{
  "node": {
    "id": "term:iec-62477-1",
    "type": "Term",
    "label": "IEC 62477-1",
    "properties": {
      "id": "iec-62477-1",
      "name": "IEC 62477-1",
      "section": "topic-standards-stationary",
      "definition": "The general IEC safety standard for power electronic converter systems and equipment rated up to 1 000 V AC or 1 500 V DC. It is the safety basis for many inverters and DC–DC converters that connect batteries to loads and to the grid, and a reference for product standards on bidirectional converters.",
      "related": [
        "inverter",
        "dc-dc-converter",
        "ul-1741",
        "stationary-storage",
        "insulation-resistance"
      ],
      "url": "https://lemonergy.com/learn/glossary/iec-62477-1/",
      "mentions": []
    }
  },
  "edges": [
    {
      "id": "edge:6351",
      "source": "term:iec-62477-1",
      "target": "topic:topic-standards-stationary",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:6352",
      "source": "term:iec-62477-1",
      "target": "term:inverter",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6353",
      "source": "term:iec-62477-1",
      "target": "term:dc-dc-converter",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6354",
      "source": "term:iec-62477-1",
      "target": "term:ul-1741",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6355",
      "source": "term:iec-62477-1",
      "target": "term:stationary-storage",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6356",
      "source": "term:iec-62477-1",
      "target": "term:insulation-resistance",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    }
  ],
  "neighbors": [
    {
      "id": "topic:topic-standards-stationary",
      "type": "Topic",
      "label": "Stationary, industrial and product standards",
      "properties": {
        "id": "topic-standards-stationary",
        "name": "Stationary, industrial and product standards",
        "lede": "Safety and performance standards for portable, industrial and grid batteries, their electronics and their installation.",
        "context": "Match scope to product and installation.",
        "example": "A cell-level test does not establish fire performance or commissioning requirements for a complete installation.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/battery-basics/",
        "lesson_label": "Open battery basics"
      }
    },
    {
      "id": "term:inverter",
      "type": "Term",
      "label": "Inverter",
      "properties": {
        "id": "inverter",
        "name": "Inverter",
        "aka": [
          "power conversion system",
          "PCS"
        ],
        "section": "topic-pack",
        "definition": "The power electronics that turn the battery’s DC into AC for a motor or the grid, and back again for charging. In stationary storage it is called the power conversion system and its rating in kW or MW sets the system’s power independently of the battery’s energy.",
        "related": [
          "pre-charge",
          "dc-dc-converter",
          "stationary-storage",
          "energy-management-system",
          "direct-current",
          "iec-62477-1"
        ],
        "url": "https://lemonergy.com/learn/glossary/inverter/",
        "mentions": []
      }
    },
    {
      "id": "term:dc-dc-converter",
      "type": "Term",
      "label": "DC/DC converter",
      "properties": {
        "id": "dc-dc-converter",
        "name": "DC/DC converter",
        "section": "topic-pack",
        "definition": "The power electronics that step the high-voltage pack down to 12 V or 48 V for the auxiliary systems, replacing the alternator of a combustion car. Boost converters also appear between an 800 V pack and a 400 V charger.",
        "related": [
          "auxiliary-battery",
          "inverter",
          "pack-voltage"
        ],
        "url": "https://lemonergy.com/learn/glossary/dc-dc-converter/",
        "mentions": [
          "charger"
        ]
      }
    },
    {
      "id": "term:ul-1741",
      "type": "Term",
      "label": "UL 1741",
      "properties": {
        "id": "ul-1741",
        "name": "UL 1741",
        "aka": [
          "UL 1741 SB",
          "UL 1741 SA"
        ],
        "section": "topic-standards-stationary",
        "definition": "The North American safety standard for inverters, converters, charge controllers and interconnection equipment used with distributed energy resources such as solar and battery storage. Its Supplement SB certifies grid-support functions, such as ride-through and voltage and frequency response, against the tests of IEEE 1547.1-2020, taking over from the earlier Supplement SA.",
        "related": [
          "inverter",
          "ul-9540",
          "stationary-storage",
          "frequency-regulation",
          "vehicle-to-grid"
        ],
        "url": "https://lemonergy.com/learn/glossary/ul-1741/",
        "mentions": []
      }
    },
    {
      "id": "term:stationary-storage",
      "type": "Term",
      "label": "Stationary storage",
      "properties": {
        "id": "stationary-storage",
        "name": "Stationary storage",
        "abbr": "BESS",
        "aka": [
          "battery energy storage system",
          "ESS"
        ],
        "section": "topic-applications",
        "definition": "Batteries installed in a fixed place — a container at a solar farm, a cabinet in a home — to shift energy in time or support the grid. LFP cells dominate because cost per cycle and safety matter more than mass.",
        "related": [
          "lfp",
          "energy-management-system",
          "inverter",
          "energy-arbitrage",
          "long-duration-storage",
          "ul-9540a"
        ],
        "url": "https://lemonergy.com/learn/glossary/stationary-storage/",
        "mentions": []
      }
    },
    {
      "id": "term:insulation-resistance",
      "type": "Term",
      "label": "Insulation resistance",
      "properties": {
        "id": "insulation-resistance",
        "name": "Insulation resistance",
        "aka": [
          "isolation resistance",
          "IMD"
        ],
        "section": "topic-hvsafety",
        "definition": "The resistance between the high-voltage circuit and the vehicle chassis, which must stay above about 100 Ω per volt of pack voltage so a person touching the chassis is safe. An insulation monitoring device measures it continuously.",
        "unit": "Ω/V",
        "related": [
          "pack-voltage",
          "high-voltage-interlock",
          "functional-safety",
          "insulation-test"
        ],
        "url": "https://lemonergy.com/learn/glossary/insulation-resistance/",
        "mentions": [
          "volt"
        ]
      }
    }
  ]
}