high voltage transformer

1. Product Introduction:

The 35 kV series oil-immersed transformer is a classic high-voltage switchgear product developed in China using traditional, high-quality manufacturing processes. Equipped with premium cold-rolled silicon sheets, highly conductive oxygen-free copper conductors, and advanced core structures, this product exhibits outstanding advantages in the 35 kV voltage range, including mature technology, stable operation, and an excellent cost-performance ratio.

This product reliably converts and distributes electrical power in the 35 kV to 10 kV/0.4 kV range and is widely used in regional main power grids, industrial and mining facilities, and large-scale infrastructure projects. It serves as standard distribution equipment, balancing reliability and cost efficiency.

2. Technical characteristics (customizable)

Energy Efficiency Class: High-efficiency and energy-saving transformer • Connection group: Commonly used Dyn11 • Cooling method: ONAN (oil self-cooling) Loss and performance parameters • Capacity range: 50KVA-63000KVA • Impedance voltage: 4% or 6.3% (adjustable by capacity) • Insulation class: Class A • Noise level: ≤65dB (slightly fluctuates with capacity) • Working temperature: Upper oil temperature rise ≤55K, the maximum upper oil temperature does not exceed 95°C Environmental protection • Working environment: -30°C to +40°C, adaptable to high humidity and dust outdoors • Protective structure: Sealed oil tank with anti-corrosion coating

3. Key Features

1. Mature technologies and universal compatibility, combining standardized manufacturing processes and high component compatibility. With an extremely low equipment failure rate, it represents one of the lowest-risk options for building and upgrading 35 kV power grids, meeting the diverse requirements of traditional power sources.

Stable operation with reliable shock resistance: The iron core utilizes a multi-stage lamination process to evenly distribute the magnetic circuits; the coil utilizes high-strength conductors combined with a longitudinal oil structure to ensure high mechanical strength. It exhibits excellent resistance to sudden short circuits, effectively addressing challenging operating conditions such as line voltage fluctuations and load surges, thereby ensuring long-term stable operation.

Sealed design with convenient maintenance: A sealed corrugated oil tank or oil storage cabinet effectively prevents oxidation, moisture absorption, and leakage of the insulating oil. Routine maintenance is simple and requires only periodic oil level and temperature checks, eliminating frequent core lift repairs, significantly reducing operating and maintenance costs throughout the entire lifecycle.

Wide adaptability and excellent weather resistance: the fuel tank is coated with anti-corrosion paint, providing a robust overall structure capable of withstanding harsh outdoor conditions, such as strong sunlight, humidity, and significant temperature fluctuations. It ensures safe and stable operation in both high-altitude regions and humid coastal areas.

4. Application scenarios

1. Regional Power Grid Backbone Adaptation: Designed for 35kV district-level power grids and township power backbones, this key equipment connects regional power sources to end-user loads, ensuring reliable and stable regional power supply.

Industrial and mining enterprises, along with large industrial parks, provide the primary power supply for large factories, mines, metallurgical plants, chemical parks, and industrial bases. This infrastructure supports the startup and long-term stable operation of high-power equipment, serving as the basis for industrial electricity demand.

Large infrastructure and public buildings, including highway service areas, railway stations, water conservation centres, major shopping centres and university campuses, rely on our high-voltage conversion solutions to provide safe and reliable power.

Rural Power Grid Modernization and Remote Area Power Supply: In rural power grid modernization and remote area power supply projects, these models have become the preferred choice due to their high cost-effectiveness and easy maintenance, which effectively improves the quality and coverage of rural power supply.