Re: Brief trip report MEL-CBR-MEL and thoughts on 737 vs A320 cabins.

[matthew@mail.usyd.edu.au (Matthew Geier)]

In article <397DE4D0.EF433A5F@videotron.ca>,
JF Mezei  <jfmezei.spamnot@videotron.ca> wrote:
>Erwan David wrote:
>>         It is the same power system (25 kV 50Hz) than on half french
>> lines. However its not the same signaling system and contraints on the
>> track are harder.
>
>Sorry. But the first TGV line (Paris Lyons), each locomotive was equipped with
>2 pantographs and power systems. One for the high speed lines, and the other
>for the traditional lines. And during the switch-over from one to the other,
>it was evident inside the train because there was a period where there was
>only minimal power (no air conditioning etc, just lights).

 There are also 'phase breaks' in the AC overhead where the same thing
happens.


>Also, the Eurostar is also equipped with dual power systems because the
>british railways between Folkestone and London provide power on different
>voltage (as well as providing it on a third rail instead of overhead wires.

 3 or 4 power systems. 25k AC for the high speed, 1500DC for Paris, and
750VDC 3rd rail for England. May even have 3000VDC capablity for Belgum.
(Don't have doco on Eurostar handy)