{
  "schemaVersion": 1,
  "generator": "scripts/blender/hvdc.py",
  "blenderVersion": "5.2.1 LTS",
  "provenance": "Original project-authored geometry and materials; no third-party art or copied illustrations",
  "arrangement": "symmetrical-monopole",
  "coordinates": "Three.js Y-up; Blender (x,y,z) exports as (x,z,-y)",
  "scale": "Arbitrary scene units. Station distances/spans compressed; components enlarged. Not an installation design.",
  "grounding": "Protective structure bonds only. No power conductor is bonded to earth; no earth return or third conductor.",
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