Background and overview
JR Central developed 313-8000 series suburban DC electric multiple unit (EMU) trains and delivered four 3-car sets to Jinryo depot to introduce for the "Central Liner" seating reserved rapid services linking Nagoya and Nakatsugawa in 1999. Their sets consist of 2 powered vehicles and 1 trailer vehicle.
Car body
They have 2930mm wide body, incorporating light weight stainless construction.
Their pier panels (strength members) are also gotten rid of to match various
seating arrangements. Their bodies are unpainted and have the orange and
white waistline band running through the length of each car below the windows.
They also have the orange gradation stripe wide band around the windows.
Their gangwayed cab end section painted in silver and also had orange gradation
stipe band around windscreen is constructed by steel. Anti-fall plates
between vehicles excepting the cab end are also introduced. They are equipped
with three 1300mm wide double-leaf automatic sliding doors on each side
of the vehicles. Horizontal band of 5 set fixed windows having 930mm height
are fitted between the doors and hopper windows are at the end of their
body. While they are used on "Central Liner" rapid services,
centre doors are closed on. So, centre doors also have the orange and white
waistline band and the orange gradation stripe band to produce the sense
of unity with their body side. Double-glazing UV cut glass is employed
for all windows to improve noise insulation property and to prevent dew
condensation. Traditional destination and seating class rollsigns are fitted
on the side of their body and a destination rollsign and a train-type rollsign
are fitted at the front of end vehicles. Two air conditioners, C-AU714A,
rated at 21,000kcal/h/unit, and no ventilators are fitted on their roof.
Loudspeakers, providing guidance broadcast for passengers waiting at a
station, are fitted on their roof. End cars are equipped with the automatic
jumper coupler to ease rush-up operations.
Bogies
Motored bogies are C-DT63A and trailer bogies are C-TR251, featuring bolster-less
secondary air suspension, corn-shaped multilayered rubber spring journal
supporting system, and the single link traction device. The lateral distance
between secondary air suspensions is 20mm wider than that of 373 series
and the yaw dampers are adopted to ensure smooth ride characteristics even
at 120km/h. Twin Disc (TD) flexible joint employing deflecting plates made
of carbon-fiber reinforced plastic (CFRP) is applied for power transmission
device. Motored bogies employ the single tread brake device adopting automatic
gap-adjusting unit, and trailer bogies employ both the double disk brake
device and the wheel tread cleaning device.
Traction unit and ancillary equipments
Class moha313-8500 vehicles are equipped with both a motored bogie and
a trailer bogie to make same quantity of powered axles and trailer axles
in a 3-car set. Thus, powered end vehicles, class kumoha313-8500, are equipped
with a 3-step Variable-frequency drive (VFD) traction system, C-CS37, featuring
Insulated Gate Bipolar Transistor (IGBT) and controlling four asynchronous
traction motors, C-MT66A, with a power output of 185kW on truck basis.
This traction system is integrated with the auxiliary power supply unit
with a power output of 150kVA. In case of the auxiliary power supply unit
failure, one AVAF inverter unit for traction motor drive can switch to
supply electricity as the backup auxiliary power supply unit. On the other
hand, powered intermediate vehicles, class moha313-8500, are equipped with
a traction system, C-CS38G2, controlling two traction motors. Powered end
vehicles are also equipped with a single arm type current pickup, C-PS27A,
on their roof. Trailer end vehicles are equipped with a motor driven air
compressor, C-C2000ML, under their floor. 313-8000 series feature the electric
commanding brake with regenerative brake and holding brake, featuring brake
control of trailer priority.
Accommodation
Seating accommodation consists of 2+2 abreast switchable transverse seating
with 910mm seating pitch with movable headrest keeping upright and transverse
bucket seating bays at the end of the passenger saloon. The backrest of
their switchable transverse seating is higher than those of other subseries
of 313 series. Their window fame is not made of aluminum but fibre reinforced
plastic (FRP). They do not adopt free stop roller blinds but sliding pleated
curtains. The passenger room and the doorway were partitioned. Their luggage
rack is not made of stainless but plastic used for intercity vehicles.
The air conditioning duct is fitted above the ceiling in order to improve
interior design and the outlets of cool air are slit shape. Straps were
fitted throughout their body. Two LED displays for providing passenger
information are fitted above the aisle near the doorways at the end of
their body for passengers sitting on the seat to keep visibility against
partitions at the doorway. Trailer end cars, class kuha312-8000, are equipped
with a universal access style toilet employing a chemical holding tank.
They are also equipped with the automatic announcement system.
Latest operation status
313-8000 series entered "Central Liner" rapid revenue services in December, 1999. Additional two 3-car sets were delivered to provide additional capacity in 2001. They started 130km/h operation in March, 2007. However, they have been used on rapid and ordinary services of Chuo line between Nagoya and Nakatsugawa after the discontinuance of "Central Liner" rapid services in 2013. |
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