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 "title": "110kV 20MVA Three-Phase Oil-Immersed Power Transformer (110kV / 35kV, Dyn11)",
 "category": "power-transformer",
 "categoryName": "Power Transformers",
 "url": "https://www.electrical-equipment-factory.com/products/power-transformer/110kv-20mva-three-phase-oil-immersed-power-transformer-110kv-35kv-dyn11/",
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 "overview": "This 20MVA oil-immersed power transformer steps 110kV down to 35kV for utility substations, industrial plants, and grid distribution networks. Built as a fully sealed three-phase unit with copper or aluminium windings and brand-new PCB-free mineral insulating oil, it is engineered for continuous heavy-load service at 50/60Hz with high efficiency and long life.",
 "sellingPoints": [
  "110kV → 35kV step-up/step-down, 20MVA rated capacity",
  "Fully sealed construction — no oxidation, low maintenance, extended oil life",
  "Multi-winding design with Dyn11 / Yyn0 vector groups",
  "Brand-new mineral insulating oil, free of PCB",
  "Internationally certified: IEC, CE, ISO9001, ISO14001, ISO45001, CQC, GOST, EAC"
 ],
 "specs": [
  [
   "Product Type",
   "Oil-Immersed Power Transformer"
  ],
  [
   "Rated Capacity",
   "20 MVA"
  ],
  [
   "Input Voltage",
   "110 kV"
  ],
  [
   "Output Voltage",
   "35 kV"
  ],
  [
   "Frequency",
   "50 / 60 Hz"
  ],
  [
   "Phase",
   "Three"
  ],
  [
   "Coil Number",
   "Multi Winding"
  ],
  [
   "Coil Structure",
   "Fully Sealed Construction"
  ],
  [
   "Winding Material",
   "Copper / Aluminium"
  ],
  [
   "Vector Group",
   "Dyn11 / Yyn0"
  ],
  [
   "Insulating Oil",
   "Brand-new mineral insulating oil, without PCB"
  ],
  [
   "Application",
   "Electronic / Power Distribution"
  ],
  [
   "Certification",
   "IEC, CE, ISO9001, ISO14001, ISO45001, CQC, GOST, EAC"
  ],
  [
   "Warranty",
   "2 Years"
  ],
  [
   "Packing",
   "Wooden Case"
  ],
  [
   "Package Size",
   "280 × 250 × 200 cm"
  ],
  [
   "Gross Weight",
   "4000 kg"
  ]
 ],
 "applications": "Suited to 110kV utility and industrial substations, power distribution networks, heavy manufacturing, mining, and infrastructure projects requiring reliable medium/high-voltage transformation.",
 "customisation": "Capacity, voltage ratio, vector group, cooling configuration, and certification can be tailored to project requirements. Winding material (copper or aluminium) available on request.",
 "faq": [
  {
   "q": "What is the rated capacity of the 110kV 20MVA Three-Phase Oil-Immersed Power Transformer (110kV / 35kV, Dyn11)?",
   "a": "The standard configuration is rated 20 MVA at 50 / 60 Hz. Other ratings in the same family can be built to order — tell us the load and we will confirm the nearest standard rating."
  },
  {
   "q": "What voltage ratio is available?",
   "a": "The standard unit is 110 kV input to 35 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, CE, ISO9001, ISO14001, ISO45001, CQC, GOST, EAC. 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, voltage ratio, vector group, cooling configuration, and certification can be tailored to project requirements. Winding material (copper or aluminium) available on request."
  },
  {
   "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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