Oil immersed transformers use insulating oil as the cooling medium, and the iron core and winding are immersed in a sealed oil tank to dissipate heat through oil circulation. Its voltage level covers a wide range, from distribution to ultra-high voltage, with strong overload capacity and stable insulation performance. The corrugated fuel tank design enhances heat dissipation efficiency and is equipped with protective devices such as gas relays, ensuring high safety. Suitable for scenarios such as power grid substations and industrial distribution.
| Capacity (KVA) | High Voltage (KV) | HV Tapping % | Low Voltage (KV) | Vector Group | No Load Loss (W) | Load Loss 75℃ (W) | Impedance (%) |
|---|---|---|---|---|---|---|---|
| 100 | 6 / 10 / 10.5 / 33 | ±2×2.5% | 0.4 | Dyn11 | 75 | 1500 | 4 |
| 160 | 0.4 | Dyn11 | 100 | 2200 | 4 | ||
| 250 | 0.4 | Dyn11 | 140 | 3050 | 4 | ||
| 400 | 0.4 | Dyn11 | 200 | 4300 | 4 | ||
| 630 | 0.4 | Dyn11 | 320 | 6200 | 4.5 | ||
| 1000 | 0.4 | Dyn11 | 450 | 10300 | 4.5 | ||
| 2500 | 0.4 | Dyn11 | 900 | 20200 | 5 |
Using insulating oil as the cooling medium, the heat generated by the iron core and winding is quickly removed through natural convection or forced circulation. The structural design of corrugated fuel tanks significantly increases the heat dissipation area.
Capable of handling power distribution from 10kV to 1000kV ultra-high voltage transmission. Its insulation oil system can effectively withstand high electric field strength for large industrial scenarios.





Our solutions include high-brightness, energy-saving street lights with environmental protection and easy installation. Featuring a waterproof rating of IP67 and CE certification, these are suitable for schools, parks, roads, and factories.
A: Yes, we provide professional manufacturing based on specific customer needs and technical drawings.
A: Yes, we offer full OEM/ODM services where your logo and specific designs can be applied to the products.
A: Oil-immersed transformers generally handle much larger capacities and higher voltage levels, making them ideal for ultra-high voltage transmission and large industrial applications.
A: They are equipped with gas relays, pressure relief valves, and other real-time monitoring devices to trigger alarms or cut power during internal faults.
A: Standard stock items are typically shipped within 7 days, with general delivery completed within 15 days.
A: Our products are manufactured under strict quality standards and carry certifications such as ISO9001 and CCC.