2500 KVA Three Phase Oil Filled Transformer
Nov 07, 2025
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Premium 2500 KVA Oil-Immersed Transformer for Power Distribution
The 2500 KVA Three Phase Oil Filled Distribution Transformer is a robust and high-performance solution designed for medium voltage distribution networks. It ensures efficient voltage transformation from 35kV to low voltage levels such as 380V, 400V, or 415V, making it suitable for industrial, commercial, and public utility applications.
Manufactured using high-quality copper windings, silicon steel or amorphous alloy cores, and advanced insulation materials, this Filled Distribution Transformer delivers low loss, high efficiency, and long service life. It meets international standards including IEC, ANSI, and IEEE, making it a reliable choice for global markets.
Key Features
Rated Capacity: 2500 KVA
Voltage Levels: 35kV / 0.4kV (customizable)
Cooling: ONAN (Oil Natural Air Natural)
Efficiency: Meets GB20052-2013 Level 1
Overload Capacity: 120% for 2 hours
Noise Level: ≤ 45 dB(A)
Its compact design and reliable thermal management make it ideal for indoor and outdoor installations, including hospitals, factories, data centers, and renewable energy plants.
2500 KVA Three Phase Oil Filled Transformer Technical Specification
| Parameter | Value / Specification |
|---|---|
| Rated Power | 2500 KVA |
| Place of Origin | China |
| Model | Oil Immersed Transformer |
| Number of Phase | Three Phase |
| Coil Number | Three |
| Winding Type | Multi-winding Transformer |
| Standard Compliance | IEC, ANSI, IEEE, CCC |
| Core Shape | Ring Core |
| Usage | Power Distribution |
| High Voltage | 35kV |
| Low Voltage | 380V / 400V / 415V / 440V (custom) |
| Tapping Range | ±2×2.5% |
| Impedance Voltage | 0.04 |
| Load Loss | 2.6 ~ 2.73 kW |
| No-load Loss | ≤ 0.1% of rated power |
| No-load Current | 0.6 |
| Frequency | 50Hz / 60Hz |
| Cooling Method | ONAN |
| Connection Group | Dyn11 / Yyn0 / Yd11 / YNd11 |
| Coil Material | 100% Copper (Aluminum optional) |
| Transformer Weight | 300 ~ 2000 kg (varies by configuration) |
Accessories & Optional Components
To enhance performance, safety, and serviceability, the transformer supports the following components:
- Buchholz Relay: Fault detection via gas and oil surge monitoring
- Oil Temperature Indicator (OTI): Real-time oil temperature feedback
- Winding Temperature Indicator (WTI): Overheating protection
- Pressure Relief Device: Explosion prevention via pressure release
- Magnetic Oil Level Gauge: Accurate oil level monitoring
- Radiators / Cooling Fins: Optional forced-air fans for heavy-duty cooling
- On-load / Off-load Tap Changer: Voltage regulation adaptability
- Earthing Terminals & Surge Arresters: Ensuring safety under faults or lightning
- Breather with Silica Gel: Moisture protection for the conservator tank
2500 KVA Oil type Transformer Application
The 2500 KVA three phase oil filled transformer is suitable for:
Hospitals (e.g., Mendoza Hospital Case Study in Argentina)
Industrial factories and processing plants
Commercial complexes and high-rise buildings
Data centers and IT infrastructure
Solar or wind energy hybrid grid stations
Rural electrification and public utility grids
In one application, a large medical center in Argentina deployed this model with a forced-air cooling system and emergency switching. The transformer's stability ensured uninterrupted power for critical care units and hospital operations.
Warranty & Service Life
Standard Warranty: 2 years (extendable)
Expected Lifespan: 25–40 years
Maintenance Tip: Scheduled testing and thermal diagnostics can extend service life by 30%+
Price Factors for 2500 KVA Oil Transformers
Several variables influence the total cost:
| Component | Options & Impact on Price |
|---|---|
| Core Material | Amorphous Alloy (cost↑, efficiency↑), or Silicon Steel |
| Winding Material | Copper (durability↑, price↑) or Aluminum (budget-friendly) |
| Accessories | International Brands (ABB, Schneider) cost more |
| Efficiency Compliance |
DOE 2016 & GB20052 compliance may increase cost 30% |
company profile
GNEE TRANSFORMER has strong production capacity and an efficient marketing team.
Our transformer products include 500kV, 400kV, 330kV, 220kV, and 110kV ultra-high voltage transformers, various dry-type transformers/oil immersed transformers/amorphous alloy transformers of 35kV and below, new energy transformers, and prefabricated substations,
Export series: single-phase transformer, three-phase transformer, cylindrical transformer, isolation transformer, control transformer, voltage regulator and other products, And various specifications of special transformers such as grounding transformers, arc suppression coils, Bitcoin transformers, prefabricated cabins, reactors, electric furnace transformers, rectifier transformers, mining transformers, marine transformers, etc.
GNEE TRANSFORMER has successively passed ISO9001, ISO14001, ISO45001, SA8000 system certification. At the same time, 10kV and 35KV level distribution transformers and box type substations have obtained interna- tional Electrotechnical Commission IEC certification, US UL certification, German TUV certification, EU CE certification, Dutch KEMA certification, and GOST certification. Our product sales cover the global market, including 72 countries and regions such as the United States, Europe, Canada, Mexico, etc.
transformer Workshop equipment display
types of transformer from GNEE
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GNEE Transformer Order specification
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When choosing our company's products, please provide the following data to better serve you. |
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Demander: |
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Project technical leader: |
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Mailbox: |
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Transformer type selection |
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□Dry transformer {□SC(B) Epoxy resin □SC(B) Non-encapsulated} □American Box(ZGS) {□Terminal type(-Z-) □Ring network type(-H-)} □European Box change(YBM){□ Dry change □Oil change} |
□ Oil-immersed transformer{□ Fully sealed(-M-) □Oil-bearing pillow} □Amorphous alloy transformer{□Dry amorphous □ Oil amorphous} □ Special transformer{Rectifier, Furnace, Mine, Etc} |
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Transformer basic data selection
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Country of use: |
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Phase number: |
□Three-phase(S conventional) □ Monophase □Other( ) |
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Frequency: |
□50Hz(conventional) □60Hz □ Other( ) |
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Transformer oil: |
□#25(conventional) □#45(minimum temperature below-25℃) |
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Rated capacity: |
□( )kVA Conditions of use □Outdoor type □Indoor type |
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Altitude: |
□Less than 1000m(conventional) □1000-2000m □3000m以上 over |
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Rated voltage(High voltage) |
□6kV □10kV □20kV □35kV □66kV □110kV □220kV □Other( ) |
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Rated voltage(Low pressure) |
□0.4kV □0.66kV □10kV □10.5kV □35kV □其他 Other( ) |
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Connected group |
□Dyn11(conventional) □Yyn0 □YNd11 □li0(Single-phase) □Other( ) |
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Impedance(%): |
□4% □4.5% □5.5% □6% □6.5% □7.5% □8% □Other( ) |
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Voltage regulation mode |
□Voltage regulation without excitation(conventional) □On-load voltage regulation(Z) |
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Voltage regulation range |
□±2*2.5% □±5% □±3*2.5% □Other( ) |
Transformer accessory selection
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□Fan □Temperature control{□ Common □With 485 computer interface} □Dry case{□ Ordinary steel sheet □Aluminum alloy » Stainless steel} □Protection level of dry case(□IP20(Conventional) □IP( )} □Dry case height requirements{□None □Requirements[ ]} □ Cable out mode of the dry variable shell {□ Up-and-out □ Up-and-down □Down-in/DOWN-out □Down-in/UP-out □Down-in/DOWN-out □Down-in/ side-out [□Left □ Right-out]} |
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Note: 1. (Dry change requirements s 100kVA transformer does not include fans, such as fans, need to be charged 2. (Oil changes <630kVA transformer does not include temperature control, gas relay, if necessary, need to increase the fee) |
Other special requirements(additional charges apply below)
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Dry transformer |
□Shell and bottom plate{□Ordinary □Fully sealed} □Travel switch □Magnetic lo □Zero sequence transformer □Copper bar to the low voltage cabinet □Protective mesh □Lighting □100kVA or less Fan □Shock absorber |
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Oil-immersed transformer |
□No.45 oil for non-low temperature areas □Designated brand on-load voltage regulator □400kVA and below low voltage outlet OABC phase with wiring terminals □630kVA or below requires temperature control □800kVA or below Low voltage outlet phase 0 requires wiring terminals □630kVA and below must be equipped with gas relay |
GNEE TRANSFORMER Industrial Layout
Asia:China, Philippines, Cambodia, Malaysia, Pakistan, Indonesia, Vietnam, Mongolia, Japan, Taiwan Province, Bangladesh, Sri Lanka, Lebanon, Saudi Arabia, Turkey, Armenia, Saudi Arabia, Saudi Arabia, Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan
Africa:Egypt, Ethiopia, Angola, Botswana, Burundi, Cape Verde, Congo, Guinea, Ghana, Gabon, Zimbabwe, Cameroon, Kenya, Rwanda, Malawi, Mauritius, Mauritania, Mozambique, South Africa, Nigeria, Somalia, Chad, Central Africa
North America: Aruba, Panama, Dominican Republic, Costa Rica, Honduras, Caribbean region,Canada, United States, Mexico, El Salvador, Guatemala, Jamaica
Europe: Bulgaria, North Macedonia, Finland, Norway, Ukraine, Greece, Hungary, Italy, United Kingdom
South America: Argentina, Paraguay, Ecuador, Colombia, Guyana, Mexico, Uruguay, Chile
Middle East: The Middle East region
Oceania: Australia, Papua New Guinea. Fiji