{
  "edition": "2026-11-07",
  "id": "e8",
  "locale": "pt-BR",
  "url": "https://senroam.com/pt-BR/trains/e8/",
  "name": "E8 · Yamagata · Tsubasa",
  "summary": "E8 · Yamagata · Tsubasa · Parte superior roxa e faixa amarelo-cártamo no Tsubasa.",
  "type": "train",
  "questions": [],
  "sources": [
    {
      "url": "https://www.jreast.co.jp/train/shinkan/e8.html",
      "checked": "2026-11-07",
      "lang": "ja"
    }
  ],
  "detail": "Parte superior roxa e faixa amarelo-cártamo no Tsubasa.",
  "technical": {
    "record": {
      "scope": [
        "E8 · G1 revealed 2023-02-24; service from 2024-03-16",
        "E8系 · 2023年2月24日公開のG1編成、2024年3月16日営業開始"
      ],
      "rows": [
        [
          "formation",
          "7 cars · 5M2T",
          "7両 · 5M2T",
          "e8reveal"
        ],
        [
          "body",
          "Aluminium alloy",
          "アルミ合金",
          "e8reveal"
        ],
        [
          "pantographs",
          "Cars 12 and 16 · single arm",
          "12・16号車 · シングルアーム",
          "e8reveal"
        ],
        [
          "builders",
          "Kawasaki Railcar / Hitachi",
          "川崎車両・日立製作所",
          "e8reveal"
        ],
        [
          "nose",
          "9 m",
          "9 m",
          "e8guide"
        ],
        [
          "speed",
          "300 km/h · Shinkansen sections",
          "300 km/h · 新幹線区間",
          "e8guide"
        ]
      ],
      "note": [
        "The 9 m nose balances tunnel pressure-wave control and passenger space. The five powered cars are distributed through the set; the pantographs are on the two unpowered cars.",
        "9 mの先頭部でトンネル微気圧波対策と客室空間を両立。電動車5両を編成内に配置し、パンタグラフは2両の付随車に搭載する。"
      ]
    },
    "sources": {
      "jr2013": {
        "title": "JR-East Shinkansen",
        "publisher": "JR East · Yagishita",
        "url": "https://www.schienenfahrzeugtagung.at/download/PDF2013/02_Yagishita.pdf",
        "language": "en",
        "date": "2013",
        "locator": "Slide “Features of rolling stock”, comparison table",
        "supports": "E2-1000, six-car E3, E4, E5, E6 formation, train length, body width, per-motor continuous output, electrical supply and signalling as presented in 2013.",
        "checked": "2026-11-07"
      },
      "hitachi97": {
        "title": "新型高速新幹線電車",
        "publisher": "日立製作所 · 日立評論",
        "url": "https://www.hitachihyoron.com/jp/pdf/1997/02/1997_02_02.pdf",
        "language": "ja",
        "date": "1997-02",
        "locator": "Table 1, printed pp.154–155",
        "supports": "Historical E1 supply/formation; original E2 50/60 Hz capability. Early E3 five-car data is excluded from the later six-car profile.",
        "checked": "2026-11-07"
      },
      "e1launch": {
        "title": "全車2階建て新幹線電車",
        "publisher": "日本機械学会 · JR東日本提供",
        "url": "https://www.jsme.or.jp/tldnew/uploads/sites/26/2022/01/NL07.pdf",
        "language": "ja",
        "date": "1994-03",
        "locator": "Article “全車2階建て新幹線電車”",
        "supports": "Original E1 240km/h, VVVF control and regenerative/electrically commanded air braking.",
        "checked": "2026-11-07"
      },
      "e4hitachi": {
        "title": "社会・産業・家庭 · E4系2階建新幹線電車",
        "publisher": "日立製作所 · 日立評論",
        "url": "https://www.hitachihyoron.com/jp/pdf/1999/01/1999_01_06.pdf",
        "language": "ja",
        "date": "1999-01",
        "locator": "交通システム · E4系2階建新幹線電車",
        "supports": "E4 aluminium body, eight cars, IGBT three-level PWM main converter and 1997-12 delivery.",
        "checked": "2026-11-07"
      },
      "e5motor": {
        "title": "JR East – Series E5",
        "publisher": "Hitachi Industrial Products",
        "url": "https://www.hitachi-ip.com/products/traction_motors/casestudy/series_e5.html",
        "language": "en",
        "date": null,
        "locator": "Traction motor specifications",
        "supports": "Hitachi-supplied E5 induction motor, rated 300kW, copper rotor, forced ventilation, 431kg and 696 × 512mm. The dimensions and mass refer to one motor.",
        "checked": "2026-11-07"
      },
      "drive2012": {
        "title": "さまざまなニーズに応える鉄道車両駆動用主回路技術",
        "publisher": "日立製作所 · 日立評論",
        "url": "https://www.hitachihyoron.com/jp/pdf/2012/06/2012_06_04.pdf",
        "language": "ja",
        "date": "2012-06",
        "locator": "§3.1 and Figure 3",
        "supports": "Hitachi E5/E6 main-converter design commonality; IGBT three-level converter/inverter architecture. Applies to Hitachi equipment.",
        "checked": "2026-11-07"
      },
      "e7jtrec": {
        "title": "JR東日本 E7系新幹線電車",
        "publisher": "総合車両製作所",
        "url": "https://www.j-trec.co.jp/company/070/03/jtr03_26-31.pdf",
        "language": "ja",
        "date": "2014-12",
        "locator": "Printed pp.26–31; §2.1.1 and Table 1",
        "supports": "E7 original 12-car 10M2T formation, aluminium double skin, 9.1m nose, 300kW forced-air squirrel-cage motors, 25kV supply, three-level PWM, regenerative/electrically commanded air brakes, DT211/TR7010/TR7010A bogies and DS-ATC/RS-ATC.",
        "checked": "2026-11-07",
        "availability": [
          "Original PDF link returned 404 on 7 November 2026. The bibliographic reference is retained; use the separately cited Kawasaki paper below for newly verified design context.",
          "2026年11月7日の確認では元のPDFリンクが404を返した。書誌情報は保持し、新たに確認した設計上の解説には下段で別途引用する川崎重工の資料を用いる。"
        ]
      },
      "h5launch": {
        "title": "北海道新幹線用車両（H5系）の概要",
        "publisher": "JR北海道",
        "url": "https://www.jrhokkaido.co.jp/press/2014/140416-1.pdf",
        "language": "ja",
        "date": "2014-04-16",
        "locator": "別紙 · 仕様表",
        "supports": "Original H5 ten-car formation, maximum tilt 1.5 degrees, full active suspension, seating pitch. Original capacity is historical.",
        "checked": "2026-11-07"
      },
      "h5guide": {
        "title": "はやぶさ・はやて H5系",
        "publisher": "JR北海道",
        "url": "https://www.jrhokkaido.co.jp/train/shinkansen.html",
        "language": "ja",
        "date": null,
        "locator": "車両概要",
        "supports": "H5 based on E5; ten cars and 320km/h capability. Hokkaido line speeds are qualified separately by operator.",
        "checked": "2026-11-07"
      },
      "west2025": {
        "title": "データで見るJR西日本2025 · 車両",
        "publisher": "JR西日本",
        "url": "https://www.westjr.co.jp/company/info/issue/data/pdf/data2025_15.pdf",
        "language": "ja",
        "date": "2025",
        "locator": "W7系（W編成） vehicle entry",
        "supports": "W7 representative twelve-car formation, 542.1t train mass and 260km/h service speed. Parsed class seat totals are inconsistent and excluded.",
        "checked": "2026-11-07"
      },
      "e8reveal": {
        "title": "JR東日本「E8系」山形新幹線の新型車両公開",
        "publisher": "マイナビニュース",
        "url": "https://news.mynavi.jp/article/20230224-e8/",
        "language": "ja",
        "date": "2023-02-24",
        "locator": "G1 formation and pantograph description",
        "supports": "G1 7-car 5M2T; aluminium body, pantographs on cars 12 and 16; Kawasaki/Hitachi manufacturers.",
        "checked": "2026-11-07"
      },
      "e2guide": {
        "title": "E2系 · JR東日本の列車たち",
        "publisher": "JR東日本",
        "url": "https://www.jreast.co.jp/train/shinkan/e2.html",
        "language": "ja",
        "date": null,
        "locator": "基本情報・車両編成",
        "supports": "Operator series context, operating capability, design features and formation.",
        "checked": "2026-11-07"
      },
      "e3guide": {
        "title": "E3系 · JR東日本の列車たち",
        "publisher": "JR東日本",
        "url": "https://www.jreast.co.jp/train/shinkan/e3.html",
        "language": "ja",
        "date": null,
        "locator": "基本情報・車両編成",
        "supports": "Operator series context, operating capability, design features and formation.",
        "checked": "2026-11-07"
      },
      "e5guide": {
        "title": "E5系 · JR東日本の列車たち",
        "publisher": "JR東日本",
        "url": "https://www.jreast.co.jp/train/shinkan/e5.html",
        "language": "ja",
        "date": null,
        "locator": "基本情報・車両編成",
        "supports": "Operator series context, operating capability, design features and formation.",
        "checked": "2026-11-07"
      },
      "e6guide": {
        "title": "E6系 · JR東日本の列車たち",
        "publisher": "JR東日本",
        "url": "https://www.jreast.co.jp/train/shinkan/e6.html",
        "language": "ja",
        "date": null,
        "locator": "基本情報・車両編成",
        "supports": "Operator series context, operating capability, design features and formation.",
        "checked": "2026-11-07"
      },
      "e7guide": {
        "title": "E7系 · JR東日本の列車たち",
        "publisher": "JR東日本",
        "url": "https://www.jreast.co.jp/train/shinkan/e7.html",
        "language": "ja",
        "date": null,
        "locator": "基本情報・車両編成",
        "supports": "Operator series context, operating capability, design features and formation.",
        "checked": "2026-11-07"
      },
      "e8guide": {
        "title": "E8系 · JR東日本の列車たち",
        "publisher": "JR東日本",
        "url": "https://www.jreast.co.jp/train/shinkan/e8.html",
        "language": "ja",
        "date": null,
        "locator": "基本情報・車両編成",
        "supports": "Operator series context, operating capability, design features and formation.",
        "checked": "2026-11-07"
      }
    }
  },
  "engineering": {
    "record": {
      "scope": {
        "en": "E8 operator features · March 2025; manufacturer engineering description · May 2026",
        "ja": "E8系公式機能紹介（2025年3月）とメーカー技術紹介（2026年5月）"
      },
      "facts": [
        {
          "label": {
            "en": "Bogie snow protection",
            "ja": "台車部の着雪対策"
          },
          "value": {
            "en": "Heaters fitted to the bogie area",
            "ja": "台車部にヒーターを搭載"
          },
          "sources": [
            "east:east-e8-launch"
          ],
          "locator": "サービス品質の向上"
        },
        {
          "label": {
            "en": "Ride control",
            "ja": "乗り心地制御"
          },
          "value": {
            "en": "Full active suspension on every car",
            "ja": "全車フルアクティブサスペンション"
          },
          "sources": [
            "east:east-e8-launch"
          ],
          "locator": "乗り心地の向上"
        },
        {
          "label": {
            "en": "Toilet resilience",
            "ja": "停電時のトイレ"
          },
          "value": {
            "en": "Battery power keeps selected flush toilets usable during prolonged outages",
            "ja": "長時間停電時は一部トイレをバッテリー電源に切替"
          },
          "sources": [
            "east:east-e8-launch"
          ],
          "locator": "サービス品質の向上"
        },
        {
          "label": {
            "en": "Bogie structure",
            "ja": "台車構造"
          },
          "value": {
            "en": "Bolsterless bogies with active suspension",
            "ja": "アクティブサスペンションを備えたボルスタレス台車"
          },
          "sources": [
            "east:east-e8-hitachi2026"
          ],
          "locator": "§4"
        }
      ],
      "insights": [
        {
          "title": {
            "en": "Small systems that matter in disruption",
            "ja": "運行が乱れた時に効く設備"
          },
          "text": {
            "en": "The bogie heaters address snow adhesion; battery-backed toilet power preserves a passenger function during a long outage. The latter is a service-power feature, not a claim of battery traction.",
            "ja": "台車部ヒーターは着雪を抑え、トイレの電池給電は長い停電中の利用を支える。トイレ用の給電機能であり、蓄電池で列車を走らせるという意味ではない。"
          },
          "sources": [
            "east:east-e8-launch"
          ],
          "locator": "サービス品質の向上"
        },
        {
          "title": {
            "en": "Common parts as a maintenance strategy",
            "ja": "部品共通化で保守を支える"
          },
          "text": {
            "en": "Hitachi identifies E6-based configuration and shared parts as measures to improve reliability and reduce maintenance cost. Its E8 main converter also follows the traction-system approach of E5–E7; this does not establish identical individual motor ratings.",
            "ja": "日立はE6系を基にした構成と部品共通化を、品質確保・保守費低減の手段として説明している。主変換装置もE5〜E7系と同じ駆動システムを採用するが、個々の主電動機定格が同一とは断定できない。"
          },
          "sources": [
            "east:east-e8-hitachi2026"
          ],
          "locator": "§4"
        }
      ],
      "gaps": [
        "Exact E8 motor rating and inverter semiconductor specification await a directly readable primary equipment table."
      ]
    },
    "sources": {
      "east:east-e8-launch": {
        "title": "SERIES E8 2024.3.16 DEBUT",
        "publisher": "JR東日本",
        "url": "https://www.jreast.co.jp/sendai/yamagata_e8_debut/",
        "date": "2025-03",
        "language": "ja",
        "locator": "特徴 / 乗り心地の向上 / サービス品質の向上; page states March 2025 information",
        "checked": "2026-11-07"
      },
      "east:east-e8-hitachi2026": {
        "title": "Hitachi Technology 2026 — Railway Systems",
        "publisher": "Hitachi",
        "url": "https://www.hitachi.com/en/insights/hitachihyoron/hitachi-technology/2026/09/",
        "date": "2026-05-28",
        "language": "en",
        "locator": "§4 E8 Shinkansen Rolling Stock for JR East",
        "checked": "2026-11-07"
      }
    },
    "checked": "2026-11-07"
  },
  "literature": []
}