When regeneration has nowhere to go
A braking chopper diverts unaccepted regenerative energy to resistors, sustaining electric braking almost to standstill.
지역 철도
Niigata’s E129 succeeded the 115 series. Its design draws on E233 technology, with wider seats and updated passenger information displays.
JR東日本
| 전원E129 | DC |
|---|---|
| 공표 최고 속도E129 | 110 km/h |
| 기술E129 | Based on E233 technology |
M은 동력차, T는 무동력차입니다. 각 항목은 명시된 사양과 자료 시점에 해당합니다.
2015 manufacturer specification, not the earlier 2013 planning table.
| Speed categories | Service 110 km/h; design 120 km/h. |
|---|---|
| Motor rating | MT75B induction motor: 140 kW one-hour rating per motor. |
| Distributed traction | Each car has one powered and one unpowered bogie (0.5M). |
| Converter grouping | SC102: two-level IGBT, two independent two-motor groups. |
| Degraded restart | A two-car set can restart on 35‰ with one two-motor group isolated. |
| Drive gearing | TD parallel cardan; 97:16 gear ratio (about 6.06). |
A braking chopper diverts unaccepted regenerative energy to resistors, sustaining electric braking almost to standstill.
In the photographed leading car, benches occupy the space between the cab-end and middle doors. Walk past the middle doors toward the coupling to find the mixed seating area.
운행 시작 연도 · 2014
확인일 2026-11-07