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 "slug": "energy-saving-25-30-mva-oil-immersed-power-transformer-66-110-kv",
 "title": "Energy-Saving 25 / 30 MVA Oil-Immersed Power Transformer 66–110 kV",
 "category": "power-transformer",
 "categoryName": "Power Transformers",
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 "overview": "An energy-saving three-phase oil-immersed power transformer rated 25 and 30 MVA, stepping 66 / 110 kV down to 23 kV for substation and distribution networks. Its low-loss core and windings reduce no-load and load losses, cutting operating cost over a 20-year design life. Sealed steel tank with radiator cooling and conservator; copper or aluminium windings, IEC/GB compliant.",
 "sellingPoints": [
  "Energy-saving low-loss design — reduced no-load and load losses",
  "25 / 30 MVA at 66–110 kV for substations and distribution",
  "Oil-immersed sealed construction with radiator cooling and conservator",
  "Vector group Dyn11 / Yyn0 to suit single-line requirements",
  "Certified UL, IEC, CE, ISO9001/14001/45001, CQC, GOST, EAC"
 ],
 "specs": [
  [
   "Product Type",
   "Three-Phase Oil-Immersed Power Transformer"
  ],
  [
   "Rated Capacity",
   "25 / 30 MVA"
  ],
  [
   "Input Voltage (HV)",
   "66 / 110 kV"
  ],
  [
   "Output Voltage (LV)",
   "23 kV"
  ],
  [
   "Frequency",
   "50 / 60 Hz"
  ],
  [
   "Phase",
   "Three"
  ],
  [
   "Winding Material",
   "Copper / Aluminium"
  ],
  [
   "Vector Group",
   "Dyn11 / Yyn0"
  ],
  [
   "Cooling",
   "ONAN / ONAF (oil-immersed, radiator)"
  ],
  [
   "Standard",
   "IEC / GB"
  ],
  [
   "Certification",
   "UL, IEC, CE, ISO9001, ISO14001, ISO45001, CQC, GOST, EAC"
  ],
  [
   "Service Life",
   "20 Years"
  ],
  [
   "Packing",
   "Wooden Case"
  ]
 ],
 "applications": "Utility and industrial substations, power transmission and distribution networks, renewable-energy stations and large plants requiring efficient 66–110-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 is the rated capacity of the Energy-Saving 25 / 30 MVA Oil-Immersed Power Transformer 66–110 kV?",
   "a": "The standard configuration is rated 25 / 30 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 66 / 110 kV input to 23 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 / 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."
  }
 ],
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 "manufacturer": "Shanghai Mars Electric Power Equipment Co., Ltd.",
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