control transformer

1. Product introduction

The 35 kV oil-immersed distribution transformer series is an energy-efficient replacement product, demonstrating significant reductions in losses both under no-load and on-load conditions. The product features high-quality cold-rolled silicon core sheets, highly conductive oxygen-free copper windings, and a fully sealed design, ensuring mature overall technology and stable operation.

This model is designed for 35 kV distribution networks at all voltage levels, ensuring stable power conversion between 35 kV and 10 kV/0.4 kV. With low losses, low noise, high reliability, and a long service life, it is the preferred equipment for grid modernization in urban and rural areas, power supply for industrial and mining facilities, and for large-scale infrastructure supporting energy systems.

2. Technical characteristics (customizable)

• Energy efficiency class: High efficiency and energy saving transformer • Connection group: Dyn11 • Cooling method: ONAN (oil immersed self-cooling) • Rated capacity: 50KVA-63000KVA • Impedance voltage: 4% or 6.3% (depending on the capacity characteristics) • Insulation class: Class A • Noise level: ≤65dB (depending on the capacity) • Working environment: -30°C to +40°C, suitable for high humidity and dusty outdoor conditions • Protective structure: Fully sealed corrugated oil tank

3. Key Features

Stable performance with high short-circuit resistance: The core uses high-quality silicon steel sheets and optimized lamination processes, resulting in a robust coil structure with high mechanical strength. It is able to withstand power surges and load fluctuations, ensuring high operational safety.

Low noise and environmentally friendly optimization of magnetic circuit design result in lower operating noise compared to traditional models, making them suitable for noise-sensitive environments such as residential areas, schools and hospitals.

Fully sealed and maintenance-free design with a fully sealed corrugated oil tank design effectively prevents oil oxidation and moisture absorption, eliminating the need for core lifting or oil changes, while keeping long-term maintenance costs extremely low.

Long service life and high reliability: High-quality insulation materials combined with precise manufacturing processes enable the equipment to last for over 20 years with a low overall failure rate, making it suitable for long-term continuous power supply scenarios.

Easy installation and excellent flexibility, compact dimensions, and moderate weight make it suitable for a variety of installation environments, such as outdoor platforms, distribution rooms, and box-type substations. It boasts excellent weather resistance and is suitable for challenging outdoor environments.

4. Application scenarios

• New construction and modernization of urban and rural power grids are applicable to 35 kV grids at the district level and modernization of village grids, ensuring reliable transformation of medium and high voltage power.

• Industrial and mining facilities, as well as industrial parks, receive primary power supply and distribution services from these facilities, which are highly stable and capable of meeting continuous power needs under heavy loads.

• Large-scale infrastructure is used to support power supply in highway areas, railway stations, water conservation areas, university cities and cultural tourism projects.

• Commercial and public buildings are suitable for large shopping centers, office buildings, hospitals, hotels and other facilities with high requirements for power supply reliability.

• Rural power grids and remote areas widely use this technology for construction and power supply systems in rural and isolated areas due to its high cost effectiveness and ease of maintenance.