low-cost

1. Product Introduction

The 35 kV series oil-immersed power transformer is a next-generation high-efficiency and energy-saving transformer that meets the latest Chinese energy efficiency standards. As a flagship mid-to-high-end energy-saving product for 35 kV voltage levels, it features high-permeability, low-loss silicon steel sheets, optimized magnetic circuit design, and a fully sealed, corrosion-resistant structure. With advantages such as reduced energy loss, lower noise levels, enhanced operational stability, and extended service life, this transformer is widely used in 35 kV power transmission and distribution systems. Ideally suited for power grid construction projects, energy-saving upgrades, industrial power supply, and renewable energy integration scenarios, it is the preferred solution for energy conservation and sustainable power generation.

2. Technical specifications (customizable)

Product Type: Oil-immersed Power Transformer Series 35 kV • Connection Group: YNd11, Dyn11 • Cooling Method: ONAN oil-immersed self-cooling • Rated Capacity: 50KVA-63000KVA • Impedance Voltage: 6.5%–8% (depends on capacity) • Insulation Class: Class A • Protective Structure: Fully sealed corrugated oil tank with plate-type radiator • Operating Environment: -30°C to +40°C

3. Key features

providing exceptional energy savings. Long-term operation significantly reduces electricity costs while ensuring a quick return on investment.

Ultra-low noise and environmental friendliness: The iron core uses multi-step joints and vibration damping technology, ensuring uniform magnetic circuit distribution and low operating noise, making it suitable for high-silence environments such as residential areas, schools, and hospitals.

Fully sealed structure with maintenance-free operation: the oil-free design with complete sealing isolates the transformer oil from the air, effectively preventing oxidation, moisture absorption, and leakage, thereby eliminating the need for core lifting and routine maintenance.

Excellent short-circuit resistance: the windings feature a high-strength structure with stable insulation and high mechanical strength, effectively resisting grid overvoltages, load fluctuations, and short-circuit faults.

Excellent heat dissipation efficiency with stable operation. The optimized heat dissipation structure ensures low temperature rise, enabling long-term full-load operation. The equipment demonstrates high reliability and a low failure rate.

Long service life and high adaptability: the oil tank has corrosion-resistant properties and weather resistance, and the overall design ensures a long service life. It can withstand various complex conditions, including open environments, high-altitude areas, humid conditions, dusty and coastal regions.

4. Application scenarios

• New construction, modernization, and energy-efficient upgrades of urban/rural 35 kV networks • Main power supply for large factories, mines, metallurgical plants, chemical enterprises, and industrial parks • Power supply enhancement solutions for wind farms, photovoltaic power stations, and energy storage stations • Power supply for hospitals, schools, commercial centers, high-end residential buildings, and office buildings • Infrastructure projects including water supply systems, railways, highways, municipal facilities, and airports • Power supply for main transformers in substations, container substations, and outdoor tower-mounted power distribution systems