ČSD series T 678.0

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ČSD series T 678.0
ŽSR series 775
Pomeranč
Pomeranč
Numbering: T 678.001-017 ČSD
775.001-017 ŽSR
Number: 17th
Manufacturer: ČKD Sokolovo
Year of construction (s): 1961-1964
Retirement: 1997
Axis formula : Co'Co '
Gauge : 1435 mm ( standard gauge )
Length over buffers: 18,000 mm
Height: 4,250 mm
Width: 3,100 mm
Trunnion Distance: 9,560 mm
Bogie axle base: 4,000 mm
Total wheelbase: 13,500 mm
Smallest bef. Radius: 120 m
Service mass: 111 t
Friction mass: 111 t
Wheel set mass : 18.5 t
Top speed: 100 km / h
Traction power: 1,325 kW
Starting tractive effort: 244 kN
Driving wheel diameter: 1,000 mm
Motor type: 1x ČKD K 8 S 310 DR
Motor type: Four-stroke diesel engine
Rated speed: 750 rpm
Power transmission: Direct current / direct current
Brake: DAKO
Train heating: without

The locomotive of the ČSD series T 678.0 (from 1988: series 775 ) was developed as a further development of the proven series T 435.0 . It was designed for freight traffic, at the same time an identical machine from the ČSD series T 679.0 for passenger traffic was also created. Both types of locomotive were intended for service on mountain routes to replace the steam locomotives there.

history

In 1961, ČKD produced 2 prototypes each of the T 678.0 as a freight locomotive and the T 679.0 series with a train heater as a passenger locomotive. 15 series locomotives were delivered by 1964. They were given an orange coat of paint, which soon earned them the nickname “Pomaranč” (German: Orange).

Although the locomotives had the considerable continuous pulling force of 245 kN, no other machines of this type were procured. Instead, the T 679.1 series imported from the Soviet Union was procured from 1966, as was the case with the Deutsche Reichsbahn , MAV and PKP .

Scheduled use ended with the 1996/1997 timetable change. The T 678.012 has been preserved as an operational museum locomotive in the Zvolen depot, the T 678.016 is not operational in Bratislava. A copy of the T 679.0 series was also preserved .

technical features

Like their predecessors, the locomotives were diesel-electric with tatzlager motors. They received highly charged engines from ČKD with a nominal power of 1472 kW. Since the engines did not prove themselves and were very prone to failure, engines with 1325 kW were used for the series locomotives.

commitment

The T 678.0 series locomotives were initially assigned to the Praha-Libeň , Zvolen , Olomouc and Plzeň depots . Apparently the locomotives were unsuitable for the winding mountain routes in Bohemia; later their area of ​​operation was then concentrated on the Zvolen depot. However, the locomotives proved themselves over many years on the demanding hilly routes of central Slovakia .

See also

literature

  • Glatte, Reinhardt: Diesel Locomotive Archive , Berlin, 1970
  • Catalog of historical railway vehicles on Slovak territory, Bratislava, 2001

Web links