{
  "edition": "2026-11-07",
  "id": "jrk-817",
  "locale": "ko",
  "url": "https://senroam.com/ko/trains/jrk-817/",
  "name": "817 · Fukuhoku Yutaka · 福北ゆたか線",
  "summary": "817 · Fukuhoku Yutaka · 福北ゆたか線 · Count the cars in a single set. Early 817s have two, while the 3000 subseries has three. Coupled sets can make a longer train.",
  "type": "train",
  "questions": [],
  "sources": [
    {
      "url": "https://railway-catalog.com/02/0105817.html",
      "checked": "2026-11-07",
      "lang": "ja"
    }
  ],
  "detail": "Count the cars in a single set. Early 817s have two, while the 3000 subseries has three. Coupled sets can make a longer train.",
  "technical": {
    "record": [
      [
        "817 · 2003",
        2,
        [
          "Aluminium · A-train",
          "アルミ · A-train"
        ],
        "817"
      ]
    ],
    "sources": [
      {
        "id": "813",
        "title": "813系電車ロングシート化します",
        "publisher": "JR九州",
        "url": "https://www.jrkyushu.co.jp/news/__icsFiles/afieldfile/2023/11/30/231130_813_long-seat.pdf",
        "source_language": "ja",
        "effective_date": "2023-11-30",
        "locator": "§1",
        "supports": "Converted three-car set; 120 longitudinal and 28 box seats.",
        "checked": "2026-11-07",
        "rights": "Consulted for facts. No source text or artwork redistributed."
      },
      {
        "id": "815",
        "title": "社会・産業・家庭",
        "publisher": "日立評論",
        "url": "https://www.hitachihyoron.com/jp/pdf/2000/01/2000_01_06.pdf",
        "source_language": "ja",
        "effective_date": "2000-01",
        "locator": "九州旅客鉄道株式会社納め815系電車",
        "supports": "A-train, FSW aluminium double-skin body, IGBT equipment; delivered June–September 1999.",
        "checked": "2026-11-07",
        "rights": "Consulted for facts. No source text or artwork redistributed."
      },
      {
        "id": "817",
        "title": "最近の鉄道車両 A-train",
        "publisher": "日立評論",
        "url": "https://www.hitachihyoron.com/jp/pdf/2003/08/2003_08_02.pdf",
        "source_language": "ja",
        "effective_date": "2003-08",
        "locator": "Opening figure, 817系電車",
        "supports": "817 belongs to the A-train aluminium vehicle system.",
        "checked": "2026-11-07",
        "rights": "Consulted for facts. No source text or artwork redistributed."
      },
      {
        "id": "821",
        "title": "第8回グリーンボンド レポーティング",
        "publisher": "JR九州",
        "url": "https://www.jrkyushu.co.jp/company/ir/library/greenbond/pdf/241218_8th_greenbond_reporting_jp.pdf",
        "source_language": "ja",
        "effective_date": "2024-03-31",
        "locator": "821系車両新製",
        "supports": "SiC main circuit; March 2019 service entry Kokura–Arao.",
        "checked": "2026-11-07",
        "rights": "Consulted for facts. No source text or artwork redistributed."
      },
      {
        "id": "701",
        "title": "701系",
        "publisher": "JR東日本",
        "url": "https://www.jreast.co.jp/train/local/701.html",
        "source_language": "ja",
        "effective_date": null,
        "locator": "車両紹介",
        "supports": "AC train; standard-gauge variants for mini-Shinkansen corridors.",
        "checked": "2026-11-07",
        "rights": "Consulted for facts. No source text or artwork redistributed."
      },
      {
        "id": "e127",
        "title": "E127系",
        "publisher": "JR東日本",
        "url": "https://www.jreast.co.jp/train/local/e127.html",
        "source_language": "ja",
        "effective_date": null,
        "locator": "車両紹介",
        "supports": "Two-car minimum; three doors per side; semi-automatic door operation.",
        "checked": "2026-11-07",
        "rights": "Consulted for facts. No source text or artwork redistributed."
      },
      {
        "id": "e129",
        "title": "E129系",
        "publisher": "JR東日本",
        "url": "https://www.jreast.co.jp/train/local/e129.html",
        "source_language": "ja",
        "effective_date": null,
        "locator": "基本情報・車両紹介",
        "supports": "DC; 110 km/h; E233 technology.",
        "checked": "2026-11-07",
        "rights": "Consulted for facts. No source text or artwork redistributed."
      },
      {
        "id": "e131",
        "title": "相模線E131系車両の概要",
        "publisher": "JR東日本",
        "url": "https://www.jreast.co.jp/press/2021/yokohama/20210917_y1.pdf",
        "source_language": "ja",
        "effective_date": "2021-09-17",
        "locator": "別紙2 comparison table",
        "supports": "Sagami 4 cars 2M2T; Boso/Kashima 2 cars 1M1T; 2950 mm; stainless steel; 110 km/h; SiC VVVF, enclosed induction motors.",
        "checked": "2026-11-07",
        "rights": "Consulted for facts. No source text or artwork redistributed."
      },
      {
        "id": "e721",
        "title": "E721系",
        "publisher": "JR東日本",
        "url": "https://www.jreast.co.jp/train/local/e721.html",
        "source_language": "ja",
        "effective_date": null,
        "locator": "基本情報・車両紹介",
        "supports": "120 km/h; 0,500,1000 subseries, lower passenger floor.",
        "checked": "2026-11-07",
        "rights": "Consulted for facts. No source text or artwork redistributed."
      },
      {
        "id": "ginza",
        "title": "東京メトロ 銀座線1000系 主要諸元",
        "publisher": "東京メトロ",
        "url": "https://www.tokyometro.jp/corporate/enterprise/passenger_rail/cars/working/ginza_1000/pdf/specifications.pdf",
        "source_language": "ja",
        "effective_date": "2023-03-31",
        "locator": "p.1, specification table",
        "supports": "Six cars; 16000 ×2598 ×3465 mm; PMSM, VVVF; 80 km/h design speed; 3.3 km/h/s acceleration.",
        "checked": "2026-11-07",
        "rights": "Consulted for facts. No source text or artwork redistributed."
      },
      {
        "id": "tram",
        "title": "フォトギャラリー",
        "publisher": "鹿児島市交通局",
        "url": "https://www.kotsu-city-kagoshima.jp/cust-photo/",
        "source_language": "ja",
        "effective_date": null,
        "locator": "1000形・7500形 vehicle specification tables",
        "supports": "7501–7504 dimensions and motor rating; 1011 dimensions.",
        "checked": "2026-11-07",
        "rights": "Consulted for facts. No source text or artwork redistributed."
      }
    ]
  },
  "engineering": {
    "record": {
      "scope": {
        "en": "Original auxiliary supply and later 2000/3000-subseries traction converter are distinguished.",
        "ja": "新製初期の補助電源と2000・3000番代の主変換装置を区別。"
      },
      "facts": [
        {
          "label": {
            "en": "Auxiliary input",
            "ja": "補助電源入力"
          },
          "value": {
            "en": "Original two-car equipment: AC 440 V from the transformer tertiary winding.",
            "ja": "初期2両編成用装置：主変圧器3次巻線の交流440 Vを入力。"
          },
          "sources": [
            "regional:reg-817-siv"
          ]
        },
        {
          "label": {
            "en": "Auxiliary outputs",
            "ja": "補助電源出力"
          },
          "value": {
            "en": "DC 100 V, 8 kW; two single-phase AC 100 V outputs, 2.5 kVA each.",
            "ja": "直流100 V・8 kWと、単相交流100 V・2.5 kVAを2出力。"
          },
          "sources": [
            "regional:reg-817-siv"
          ]
        },
        {
          "label": {
            "en": "Later converter",
            "ja": "後年の主変換装置"
          },
          "value": {
            "en": "2000/3000 subseries: new three-level topology and two independent groups.",
            "ja": "2000・3000番代：新3レベルトポロジー、独立した2群構成。"
          },
          "sources": [
            "regional:reg-817-converter"
          ]
        }
      ],
      "insights": [
        {
          "title": {
            "en": "Keeping auxiliary AC alive",
            "ja": "無電区間でも補助交流を維持"
          },
          "text": {
            "en": "In neutral sections the original supply uses the DC 100 V battery to maintain AC 100 V output; this is auxiliary continuity, not battery traction.",
            "ja": "初期装置は無電区間で直流100 V蓄電池から交流100 V出力を維持する。走行用ではなく補助電源の継続機能。"
          },
          "sources": [
            "regional:reg-817-siv"
          ]
        }
      ],
      "gaps": [
        "Do not transfer the adjacent E233 converter mass-reduction table in the 2012 paper to the 817.",
        "Original SIV specifications should not be generalized to every later subseries."
      ]
    },
    "sources": {
      "regional:reg-817-siv": {
        "title": "九州旅客鉄道（株）817系電車用補助電源装置",
        "publisher": "東洋電機製造・東洋電機技報108",
        "url": "https://dl.ndl.go.jp/view/prepareDownload?contentNo=1&itemId=info%3Andljp%2Fpid%2F11015093",
        "date": "2001-09",
        "language": "ja",
        "locator": "pp.28–29（国立国会図書館保存）",
        "checked": "2026-11-07"
      },
      "regional:reg-817-converter": {
        "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": "日立評論",
        "url": "https://www.hitachihyoron.com/jp/pdf/2012/06/2012_06_04.pdf",
        "date": "2012-06",
        "language": "ja",
        "locator": "§2.2、pp.27–28",
        "checked": "2026-11-07"
      }
    },
    "checked": "2026-11-07"
  },
  "literature": []
}