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SEK Class Θα

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SEK class Θα
Type and origin
Power typeSteam
BuilderHanomag
Build date1911
Specifications
Configuration:
 • Whyte2-8-0
 • UIC1′D n4v
Gauge1,435 mm (4 ft 8+12 in)
Wheelbase:
 • Leading850 mm (2 ft 9+12 in)
 • Drivers1,250 mm (4 ft 1+14 in)
Length17.368 m (56 ft 11+34 in)
Width4.650 m (15 ft 3+116 in)
Axle load14.1 tonnes (13.9 long tons; 15.5 short tons)
Adhesive weight56.4 tonnes (55.5 long tons; 62.2 short tons)
Loco weight68.7 tonnes (67.6 long tons; 75.7 short tons)
Tender weight39.9 tonnes (39.3 long tons; 44.0 short tons)
Total weight107.7 tonnes (106.0 long tons; 118.7 short tons)
Fuel typeCoal
Fuel capacity7 tonnes (6.9 long tons; 7.7 short tons)
Water cap.7,000 litres (1,500 imp gal; 1,800 US gal)
Firebox:
 • Grate area3.96 m2 (42.6 sq ft)
Boiler pressure15 kgf/cm2 (1.47 MPa; 213 psi)
Heating surface171.44 m2 (1,845.4 sq ft)
Cylinders4, compound
High-pressure cylinder375 mm × 650 mm (14+34 in × 25+916 in)
Low-pressure cylinder600 mm × 650 mm (23+58 in × 25+916 in)
Performance figures
Maximum speed65 km/h (40 mph)
Career
OperatorsBDŽ → SEK → BDŽ
NumbersBDŽ 705 → SEK 601 → SEK 501 → BDŽ 27.17

SEK (Sidirodromoi Ellinikou Kratous, Hellenic State Railways) class Θα (or class THb; Theta-alpha) is a class of one 2-8-0 steam locomotives, acquired after the First World War.[1]

Originally one of the Bulgarian State Railways' (BDŽ) 700 series four-cylinder compound locomotives that had been built by Hanomag in 1911 as BDŽ 705. It was given the class letters "Θα" by the SEK and initially numbered 601 before being renumbered 501.

During World War II it was reclaimed by the Bulgarians and renumbered BDŽ 27.17 at the end of the surviving 700s (which by then had become BDŽ class 27).

Notes

[edit]
  1. ^ Durrant 1972, p. 52.

References

[edit]
  • Durrant, A. E. (1972). The Steam Locomotives of Eastern Europe (2nd ed.). Newton Abbott: David & Charles. ISBN 0-7153-4077-8.