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"Shinano"
Kumoha383


JR Central developed 383 series tilting electric multiple unit (EMU) train type in order to shorten the required time and improve passenger's accommodation in 1994, since 381 series, which had been used on "Shinano" services linking Nagoya and Nagano, were superannuated. 383 series adopt AVAF inverter control system to achieve the improvement of maximum service speed and acceleration performance. 383 series adopt 2 car unit consisted of 1 motored car and 1 trailer car. 383 series are equipped with tilting system with electrical control to raise their speed at a curve and improve comfort to ride. All air conditioners, including those of motored cars, are fitted under the floor in order to make their centre of gravity lower.
Bolster-less air suspension bogies, C-DT61A/C-TR245A, are equipped with built-in bearing guides, which have lower frictional resistance than 381 series, for body tilting system, and equipped with yaw dampers to ensure smooth ride characteristics even at high speed. Moreover, C-DT61A/CTR245A is self-steering bogie in order to reduce lateral force in travelling at a curve. 383 series adopt mixed regenerative-dynamic braking under low possibility of regeneration.
The lightweight stainless steel body is adopted. The 1st class end cars towards Nagano are observation cars, and the other end cars are equipped with the through door in front of the bodies. All seats are adjustable reclining. 1st class vehicles have 2+2 abreast seating and seat pitch is 1200mm and standard class vehicles have 2+2 abreast seating and seat pitch is 1000mm.
Mass production vehicles were delivered in 1996. There are 2-car formation and 4-car formation besides 6-car formation.
Now 383 series are used on "Shinano" services linking Nagoya and Nagano.
Technical Data
Items Data
Supply Voltage 1500VDC
Service speed, etc. Acceleration: 2.1km/h/s Service speed: 130km/h
Length 20800mm
Width 2852mm
Height 3725mm
Bogie C-DT61A (motored) C-TR245A (trailer)
Collector C-PS27
Traction motor C-MT65A (150kW)
Gear ratio 5.57
Traction system AVAF inverter control on axle basis: C-SC35A, C 
Air conditioner C-AU35S (360000kcal/h×1)
Designed by JR Central