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 Post subject: Reading Electrification and MUs
PostPosted: Thu Dec 28, 2017 7:14 pm 

Joined: Sat Dec 17, 2016 10:00 pm
Posts: 10
In researching Reading electrification and MUs, I’ve discovered that not all sources are in agreement about the Reading’s line voltage. Some sources say 11,000 v while others say 12,000 v. Does anyone know the right answer?

Thank you.


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 Post subject: Re: Reading Electrification and MUs
PostPosted: Thu Dec 28, 2017 7:29 pm 

Joined: Mon Jul 11, 2005 9:23 am
Posts: 135
Location: willow grove pa
The 11K is the correct answer, different than the PRR. Good article in Trains about Reading Company electrics.
http://cs.trains.com/trn/f/111/t/238288.aspx


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 Post subject: Re: Reading Electrification and MUs
PostPosted: Thu Dec 28, 2017 9:41 pm 

Joined: Wed Apr 24, 2013 5:04 pm
Posts: 13
Excuse my ignorance, but what difference would 1,000 volts make?


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 Post subject: Re: Reading Electrification and MUs
PostPosted: Thu Dec 28, 2017 10:18 pm 

Joined: Wed Oct 22, 2008 8:18 pm
Posts: 2154
You get a little more transmission distance without loss. This is why the Virginian used high voltage.


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 Post subject: Re: Reading Electrification and MUs
PostPosted: Fri Dec 29, 2017 12:39 pm 

Joined: Fri Dec 22, 2017 6:47 pm
Posts: 9
Location: Philadelphia, PA
Both PRR (1915) and RDG (1931) initiated their main track electrifications at 11 kV, 25 Hz. Over time, each was increased to 12 kV, 25 Hz, currently used by Amtrak and SEPTA.

This is congruent with the increase in US household power from 110 V, 60 Hz to 120 V, 60 Hz.

Phil Mulligan


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 Post subject: Re: Reading Electrification and MUs
PostPosted: Sat Dec 30, 2017 1:30 pm 

Joined: Mon Apr 30, 2007 12:45 am
Posts: 451
Location: Illinois
jettrainfan wrote:
Excuse my ignorance, but what difference would 1,000 volts make?

16% less transmission loss

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