{
  "edition": "2026-11-07",
  "id": "jrk-817",
  "locale": "vi",
  "url": "https://senroam.com/vi/trains/jrk-817/",
  "name": "817 · Fukuhoku Yutaka · 福北ゆたか線",
  "summary": "817 · Fukuhoku Yutaka · 福北ゆたか線 · Hãy đếm số toa trong một bộ tàu. Dòng 817 đời đầu có hai toa, còn phân dòng 3000 có ba toa. Ghép các bộ tàu với nhau sẽ tạo thành đoàn dài hơn.",
  "type": "train",
  "questions": [],
  "sources": [
    {
      "url": "https://railway-catalog.com/02/0105817.html",
      "checked": "2026-11-07",
      "lang": "ja"
    }
  ],
  "detail": "Hãy đếm số toa trong một bộ tàu. Dòng 817 đời đầu có hai toa, còn phân dòng 3000 có ba toa. Ghép các bộ tàu với nhau sẽ tạo thành đoàn dài hơn.",
  "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": []
}