Description
125 kVA 10 kV Low-Loss Oil Immersed Transformer for Multi-Scenario Power Distribution Equipment
Traditional power distribution equipment generally suffers from high no-load losses and high long-term electricity costs. Many purchasers also encounter problems with poor compatibility with High And Low Voltage Switchgear and insufficient stability in outdoor conditions. This 125 kVA 10 kV low-loss oil immersed transformer utilizes a high-permeability magnetic core with optimized winding structure and a sealed, heat-dissipating oil tank design to specifically address energy consumption and matching challenges. After deployment, no-load losses are significantly reduced compared to conventional models, resulting in substantial reductions in long-term maintenance costs. It can be installed independently outdoors or integrated into box-type substations and Combined Photovoltaic Substations, catering to diverse power supply needs in industrial plants, urban and rural power grids, and photovoltaic power plants. Compared to dry-type transformers of the same capacity, this product boasts superior heat dissipation efficiency and lower overall procurement and maintenance costs. When paired with an Electric Power Converter, it achieves stable voltage regulation, adapting to the continuous power supply needs of small and medium-sized production lines, rural power distribution networks, and distributed photovoltaic projects. Its core value lies in three dimensions: long-term energy saving, operating condition compatibility, and complete system compatibility.
The entire unit utilizes high-purity cold-rolled silicon steel sheets to reduce hysteresis losses, and a fully sealed oil tank eliminates leakage risks. It is suitable for a wide range of ambient temperatures from -30°C to 45°C, allowing for long-term outdoor operation without frequent downtime for maintenance. The equipment can be directly connected to complete high and low voltage distribution cabinets, adapting to integrated photovoltaic substation solutions. When linked with various power conversion devices, voltage fluctuations are controlled within a standard range, effectively avoiding losses in production lines and grid-connected photovoltaic equipment caused by voltage instability. It is widely used in rural power grid upgrades, small factory power distribution, distributed photovoltaic grid connection, and commercial park outdoor power distribution projects, making it a core medium-voltage power distribution device that balances economy and stability.
Product Features
1.Ultra-Low Loss Core Structure:Optimized core splicing process results in no-load losses far below industry standards, leading to continuous energy cost savings over long-term operation and suitability for year-round uninterrupted power supply.
2.Fully Compatible with Complete Systems:Can be freely paired with High and Low Voltage Switchgear and Electric Power Converters. It can integrate Box Type Substations and Combined Photovoltaic Substations, allowing for complete power distribution system setup without additional modifications.
Usage Tips
1.Reserve basic ventilation space during installation.For outdoor use, a simple oil-proof enclosure is provided to reduce the erosion of the sealing structure by rain and dust, extending the service life of the equipment’s sealing components.
2.Simultaneously test the insulating oil performance during annual maintenance.Using a dedicated oil filter to remove impurities can reduce the aging rate of internal windings and prevent sudden power outages.
FAQ (Frequently Asked Questions)
Q1:How to select between this Oil Immersed Transformer and Dry Type Transformer?
A1: For outdoor open areas, photovoltaic power stations, and power distribution around factories, this oil-immersed equipment is the preferred choice due to its strong heat dissipation and lower cost. For indoor enclosed buildings, hospitals, and other scenarios with high fire safety requirements, the Dry Type Transformer can be selected.
Q2: Can the equipment be directly installed in a Box Type Substation?
A2: Yes, the standardized design of the unit accommodates the internal installation space of mainstream box-type substations. High and low voltage wiring ports are pre-installed at the factory, allowing direct connection to the High and Low Voltage Switchgear inside the box.
Q3: Is an Electric Power Converter required when using the equipment in a photovoltaic project?
A3: For distributed photovoltaic grid-connected scenarios, an Electric Power Converter is recommended to stabilize the output voltage on the photovoltaic side, reduce grid harmonics, and adapt to the entire power supply system of Combined Photovoltaic Substations.
Q4: What is the routine maintenance cycle, and what are the core inspection items?
A4: Basic inspections are conducted quarterly, with a comprehensive inspection performed annually. Key checks include oil level, leaks at seals, tightness of wiring terminals, and purity of insulating oil. Any abnormalities should be addressed promptly.
Q5: What is the after-sales warranty period for the equipment, and how is technical support provided for overseas projects?
A5: The core winding and oil tank are guaranteed for three years, and a complete set of acceptance documents is included with the product. For overseas orders, online remote technical guidance is provided, along with standardized installation and maintenance manuals, and assistance is offered in completing on-site commissioning.
| Rated Capacity (kVA) | HV Rated Voltage (kV) | HV Tapping Range | LV Rated Voltage (kV) | Vector Group | Level 1 No-Load Loss (kW) | Level 1 Load Loss (kW) | Level 2 No-Load Loss (kW) | Level 2 Load Loss (kW) | Level 3 No-Load Loss (kW) | Level 3 Load Loss (kW) | Short-Circuit Impedance (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 30 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.08 | 0.505/0.480 | 0.08 | 0.630/0.600 | 0.1 | 0.630/0.600 | 4 |
| 50 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.1 | 0.730/0.695 | 0.1 | 0.910/0.870 | 0.13 | 0.910/0.870 | 4 |
| 68 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.11 | 0.870/0.830 | 0.11 | 1.090/1.040 | 0.15 | 1.090/1.040 | 4 |
| 80 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.13 | 1.050/1.000 | 0.13 | 1.310/1.250 | 0.18 | 1.310/1.250 | 4 |
| 100 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.15 | 1.260/1.200 | 0.15 | 1.580/1.500 | 0.2 | 1.580/1.500 | 4 |
| 125 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.17 | 1.510/1.440 | 0.17 | 1.890/1.800 | 0.24 | 1.890/1.800 | 4 |
| 160 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.2 | 1.850/1.760 | 0.2 | 2.310/2.200 | 0.28 | 2.310/2.200 | 4 |
| 200 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.24 | 2.180/2.080 | 0.24 | 2.730/2.600 | 0.34 | 2.730/2.600 | 4 |
| 250 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.29 | 2.560/2.440 | 0.29 | 3.200/3.050 | 0.4 | 3.200/3.050 | 4 |
| 315 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.34 | 3.060/2.920 | 0.34 | 3.830/3.650 | 0.48 | 3.830/3.650 | 4 |
| 400 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.41 | 3.610/3.440 | 0.41 | 4.520/4.300 | 0.57 | 4.520/4.300 | 4 |
| 500 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.48 | 4.330/4.120 | 0.48 | 5.410/5.150 | 0.68 | 5.410/5.150 | 4 |
| 630 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.57 | 4.960 | 0.57 | 6.200 | 0.81 | 6.200 | 4.5 |
| 800 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.7 | 6.000 | 0.7 | 7.500 | 0.98 | 7.500 | 4.5 |
| 1000 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.83 | 8.240 | 0.83 | 10.300 | 1.15 | 10.300 | 4.5 |
| 1250 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.97 | 9.600 | 0.97 | 12.000 | 1.36 | 12.000 | 4.5 |
| 1600 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 1.17 | 11.600 | 1.17 | 14.500 | 1.64 | 14.500 | 4.5 |
| 2000 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 1.55 | 14.600 | 1.55 | 18.300 | 1.94 | 18.300 | 5 |
| 3000 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 1.83 | 16.900 | 1.83 | 21.200 | 2.29 | 21.200 | 5 |
