GE Transformer manufactures high-efficiency 20kV class three phase oil immersed distribution transformers designed for substations, industrial facilities, commercial buildings, and renewable energy systems.
Our transformers comply with IEC 60076 and GB/T 1094 standards, ensuring reliable performance, low energy loss, and long service life over 30 years.
Compared with 10kV systems, the 20kV power distribution solution significantly increases transmission capacity, improves voltage quality, and reduces system investment costs.
Key Features & Advantages
1. High Energy Efficiency
Available in S11, S13, and S20 energy saving series
Noâ??load loss reduced by up to 40%
Optimized silicon steel core design
Lower operational and lifecycle costs
2. Premium Copper Windings
High-purity electrolytic copper conductors
LV winding: copper foil cylindrical structure
HV winding: multi-layer cylindrical design
Balanced ampere-turn distribution
Excellent short-circuit withstand capability
3. Advanced Insulation & Oil Treatment
Vacuum drying of core and windings
Vacuum oil filtration and filling process
Nitrogen sealing to prevent oxidation and moisture
Enhanced dielectric strength
4. Fully Sealed Corrugated Tank Design
Corrugated oil tank with thermal expansion compensation
No external conservator required (optional conservator type available)
Prevents moisture ingress and oil aging
Maintenance-free operation
5. Strong Mechanical Structure
Core and windings securely clamped
Anti-loosening lock nuts
Withstands transportation shock and vibration
Item Specification
Rated Voltage (HV) 20kV
Rated Voltage (LV) 0.4kV or customized
Capacity Range 30 -3000 kVA
Phase Three-Phase
Frequency 50Hz / 60Hz
Cooling Method ONAN (Oil Natural Air Natural)
Insulation Class Class A
Vector Group Dyn11 / Yyn0 (optional)
Tap Changer ±5% or ±2-2.5% Off-Circuit Tap Changer
Impedance Voltage According to IEC standard
Noâ??Load Loss As per S11 / S13 / S20 standard
Load Loss According to capacity rating
Noise Level 60 dB at 1 meter
Oil Tank Type Corrugated sealed / Conservator type
Altitude 1,000m or Customized
Accessories Conservator tank, oil level indicator, gas relay, pressure relief valve, etc.
Standards IEC60076 ANSI C57, IEEE, UL, CSA
Warranty Typically one year, depending on the client's specific needs
Delivery Time Generally, it is 20-30 days. It is according to the quantity.