{
  "node": {
    "id": "term:iec-62933",
    "type": "Term",
    "label": "IEC 62933",
    "properties": {
      "id": "iec-62933",
      "name": "IEC 62933",
      "aka": [
        "EES systems",
        "IEC 62933-5-2"
      ],
      "section": "topic-standards-stationary",
      "definition": "The IEC series for grid-integrated electrical energy storage systems, written at system level whatever the storage technology: part 2-1 defines unit parameters and test methods, part 5-1 gives general safety considerations, and part 5-2 adds safety requirements for battery-based systems over their whole life, from design to decommissioning.",
      "related": [
        "stationary-storage",
        "iec-63056",
        "iec-62619",
        "ul-9540",
        "gbt-36558",
        "frequency-regulation"
      ],
      "url": "https://lemonergy.com/learn/glossary/iec-62933/",
      "mentions": []
    }
  },
  "edges": [
    {
      "id": "edge:6331",
      "source": "term:iec-62933",
      "target": "topic:topic-standards-stationary",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:6332",
      "source": "term:iec-62933",
      "target": "term:stationary-storage",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6333",
      "source": "term:iec-62933",
      "target": "term:iec-63056",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6334",
      "source": "term:iec-62933",
      "target": "term:iec-62619",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6335",
      "source": "term:iec-62933",
      "target": "term:ul-9540",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6336",
      "source": "term:iec-62933",
      "target": "term:gbt-36558",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:6337",
      "source": "term:iec-62933",
      "target": "term:frequency-regulation",
      "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: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:iec-63056",
      "type": "Term",
      "label": "IEC 63056",
      "properties": {
        "id": "iec-63056",
        "name": "IEC 63056",
        "section": "topic-standards-stationary",
        "definition": "The safety standard for lithium battery systems in electrical energy storage, building on IEC 62619 with system-level requirements for the electronics, enclosure and installation of stationary storage.",
        "related": [
          "iec-62619",
          "ul-9540a",
          "stationary-storage"
        ],
        "url": "https://lemonergy.com/learn/glossary/iec-63056/",
        "mentions": [
          "enclosure"
        ]
      }
    },
    {
      "id": "term:iec-62619",
      "type": "Term",
      "label": "IEC 62619",
      "properties": {
        "id": "iec-62619",
        "name": "IEC 62619",
        "section": "topic-standards-stationary",
        "definition": "The safety standard for secondary lithium cells and batteries in industrial applications — stationary storage, forklifts, rail and marine — covering cell abuse tests plus battery-system functions such as overcharge and thermal control. It is the industrial counterpart of IEC 62133 for portable and IEC 62660 for vehicles.",
        "related": [
          "iec-62133",
          "iec-62660",
          "stationary-storage",
          "conformity-assessment",
          "iec-63056",
          "en-62040-1"
        ],
        "url": "https://lemonergy.com/learn/glossary/iec-62619/",
        "mentions": [
          "overcharge"
        ]
      }
    },
    {
      "id": "term:ul-9540",
      "type": "Term",
      "label": "UL 9540",
      "properties": {
        "id": "ul-9540",
        "name": "UL 9540",
        "section": "topic-standards-stationary",
        "definition": "The North American product safety standard for a complete energy storage system — battery, inverter and controls together — as opposed to UL 9540A, which is the test method for its thermal-runaway behaviour. Listing to UL 9540 is what most US fire codes require for installation.",
        "related": [
          "ul-9540a",
          "nfpa-855",
          "stationary-storage",
          "inverter",
          "pas-63100"
        ],
        "url": "https://lemonergy.com/learn/glossary/ul-9540/",
        "mentions": []
      }
    },
    {
      "id": "term:gbt-36558",
      "type": "Term",
      "label": "GB/T 36558 and GB/T 36545",
      "properties": {
        "id": "gbt-36558",
        "name": "GB/T 36558 and GB/T 36545",
        "aka": [
          "GB/T 36558",
          "GB/T 36545"
        ],
        "section": "topic-standards-stationary",
        "definition": "Two Chinese national standards for electrochemical storage on the grid: GB/T 36558 sets general technical requirements for storage systems in the power system — power control, efficiency, fault ride-through, frequency response, black start — and GB/T 36545 covers mobile, vehicle-mounted storage systems. Both were revised in 2023 and apply from July 2024.",
        "related": [
          "gbt-36276",
          "iec-62933",
          "stationary-storage",
          "frequency-regulation",
          "energy-management-system"
        ],
        "url": "https://lemonergy.com/learn/glossary/gbt-36558/",
        "mentions": []
      }
    },
    {
      "id": "term:frequency-regulation",
      "type": "Term",
      "label": "Frequency regulation",
      "properties": {
        "id": "frequency-regulation",
        "name": "Frequency regulation",
        "aka": [
          "ancillary services",
          "frequency response"
        ],
        "section": "topic-applications",
        "definition": "Rapidly injecting or absorbing power to hold the grid frequency at 50 or 60 Hz, a service batteries do better than any generator because they respond in milliseconds. It cycles the battery shallowly but very often.",
        "related": [
          "stationary-storage",
          "energy-arbitrage",
          "specific-power",
          "equivalent-full-cycle",
          "rate-of-change-of-frequency"
        ],
        "url": "https://lemonergy.com/learn/glossary/frequency-regulation/",
        "mentions": []
      }
    }
  ]
}