{
  "schemaVersion": "1.0",
  "id": "https://elect-learn.org/zh/lesson/02-deenergize-test-lockout/",
  "url": "https://elect-learn.org/zh/lesson/02-deenergize-test-lockout/",
  "markdownUrl": "https://elect-learn.org/zh/lesson/02-deenergize-test-lockout/index.md",
  "jsonUrl": "https://elect-learn.org/zh/lesson/02-deenergize-test-lockout/index.json",
  "language": "zh",
  "title": "断电、验电、上锁挂牌",
  "description": "了解什么测试设备可用于确认回路断电，以及为什么 OFF 位置、指示灯熄灭和通断蜂鸣都不是无电证明。内容仅用于学习，现场验证由合格人员按适用程序完成。",
  "kind": "lesson",
  "safetyNotice": "学习参考：不同国家/地区的电气规范、许可和验收主体差异很大，本课程不替代当地法规、持证培训、现场许可或主管部门要求。任何实操前都应断电、验电，并遵守当地 AHJ/监管机构和雇主流程。",
  "sections": [
    {
      "id": "deenergized-test-equipment",
      "heading": "什么工具可以确认系统已断电？",
      "paragraphs": [
        "合格人员使用额定参数适合的电压测试仪器，作为断电确认程序的一部分。开关在 OFF 位置、指示灯熄灭或通断蜂鸣，都不足以证明系统已断电。",
        "对于适用的美国电气作业，OSHA 1910.333(b)(2)(iv) 要求核实人员将接触的回路与设备部位，并考虑反送电及感应电压。这里学习术语；现场确认须遵循当地规则、设备说明及雇主程序。"
      ],
      "links": [
        {
          "title": "OSHA 1910.333 — verification of deenergized condition",
          "url": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.333"
        },
        {
          "title": "OSHA interpretation — an indicator light is not deenergization test equipment",
          "url": "https://www.osha.gov/laws-regs/standardinterpretations/2012-12-12"
        },
        {
          "title": "万用表符号、档位与读数",
          "url": "https://elect-learn.org/zh/guides/multimeter-symbols/"
        },
        {
          "title": "上锁挂牌用语与角色",
          "url": "https://elect-learn.org/zh/guides/lockout-tagout-english-vocabulary/"
        }
      ]
    },
    {
      "id": "section-1",
      "heading": "课程信息",
      "paragraphs": [
        "安全与工具 · 入门 · 20 min",
        "LOTO",
        "验电"
      ]
    },
    {
      "id": "section-2",
      "heading": "断开、锁定、验证，三件事缺一不可。",
      "paragraphs": [
        "断开是一个动作，确认无电是一项验证。锁具防止误送电，验电确认当前状态。"
      ],
      "items": [
        "先识别所有能源与可能的回送电。",
        "按授权程序隔离、上锁挂牌，处理储能。",
        "由合格人员验证无电，并核验仪表前后有效。"
      ]
    },
    {
      "id": "section-3",
      "heading": "学习目标",
      "items": [
        "理解 LOTO 为什么用于防止误合闸和意外启动。",
        "掌握“先测已知带电点、再测目标、再回测”的验电逻辑。",
        "知道学习者能模拟流程，但现场执行要遵守雇主和当地规定。"
      ]
    },
    {
      "id": "section-4",
      "heading": "同事误合闸",
      "paragraphs": [
        "维护灯具时，有人看到断路器关闭，以为误关，随手合上。",
        "错误判断: 只贴口头提醒，没人能确认谁在控制电源。",
        "停手边界: 多人共享区域或工作场所必须按程序锁定和标识。",
        "推理路径: 识别所有电源，通知相关人员，隔离电源，锁定挂牌，验证无电，工作结束后按程序恢复。",
        "复习: OSHA LOTO 强调雇主程序、培训、授权人员和危险能量控制。"
      ]
    },
    {
      "id": "section-5",
      "heading": "完整知识点",
      "items": [
        "断电不是猜测动作，而是把能量源从设备上隔离。",
        "验电要证明仪表可用，再证明目标无电，再确认仪表仍可用。",
        "上锁挂牌的核心是防止别人恢复能量。"
      ]
    },
    {
      "id": "tool-multimeter",
      "heading": "数字万用表",
      "paragraphs": [
        "测量电压、连续性和电阻，用来验证现象而不是猜测。",
        "误用与边界: 把表笔插错孔或量程选错，可能烧表或造成危险。"
      ]
    },
    {
      "id": "tool-tester",
      "heading": "非接触验电笔",
      "paragraphs": [
        "快速筛查是否可能带电，适合做第一道提醒。",
        "误用与边界: 不能单独作为无电证明，最后仍要用合适仪表确认。"
      ]
    },
    {
      "id": "tool-driver",
      "heading": "绝缘螺丝刀",
      "paragraphs": [
        "用于端子螺丝和面板螺丝，绝缘层提供额外保护。",
        "误用与边界: 绝缘工具不是带电作业许可证，破损后不能继续依赖。"
      ]
    },
    {
      "id": "section-9",
      "heading": "常见误区",
      "items": [
        "只把断路器拨到 OFF，却没有防止他人合闸。",
        "用没验证过的验电笔直接下结论。",
        "忽略设备可能有多个电源或储能部件。"
      ]
    },
    {
      "id": "section-10",
      "heading": "安全流程",
      "items": [
        "写下目标设备和可能电源。",
        "关闭并隔离正确电源，按当地/雇主流程上锁挂牌。",
        "用 live-dead-live 顺序验电。",
        "工作结束后清点工具和人员，再按流程恢复。"
      ],
      "ordered": true
    },
    {
      "id": "quiz-1",
      "heading": "验电为什么要先测已知带电点？",
      "paragraphs": [
        "为了确认仪表、表笔和设置可用，否则“无读数”可能只是仪表问题。"
      ]
    },
    {
      "id": "quiz-2",
      "heading": "LOTO 防止的主要风险是什么？",
      "paragraphs": [
        "防止维修或维护时设备被意外启动或重新通电。"
      ]
    },
    {
      "id": "section-13",
      "heading": "回头看",
      "links": [
        {
          "title": "复习第 1 课：为什么不能假设无电。",
          "url": "https://elect-learn.org/zh/lesson/01-why-electricity-is-dangerous/"
        }
      ]
    }
  ],
  "dateModified": "2026-10-27",
  "publisher": {
    "name": "Elect Learn",
    "url": "https://elect-learn.org"
  },
  "review": {
    "status": "not-independently-reviewed",
    "statement": "尚无独立专业审校记录。参考来源不代表来源机构审校或认可本站。",
    "policyUrl": "https://elect-learn.org/zh/methodology/"
  }
}