Description
400 kVA 10 kV All-Copper Oil-immersed Transformer: Core Equipment for Outdoor Power Distribution
Currently, the power distribution industry commonly suffers from high losses in aluminum core transformers, leading to overheating and aging under overload conditions. Purchasers often face challenges such as short equipment lifespan, substandard grid connection parameters, and high ongoing maintenance costs. This 400 kVA 10 kV all-copper oil-immersed transformer offers a solution using high-purity copper windings and a fully sealed heat dissipation structure. It can stably operate at full load in factories and photovoltaic power plants for extended periods, resulting in reduced energy consumption and significantly decreased failure frequency, effectively compressing the overall project cost throughout its lifecycle. This equipment is often used in conjunction with a High And Low Voltage Switchgear to build basic power distribution systems. Compared to a Dry Type Transformer of the same specifications, it has stronger heat dissipation capacity and is more suitable for outdoor scenarios with limited ventilation, such as in the field and industrial mines. It can be deployed independently or integrated into a Box Type Substation. It is compatible with Combined Photovoltaic Substations for centralized photovoltaic power supply projects. Combined with an Electric Power Converter, it completes AC/DC voltage conversion and is widely used in industrial parks, rural power grids, large-scale photovoltaic power plants, and temporary power supply in mines. The all-copper winding material has lower resistance and excellent short-circuit withstand performance, maintaining stable output even under fluctuating production loads and extreme high and low temperature environments. The equipment undergoes a full set of insulation, withstand voltage, and loss tests at the factory, conforming to internationally recognized power distribution standards. Complete testing documentation is provided with bulk deliveries, adapting to various power engineering procurement needs both domestically and internationally. Long-term operation requires no frequent downtime for maintenance, extending its service life by nearly ten years compared to aluminum core equipment, reducing economic losses from downtime maintenance. Combining economy and operational stability, it is a cost-effective main choice for medium to large-scale outdoor power distribution projects.
| 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 |
Product Features
1.Pure Copper Winding Low-Loss Structure: Utilizing high-purity electrolytic copper windings, the coils exhibit superior no-load and load losses compared to industry standards, resulting in lower long-term electricity costs. It also boasts excellent resistance to short-circuit impacts, making it suitable for industrial and mining applications and photovoltaic scenarios with significant load fluctuations.
2.Fully Sealed Oil-Immersed Cooling System: The corrugated cooling structure of the oil tank eliminates the need for an external fan, adapting to dusty outdoor environments with large temperature differences. Equipped with pressure relief and oil level monitoring dual protection devices, it offers ample operational safety redundancy.
Purchase and Maintenance Tips
1.During the selection phase, confirm the project’s altitude and pollution level. If integration into a Box Type Substation or matching Combined Photovoltaic Substations is required, inform the technical team in advance to adjust the equipment’s external dimensions and wiring interfaces.
2.Routine maintenance only requires annual testing of the insulating oil withstand voltage and biennial retesting of the winding resistance. Promptly verifying the three-phase load balance when abnormal oil temperature rises can significantly extend the equipment’s service life.
FAQ
Q:Can this Oil Immersed Transformer be used for indoor basement power distribution?
A: The equipment uses insulating oil as the medium. For indoor enclosed spaces, a Dry Type Transformer is preferred. This product is also recommended for installation in outdoor independent substations and open-air photovoltaic fields. If indoor use is necessary, a separate oil drain and forced ventilation fire protection facilities are required.
Q:How long is the after-sales warranty period, and how can I obtain maintenance support for overseas purchases?
A: The standard warranty for the entire unit is three years, and the core copper winding is five years. Overseas orders come with a list of easily damaged spare parts. Remote guidance can be provided for troubleshooting in case of failure. For large projects, local electrical service providers can be coordinated for on-site repairs.
Q:Does the equipment support customized voltage parameters? Can it be supplied as a complete set with an Electric Power Converter?
A: High and low voltage output voltage and impedance parameters can be adjusted as needed. It can be supplied as a complete power distribution solution with a High and Low Voltage Switchgear and an Electric Power Converter, suitable for various photovoltaic and industrial power supply projects.
Q:What are the operational requirements for restarting the equipment after a long period of inactivity?
A: If the machine has been shut down for more than six months, the insulating oil quality and winding insulation resistance must be tested before it is put back into operation. The oil level must be checked to ensure it is within the standard range. After two hours of no-load test run without any abnormalities, all loads can be connected.
