SŽD series ВЛ41
| SŽD series ВЛ41 (WL41) | |
|---|---|
 ВЛ41.060
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| Numbering: | SŽD ВЛ41.001-078 |
| Number: | 78 |
| Manufacturer: | Dnipropetrovsk electric locomotive factory |
| Year of construction (s): | 1963-1964 |
| Axis formula : | Bo'Bo ' |
| Gauge : | 1,520 mm |
| Service mass: | 92 t |
| Wheel set mass : | 23 t |
| Top speed: | 70 km / h |
| Hourly output : | 1,700 kW |
| Continuous output : | 1,520 kW |
| Power system : | 25 kV 50 Hz ~ |
| Number of traction motors: | 4th |
The SŽD series ВЛ41 (German transcription WL 41 ) of the Soviet Railways (SŽD) was a four-axle electric locomotive for operation on main lines with alternating current . It was developed from industrial electric locomotives that were equipped to operate under contact wires and had a separate diesel engine generator unit, and were intended for shunting service . They were delivered by the Dnepropetrovsk electric locomotive factory from 1963 to 1964 .
History and construction
At the beginning of the 1960s, the Ministry of Railways and Communications of the SŽD made the decision to start building electric locomotives for shunting on lines with 25 kV 50 Hz alternating current . The construction of this locomotive was entrusted to the Dnipropetrovsk electric locomotive factory , which had previously built electric locomotives for industrial companies. Project planning began in early 1960, with the delivery of four-axle and six-axle shunting electric locomotives with an autonomous diesel generator unit. But the decision for the new electric locomotive of the state railway fell on a four-axle locomotive without an autonomous power unit. The locomotive was intended for the voltage system 25 kV 50 Hz alternating current, the rectification to the traction motors with direct current was carried out by means of ignitronic rectifiers . An industrial locomotive from the plant with the designation Д100 M ( D100 M ), which still had an autonomous diesel generator unit, was used as the base unit for the new locomotive . Originally, the new locomotives were to be given the designation Д92 ( D92 ), but when they were commissioned they were given the designation ВЛ41 ( WL41 ). The first locomotive was built in 1963.
The box of the locomotive was a welded construction and designed analogously to the SŽD series ВЛ60 . The pairs of wheels, the electric traction motors and the transmission were designed as in the SŽD series ВЛ8 . For the rectification six served the current Ignitronen that were arranged in two groups of three parallel elements. The drive scheme was the same as for the ВЛ60 electric locomotive . The mass of the locomotive was 92 t.
The results of the test showed that the electric locomotive did not have a good position on the track, which was worse than the SŽD series ВЛ80 . That is why it was decided to use additional damping for the suspension between the bogies and the locomotive body for the series locomotives . But this only led to the damping of the locomotive and a higher load on the superstructure. Therefore, the maximum speed of the locomotive, which was originally intended for 100 km / h, had to be limited to 70 km / h. A total of 78 electric locomotives of the series were delivered (28 locomotives in 1963 and 50 locomotives in 1964).
Modifications
In 1966, an electric locomotive of the series ВЛ41 was converted into a locomotive for combined contact wire / battery operation. A two-axle tender with the rechargeable battery was attached to the locomotive. This also took on some of the electrical equipment, which led to a reduction in the track load. Certainly this version arose from the considerations that the locomotive could also be used more freely on station tracks without overstretched contact wire.
The rechargeable batteries could be charged both in parking spaces and under the contact wire during operation. If the locomotive was powered by the battery for the traction motors, it could only be driven in shunting service. The literature does not provide any information on the distribution of the modification.
A further modification was made in 1975–1977 for 13 electric locomotives on the rectifiers , which were replaced by silicon rectifiers . These locomotives were given the designation ВЛ41 K ( WЛ41 K ).
business
The locomotives were used for shunting the companies East Siberian Railway , Gorky Railway , West Siberian Railway , Moscow Railway , Odessa Railways , North Caucasus Railway and Yugo-Vostochnaya schelesnaja doroga allocated. In operational use, the locomotives showed rather insufficient application possibilities for shunting services; This was due in particular to the unfavorable friction mass, the high load on the rails - traction and speed were not considered sufficient, and the covering of the stations with contact wire was not yet fully developed. Therefore, they did not last long in operational service, but were soon implemented for industrial operations on coal-mining routes or for use as mobile electric stations. In the second case, the transformer windings were changed to 10 kV. As early as 1970–1975, most of the locomotives were deleted from the inventory lists. The last locomotive remained until 1990, it was in this case a modified ВЛ41 K .
The construction of a planned six-axle electric locomotive with an autonomous diesel generator unit might have solved the problems of use, but the decision was made in favor of the development and construction of an electric locomotive with an integrated battery for operation independently of the contact wire ( SŽD series ВЛ26 ).
Preserved locomotives are known in the railway museums in Saint Petersburg ( ВЛ41.060 ) and Rostov-on-Don ( ВЛ41.073 ).
