With no Alternator Field switch, are there times with a Z-12 system when one might wish for a split switch, or two seperate switches? How is this system different from the electrical systems on most factory-built aircraft that separate the functions?



Thanks in advance for educating me.



Buck

- 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

_________________
Buck Wyndham
RV-8 N18XL (working on fuselage & systems)
Northern Illinois

nuckolls.bob(at)aeroelect
Guest

Posted: Mon Aug 24, 2009 5:47 am Post subject: Z-12 Master switch question

At 02:21 AM 8/24/2009, you wrote:

 	  Quote: 	
		  



I was studying various Z diagrams over the last several weeks and 

noticed that the Z-12 diagram has a single DPDT switch to control 

the main electrical system. It has a single switch instead of a 

split-type master switch like you see in Cessnas. With no Alternator 

Field switch, are there times with a Z-12 system when one might wish 

for a split switch, or two seperate switches? How is this system 

different from the electrical systems on most factory-built aircraft 

that separate the functions?



Thanks in advance for educating me.


	




    The S700-2-10 switch (B&C p/n) shown in the

    Z-figures is a progressive transfer switch

    that emulates the split rocker used on many

    type certificated single-engine airplanes.

    See chapter on switches in the 'Connection



    Alternatively, one may consider a simple double

    pole, double throw switch to bring battery and

    field on together. In this case, pulling the

    breaker (required for crowbar ov protection

    system) disables the alternator field path

    when the DC power switch is on for extended

    periods of time with the engine not

    running.

        Bob . . .



         ---------------------------------------

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

         ---------------------------------------

- 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

Display posts from previous:

	Matronics Email Lists Forum Index -> AeroElectric-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

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