{
 "slug": "33-66-kv-three-phase-oil-immersed-power-transformer-15-20-mva",
 "title": "33 / 66 kV Three-Phase Oil-Immersed Power Transformer 15 / 20 MVA",
 "category": "power-transformer",
 "categoryName": "Power Transformers",
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 "overview": "A three-phase oil-immersed power transformer rated 15 and 20 MVA, stepping 33 / 66 kV down to 10 kV or 415 V for substation, industrial and oil-field power supply. Built with a sealed steel tank, radiator cooling and a conservator oil-expansion system, it is engineered for demanding field environments such as oil-and-gas installations. Copper or aluminium windings, IEC/GB compliant.",
 "sellingPoints": [
  "33 / 66 kV class in 15 / 20 MVA ratings for substation and oil-field duty",
  "Oil-immersed sealed design with radiator cooling and conservator",
  "Vector group Dyn11 / Yyn0 to suit single-line requirements",
  "Rugged construction suited to harsh field environments",
  "Certified CE, UL, ISO9001; IEC / GB standards"
 ],
 "specs": [
  [
   "Product Type",
   "Three-Phase Oil-Immersed Power Transformer"
  ],
  [
   "Rated Capacity",
   "15 / 20 MVA"
  ],
  [
   "Input Voltage (HV)",
   "33 / 66 kV"
  ],
  [
   "Output Voltage (LV)",
   "10 kV / 415 V"
  ],
  [
   "Frequency",
   "50 / 60 Hz"
  ],
  [
   "Phase",
   "Three"
  ],
  [
   "Winding Material",
   "Copper / Aluminium"
  ],
  [
   "Vector Group",
   "Dyn11 / Yyn0"
  ],
  [
   "Cooling",
   "ONAN / ONAF (oil-immersed, radiator)"
  ],
  [
   "Standard",
   "IEC / GB"
  ],
  [
   "Certification",
   "CE, UL, ISO9001"
  ],
  [
   "Packing",
   "Wooden Case"
  ]
 ],
 "applications": "Oil-and-gas field power supply, utility and industrial substations, transmission and distribution networks, and large plants requiring 33/66-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 is the rated capacity of the 33 / 66 kV Three-Phase Oil-Immersed Power Transformer 15 / 20 MVA?",
   "a": "The standard configuration is rated 15 / 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 33 / 66 kV input to 10 kV / 415 V 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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