{
  "metadata": {
    "dataset_key": "jddg-2025-v9.0",
    "dataset_revision": "0.23",
    "topic_slug": "power-quality",
    "topic_label_ja": "電源品質",
    "topic_label_en": "Power Quality",
    "requirement_count": 40,
    "summary_layer_version": "1.1",
    "terminology_policy_version": "1.1",
    "display_text_revision": "1.1"
  },
  "description_ja": "電源品質に関係するJDDG要件を、設計上の確認項目ごとに分類しています。",
  "focus_items_ja": [
    "受電電源の品質確認",
    "中電圧設備とフェロ共振（鉄共振）",
    "高調波",
    "周波数・周波数変換",
    "VFD・可変速ドライブ",
    "過渡性能",
    "敏感な電子機器",
    "電圧整合・相バランス"
  ],
  "related_terms": [
    {
      "term_en": "Medium Voltage (MV)",
      "term_ja": "中電圧",
      "description_ja": "低電圧と高電圧の間に位置する電圧階級を示す用語です。IECでは固定した単一の電圧範囲としてではなく、地域・歴史・慣行によって境界が異なる概念として定義されています。",
      "portal_note_ja": "日本の「高圧」「特別高圧」と単純に一対一対応させず、JDDG原典の電圧値と参照規格を確認します。",
      "source_label": "IEC Electropedia IEV 601-01-28",
      "source_url": "https://std.iec.ch/iev/iev.nsf/display?openform&ievref=601-01-28"
    },
    {
      "term_en": "Ferroresonance",
      "term_ja": "フェロ共振（鉄共振）",
      "description_ja": "鉄心を持つ非線形インダクタンスと系統の静電容量などが組み合わさって生じる非線形な共振現象です。中電圧・高電圧系統の計器用変圧器等で問題となり、異常過電圧や機器損傷につながる場合があります。",
      "portal_note_ja": "JDDGで鉄共振への配慮が示される場合は、系統構成、変圧器・計器用変圧器、開閉方式、接地方式などの条件と合わせて確認します。",
      "source_label": "IEC TR 61869-102:2014",
      "source_url": "https://webstore.iec.ch/en/publication/6048"
    }
  ],
  "requirements": [
    {
      "requirement_id": "JDDG25-14.2-R06",
      "section": "14.2",
      "title_ja": "設計基準",
      "title_en": "DESIGN CRITERIA",
      "summary_ja": "電力を必要とする機器・装置は、正しい電源周波数に対応するよう設計することを求めています。",
      "source_fact_en": "Equipment and devices requiring electrical power shall be designed for the correct electrical frequency.",
      "strength": "mandatory",
      "strength_ja": "必須",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.2-R06/"
    },
    {
      "requirement_id": "JDDG25-14.6.3-R04",
      "section": "14.6.3",
      "title_ja": "高度ディレーティング",
      "title_en": "ALTITUDE DERATING",
      "summary_ja": "産業施設の発電機容量選定では、周波数偏差最大10%、電圧偏差最大20%を目安とすることを示しています。",
      "source_fact_en": "Industrial-facility generator sizing guidance uses 10 percent maximum frequency deviation and 20 percent maximum voltage deviation.",
      "strength": "guidance",
      "strength_ja": "指針",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.6.3-R04/"
    },
    {
      "requirement_id": "JDDG25-14.6.3-R05",
      "section": "14.6.3",
      "title_ja": "高度ディレーティング",
      "title_en": "ALTITUDE DERATING",
      "summary_ja": "事務所・一般施設の発電機容量選定では、周波数偏差最大8%、電圧偏差最大15%を目安とすることを示しています。",
      "source_fact_en": "Office/general-facility generator sizing guidance uses 8 percent maximum frequency deviation and 15 percent maximum voltage deviation.",
      "strength": "guidance",
      "strength_ja": "指針",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.6.3-R05/"
    },
    {
      "requirement_id": "JDDG25-14.6.3-R06",
      "section": "14.6.3",
      "title_ja": "高度ディレーティング",
      "title_en": "ALTITUDE DERATING",
      "summary_ja": "コンピュータ施設の発電機容量選定では、周波数偏差最大5%、電圧偏差最大10%を目安とすることを示しています。",
      "source_fact_en": "Computer-facility generator sizing guidance uses 5 percent maximum frequency deviation and 10 percent maximum voltage deviation.",
      "strength": "guidance",
      "strength_ja": "指針",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.6.3-R06/"
    },
    {
      "requirement_id": "JDDG25-14.10.7.6-R02",
      "section": "14.10.7.6",
      "title_ja": "電力会社電源",
      "title_en": "UTILITY POWER",
      "summary_ja": "案件基準に通常電源の電源品質が示されていない場合は、その品質を確認することを推奨しています。",
      "source_fact_en": "Power quality of the normal source should be verified when not furnished in project criteria.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.10.7.6-R02/"
    },
    {
      "requirement_id": "JDDG25-14.10.7.7-R01",
      "section": "14.10.7.7",
      "title_ja": "発電機―常用電源および待機電源",
      "title_en": "GENERATORS – PRIME POWER AND STANDBY",
      "summary_ja": "頻繁かつ大幅な負荷変動を受ける待機発電機には、より厳しい過渡性能および試験基準を適用することを推奨しています。",
      "source_fact_en": "A standby generator intended for frequent drastic load shifts should use more stringent transient-performance and testing standards.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design",
        "commissioning"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.10.7.7-R01/"
    },
    {
      "requirement_id": "JDDG25-14.10.8.3-G01",
      "section": "14.10.8.3",
      "title_ja": "中電圧―フェロ共振（鉄共振）に関する考慮事項",
      "title_en": "MEDIUM VOLTAGE – FERRORESONANCE CONSIDERATIONS",
      "summary_ja": "フェロ共振（鉄共振）は持続的な過電圧を生じ、機器寿命の短縮や故障を引き起こし、特に変圧器や金属酸化物避雷器に重大な損傷を与える可能性があると示しています。",
      "source_fact_en": "The source states that ferroresonance can impose sustained overvoltage that shortens component life or causes failure, with severe damage particularly to transformers and metal-oxide arresters.",
      "strength": "guidance",
      "strength_ja": "指針",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.10.8.3-G01/"
    },
    {
      "requirement_id": "JDDG25-14.10.8.3-G02",
      "section": "14.10.8.3",
      "title_ja": "中電圧―フェロ共振（鉄共振）に関する考慮事項",
      "title_en": "MEDIUM VOLTAGE – FERRORESONANCE CONSIDERATIONS",
      "summary_ja": "フェロ共振（鉄共振）のリスク要因として、単相開閉・過電流動作、一次デルタ結線変圧器、長い地中一次ケーブル、変圧器容量に対して高い一次電圧、二次側の無負荷・軽負荷を挙げています。",
      "source_fact_en": "Source-identified ferroresonance risk factors include single-phase switching or overcurrent operation, delta-primary transformers, long underground primary cable, high primary voltage relative to transformer size, and unloaded or lightly loaded secondaries.",
      "strength": "guidance",
      "strength_ja": "指針",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.10.8.3-G02/"
    },
    {
      "requirement_id": "JDDG25-14.10.8.3-G03",
      "section": "14.10.8.3",
      "title_ja": "中電圧―フェロ共振（鉄共振）に関する考慮事項",
      "title_en": "MEDIUM VOLTAGE – FERRORESONANCE CONSIDERATIONS",
      "summary_ja": "フェロ共振（鉄共振）の対策として、一次側の接地Y系統・変圧器、三相連動開閉・過電流機器、変圧器位置での開閉、負荷を接続した状態での開閉を挙げています。",
      "source_fact_en": "Source-identified mitigating measures include grounded-wye primary systems and transformers, ganged switching and overcurrent equipment, switching at the transformer, and switching with the transformer loaded.",
      "strength": "guidance",
      "strength_ja": "指針",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.10.8.3-G03/"
    },
    {
      "requirement_id": "JDDG25-14.11.6-R02",
      "section": "14.11.6",
      "title_ja": "パネルボード（分電盤）",
      "title_en": "PANELBOARDS",
      "summary_ja": "敏感な負荷は高調波発生機器からさらに分離する必要がある場合があり、モータ負荷はまとめて配置できることを示しています。",
      "source_fact_en": "Sensitive loads may warrant further separation from harmonic-generating equipment, and motor loads may be grouped.",
      "strength": "guidance",
      "strength_ja": "指針",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.6-R02/"
    },
    {
      "requirement_id": "JDDG25-14.11.6-R03",
      "section": "14.11.6",
      "title_ja": "パネルボード（分電盤）",
      "title_en": "PANELBOARDS",
      "summary_ja": "分電盤回路は、可能な範囲で各相の負荷を平衡させることを推奨しています。",
      "source_fact_en": "Panel circuits should be phase-balanced to the extent practical.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.6-R03/"
    },
    {
      "requirement_id": "JDDG25-14.11.6.2-R02",
      "section": "14.11.6.2",
      "title_ja": "母線定格",
      "title_en": "BUS RATINGS",
      "summary_ja": "非線形負荷が主体の分電盤には、200%容量の中性線母線を設けることを推奨しています。",
      "source_fact_en": "Panelboards serving predominantly nonlinear loads should have a 200 percent neutral bar.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.6.2-R02/"
    },
    {
      "requirement_id": "JDDG25-14.11.6.5-R01",
      "section": "14.11.6.5",
      "title_ja": "相バランス",
      "title_en": "PHASE BALANCE",
      "summary_ja": "A相に負荷が偏りやすい傾向を補正するため、分電盤配置を確認し、必要に応じて予備回路や大きな負荷をB相・C相へ移すことを推奨しています。",
      "source_fact_en": "Designers should review panel layouts and shift spares or heavier loads to phases B and C as needed to correct the usual tendency to overload Phase A.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.6.5-R01/"
    },
    {
      "requirement_id": "JDDG25-14.11.7.3-R01",
      "section": "14.11.7.3",
      "title_ja": "エポキシ封止型",
      "title_en": "EPOXY-ENCAPSULATED TYPE",
      "summary_ja": "敏感な負荷をまとめて専用変圧器から給電できる場合は、絶縁変圧器の使用を検討することを推奨しています。",
      "source_fact_en": "Isolation transformers should be considered where sensitive loads can be grouped and served by a dedicated transformer.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.7.3-R01/"
    },
    {
      "requirement_id": "JDDG25-14.11.7.4-R01",
      "section": "14.11.7.4",
      "title_ja": "昇降圧（Buck-Boost）",
      "title_en": "BUCK-BOOST",
      "summary_ja": "施設系統と異なる電圧で設計された個別負荷に必要な場合は、昇降圧（Buck-Boost）変圧を設けることを求めています。",
      "source_fact_en": "Buck-boost transformation is to be provided where needed for individual loads designed for voltages different from the facility system.",
      "strength": "conditional_mandatory",
      "strength_ja": "条件付き必須",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.7.4-R01/"
    },
    {
      "requirement_id": "JDDG25-14.11.7.5-G01",
      "section": "14.11.7.5",
      "title_ja": "Kファクター定格機器／高調波対策",
      "title_en": "K-FACTOR RATED UNITS / HARMONIC MITIGATION",
      "summary_ja": "高調波抑制変圧器は高調波電流の大部分を相殺する一方、K定格変圧器は主として高調波による追加発熱に耐えるものであることを示しています。",
      "source_fact_en": "The source explains that harmonic-mitigation transformers cancel a significant portion of harmonic current, while K-rated transformers mainly tolerate the additional heating.",
      "strength": "guidance",
      "strength_ja": "指針",
      "applicable_phases": [],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.7.5-G01/"
    },
    {
      "requirement_id": "JDDG25-14.11.7.5-R01",
      "section": "14.11.7.5",
      "title_ja": "Kファクター定格機器／高調波対策",
      "title_en": "K-FACTOR RATED UNITS / HARMONIC MITIGATION",
      "summary_ja": "非線形高調波負荷にはKファクター（K-factor）変圧器を設け、非線形負荷50%ではK-4、100%ではK-13を指定することを求めています。",
      "source_fact_en": "K-factor transformers are to be provided for nonlinear harmonic-generating loads, with K-4 indicated for 50 percent nonlinear load and K-13 for 100 percent nonlinear load.",
      "strength": "mandatory",
      "strength_ja": "必須",
      "applicable_phases": [
        "design",
        "installation"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.7.5-R01/"
    },
    {
      "requirement_id": "JDDG25-14.11.7.5-R02",
      "section": "14.11.7.5",
      "title_ja": "Kファクター定格機器／高調波対策",
      "title_en": "K-FACTOR RATED UNITS / HARMONIC MITIGATION",
      "summary_ja": "K-13を超えるKファクター（K-factor）定格を使用する場合は、設計解析書（Design Analysis）で根拠を示すことを推奨しています。",
      "source_fact_en": "Use of K-factor ratings above K-13 should be justified in the Design Analysis.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.7.5-R02/"
    },
    {
      "requirement_id": "JDDG25-14.11.7.5-R03",
      "section": "14.11.7.5",
      "title_ja": "Kファクター定格機器／高調波対策",
      "title_en": "K-FACTOR RATED UNITS / HARMONIC MITIGATION",
      "summary_ja": "非線形負荷がある場合は、K定格変圧器に代えて高調波抑制変圧器を検討することを推奨しています。",
      "source_fact_en": "Harmonic-mitigation transformers should be considered in place of K-rated transformers where nonlinear loads are present.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.7.5-R03/"
    },
    {
      "requirement_id": "JDDG25-14.11.7.5-R04",
      "section": "14.11.7.5",
      "title_ja": "Kファクター定格機器／高調波対策",
      "title_en": "K-FACTOR RATED UNITS / HARMONIC MITIGATION",
      "summary_ja": "高調波抑制変圧器は、給電する分電盤のできるだけ近くに設置することを推奨しています。",
      "source_fact_en": "Harmonic-mitigation transformers should be installed as close as possible to the panels they feed.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design",
        "installation"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.7.5-R04/"
    },
    {
      "requirement_id": "JDDG25-14.11.8.3-R01",
      "section": "14.11.8.3",
      "title_ja": "中性線サイズ選定",
      "title_en": "NEUTRAL SIZING",
      "summary_ja": "中性線は原則として相導体と同じサイズとすることを推奨しています。",
      "source_fact_en": "Full-size neutrals should be standard practice.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.8.3-R01/"
    },
    {
      "requirement_id": "JDDG25-14.11.8.3-R03",
      "section": "14.11.8.3",
      "title_ja": "中性線サイズ選定",
      "title_en": "NEUTRAL SIZING",
      "summary_ja": "高調波発生機器では、中性線を電流が流れる導体として扱うことを求めています。",
      "source_fact_en": "For harmonic-generating equipment, the neutral must be treated as a current-carrying conductor.",
      "strength": "mandatory",
      "strength_ja": "必須",
      "applicable_phases": [
        "design",
        "installation"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.8.3-R03/"
    },
    {
      "requirement_id": "JDDG25-14.11.8.3-R04",
      "section": "14.11.8.3",
      "title_ja": "中性線サイズ選定",
      "title_en": "NEUTRAL SIZING",
      "summary_ja": "データ処理用途では、中性線を相導体より大きく選定することを求めています。",
      "source_fact_en": "In data-processing applications, the neutral must be sized larger than the phase conductors.",
      "strength": "mandatory",
      "strength_ja": "必須",
      "applicable_phases": [
        "design",
        "installation"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.8.3-R04/"
    },
    {
      "requirement_id": "JDDG25-14.11.8.3-R05",
      "section": "14.11.8.3",
      "title_ja": "中性線サイズ選定",
      "title_en": "NEUTRAL SIZING",
      "summary_ja": "データ処理用途では、高調波解析または現地データで小さいサイズを妥当とできる場合を除き、中性線を相導体の少なくとも200%で選定することを求めています。",
      "source_fact_en": "For data-processing applications, the neutral is to be sized at a minimum of 200 percent of phase conductors unless harmonic analysis or field data supports a smaller size.",
      "strength": "conditional_mandatory",
      "strength_ja": "条件付き必須",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.8.3-R05/"
    },
    {
      "requirement_id": "JDDG25-14.11.8.3-R06",
      "section": "14.11.8.3",
      "title_ja": "中性線サイズ選定",
      "title_en": "NEUTRAL SIZING",
      "summary_ja": "中性線を太くした単相分岐回路では、他回路と中性線を共用しないことを推奨しています。",
      "source_fact_en": "Single-phase branch circuits with oversized neutrals should not share neutrals with other circuits.",
      "strength": "recommended_against",
      "strength_ja": "非推奨",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.8.3-R06/"
    },
    {
      "requirement_id": "JDDG25-14.11.8.4-R01",
      "section": "14.11.8.4",
      "title_ja": "ディレーティング",
      "title_en": "DERATING",
      "summary_ja": "非線形負荷では、導体本数による低減係数を適用する際、中性線を相導体として数えることを求めています。",
      "source_fact_en": "For nonlinear loads, the neutral must be treated as a phase conductor when applying conductor-count derating.",
      "strength": "mandatory",
      "strength_ja": "必須",
      "applicable_phases": [
        "design",
        "installation"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.8.4-R01/"
    },
    {
      "requirement_id": "JDDG25-14.11.9.4-R02",
      "section": "14.11.9.4",
      "title_ja": "露出形配線路およびワイヤウェイ",
      "title_en": "SURFACE MOUNTED RACEWAY AND WIREWAYS",
      "summary_ja": "記載された多口露出レースウェイ構成には、並行する機器接地・静電気接地バーを設けることを求めています。",
      "source_fact_en": "A parallel equipment/static ground bar is to be provided with the described multi-outlet surface-raceway arrangement.",
      "strength": "mandatory",
      "strength_ja": "必須",
      "applicable_phases": [
        "design",
        "installation"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.9.4-R02/"
    },
    {
      "requirement_id": "JDDG25-14.11.10.2-R01",
      "section": "14.11.10.2",
      "title_ja": "電圧定格",
      "title_en": "VOLTAGE RATINGS",
      "summary_ja": "モータ電圧を指定する場合は、公称線間電圧ではなくモータ定格電圧で表記することを求めています。",
      "source_fact_en": "When motor voltage ratings are specified, the rating is to refer to the motor rating rather than the nominal line voltage.",
      "strength": "mandatory",
      "strength_ja": "必須",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.10.2-R01/"
    },
    {
      "requirement_id": "JDDG25-14.11.10.3-G01",
      "section": "14.11.10.3",
      "title_ja": "可変速駆動装置（ASD）",
      "title_en": "ADJUSTABLE SPEED DRIVES (ASDS)",
      "summary_ja": "可変周波数ドライブ（VFD）は高調波を発生し、入力側の他負荷への影響、出力側効率の低下、低温始動時の発振を生じる可能性があることを示しています。",
      "source_fact_en": "The source states that variable-frequency drives generate harmonics that can affect other input-side loads, reduce output-side efficiency, and may oscillate on cold start.",
      "strength": "guidance",
      "strength_ja": "指針",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.10.3-G01/"
    },
    {
      "requirement_id": "JDDG25-14.11.10.3-R01",
      "section": "14.11.10.3",
      "title_ja": "可変速駆動装置（ASD）",
      "title_en": "ADJUSTABLE SPEED DRIVES (ASDS)",
      "summary_ja": "ASDの種類選定および配置は、機械設計者と調整することを求めています。",
      "source_fact_en": "ASD type selection and layout are to be coordinated with the mechanical designer.",
      "strength": "mandatory",
      "strength_ja": "必須",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.10.3-R01/"
    },
    {
      "requirement_id": "JDDG25-14.11.10.3-R02",
      "section": "14.11.10.3",
      "title_ja": "可変速駆動装置（ASD）",
      "title_en": "ADJUSTABLE SPEED DRIVES (ASDS)",
      "summary_ja": "VFDを使用する場合の電源品質維持のため、フィルタ、絶縁変圧器、負荷のグループ化を検討することを推奨しています。",
      "source_fact_en": "Filtering, isolation transformers, and load grouping should be considered to maintain power quality with VFD applications.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.10.3-R02/"
    },
    {
      "requirement_id": "JDDG25-14.11.10.12-G01",
      "section": "14.11.10.12",
      "title_ja": "周波数変換器",
      "title_en": "FREQUENCY CONVERTERS",
      "summary_ja": "周波数変換器は、航空機および関連する整備・試験機器へ400 Hz電源を供給する用途で一般に使用されることを示しています。",
      "source_fact_en": "Frequency converters are typically used to supply 400 Hz power to aircraft and associated maintenance and test equipment.",
      "strength": "guidance",
      "strength_ja": "指針",
      "applicable_phases": [
        "commissioning",
        "operations_maintenance"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.10.12-G01/"
    },
    {
      "requirement_id": "JDDG25-14.11.10.12-G02",
      "section": "14.11.10.12",
      "title_ja": "周波数変換器",
      "title_en": "FREQUENCY CONVERTERS",
      "summary_ja": "政府支給の電動発電機または静止形周波数変換器が一般に使用されることを示しています。",
      "source_fact_en": "The source notes that Government-furnished motor-generator sets or solid-state frequency converters are typically used.",
      "strength": "guidance",
      "strength_ja": "指針",
      "applicable_phases": [],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.10.12-G02/"
    },
    {
      "requirement_id": "JDDG25-14.11.10.12-R01",
      "section": "14.11.10.12",
      "title_ja": "周波数変換器",
      "title_en": "FREQUENCY CONVERTERS",
      "summary_ja": "指定された周波数変換器設置場所への給電およびそこからの電気設備接続を設けることを求めています。",
      "source_fact_en": "Electrical service to and from designated frequency-converter locations is required.",
      "strength": "mandatory",
      "strength_ja": "必須",
      "applicable_phases": [
        "design",
        "installation"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.10.12-R01/"
    },
    {
      "requirement_id": "JDDG25-14.11.17-R03",
      "section": "14.11.17",
      "title_ja": "ランプ、ドライバおよび安定器",
      "title_en": "LAMPS, DRIVERS AND BALLASTS",
      "summary_ja": "電子安定器の性能は、UFGS 26 51 00に適合することを求めています。",
      "source_fact_en": "Electronic-ballast performance must conform to UFGS 26 51 00.",
      "strength": "mandatory",
      "strength_ja": "必須",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "cross_reference_required",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.17-R03/"
    },
    {
      "requirement_id": "JDDG25-14.11.20.4-R01",
      "section": "14.11.20.4",
      "title_ja": "電子安定器",
      "title_en": "ELECTRONIC BALLASTS",
      "summary_ja": "電子安定器を使用する非常照明では、入力側で発生する高調波を設計上考慮することを求めています。",
      "source_fact_en": "Emergency-lighting design must consider input-side harmonic generation when electronic ballasts are used.",
      "strength": "mandatory",
      "strength_ja": "必須",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.11.20.4-R01/"
    },
    {
      "requirement_id": "JDDG25-14.12.2-R01",
      "section": "14.12.2",
      "title_ja": "接地",
      "title_en": "GROUNDING",
      "summary_ja": "敏感な電子機器の試験・保守、通信、データ処理用途では、MIL HDBK 419A、ANSI/TIA-607、IEEE 1100を参照・設計基準として使用することを推奨しています。",
      "source_fact_en": "For sensitive electronics testing, maintenance, communications, or data-processing applications, MIL HDBK 419A, ANSI/TIA-607, and IEEE 1100 should be used as reference and design criteria.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design",
        "commissioning",
        "operations_maintenance"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.12.2-R01/"
    },
    {
      "requirement_id": "JDDG25-14.12.2.5-R01",
      "section": "14.12.2.5",
      "title_ja": "信号基準サブシステム",
      "title_en": "SIGNAL REFERENCE SUBSYSTEM",
      "summary_ja": "厳しい性能要求を持つ電子機器施設では、信号基準接地構成を設けることを推奨しています。",
      "source_fact_en": "A signal-reference ground configuration should be provided in electronics facilities with strict performance requirements.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design",
        "installation"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.12.2.5-R01/"
    },
    {
      "requirement_id": "JDDG25-14.12.2.6-R01",
      "section": "14.12.2.6",
      "title_ja": "静電気対策",
      "title_en": "STATIC",
      "summary_ja": "燃料取扱場所、航空機駐機場所、その他同様の用途では、静電気を逃がすための対策を設けることを推奨しています。",
      "source_fact_en": "Static-dissipation provisions should be provided for fuel handling, aircraft parking, and similar applications.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.12.2.6-R01/"
    },
    {
      "requirement_id": "JDDG25-14.12.2.8-R03",
      "section": "14.12.2.8",
      "title_ja": "電子サブシステム性能要件",
      "title_en": "ELECTRONIC SUBSYSTEM PERFORMANCE REQUIREMENTS",
      "summary_ja": "電子機器施設では、接地抵抗を5 Ω未満とすることが一般に望ましいとしています。",
      "source_fact_en": "For electronics facilities, grounding resistance below 5 ohms is generally desired.",
      "strength": "recommended",
      "strength_ja": "推奨",
      "applicable_phases": [
        "design",
        "commissioning"
      ],
      "quality_flag": "normal",
      "url": "https://www.ieee802.co.jp/jddg/2025/requirements/JDDG25-14.12.2.8-R03/"
    }
  ]
}
