ČSD series S 479.0
| ČSD series S 479.0 Škoda type 39E |
|
|---|---|
| Numbering: | S 479.001-002 |
| Number: | 2 |
| Manufacturer: | Škoda , Plzeň |
| Year of construction (s): | 1961 |
| Retirement: | 1985 |
| Axis formula : | Bo'Bo ' |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 16,140 mm |
| Trunnion Distance: | 7,500 mm |
| Bogie axle base: | 2,800 mm |
| Smallest bef. Radius: | 120 m |
| Service mass: | 84 t |
| Friction mass: | 84 t |
| Wheel set mass : | 21 t |
| Top speed: | 100 km / h |
| Hourly output : | 3,000 kW at 50 km / h |
| Continuous output : | 2,840 kW at 51 km / h |
| Driving wheel diameter: | 1,250 mm |
| Power system : | 25 kV 50 Hz |
| Number of traction motors: | 4th |
| Drive: | Paw camp |
| Brake: | Handbrake DAKO-G + P air brake |
| Train heating: | electric |
The ČSD class S 479.0 was a four-axle electric test locomotive of the Czechoslovak State Railways (ČSD) for the 25 kV AC system in the south and west of the former Czechoslovakia . They were the first Škoda locomotives for the 25 kV AC system and were also intended for export.
history
After enough electric locomotives were available for the main ČSD line from Chomutov to Čierna nad Tisou , Škoda Plzeň delivered the first locomotives in 1961 for the 25 kV 50 Hz electrified network in the south and west of the country.
The two test locomotives were derived from the DC locomotives of the ČSD series E 469.1 and E 499.1 . Both locomotives ran on a trial basis on the electrical section Plzeň - Blovice, which was completed in 1961 .
The use of the locomotives served to gain experience that was used for the later construction of further locomotives. Called E 479.0 when they were built, they were classified as S 479.0 after 1965 to differentiate between DC and AC locomotives . The S 479.001 drove in the Soviet Union in 1962 and 1963 , at the same time the S 479.002 was brought to Bulgaria and Romania for demonstration trips .
technical features
The locomotive brought with it a whole range of new, modern construction elements with which the ČSD had no previous experience. With the same length as the E 469.1 and E 499.1, the entire wheelbase and the wheelbase in the bogies were shortened to 2,800 mm.
In the mechanical part, the locomotives were equipped with a locomotive body with four steps, as with the direct current locomotives of the E 469.2 series and the alternating current locomotives of the S 499.02 series . They had an axle relief with an inclined rod to help with starting. The bogies were a new design.
In the electrical part, the locomotives were equipped with a transformer with an output of 4,300 kVA. Its heating power was 500 kVA. The current drawn from the transformer was converted with a quartz-silica rectifier so that a rectifier block (1025 A, 750 V) was available for each traction motor. A rectifier block was responsible for the auxiliary services. The traction motors were rectifier motors (traction output 710 kW, hourly output 750 kW at 900 rpm and 750 V and 1080 A). They were connected in series for each bogie. Their power was transferred to the drive axle with a joint coupling of the Škoda type with a transmission ratio of 1: 4.04. The permanent parallel connection of the traction motors was advantageous; they were switched with 32 speed steps at the transformer outlet.
The locomotives were equipped with the DAKO - GP automatic traction brake, an additional brake and a handbrake.
See also
literature
- Jindrich Bek, Josef Janata, Jaroslav Veverka: Malý atlas lokomotiv 2. Elektrická a motorová trakce. Nadas Publishing House, Prague 1969.
Web links
- Website about the S 479.0 series (Czech)