What Is the Typical Oil Volume and Weight of a 2000 kVA Oil Immersed Transformer?
May 12, 2026
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When you begin planning the logistics, foundation design, or oil procurement for a new substation, knowing the precise oil volume and weight of a 2000 kVA oil immersed transformer is one of the very first technical questions you must answer.
At GNEE, we are a specialized oil-immersed transformer manufacturer with over 18 years of factory production experience and ISO 9001-certified quality systems. We supply 2000 kVA units to more than 150 countries, and every transformer we ship is supported by a complete, verified datasheet that removes guesswork from your project planning.
In this article, we share the typical oil litres, oil mass, and total transport weight you can expect, explain why these values vary between designs, and show you how accurate factory data helps you avoid costly delays and installation errors.
Typical Oil Volume of a 2000 kVA Oil Immersed Transformer
The oil volume of a 2000 kVA oil immersed transformer is not a single fixed number-it depends primarily on the tank design, cooling arrangement, and whether the unit uses a hermetically sealed tank or a conservator (expansion tank). However, industry practice and GNEE's accumulated production data allow us to give you accurate benchmarks for engineering planning.
Oil Volume Benchmarks for Standard 2000 kVA Designs
For the widely specified hermetically sealed 2000 kVA oil immersed transformer (corrugated fin wall tank with ONAN cooling and copper windings), the typical oil volume falls between 1,100 and 1,300 litres, corresponding to an oil mass of approximately 1,000 to 1,200 kg (mineral oil density ≈ 0.895 kg/L). At GNEE, our standard 10 kV / 0.4 kV S13 series copper-wound model holds 1,200 litres of insulating oil.
Transformers fitted with a conservator tank will carry an additional 100–200 litres due to the conservator vessel and expansion piping, bringing the total oil charge closer to 1,350–1,450 litres.
Oil Volume by Transformer Type and Cooling Configuration
| Transformer Configuration | Oil Volume (Litres) | Oil Mass (kg) |
|---|---|---|
| Hermetically sealed, copper winding, ONAN (panel radiator) | 1,200 | 1,080 |
| Hermetically sealed, copper winding, ONAF (fans added) | 1,250 | 1,120 |
| Conservator-type, copper winding, ONAN | 1,350 | 1,215 |
| Conservator-type, aluminium winding, ONAN | 1,300 | 1,170 |
| Hermetically sealed, natural ester fluid option | 1,220 | 1,100 (approx.) |
Note: All figures are typical for GNEE-built 2000 kVA, 10 kV / 0.4 kV, Dyn11, 50 Hz transformers tested to IEC 60076. Exact values vary with customer-specified voltage, impedance, and cooling-class options.
Total Weight Breakdown of a 2000 kVA Oil Immersed Transformer
The total weight of a 2000 kVA oil immersed transformer is equally critical for civil works, crane sizing, and freight classification. A complete unit ready for installation includes the active part (core and windings), the tank and cover, bushings, radiators, cooling fans (if fitted), oil, and accessories such as tap changer, gas relay, and temperature indicators.
Detailed Weight Components of a GNEE 2000 kVA Oil Immersed Transformer
Understanding how total mass is distributed helps you plan for both delivery and lifting. A typical GNEE 2000 kVA, copper-wound, hermetically sealed transformer (ONAN) breaks down as follows:
- Core and windings (active part): approximately 2,100 kg
- Tank, cover, radiators, and accessories: approximately 2,060 kg
- Insulating oil: approximately 1,080 kg (1,200 L)
- Total transport weight (oil-filled): approximately 5,240 kg
For a conservator-type design, the total weight increases to approximately 5,500–5,600 kg due to the larger oil inventory and the conservator vessel itself. Aluminium-wound alternatives can reduce the active part weight by roughly 200–250 kg, bringing the total oil-filled weight down to approximately 4,900–5,000 kg.
Transport Weight and Shipping Considerations
Many customers prefer to ship the transformer drained of oil (filled with dry nitrogen or dry air under positive pressure) to reduce freight charges and simplify heavy-lift handling. In this condition, the same hermetically sealed 2000 kVA oil immersed transformer weighs approximately 4,160 kg-the oil mass alone accounts for roughly 20–25% of the total installed weight. GNEE clearly marks both the oil-filled and oil-drained transport weight on every packing case and provides a certified weight certificate with shipment documentation.
Design Factors Influencing the Oil Volume and Weight of a 2000 kVA Transformer
When you request a quotation for a 2000 kVA oil immersed transformer, the final oil volume and weight will be determined by a set of interlinked design choices. Understanding these factors allows you to specify a transformer that balances performance, transport logistics, and installed cost.
Tank and Cooling Design: Hermetically Sealed vs. Conservator Type
A hermetically sealed transformer uses the corrugated tank walls as an expansion surface, eliminating the need for a separate conservator. This design reduces the total oil volume, simplifies maintenance, and results in a lighter overall unit. A conservator-type transformer, while slightly heavier and carrying more oil, allows visual oil level monitoring through a conservator gauge and is sometimes preferred in certain utility standards.
For most of GNEE's international clients, the hermetically sealed 2000 kVA oil immersed transformer provides the optimum balance of low weight, reduced oil inventory, and maintenance-free operation.
Winding Material: Copper vs. Aluminium and Weight Impact
Copper windings are mechanically denser than aluminium. An aluminium-wound active part weighs considerably less, which reduces both the core clamping structure load and the total transformer weight by several hundred kilograms. However, this weight saving must be carefully evaluated against copper's clear advantages in lower load losses, higher short-circuit strength, and proven long-term reliability.
Our factory default recommendation remains electrolytic copper, particularly for the 2 MVA rating class where lifecycle efficiency matters most.
Voltage Ratio, Impedance, and Customization Effects
A transformer built for a higher primary voltage-for example, 33 kV instead of 10 kV-requires additional insulation clearance, longer creepage paths, and sometimes a larger tank, all of which increase oil volume slightly. Similarly, a customer request for a non-standard impedance (e.g., 8 % instead of 6 %) alters winding geometry and can influence both weight and oil quantity.
At GNEE, we model every custom order in our design software and provide the precise predicted oil volume and weight in the technical proposal before you place an order.
Obtain Your Exact 2000 kVA Oil Immersed Transformer Oil Volume and Weight Data from GNEE
The oil volume and weight of a 2000 kVA oil immersed transformer may appear to be simple specification line items, but as this guide has shown, they sit at the intersection of transformer engineering, civil construction, logistics, and regulatory compliance.
When you partner with GNEE, you get far more than a set of approximate catalogue numbers-you receive a factory-verified, project-ready datasheet that reflects the exact design of your custom-built transformer, backed by 18 years of manufacturing experience and a global installed base.
Send us your voltage, frequency, vector group, and any special requirements today. Our engineering team will return a complete technical proposal-including guaranteed oil volume, total weight, outline drawing, and a competitive factory-direct price-within one business day.
Tel / WhatsApp:+86 15824687445
Email: sales@gneesteels.com
Your next successful substation project starts with the right technical data. Contact GNEE now and let us provide the precise 2000 kVA oil immersed transformer oil volume and weight figures you need to move forward with confidence.
What is the typical oil volume of a 2000 kVA oil immersed transformer in litres?
The typical oil volume ranges from 1,100 to 1,450 litres, with GNEE's standard hermetically sealed copper-wound unit carrying approximately 1,200 litres of mineral insulating oil.
How much does a 2000 kVA oil immersed transformer weigh without oil?
Without oil, a typical GNEE copper-wound hermetically sealed 2000 kVA unit weighs approximately 4,160 kg. The exact dry weight is documented in the factory test report.
Can GNEE provide a weight certificate for shipping and customs?
Absolutely. Every transformer is weighed on our calibrated factory weighing equipment, and a certified weight record is included in your documentation package together with the test certificates.
Does the oil volume change if I specify natural ester fluid?
The required volume is nearly identical, but the fluid density differs slightly, which changes the fluid mass by a small margin. We provide full oil volume and weight data for ester-filled options in the quotation stage.