Energy-saving three-phase oil-immersed transformer
Advantages10 kV Oil-Immersed Transformers
1. More energy: long-term operating electricity costs are lower
2. More durable: fully sealed corrugated fuel tank, oil does not oxidize, and there is no suspended core.
3. More stable: strong short-circuit resistance, adapts to power grid fluctuations, low failure rate
4. Quieter: less noise, suitable for noise-sensitive scenes such as residential areas and schools
5. Cost-effective: lower production cost, suitable for traditional distribution network selection
1. Product Overview
10kV series oil-immersed distribution transformer. As a core energy-saving solution for urban and rural power grids, industrial sites, and public buildings, it features a fully sealed structure with high-quality cold-rolled silicon steel sheets and highly conductive oxygen-free copper conductors. This configuration ensures minimal energy loss, low noise, exceptional reliability, and maintenance-free operation. The transformer reliably converts 10kV voltage to 0.4kV, meeting the demands for long-term, continuous, safe, and efficient power supply.
2. Main technical specifications (customizable)
• Energy efficiency class: high-efficiency and energy-saving transformer
• Connection group: Dyn11
• Cooling method: ONAN oil-immersed self-cooling
• Power range: 10KVA-5000KVA
• Operating temperature: -25°C to +40°C
• Protection type: fully sealed with corrugated oil structure
3. Key features
Long-term operation can significantly reduce energy consumption and lower electricity costs.
Fully sealed and maintenance-free design with a corrugated oil tank and fully sealed structure that isolates the transformer oil from the air, preventing oxidation and moisture. This eliminates the need for core lifting or oil replacement, significantly reducing maintenance workload.
The coil features a robust construction and high mechanical strength, as well as short-circuit resistance. It ensures stable operation and adapts to grid fluctuations and load variations.
The low-noise and low-loss core uses high-quality materials with high permeability and optimized lamination methods to effectively reduce no-load losses and operational noise, making it ideal for environments requiring quiet operation.
It features a long service life and high reliability, a stable insulation system, a rational heat dissipation system, resistance to high temperatures, resistance to aging, and a low overall operational failure rate.
Compact in size and easy to install, with an optimized structural design, small external dimensions, and moderate weight, it is suitable for various installation conditions such as indoor distribution rooms and outdoor box-type substations.
Application Scenarios
New construction and modernization of urban and rural power grids suitable for 10 kV distribution systems in urban residential areas, streets, and rural power grids, serving as the main equipment for energy-saving upgrades.
Industrial parks provide stable power supply and lighting for factories, mines, machinery processing plants, chemical enterprises, and building materials companies.
Commercial and public buildings are used for power distribution in places such as shopping malls, office buildings, hotels, schools, hospitals, and government office buildings.
Infrastructure facilities are suitable for power supply for road lighting, water conservancy stations, pumping stations, railway transportation, communication base stations, etc.
Box-type substations and prefabricated substations can serve as the main components of box-type substations, which are widely used in centralized power supply sources such as construction sites, industrial parks, and residential areas.


