The is a DC electric multiple unit (EMU) train type operated by East Japan Railway Company (JR East) on local services in the Niigata area since 6 December 2014.

Design Built at the J-TREC factory in Niitsu, Niigata, the stainless steel body and "universal design" interior is derived from the E233 series commuter EMU. Externally, trains are finished in a livery with and stripes. The trains have a maximum speed of .

Operations

E129 series trains operate on the following lines, completely replacing older 115 series sets by around 2017. Joetsu Line ( – ) Shinetsu Main Line ( – ) Uetsu Main Line ( – ) Hakushin Line ( – ) Echigo Line ( – ) Yahiko Line ( – )

The E129 series trains can operated in multiple, to form 2+2, 2+4, and 2+2+2 formations, but do not operate in multiple with E127 series trains except in emergencies.

Fleet the E129 series fleet consists of 34 two-car sets (68 vehicles) numbered A1 to A34 and 27 four-car sets (108 vehicles) numbered B1 to B27. All sets are based at Niigata Depot.

Formations

2-car sets A1-A34 The two-car sets, A1 to A34, consist of two motored cars, each with one powered bogie, and are formed as shown below.

Designation Mc-100 Mc'-100 Numbering KuMoHa E129-100 KuMoHa E128-100 Weight (t) 37.2 37.2 Capacity (total/seated) 140/50 133/46 The KuMoHa E129-100 car is fitted with a PS33G single-arm pantograph (cars KuMoHa E129-123 to KuMoHa E129-130 have two pantographs, and weigh 37.4 t). The KuMoHa E128-100 car has a universal access toilet.

4-car sets B1-B27 The four-car sets, B1 to B27, consist of four motored cars, each with one powered bogie, and are formed as shown below.

Designation Mc-0 M'-0 M-0 Mc'-0 Numbering KuMoHa E129 MoHa E128 MoHa E129 KuMoHa E128 Weight (t) 37.2 31.6 32.7 37.0 Capacity (total/seated) 140/50 154/60 154/60 133/46 The KuMoHa E129 and MoHa E129 cars are each fitted with one PS33G single-arm pantograph. The KuMoHa E128 car has a universal access toilet.

Interior Passenger accommodation consists of a mix of transverse seating bays and longitudinal bench seating. LED lighting is used throughout. Longitudinal seats have a width of per person, wider than for the earlier E127 series trains, and the seating pitch for transverse seating bays is , approximately wider than E233 series trains. Floor height is , the same as for E127 series trains, and lower than the floor height of 115 series trains.

History Initial details of the new trains were announced by JR East in July 2013. The first two two-car sets, A1 and A2, were delivered on 8 October 2014, with test-running commencing the same day.

The first trains entered revenue service on 6 December 2014.

Fleet details , the fleet is as follows.

2-car sets Set No. Date delivered A1 17 October 2014 A2 A3 A4 23 October 2014 A5 7 November 2014 A6 21 November 2014 A7 8 December 2014 A8 22 December 2014 A9 15 January 2015 A10 28 January 2015 A11 27 February 2015 A12 A13 20 April 2015 A14 A15 21 May 2015 A16 A17 18 June 2015 A18 A19 16 July 2015 A20 A21 20 August 2015 A22 A23 15 September 2015 A24 A25 16 October 2015 A26 A27 11 November 2015 A28 A29 2 December 2015 A30 1 February 2016 A31 11 December 2017 A32 26 December 2017A3321 February 2022A34

4-car sets Set No. Date delivered B1 28 January 2016 B2 29 January 2016 B3 1 February 2016 B4 5 February 2016 B5 15 February 2016 B6 19 February 2016 B7 26 February 2016 B8 4 March 2016 B9 10 March 2016 B10 17 March 2016 B11 24 March 2016 B12 31 March 2016 B13 9 June 2016 B14 21 June 2016 B15 1 July 2016 B16 13 July 2016 B17 27 July 2016 B18 5 August 2016 B19 22 August 2016 B20 1 September 2016 B21 13 September 2016 B22 26 September 2016 B23 27 January 2017 B24 6 February 2017 B25 14 February 2017 B26 23 February 2018 B27 1 March 2022

Derivatives Delivery of three two-car sets from J-TREC in Niitsu began in March 2020. They are derived from the E129 series and are scheduled to replace the 115 series currently operated by Shinano Railway. These trains were put into service of rapid trains operated by Shinano Railway starting from 4 July 2020.

References

External links

JR East E129 series