{
 "slug": "iec-60076-66-kv-three-winding-oil-immersed-substation-power-transformer",
 "title": "IEC 60076 66 kV Three-Winding Oil-Immersed Substation Power Transformer",
 "category": "power-transformer",
 "categoryName": "Power Transformers",
 "url": "https://www.electrical-equipment-factory.com/products/power-transformer/iec-60076-66-kv-three-winding-oil-immersed-substation-power-transformer/",
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 "overview": "A three-phase, three-winding oil-immersed substation power transformer built to IEC 60076, stepping 66 kV down to 22 kV for utility substations and distribution networks. Sealed steel tank with radiator cooling and a conservator oil-expansion system, delivering efficient, standards-compliant transformation. Copper or aluminium windings.",
 "sellingPoints": [
  "Fully compliant with IEC 60076 power-transformer standard",
  "Three-winding 66 kV / 22 kV substation design",
  "Oil-immersed sealed construction with radiator cooling and conservator",
  "Vector group Dyn11 / Yyn0 to suit substation single-line requirements",
  "Low-loss copper or aluminium windings; ISO9001 quality system"
 ],
 "specs": [
  [
   "Product Type",
   "Three-Phase Three-Winding Oil-Immersed Power Transformer"
  ],
  [
   "Input Voltage (HV)",
   "66 kV"
  ],
  [
   "Output Voltage (LV)",
   "22 kV"
  ],
  [
   "Frequency",
   "50 / 60 Hz"
  ],
  [
   "Phase",
   "Three"
  ],
  [
   "Coil Number",
   "Three Windings"
  ],
  [
   "Winding Material",
   "Copper / Aluminium"
  ],
  [
   "Vector Group",
   "Dyn11 / Yyn0"
  ],
  [
   "Cooling",
   "ONAN / ONAF (oil-immersed, radiator)"
  ],
  [
   "Standard",
   "IEC 60076 / GB"
  ],
  [
   "Certification",
   "ISO9001"
  ],
  [
   "Packing",
   "Wooden Case"
  ]
 ],
 "applications": "Utility and industrial substations, power transmission and distribution networks, and interconnection stations requiring IEC 60076-compliant 66-kV-class transformation.",
 "customisation": "Capacity, HV/LV voltage, vector group, tap-changer type, cooling class and fittings are customizable to project single-line requirements.",
 "faq": [
  {
   "q": "What voltage ratio is available?",
   "a": "The standard unit is 66 kV input to 22 kV output. Voltage ratio, tapping range and vector group can be adjusted to your network; 50 Hz and 60 Hz designs are available."
  },
  {
   "q": "Which standards and certifications apply?",
   "a": "The product is designed to IEC 60076 / GB. MARS operates an ISO 9001 / 14001 / 45001 certified factory and holds CE (ECM), UDEM, EAC and CQC approvals; every unit is routine-tested before dispatch and type or witnessed tests can be arranged."
  },
  {
   "q": "Can this product be customised?",
   "a": "Capacity, HV/LV voltage, vector group, tap-changer type, cooling class and fittings are customizable to project single-line requirements."
  },
  {
   "q": "What is the lead time and how is it shipped?",
   "a": "Packed in wooden case. Typical lead time is 25–45 days after drawing approval for distribution equipment and 60–90 days for power transformers and containerised systems. Shipment is by sea from Shanghai on EXW, FOB, CIF or DAP terms with a full document pack."
  }
 ],
 "brand": "MARS",
 "manufacturer": "Shanghai Mars Electric Power Equipment Co., Ltd.",
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