The 35kV oil-immersed power transformer is widely deployed in medium- and high-voltage distribution systems where reliable power conversion is critical. In utility substations, it supports regional transmission and distribution networks by ensuring stable voltage transformation and continuous power delivery. Industrial facilities such as steel mills, mining operations, petrochemical plants, cement factories, and manufacturing complexes rely on its robust performance to supply large electrical loads.

The transformer is also extensively used in renewable energy projects, including photovoltaic power stations, wind farms, and battery energy storage systems, where efficient integration with the electrical grid is essential. In commercial and public infrastructure, it provides dependable power for airports, railway stations, hospitals, large shopping centers, data centers, ports, water treatment facilities, and municipal engineering projects that demand uninterrupted electrical service.

Why Choose Our Factory?

With years of experience in transformer manufacturing, our factory combines advanced production equipment with strict quality management to deliver products that meet international performance standards. Automated core cutting, CNC winding machines, vacuum oil filling systems, and precision testing equipment ensure consistent manufacturing quality from raw materials to finished products.

Our engineering team supports complete OEM and ODM projects, providing customized electrical designs, technical consultation, multilingual documentation, private labeling, and export-ready packaging. Every transformer is carefully inspected before shipment, enabling customers to receive reliable products with stable performance and long operational life.

FAQ

Q1. What capacity range is available for the 35kV oil-immersed transformer?

We manufacture standard capacities from 315kVA to 31.5MVA. Larger capacities and customized designs are also available based on project requirements and local utility standards.

Q2. Can the transformer be customized for different national grid standards?

Yes. Primary voltage, secondary voltage, frequency, vector group, impedance, tap changer configuration, cooling method, and accessories can all be customized to comply with IEC, ANSI, IEEE, GB, or other applicable standards.

Q3. What cooling methods are available?

Standard models use ONAN (Oil Natural Air Natural) cooling. For higher-capacity transformers, ONAF (Oil Natural Air Forced) cooling with fan-assisted heat dissipation is available to improve load capability.

Q4. Is the transformer suitable for outdoor substations?

Yes. The transformer features a durable weather-resistant steel tank with anti-corrosion coating, making it suitable for outdoor substations, industrial facilities, renewable energy projects, and utility distribution networks.

Q5. What inspections are completed before delivery?

Each transformer undergoes a complete series of routine tests, including winding resistance measurement, transformation ratio verification, insulation resistance testing, dielectric withstand testing, no-load and load loss measurement, oil dielectric strength analysis, leak testing, and final quality inspection to ensure compliance with customer specifications.