{
 "slug": "customized-25-mva-31500-kva-power-transformer-66-72-5-kv",
 "title": "Customized 25 MVA / 31500 kVA Power Transformer 66–72.5 kV",
 "category": "power-transformer",
 "categoryName": "Power Transformers",
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 "overview": "A customizable three-phase oil-immersed power transformer rated 25 MVA / 31500 kVA, stepping 66 / 69 / 72.5 kV down to 15 kV for substation and distribution networks. Built with a sealed steel tank, radiator cooling and a conservator oil-expansion system for a 20-year design life, and engineered to project single-line requirements. Copper or aluminium windings, IEC/GB compliant.",
 "sellingPoints": [
  "Fully customizable 25 MVA / 31500 kVA design at 66–72.5 kV",
  "Oil-immersed sealed design with radiator cooling and conservator",
  "Vector group Dyn11 / Yyn0 to suit substation single-line requirements",
  "Low-loss copper or aluminium windings, 20-year service life",
  "Certified IEC, CE, ISO9001/14001/45001, CQC, GOST, EAC"
 ],
 "specs": [
  [
   "Product Type",
   "Three-Phase Oil-Immersed Power Transformer"
  ],
  [
   "Rated Capacity",
   "25 MVA / 31500 kVA"
  ],
  [
   "Input Voltage (HV)",
   "66 / 69 / 72.5 kV"
  ],
  [
   "Output Voltage (LV)",
   "15 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",
   "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 customized 66–72.5-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 Customized 25 MVA / 31500 kVA Power Transformer 66–72.5 kV?",
   "a": "The standard configuration is rated 25 MVA / 31500 kVA 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 / 69 / 72.5 kV input to 15 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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