2025-07-15
For transformers with a capacity of 630 kilovolts, please contact our company if you need them.The weight of a 630 kVA transformer varies significantly based on its type (dry-type or oil-immersed), design, and manufacturer. Here's a comparison of typical weight ranges.
Cast Resin or Vacuum Pressure Impregnated
Weight Range: 800 kg to 1,500 kg
Key Influences:
Cooling Class: AA (air-air) units are lighter than AFA (air-forced air).
Core Material: Amorphous cores are heavier than CRGO steel.
Insulation: Cast resin designs are robust but heavier than VPI.
Winding Material: Copper windings add ~25% more weight than aluminum.
Mineral/Oil-Filled
Weight Range: 1,200 kg to 2,500 kg
Key Influences:
Tank Material: Steel tanks dominate; thicker tanks increase weight.
Oil Volume: ~300-500 liters of oil adds 270–450 kg alone.
Accessories: Radiators, conservators, and bushings contribute extra mass.
Efficiency Class: Higher efficiency (e.g., IE4) often means larger cores, increasing weight.
Voltage Class: Higher voltages (e.g., 33kV vs. 11kV) require more insulation, increasing weight.
Impedance: Higher impedance designs use more material.
Standards: IEC/DIN units differ from ANSI designs.
Add-ons: Fans, protective housings, or seismic reinforcements add mass.
| Parameter | Dry-Type (Cast Resin) | Oil-Immersed |
|---|---|---|
| Weight (kg) | 950–1,300 | 1,500–2,200 |
| Height/Width (mm) | ~1200 × 800 | ~1500 × 1000 |
| Noise Level | 50–60 dB | 55–65 dB |
| Efficiency (IE) | IE3/IE4 | IE2/IE3 |
