
S13 Three Phase 20kVA Energy Saving Oil Immersed Medium Voltage Distribution Electrical Transformer Charging Station Substation Box Type Ultra High Box. Energy Saving Performance: No-load loss reduced by 30% compared to S11 series; load loss reduced by 25%. Fully Sealed Design: Maintenance-free operation with oil isolated from air to prevent oxidation and aging. Short Circuit Resistance: High-strength insulating components and pull screws prevent coil deformation during short circuits. Harsh Environment Adaptability: Suitable for humid, dusty, and corrosive environments like chemical plants and coastal areas. Efficient Heat Dissipation: Corrugated oil tank wall combined with transformer oil ensures high cooling efficiency. Customizable Winding Material: Available in Copper or Aluminum winding options based on customer requirements. Flexible Connection Options: Supports Yyn0 or Dyn11 connection configurations for diverse power systems. ISO9001 & CCC Certified: Manufactured under strict quality management systems with recognized certifications.