Electrical/mechanical Specifications
In ER2 electric trainsets (their numbering starts with 300) DK-604B dynamotors, BVP-105A-1 fast switches are installed. These switches have diafragmatic lead. 40KN400 alkaline batteries are used instead of acid batteries.
ER2 motor car weighs 54.6 tons, Cab car - 40.9 tons, trailer car - 38.3 tons. The ER2 motor car weight is slightly higher than the ER1, because the plant used aluminum doors and wiring channels in order to reduce cars' weight.
It is necessary to point out the following from the most significant construction improvements.
In electric trainsets released in 1965 N. E. Galakhov's amortizers are changed by cylindrical springs. The same time hydraulic amortizers are installed between trolley frame edges, and upper beam above the amortizer. The static deformation of amortizing system is increased from 95 mm up to 120 mm. The body weight is transmitted to improved trolleys through edge sliders, while ______ serves only for transmitting horizontal forces.
In 1964 one electric trainset was released with rubber clutches instead of ______ clutches between shafts of motor and speed reduction couple. By the end of 1965 five more trainsets with such clutches were released.
In 1964 URT-110A traction engines had been installed on electric trainsets. (unified traction engines from Riga) In difference of DK-106B engines collectors are plastic, the isolation of coil, electrode, and rotor is made of escapon. Brush holders are plastic. The electromechanical features of motor remained the same.
In 1965 due to installation of more stable pantograph isolators (made of plastic glass AG-4), the relay system developed by N. A. Lapin was excluded from trains' construction.
In 1963 one of electric trains (ER2a-413) was released with "auto-engineer." It entered Moscow - Klin segment of October railroad for experimental testing.
While speed reduction ratio is 1:3.17, wheel diameter is 1050 mm, and electric engine clamp voltage is 1500 volts, ER1 and ER2 electric trainsets have following traction data:
The speed is __ km/h, the traction force is __ kg, increased field - 51.8 5270, normal field 71.2 4040. In long timing mode increased field - 59 3530, normal field 82.4 2790.
The constructional speed of train is 130 km/h. The acceleration up to 60 km/h 0.6-0.7 m/s². In case of 2.5 km distance between stops the speed is up to 95 km/h. In case of 5 km - 110 km/h. The minimal radius of curve is 100 m in case of 5 km/h speed.
In 1966-1975 period the railcar manufacturing plant of Riga continued the release of ER2 suburban electric trainsets, for 3000 V DC. They started to be built already in 1962. Basic electric equipment for these trains was manufactured by Electric Machinery plant of Riga. The majority of electric trainsets was released in 10 car versions (five countable sections), part in 8-car edition (four countable sections). The separate section edition was accepted too. (?) Electric trainsets can be used in 12-car, 6-car, as well as 4-car compositions. Railcars' length is 20.10 m including auto-couplers.
Read more about this topic: ER2 Electric Trainset
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