[PRCo] Fw: Acceleration of real trains [tm]

[Jim Holland]

"Philip Nasadowski"  wrote in message news:...
 > In article ,
 > gl4316 at yahoo.com (gl4316 at yahoo.com) wrote:
 >
 > > Aren't some of the EMUs in the northeast 1600 horsepower per car?
 >
 > HA!
 >
 > No, the highest continuous rating is around 750hp, for the Arrow III.
 > The LIRR's M-7s are rated 1080hp, but only do 700 due to the realities
 > of third rail operation.
 >
 > Under acceleration, an Arrow III can do 1400 or so for a few minutes,
 > but they can NOT do it constantly.
 >
 > The inverters on an Arrow III attempt to maintain 2.0mph/s acceleration
 > under power, but they hit their short time limit at about 50mph.
 >
 > The old M-1s were limited to about 350hp to reduce demand charges.
 >
 > The Metroliners were about 1200hp/car, when they worked.
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Jim  Holland
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Studying Pittsburgh Railways Company (PRCo)
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..............................From 1930 -- 1950
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Pennsylvania  Trolley  Museum  (PTM)
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http://www.pa-trolley.org/
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N.M.R.A.
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http://www.nmra.org/