3150 kVA Transformer | Higher Efficiency, Lower Losses
OMEK Power’s 3150 kVA transformer is designed as an off-circuit tap-changing distribution transformer, featuring ultra low no-load and load losses as it adopts:
✅ Advanced 3D triangular stereo wound core
✅ Top tier silicon steel core material
Our 3150 kVA transformers are fully compliant with IEC 60076, EN 60076 and VDE standards, and have outstanding high short-circuit withstand capability.
We provide fast production within 15–20 working days, contact us for a free proposal if you are interested!
OMEK 3150 kVA Transformer Advantages
✅ High Power Capacity: OMEK’s 3150 kVA transformer can support large power loads of heavy industrial equipment and renewable energy projects.
✅ High Energy Efficiency: Premium copper foil raw materials and silicon steel core help minimize no-load losses and reduce costs.
✅ Low Noise Design: Designed in accordance with IEC 60076-10 noise level requirements, also we can customize more lower noise for noise-sensitive applications.
✅ Excellent Thermal Performance: The oil type adopts insulating oil that has both electrical insulation and heat dissipation. Suitable for high temperature places.
- Common Voltage Configurations for OMEK's 3150 kVA Transformer
High voltage up to 38.5kV
10kV class: 6, 6.3, 6.6, 10, 10.5, 11kV
20kV class: 20, 22, 24kV
35kV class: 33, 35, 36, 37, 38.5kV
OMEK Power 3150 kVA Transformer
OMEK Power 3150 kVA transformer can be designed as oil immersed type or the dry type. Each has its unique features and all are passing the complete test procedures.
3150 kVA 3 Phase Cast Resin Dry Type Transformer
3150 kVA cast resin dry type transformer adopts epoxy resin material, an insulating glue, by using specialized casting equipment to cast the coil in a vacuum state. It shows great performance even in harsh environments such as dust and humidity.
3150 kVA 6-10 kV Class Cast Resin Dry Type Transformer Core Electrical Specifications
| Parameter Item | Value |
|---|---|
| Rated Capacity | 3150 kVA |
| High Voltage Rated Value | 6, 6.3, 6.6, 10, 10.5, 11 kV (3-35kV) |
| High Voltage Tap Range | ±2×2.5%, ±5% |
| Low Voltage Rated Value | 3, 3.15, 6, 6.3 kV |
| Vector Group Symbol | Dyn11, Yd11, Yyn0 |
| No-load Loss | 5.04 kW |
| Load Loss (130℃(B), Reference Temperature 100℃) | 19.7 kW |
| Load Loss (155℃(F), Reference Temperature 120℃) | 20.9 kW |
| Load Loss (180℃(H), Reference Temperature 145℃) | 22.3 kW |
| No-load Current | 0.60% |
| Short-circuit Impedance | 7.00% |
| Enclosure Protection Class | IP23 and above -IP33 (waterproofing grade) |
| Standard | ANSI/IEC 60076 |
| Cooling Type | ANAF |
| Production Time | 15-20 days |
| Core Material | Silicon Steel |
| Characteristic | High efficiency, low losses, high short-circuit withstand capability |
3150 kVA 3 Phase Oil Filled Transformer
OMEK Power 3150 kVA oil filled transformer is complying with the standards of ANSI C57.12.00, IEC60076, VDE etc. It uses high quality C.R.G.O type core, quality oxygen-free copper coil, delivering much lower no-load loss and on-load loss. Good appearance and safe operation.
| Item | Specification |
|---|---|
| Transformer Type | Power Transformer |
| Rated Capacity | 3150 kVA |
| Rated Voltage | 3.3 / 0.72 kV (Customizable in practice) |
| Number of winding | 2 (HV & LV) |
| Number of Phases | Three-phase |
| Tap changer | ±2×2.5% |
| Frequency | 50 Hz |
| Refrigerant | Mineral oil |
| Cooling Mode | KNAN/KNAF – ONAF |
| Vector Group | Dyn11 |
| No-loading loss | 4050W |
| Tolerance | 10% |
| Loading loss | 25210W |
| Tolerance | 10% |
| Efficiency | 98.8 |
| Ambient Temperature | up to 40 ℃ |
| Operation Mode | Continuous Operation |
| Total Weight | 6.5 Ton / 14330 lb |
| Manufacturer | Jinan Omek Electric Power Co., Ltd. |
| Origin | China |
| Lead Time | ≤5 pcs, 15 days, or negotiated |
Accessories of 3150 kVA Oil Filled Transformer
All of our accessories are manufactured from durable materials. We can also customize any accessory per your special requirement on the materials.
🔹Lifting lugs
🔹Rating and diagram plate
🔹Fixing lugs
🔹Oil drain and sample valve
🔹Earthing terminal
🔹Oil gauge
🔹Off load tap changer
🔹Thermometer pocket
3150 kVA 3 Phase Oil Filled Transformer Routine Tests
Each of the routine test listed are what we conducted on the oil immersed 3150 kVA 3 phase transformers. Relevant testing certifications can be provided upon your request.
✅ Testing of Winding Resistance
✅ Testing of Voltage Ratio Connection Symbol
✅ Testing of the Winding Insulation Resistance to Earthing
✅ Insulation Routine Test
✅ Measurement of No-Load Current, No loadloss, Impedance and Load Loss
✅ Transformer Insulation Oil Test
✅ Test of the Leakage Test
Trafo 3150 kVA Low Loss Design Supports Eco Design Requirement
OMEK is always on the way to optimize the iron core structure and windings to reach a lower no-load loss and load loss. Thus in our 3150 kVA transformer long service life cycle, less energy is wasted during operation, contributing to lower CO₂ emissions to the earth.
Our sustainable act to meet Eco Design efficiency requirements gains high recognization from more and more customers, especially from European countries.
Fast Delivery Direct from OMEK Factory
For orders that less than 5 units of 3150 kVA transformer, our lead time is 2-3 weeks. This can ensure continuous operation of your project.
Large amounts order will be shipped in batches to meet your project schedule.
Integrated with raw material production bases, OMEK Power developed a complete industrial supply chain, significantly shortening the delivery time.
FAQs
Have any questions? We’re here to help you out.
For a 3150 kVA transformer, there are 3 main factors affecting its price. They are voltage rating, oil/dry transformer type and loss requirements. Below is the price range of a 3150 kVA transformer from China Jinan Omek Electric Power Co., Ltd. for your reference. Contact us for a specific quote if you are interested.
| Voltage Class | Core | Price |
|---|---|---|
| 10.5kV/6.3kV | Traditional laminated iron core | Oil filled: €22,154 ~ €27,048 |
| Dry type: €26,204 ~ €34,776 |
▪️Hitachi Energy: transformer business covering over 90 countries
▪️Siemens Energy: has self-owned production bases in 7 countries
▪️Schneider Electric: transformer factories are distributed in 28 countries
▪️OMEK Power: transformer business covers over 40 countries, has its own overseas sites in Indonesia and Africa
The weight of OMEK’s 3150 kVA oil immersed transformer 3.3/0.72 kV is 6465kg.
The dimension of OMEK’s 3150 kVA oil immersed transformer 3.3/0.72 kV is 2245*2282*2320mm.
The impedance of OMEK’s 3150 kVA oil immersed transformer 3.3/0.72 kV is 5.5%.
OMEK’s 3150 kVA three-dimensional wound core oil-immersed transformer has a total weight of approximately 6.5 metric tons (6,500 kg), including approximately 1.25–1.39 metric tons of insulating oil.