Head End Power

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Steam locomotives and early diesel and electric locomotives provide steam heating (the diesels and electrics have special [http://en.wikipedia.org/wiki/Steam_generator_%28railroad%29 steam generators] for heating), and electrical power for lighting is generated by dynamos under each car.  Later locomotives (from the AEM7 and F40PH onwards) have either HEP provided by the traction system, or a seperate HEP generator, which provides electrical power for both heating and lighting.
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Steam locomotives and early diesel and electric locomotives provide steam heating (the diesels and electrics have special [http://en.wikipedia.org/wiki/Steam_generator_%28railroad%29 steam generators] for heating), and electrical power for lighting is generated by dynamos under each car.  Locomotives built after 1970 have HEP ([http://en.wikipedia.org/wiki/Head_end_power Head End Power]) provided by either the traction system or a seperate HEP generator.  HEP provides electrical power for both heating and lighting.
  
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===Notes===
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*Diesel and electric locomotives without a steam generator or an HEP system cannot haul passenger trains.
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*Steam locomotives, Doodlebugs, Interurbans and Boxcab electrics retain steam heating even if built after 1970.
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*The UAC TurboTrain has HEP even if built before 1970.
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*The RDC, Metroliner and EMUs generate their own power in each car, and so do not have any additional costs.
  
  
<small>^Running costs increases are in uninflated 1921 dollars, with vehicle running costs on medium.</small>
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<small>^uninflated 1921 dollars, with vehicle running costs on medium.</small>
  
 
[[category:NARS]]
 
[[category:NARS]]

Latest revision as of 16:38, 19 May 2008

In NARS, passenger carriages require power for heating and lighting. This power is provided by the train's locomotive, and will either increase the running cost, decrease the horsepower, or both.

Carriage Type HP reduction Running cost^
Passenger Car with steam heating 50hp (dynamo under car) $350 per year
Passenger Car with HEP from traction system 100hp $125 per year, only incurred when train is stationary
Passenger Car with HEP from seperate system none $700 per year
Bilevel Car with steam heating 100hp (dynamo under car) $700 per year
Bilevel Car with HEP from traction system 200hp $350 per year, only incurred when train is stationary
Bilevel Car with HEP from seperate system none $1400 per year

Steam locomotives and early diesel and electric locomotives provide steam heating (the diesels and electrics have special steam generators for heating), and electrical power for lighting is generated by dynamos under each car. Locomotives built after 1970 have HEP (Head End Power) provided by either the traction system or a seperate HEP generator. HEP provides electrical power for both heating and lighting.

[edit] Notes

  • Diesel and electric locomotives without a steam generator or an HEP system cannot haul passenger trains.
  • Steam locomotives, Doodlebugs, Interurbans and Boxcab electrics retain steam heating even if built after 1970.
  • The UAC TurboTrain has HEP even if built before 1970.
  • The RDC, Metroliner and EMUs generate their own power in each car, and so do not have any additional costs.



^uninflated 1921 dollars, with vehicle running costs on medium.

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