{
 "slug": "energy-saving-500-3500kva-35kv-480v-three-phase-oil-immersed-transformer",
 "title": "Energy-Saving 500–3500kVA 35kV/480V Three-Phase Oil-Immersed Transformer",
 "category": "oil-immersed-transformer",
 "categoryName": "Oil-Immersed Transformers",
 "url": "https://www.electrical-equipment-factory.com/products/oil-immersed-transformer/energy-saving-500-3500kva-35kv-480v-three-phase-oil-immersed-transformer/",
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 "overview": "This energy-saving three-phase oil-immersed distribution transformer steps 35kV down to 480V for utility, industrial, and EV-charging installations. Available from 500kVA to 3500kVA, it uses copper or aluminium windings in a fully sealed tank with corrugated radiators for efficient, reliable operation at 50/60Hz.",
 "sellingPoints": [
  "Energy-saving design across 500kVA–3500kVA",
  "35kV to 480V step-down, three-phase",
  "Fully sealed tank with corrugated radiators for efficient cooling",
  "Copper or aluminium windings, multiple vector groups",
  "Internationally certified: UL, CE, ISO9001, EAC, ISO14001, ISO45001"
 ],
 "specs": [
  [
   "Product Type",
   "Oil-Immersed Power Distribution Transformer"
  ],
  [
   "Rated Capacity",
   "500 kVA – 3500 kVA"
  ],
  [
   "Input Voltage",
   "35 kV"
  ],
  [
   "Output Voltage",
   "480 V"
  ],
  [
   "Frequency",
   "50 / 60 Hz"
  ],
  [
   "Phase",
   "Three"
  ],
  [
   "Winding Material",
   "Copper / Aluminium"
  ],
  [
   "Vector Group",
   "Dyn11 / Yyn0 / Yd11 / YNd11 / Dyn5"
  ],
  [
   "Feature",
   "Energy Saving"
  ],
  [
   "Standard",
   "IEC / GB"
  ],
  [
   "Certification",
   "UL, CE, ISO9001, EAC, ISO14001, ISO45001"
  ]
 ],
 "applications": "Ideal for utility substations, industrial power supply, EV charging stations, and distribution networks requiring energy-efficient 35kV step-down 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 Energy-Saving 500–3500kVA 35kV/480V Three-Phase Oil-Immersed Transformer?",
   "a": "The standard configuration is rated 500 kVA – 3500 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 35 kV input to 480 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, 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": "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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