Power Transformer Data Sheet

{
  "title_block": "<common>",
  "manufacturer": "str",
  "equipment_tags": ["str"],
  "service": "str",
  "quantity": "int",
  "transformer_type": "str",
  "cooling_type": "str",
  "standards": ["str"],
  "ratings": {
    "rated_power_kva_mva": "num", "rated_frequency_hz": "num",
    "primary_voltage_kv": "num", "secondary_voltage_kv": "num",
    "tertiary_voltage_kv": "num", "vector_group": "str",
    "connection_primary": "str", "connection_secondary": "str",
    "impedance_pct": "num", "no_load_losses_w": "num", "load_losses_w": "num",
    "efficiency_at_full_load_pct": "num",
    "short_circuit_withstand_sec": "num",
    "basic_insulation_level_kv": "num"
  },
  "tap_changer": { "type": "str", "range_pct": "str", "steps": "int" },
  "winding_material": "str",
  "insulation_class": "str",
  "temperature_rise_top_oil_k": "num",
  "temperature_rise_winding_k": "num",
  "ambient_temperature_c": "num",
  "noise_level_dba": "num",
  "tank_design": "str",
  "dimensions": { "length_mm": "num", "width_mm": "num", "height_mm": "num" },
  "weights": {
    "core_and_winding_kg": "num", "oil_kg": "num",
    "tank_and_fittings_kg": "num", "total_kg": "num", "transport_kg": "num"
  },
  "bushings": [
    {"side": "str", "rating_kv": "num", "current_a": "num", "type": "str"}
  ],
  "accessories": ["str"],
  "hazardous_area_classification": {
    "zone": "str", "gas_group": "str", "t_code": "str"
  },
  "tests": {
    "routine_tests": ["str"], "type_tests": ["str"], "special_tests": ["str"]
  },
  "revision_history": [
    {"revision": "str", "date": "str", "description": "str",
     "originated_by": "str", "checked_by": "str", "approved_by": "str"}
  ],
  "notes": ["str"]
}