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Re: High Speed Trains in Australia

To: ausrail@railpage.org.au
Subject: Re: High Speed Trains in Australia
From: David Johnson <trainman@ozemail.com.au>
Date: Thu, 04 Dec 1997 21:33:43 +1100
Cache-Post-Path: news!trainman@d62.cia.com.au
Newsgroups: aus.rail
Organization: CIA news services
References: <u2JLGDF$8GA.235@upnetnews02.moswest.msn.net> <3480E448.CB8921E2@ozemail.com.au> <uPi$dWY$8GA.137@upnetnews03> <34815A19.665E8B28@klever.net.au> <65rqin$oi0$1@gruvel.une.edu.au> <664jb7$2r5@inferno.mpx.com.au> <mauried.141.34861FE3@commslab.gov.au>
Reply-To: trainman@ozemail.com.au

Maurie Daly wrote:

> How physically is this done?
> Normally to provide HEP , requires a constant RPM generator set , to maintain
> the 50 HZ .
> Means that you cant derive the power from the main traction alternator or from
> the main prime mover.
> As Im fairly sure the XPTS dont have a secondary generator, how is this
> done?Static Invertors possibly?

The power supply on the XPT is variable voltage, variable frequency.  I can tell you what
throttle notch the XPT is in simply by listening to the speed of the air-conditioning.
This is why the large microwave ovens that used to be in the buffet cars kept exploding.
All power applications requiring steady supply run off 120 V DC.

The only static invertors on the train are in each toilet and sleeping car compartment.
They are rated at 40 V.A. and used only for 240V shavers.

--
David Johnson
CityRail Guard
trainman@ozemail.com.au
http://www.ozemail.com.au/~trainman

References:
- Re: High Speed Trains in Australia
  - From: "Rex" <mayod@microplex.com.au>
- Re: High Speed Trains in Australia
  - From: mauried@commslab.gov.au (Maurie Daly)

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