Re: [Insert other state here] Airport lines

[Colin Weaver <weaver@powerup.com.au>]

I found the following references to dual voltage light rail / heavy rail
integration on the Light Rail Transit Association (UK) web site
(http://www.lrta.org).  Both talk about the dual voltage system in
Saarbrucken, Germany, with references to an earlier application of the
same technology in Karlsruhe.

http://www.lrta.org/facts46.html
http://www.lrta.org/facts65.html
http://www.lrta.org/facts90.html

As to the electrical details - I'll leave that to an expert to answer, I
know nothing!

--Colin

Brown Family wrote:
> 
> On Sat, 27 May 2000 20:03:22 +1000, Colin Weaver
> <weaver@powerup.com.au> wrote:
> 
> >Feasible.  In Germany (Karlsruhe) there is light rail which shares
> >infrastructure with high voltage AC heavy rail (25KV or ~16KV), and can
> >also run under 750V DC.
> >
> How is this done?
> 
> Unless you run 47 of them in series together (25KV), some form of
> collection power attentuation must kick in pretty fast before you
> savage the semiconductors. Even some form of PWM couldn't possibly
> react fast enough.
> 
> Les Brown
> 
> Freedom's just another word for nothin' left to lose.