{
  "node": {
    "id": "term:damp-heat-test",
    "type": "Term",
    "label": "Damp heat test",
    "properties": {
      "id": "damp-heat-test",
      "name": "Damp heat test",
      "aka": [
        "humidity test",
        "cyclic damp heat",
        "IEC 60068-2-30"
      ],
      "section": "topic-testing",
      "definition": "Keeping a cell, module or pack warm and very humid, steadily or in cycles, to bring out corrosion, seal leaks and condensation that lower insulation resistance. The common cyclic version, IEC 60068-2-30, alternates between about 25 °C and 40 or 55 °C at over 90 % relative humidity in 24-hour cycles for several days.",
      "related": [
        "insulation-resistance",
        "enclosure",
        "ip-rating",
        "thermal-shock-test",
        "salt-spray-test"
      ],
      "url": "https://lemonergy.com/learn/glossary/damp-heat-test/",
      "mentions": [
        "relative-humidity"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:5423",
      "source": "term:damp-heat-test",
      "target": "topic:topic-testing",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:5424",
      "source": "term:damp-heat-test",
      "target": "term:insulation-resistance",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:5425",
      "source": "term:damp-heat-test",
      "target": "term:enclosure",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:5426",
      "source": "term:damp-heat-test",
      "target": "term:ip-rating",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:5427",
      "source": "term:damp-heat-test",
      "target": "term:thermal-shock-test",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:5428",
      "source": "term:damp-heat-test",
      "target": "term:salt-spray-test",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/damp-heat-test/relative-humidity",
      "source": "term:damp-heat-test",
      "target": "term:relative-humidity",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    }
  ],
  "neighbors": [
    {
      "id": "topic:topic-testing",
      "type": "Topic",
      "label": "Testing methods",
      "properties": {
        "id": "topic-testing",
        "name": "Testing methods",
        "lede": "The measurements and test procedures that characterise a cell or pack, from capacity and pulse tests to abuse and environmental tests.",
        "context": "Record specimen, state, instrument, temperature and timing.",
        "example": "Resistance immediately after a current step can differ from a ten-second value because slower polarization contributes.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/capacity-and-c-rate/",
        "lesson_label": "Open capacity measurements"
      }
    },
    {
      "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"
        ]
      }
    },
    {
      "id": "term:enclosure",
      "type": "Term",
      "label": "Enclosure",
      "properties": {
        "id": "enclosure",
        "name": "Enclosure",
        "aka": [
          "battery housing",
          "battery tray"
        ],
        "section": "topic-pack",
        "definition": "The sealed case that carries the modules, protects them in a crash, keeps water out to an IP67 rating or better and vents gas in a thermal event. In many cars it is a structural part of the body.",
        "related": [
          "pack",
          "ip-rating",
          "cell-to-chassis",
          "venting",
          "gigacasting",
          "ul-94"
        ],
        "url": "https://lemonergy.com/learn/glossary/enclosure/",
        "mentions": []
      }
    },
    {
      "id": "term:ip-rating",
      "type": "Term",
      "label": "IP rating",
      "properties": {
        "id": "ip-rating",
        "name": "IP rating",
        "aka": [
          "ingress protection"
        ],
        "section": "topic-pack",
        "definition": "A two-digit code for how well an enclosure keeps out solids and water: the first digit for dust, the second for water. Battery packs are typically IP67, dust-tight and able to survive brief immersion.",
        "related": [
          "enclosure",
          "pack",
          "immersion-test"
        ],
        "url": "https://lemonergy.com/learn/glossary/ip-rating/",
        "mentions": []
      }
    },
    {
      "id": "term:thermal-shock-test",
      "type": "Term",
      "label": "Thermal shock and cycling test",
      "properties": {
        "id": "thermal-shock-test",
        "name": "Thermal shock and cycling test",
        "section": "topic-testing",
        "definition": "Moving a cell or pack rapidly between temperature extremes, typically −40 °C and +60 to +85 °C, for many cycles, to find seals, welds and housings that fail by differential expansion. It is in UN 38.3, R100 and most pack specifications.",
        "related": [
          "transport-regulations",
          "un-r100-part-2",
          "vibration-test",
          "abuse-testing"
        ],
        "url": "https://lemonergy.com/learn/glossary/thermal-shock-test/",
        "mentions": [
          "un-r100"
        ]
      }
    },
    {
      "id": "term:salt-spray-test",
      "type": "Term",
      "label": "Salt spray test",
      "properties": {
        "id": "salt-spray-test",
        "name": "Salt spray test",
        "aka": [
          "salt fog test",
          "neutral salt spray",
          "ISO 9227"
        ],
        "section": "topic-testing",
        "definition": "Exposing a pack enclosure, connector or fastener to a fine mist of 5 % sodium chloride solution at 35 °C for hours to weeks to rate its corrosion resistance. Vehicle packs sit under the floor in road salt, so corroded seals and high-voltage connectors are a real failure path; ISO 9227 defines the neutral test.",
        "related": [
          "enclosure",
          "ip-rating",
          "damp-heat-test",
          "immersion-test"
        ],
        "url": "https://lemonergy.com/learn/glossary/salt-spray-test/",
        "mentions": []
      }
    },
    {
      "id": "term:relative-humidity",
      "type": "Term",
      "label": "Relative humidity",
      "properties": {
        "id": "relative-humidity",
        "name": "Relative humidity",
        "abbr": "RH",
        "section": "topic-thermal",
        "definition": "The water vapour in air as a percentage of the most it could hold at that temperature. The same air reads a different RH when warmed or cooled, so dry rooms are specified by dew point instead. Air at 25 °C and 50 % RH has a dew point of about 14 °C: any surface colder than that collects condensation.",
        "related": [
          "dew-point",
          "dry-room",
          "condensation-control",
          "moisture-content"
        ],
        "url": "https://lemonergy.com/learn/glossary/relative-humidity/",
        "mentions": []
      }
    }
  ]
}