Description
High-performance 3150 kVA 35 kV Oil-immersed Transformer provides stable power supply suitable for various power engineering scenarios.
Currently, the power infrastructure sector commonly faces industry pain points such as high losses in medium-voltage transformers, excessive temperature rise under heavy loads, and insufficient adaptability to outdoor operating conditions. Many purchasers often encounter problems such as high energy consumption during equipment operation, poor compatibility with supporting equipment, and persistently high long-term maintenance costs. To address these challenges, our factory has launched a high-performance 3150 kVA 35 kV oil-immersed transformer. Combined with compatible High And Low Voltage Switchgear and Electric Power Converter, it can complete the construction of a complete power system. It can also be matched with Dry Type Transformer, Box Type Substation, and Combined Photovoltaic Substations to form an integrated power supply solution, comprehensively covering the needs of industrial, photovoltaic power plants, and urban substation projects. The equipment adopts a low-loss iron core and insulating oil cooling structure, significantly reducing no-load losses. 35 kV high-voltage insulation technology enhances outdoor weather resistance, keeping voltage fluctuations within a minimal range during long-term full-load operation. This reduces monthly electricity costs for enterprises and shortens equipment downtime, ensuring uninterrupted and stable power supply to factories and photovoltaic power plants. This oil-immersed transformer is suitable for self-owned power stations in industrial and mining enterprises, combined photovoltaic substations in large photovoltaic parks, and urban and rural power grid renovation projects. It can be independently assembled with a high and low voltage switchgear to form a box-type substation, or it can work in conjunction with an electric power converter to regulate transmission current. Compared to dry-type transformers of the same specifications, it offers advantages such as lower cost, stronger heat dissipation efficiency, and large-capacity heavy-load adaptability, making it the mainstream choice for medium and high voltage power grid expansion and new energy substation projects.
Product Features
Low-loss and energy-saving design: The iron core is made of high-permeability magnetic material, significantly reducing no-load and load losses. Long-term operation effectively reduces electricity operating costs, making it suitable for large factories and photovoltaic power plants with long-term uninterrupted operation. Integrated and Compatible: Seamlessly connects to High and Low Voltage Switchgear and Electric Power Converters, and flexibly integrates into Box Type Substations and Combined Photovoltaic Substations systems, simplifying engineering assembly and adaptation.
Maintenance Tips
Regularly Inspect Insulating Oil Condition: Sample and test the withstand voltage of the oil-immersed transformer’s insulating oil every six months. Replace the oil promptly if it fails to meet standards to prevent equipment failure caused by insulation aging.
Select the Right Model Based on Operating Conditions: For indoor enclosed spaces, prioritize Dry Type Transformers. For outdoor open-air substation projects, choose this 3150 kVA 35 kV Oil-immersed Transformer to extend equipment lifespan.
FAQ (Frequently Asked Questions)
Q: In which scenarios is this 3150 kVA 35 kV Oil-immersed Transformer suitable?
A: It can be used for urban power grid upgrades, large factory self-supplied power supply, and photovoltaic power plants. Combined Photovoltaic Substations, when paired with High and Low Voltage Switchgear, can be assembled into complete Box Type Substations, suitable for most medium and high voltage transmission projects.
Q: What is the routine maintenance cycle for the equipment?
A: Basic appearance and oil temperature inspections are conducted monthly; insulation oil testing and terminal tightening are conducted every six months. Compared to Dry Type Transformers, oil-immersed equipment has a simpler maintenance process and lower consumable procurement costs.
Q: What services are included in the after-sales warranty?
A: The entire unit comes with a three-year warranty and complete installation drawings. Technicians can remotely guide the equipment’s connection and commissioning with Electric Power Converters and high and low voltage switchgear. Replacement parts can be quickly dispatched in case of component failure.
Q: Does it support customized complete sets of equipment?
A: It supports custom-fitting with High and Low Voltage Switchgear and Electric Power Converters as needed. Integrated Box Type Substation solutions adapted to Combined Photovoltaic Substations can also be customized.
| Rated Capacity (kVA) | HV Rated Voltage (kV) | HV Tapping Range | LV Rated Voltage (kV) | Vector Group | No-Load Loss (kW) | Load Loss (kW) | No-Load Current (%) | Short-Circuit Impedance (%) |
|---|---|---|---|---|---|---|---|---|
| 2000 | 35 | ±3×2.5% | 6.3 / 10.5 | Yd11 | 1.3 | 15.8 | 0.8 | 6.5 |
| 2500 | 35 | ±3×2.5% | 6.3 / 10.5 | Yd11 | 1.5 | 18.7 | 0.8 | 6.5 |
| 3150 | 35–38.5 | ±3×2.5% | 6.3 / 10.5 | Yd11 | 1.8 | 22.2 | 0.72 | 6.5 |
| 4000 | 35–38.5 | ±3×2.5% | 6.3 / 10.5 | Yd11 | 2.1 | 26.2 | 0.72 | 7 |
| 5000 | 35–38.5 | ±3×2.5% | 6.3 / 10.5 | Yd11 | 2.6 | 30.8 | 0.68 | 7 |
| 6300 | 35–38.5 | ±3×2.5% | 6.3 / 10.5 | Yd11 | 3.1 | 33 | 0.68 | 7 |
| 8000 | 35–38.5 | ±5% / ±3×2.5% | 6.3 / 6.6 / 10.5 / 11 | YNd11 | 4.3 | 36.5 | 0.6 | 7.5 |
| 10000 | 35–38.5 | ±5% / ±3×2.5% | 6.3 / 6.6 / 10.5 / 11 | YNd11 | 5.1 | 43.2 | 0.6 | 7.5 |
| 12500 | 35–38.5 | ±5% / ±3×2.5% | 6.3 / 6.6 / 10.5 / 11 | YNd11 | 6 | 51.1 | 0.56 | 7.5 |
| 16000 | 35–38.5 | ±5% / ±3×2.5% | 6.3 / 6.6 / 10.5 / 11 | YNd11 | 7.2 | 63.3 | 0.54 | 8 |
| 20000 | 35–38.5 | ±5% / ±3×2.5% | 6.3 / 6.6 / 10.5 / 11 | YNd11 | 8.5 | 74.4 | 0.54 | 8 |
| 25000 | 35–38.5 | ±5% / ±3×2.5% | 6.3 / 6.6 / 10.5 / 11 | YNd11 | 10.1 | 88 | 0.48 | 8 |
| 31500 | 35–38.5 | ±5% / ±3×2.5% | 6.3 / 6.6 / 10.5 / 11 | YNd11 | 12 | 104.4 | 0.42 | 8 |
