2025-07-16
How much does a 800 kva transformer weight?The weight of an 800 kVA transformer depends heavily on its type, design, cooling method, voltage class, and manufacturer. We offer various models of 800kVA transformers.
Typical Weight Range: 2,000 kg to 4,000 kg (4,400 lbs to 8,800 lbs).
Most Common Estimate: Around 2,500 kg to 3,500 kg (5,500 lbs to 7,700 lbs) is a frequently seen range for standard distribution transformers (e.g., 11kV/0.4kV or 33kV/0.4kV).
Factors Influencing Weight:
Cooling: ONAN (Oil Natural Air Natural) is standard. Adding fans (ONAF) adds a little weight.
Construction: Core material (grain-oriented steel), winding material (copper is denser than aluminum), tank size/thickness.
Accessories: Conservator tank, Buchholz relay, temperature gauges, pressure relief device, tap changer (manual vs. on-load).
Voltage Class: Higher primary voltages (e.g., 33kV vs 11kV) require more insulation and larger clearances, increasing size and weight.
Efficiency Class: Higher efficiency (e.g., IE4) often means more active material (core/windings), increasing weight.
Enclosure: Plain tank vs. corrugated tank vs. external radiators.
Generally Lighter: Typically weigh less than oil-immersed equivalents.
Typical Weight Range: 1,200 kg to 2,500 kg (2,650 lbs to 5,500 lbs).
Most Common Estimate: Often found around 1,500 kg to 2,200 kg (3,300 lbs to 4,850 lbs) for 800 kVA cast resin or VPI transformers.
Factors Influencing Weight:
Insulation Type: Cast resin transformers are usually heavier than Vacuum Pressure Impregnated (VPI) transformers of the same rating.
Enclosure: Open (Ventilated) vs. Encapsulated (Epoxy Resin) vs. Enclosed (with cooling fans). Encapsulated and enclosed add weight.
Cooling: AA (Air Natural) vs. AFA (Air Forced). Adding fans adds weight.
Voltage Class & Construction: Similar factors as oil-filled.
| Transformer Type | Typical Weight Range | Most Common Estimate |
|---|---|---|
| Oil-Immersed | 2,000 kg - 4,000 kg | 2,500 kg - 3,500 kg |
| (4,400 lbs - 8,800 lbs) | (5,500 lbs - 7,700 lbs) | |
| Dry-Type | 1,200 kg - 2,500 kg | 1,500 kg - 2,200 kg |
| (2,650 lbs - 5,500 lbs) | (3,300 lbs - 4,850 lbs) |
Never rely solely on estimates for critical purposes like structural support, lifting, or transportation planning.
Always obtain the exact weight from the manufacturer's datasheet, specification sheet, or nameplate for the specific model and configuration you are using or considering.
Specify the required voltage levels, cooling type, and efficiency class when requesting quotes or data to get the most accurate weight information.
