E531 series
Image of E531 series train
An E531 series train on the Joban Line (in March 2019 Between Matsudo Station and Kanamachi Station)
In service2005–Present
ManufacturerTokyu Car Corporation, Kawasaki Heavy Industries, JR East, J-TREC
Replaced403 series, 415 series, some E501 series
Constructed2005–2020
Entered service9 July 2005
Number built460 vehicles
Number in service460 vehicles
Formation5/10 cars per trainset
Fleet numbers
  • K401–K426 (10-car sets)
  • K451–K483 (standard 5-car sets)
  • K551–K557 (cold-weather 5-car sets)
Operator(s)
JR logo (east).svg
JR East
Depot(s)Katsuta
Line(s) servedUeno–Tokyo Line, Jōban Line, Mito Line, Tōhoku Main Line
Specifications
Car body constructionStainless steel
Car length20,000 mm (65 ft 7 in)
Width2,950 mm (9 ft 8 in)
Floor height1,130 mm (3 ft 8 in)
Doors4 pairs per side
Maximum speed130 km/h (80 mph)
Traction systemPWM 2-level IGBTVVVF (Hitachi)
Traction motors4 × 140 kW (190 hp) 3-phase AC induction motor (Hitachi)
Power output1.12 MW (1,500 hp) (5-car sets)
2.24 MW (3,000 hp) (10-car sets)
Acceleration2.5 km/h/s
Deceleration4.2 km/h/s
Electric system(s)1,500 V DC and 20 kV 50 Hz AC, both from overhead catenary
Current collector(s)PS37A single-arm pantograph
BogiesDT71 (motored)
TR255 (trailer)
Braking system(s)Regenerative brake
Safety system(s)ATS-SN, ATS-P, ATS-Ps
Track gauge1,067 mm (3 ft 6 in)

The E531 series (Japanese: E531系, Hepburn: E531-kei) is an electric multiple unit (EMU) train type operated by East Japan Railway Company (JR East) in Japan.[1] It was introduced by JR East on 9 July 2005 to replace the aging 403 and 415 series EMUs running on the Jōban Line from Ueno Station in Tokyo. The stock is a dual-voltage (1,500 V DC & 20 kV AC) development of the DC-only E231 series suburban EMU design, and can run at speeds of up to 130 km/h (80 mph) in service.[2]

Operations

Trains are formed in 10-car (set numbers K401–K426) and 5-car (set numbers K451–K483, K551–K557) sets. 15-car formations are generally run between Shinagawa and Tsuchiura. 10- and 5-car sets operate singly north of Tsuchiura, and 5-car sets are used on the Mito Line. 5-car cold weather sets (E531-3000 series) are used on the Tōhoku Main Line between Kuroiso and Shin-Shirakawa.

Formations

10-car sets

As of 1 October 2018, 26 ten-car sets (K401–K426) are based at Katsuta Depot and formed with four motored ("M") cars and six non-powered trailer ("T") cars.[3]

 
← Takahagi
Shinagawa →
 
Car No. 10 9 8 7 6 5 4 3 2 1
Designation Tc T M M' T' Tsd Tsd' M M' Tc'
Numbering KuHa E531-0 SaHa E531-0/-2000 MoHa E531-2000 MoHa E530-2000 SaHa E530-2000 SaRo E531-0 SaRo E530-0 MoHa E531-1000 MoHa E530-0 KuHa E530-0

Standard 5-car sets

As of 3 March 2020, 33 five-car sets (K451–K483) are based at Katsuta Depot and formed with two motored ("M") cars and three non-powered trailer ("T") cars.

 
← Haranomachi
Oyama, Shinagawa →
 
Car No. 15 14 13 12 11
Designation Tc T M M' Tc'
Numbering KuHa E531-1000 SaHa E531-0 MoHa E531-0 MoHa E530-1000 KuHa E530-2000

Cold-weather 5-car sets

As of 1 October 2018, seven five-car sets (K551–K557) are based at Katsuta Depot and formed with two motored ("M") cars and three non-powered trailer ("T") cars.[3]

An E531 series train on the Tōhoku Main Line in October 2017 near Shirasaka
An E531 series train on the Tōhoku Main Line in October 2017 near Shirasaka
 
← Haranomachi, Kuroiso
Shin-Shirakawa, Shinagawa →
 
Car No. 15 14 13 12 11
Designation Tc T M M' Tc'
Numbering KuHa E531-4000 SaHa E531-3000 MoHa E531-3000 MoHa E530-4000 KuHa E530-5000

Original 10-car sets (July 2005 – March 2007)

The original ten-car sets delivered without bilevel Green cars were formed as follows.[4]

Sets K401–K406

 
← Takahagi
Ueno →
 
Car No. 10 9 8 7 6 5 4 3 2 1
Designation Tc T M M' T' T T M M' Tc'
Numbering KuHa E531-0 SaHa E531-0 MoHa E531-2000 MoHa E530-2000 SaHa E530-2000 SaHa E531-2000 SaHa E531-2000 MoHa E531-1000 MoHa E530-0 KuHa E530-0

Sets K407–K411

 
← Takahagi
Ueno →
 
Car No. 10 9 8 7 6 5 4 3 2 1
Designation Tc T M M' T' T' T' M M' Tc'
Numbering KuHa E531-0 SaHa E531-0 MoHa E531-2000 MoHa E530-2000 SaHa E530-2000 SaHa E530-2000 SaHa E530-2000 MoHa E531-1000 MoHa E530-0 KuHa E530-0

Interior

History

The first E531 series trains entered service on 9 July 2005.[5]

Pairs of double-deck "Green" (first class) cars were added to the ten-car sets from 6 January 2007, and all ten-car sets included Green cars by the start of the revised timetable on 18 March 2007. Two trailer cars from sets K401–K411 (cars 4 and 5) were repurposed as cars 6 and 9 in sets K412–K422. As there were 12 SaHa E531-2000 cars and 10 SaHa E530-2000 cars being repurposed (the latter type has an air compressor missing from the former type), the SaHa E531-2012 car was modified to become SaHa E530-2022.

In September 2014, an additional ten-car set, K423, was delivered from the J-TREC factory in Yokohama, four years after construction of the original fleet had ceased.[6] This was followed by seven new five-car sets (K469–K475) also delivered from J-TREC in Yokohama from December 2014 to March 2015.[7] Seven cold-weather E531-3000 series sets (K551–K557) were built between October 2015 and March 2017. Later in 2017, three more 10-car sets (K424–K426) and two more five-car sets (K476 and K477) were built. Then, between 2019 and 2020, six more five-car sets (K478–K483) were built.

On 26 March 2021, set K417 was involved in a collision between Tsuchiura and Kandatsu. It collided with a passenger vehicle which caught fire and caused damage to the KuHa E531-17 car (car 10).[8]

Special liveries

Set K451 in November 2021
Set K451 in November 2021

To celebrate the 60th anniversary of the Katsuta Depot, set K451 entered service on 5 November 2021 in a wrapping reminiscent of the livery of the 401 series trains.[9]

References

  1. ^ JR全車輌ハンドブック2009 [JR Rolling Stock Handbook 2009]. Japan: Neko Publishing. 2009. ISBN 978-4-7770-0836-0.
  2. ^ "E531系一般形交直流電車の概要" [E531 series AC/DC EMU outline]. Railway Journal. 39 (465): 102. July 2005.
  3. ^ a b c d e f g h i j k l m n o p q r s JR電車編成表 2019冬 [JR EMU Formations - Winter 2019]. Japan: Kotsu Shimbunsha. 14 November 2018. ISBN 978-4-330-93218-7.
  4. ^ JR電車編成表 '07冬号 [JR EMU Formations - Winter 2007]. Japan: JRR. December 2006. p. 47. ISBN 978-4-88283-046-7.
  5. ^ JR電車編成表 2012夏 [JR EMU Formations - Summer 2012]. Japan: Kotsu Shimbunsha. May 2012. p. 44. ISBN 978-4-330-28612-9.
  6. ^ "常磐線E531系が4年ぶりに新造される" [New E531 series built for first time in 4 years]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 1 October 2014. Retrieved 1 October 2014.
  7. ^ E531系K469編成総合車両製作所出場 [E531 series set K469 delivered from J-TREC]. RM News (in Japanese). Japan: Neko Publishing Co., Ltd. 19 December 2014. Retrieved 19 December 2014.
  8. ^ "JR常磐線衝突事故 車は直前まで警察の追跡受け逃走中" [JR Jōban Line Collision: car was on the run from police until just before the accident]. 26 March 2021.
  9. ^ "E531系K451編成に「赤電」ふうラッピング". Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 7 November 2021. Archived from the original on 7 November 2021. Retrieved 30 November 2021.

Further reading