721-3000series
-0 subseries
-2100 subseries
-3000 subseries
-3100 subseries
-4000 subseries
-5000 subseries
Type
index
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Some 721-0 series vehicles were upgraded to 130km/h capability and classified into -3000 sub-series, with the start of 130km/h operations of "Airport" rapid services from 2002. all seats of Saha721 were upgraded to adjustable reclining seating for reservation services in 2003.
Now 721-3000 series are used on the "Airport" rapid services linking Otaru/Sapporo and New Chitose Airport. |
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| Technical Data |
| Items |
Data |
| Supply Voltage |
20000VAC,
50Hz |
| Service
speed, etc. |
Acceleration:
2.4km/h/s Deceleration: 4.1km/h/s Service speed: 130km/h |
| Length |
20800mm |
| Width |
2954mm |
| Height |
3670mm |
| Bogie |
N-DT721
(motored) N-TR721 (trailer) |
| Collector |
N-PS721 |
| Traction
motor |
N-MT721
(150kW) |
| Gear ratio |
4.82 |
| Transformer |
N-TM721 |
| Rectifier |
N-RS721 |
| Traction system |
Thyristor
phase control : N-CS721 |
| Air conditioner |
N-AU721
(20000kcal/h×1) |
| Designed
by |
JR Hokkaido |
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