{
  "edition": "2026-11-07",
  "id": "kamome-n700s",
  "locale": "ja",
  "url": "https://senroam.com/ja/trains/kamome-n700s/",
  "name": "N700S · Nishi Kyūshū · Kamome",
  "summary": "N700S · Nishi Kyūshū · Kamome · 屋根と側帯の色の組み合わせに注目。",
  "type": "train",
  "questions": [],
  "sources": [
    {
      "url": "https://www.jrkyushu.co.jp/train/kamome/",
      "checked": "2026-11-07",
      "lang": "ja"
    }
  ],
  "detail": "屋根と側帯の色の組み合わせに注目。",
  "technical": {
    "record": {
      "variant": "N700S-8000 Y · 6両",
      "as_of": "2022-07-14",
      "facts": [
        {
          "field": "formation",
          "en": "6 powered cars (6M)",
          "ja": "全6両が電動車（6M）",
          "source": "kamome2022",
          "scope": "six-car Kamome design",
          "value": 6,
          "unit": "powered cars"
        },
        {
          "field": "unit",
          "en": "Two units of 3 cars",
          "ja": "3両1ユニット × 2",
          "source": "kamome2022",
          "scope": "traction grouping",
          "value": 3,
          "unit": "cars/unit"
        },
        {
          "field": "motor",
          "en": "6-pole motors",
          "ja": "6極モーター",
          "source": "kamome2022",
          "scope": "Kamome traction motors",
          "value": 6,
          "unit": "poles"
        },
        {
          "field": "control",
          "en": "Silicon-carbide (SiC) power devices",
          "ja": "SiC素子を採用した主変換装置",
          "source": "kamome2022",
          "scope": "main converters",
          "value": null,
          "unit": null
        },
        {
          "field": "cooling",
          "en": "Train-draft cooling without a blower",
          "ja": "走行風冷却方式（ブロアレス）",
          "source": "kamome2022",
          "scope": "main converters",
          "value": null,
          "unit": null
        },
        {
          "field": "gears",
          "en": "Double-helical gears",
          "ja": "ヤマバ歯車",
          "source": "kamome2022",
          "scope": "drive gearing",
          "value": null,
          "unit": null
        },
        {
          "field": "battery",
          "en": "Lithium-ion battery system for movement to an evacuation location after a power failure",
          "ja": "停電時、安全に避難できる場所へ移動するリチウムイオン電池の自走システム",
          "source": "kamome2022",
          "scope": "emergency movement",
          "value": null,
          "unit": null
        },
        {
          "field": "brake",
          "en": "Electrically commanded air braking with regenerative braking",
          "ja": "回生ブレーキ併用電気指令式空気ブレーキ",
          "source": "kamome2022",
          "scope": "braking",
          "value": null,
          "unit": null
        }
      ]
    },
    "sources": {
      "toshiba2009": {
        "title": "国内新幹線向け 車両システムと電気品",
        "publisher": "東芝",
        "url": "https://www.global.toshiba/content/dam/toshiba/migration/corp/techReviewAssets/tech/review/2009/09/64_09pdf/a06.pdf",
        "language": "ja",
        "date": "2009-09",
        "locator": "pp. 21–22, Table 3, §§3.1–4, Figure 6",
        "checked": "2026-11-07"
      },
      "toshiba2004": {
        "title": "九州旅客鉄道（株）800系新幹線電車向け主要電気品",
        "publisher": "東芝",
        "url": "https://www.global.toshiba/content/dam/toshiba/migration/corp/techReviewAssets/tech/review/2004/03/59_03pdf/08.pdf",
        "language": "ja",
        "date": "2004-03",
        "locator": "p. 72, 交通システム",
        "checked": "2026-11-07"
      },
      "kamome2022": {
        "title": "N700S「かもめ」と西九州新幹線",
        "publisher": "九州旅客鉄道株式会社",
        "url": "https://www.aluminum.or.jp/railway_vehicle/meeting/19/files/19_04.pdf",
        "language": "ja",
        "date": "2022-07-14",
        "locator": "slides 6–8 and 18, formation, comparison, performance and drive system",
        "checked": "2026-11-07"
      },
      "orange2018": {
        "title": "一般車両",
        "publisher": "肥薩おれんじ鉄道",
        "url": "https://www.hs-orange.com/page87.html",
        "language": "ja",
        "date": "2018-03-15",
        "locator": "HSOR-100A / HSOR-150A 諸元表",
        "checked": "2026-11-07"
      }
    }
  },
  "engineering": {
    "record": {
      "scope": {
        "en": "N700S-8000 six-car Kamome · operator briefing, July 2022",
        "ja": "N700S8000番台6両かもめ · 2022年7月の事業者資料"
      },
      "facts": [
        {
          "label": {
            "en": "Axlebox support",
            "ja": "軸箱支持方式"
          },
          "value": {
            "en": "Wing type; changed from R-series axle-beam type",
            "ja": "ウィング式・R編成の軸ハリ式から変更"
          },
          "sources": [
            "west:west-kamome"
          ],
          "page": 8
        },
        {
          "label": {
            "en": "Normal traction setting",
            "ja": "健全時の主回路制御"
          },
          "value": {
            "en": "Reduced output setting uses the all-powered formation’s reserve",
            "ja": "全車電動車の余力を生かし性能を落として制御"
          },
          "sources": [
            "west:west-kamome"
          ],
          "page": 9
        },
        {
          "label": {
            "en": "One motor car isolated",
            "ja": "1M車開放時"
          },
          "value": {
            "en": "Raised current limit restores the stated sixteen-car N700S performance level",
            "ja": "限流値を増し、16両N700Sと同等の性能を確保"
          },
          "sources": [
            "west:west-kamome"
          ],
          "page": 9
        },
        {
          "label": {
            "en": "Earthquake brake trigger",
            "ja": "地震ブレーキの契機"
          },
          "value": {
            "en": "Overhead power-loss detection; stronger deceleration than emergency braking",
            "ja": "架線停電を検知し、非常ブレーキより減速度を増大"
          },
          "sources": [
            "west:west-kamome"
          ],
          "page": 9
        }
      ],
      "insights": [
        {
          "title": {
            "en": "A short train with its own brake design",
            "ja": "短編成に合わせたブレーキ設計"
          },
          "text": {
            "en": "Six cars mean fewer braking axles. JR Kyūshū explicitly considered wheel-slide stopping-distance growth and followed the eight-car R-series approach rather than simply copying the sixteen-car train.",
            "ja": "6両編成ではブレーキを負担する軸数が少ない。JR九州は滑走時の制動距離増大を考慮し、16両車の仕様をそのまま使わず、8両R編成と同様の考え方を採った。"
          },
          "sources": [
            "west:west-kamome"
          ],
          "page": 9
        }
      ],
      "gaps": [
        "This briefing does not establish a per-motor continuous kW rating."
      ]
    },
    "sources": {
      "west:west-kamome": {
        "title": "N700S「かもめ」と西九州新幹線",
        "publisher": "JR九州",
        "url": "https://www.aluminum.or.jp/railway_vehicle/meeting/19/files/19_04.pdf",
        "date": "2022-07-14",
        "language": "ja",
        "locator": "Slides 7–9; configuration, changes and performance",
        "checked": "2026-11-07"
      }
    },
    "checked": "2026-11-07"
  },
  "literature": []
}