control transformer

1. Product Introduction

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

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

2. Technical specifications (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 capacity characteristics) • Insulation class: Class A • Noise level: ≤65 dB (depends on capacity) • Operating 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 operation with high short-circuit resistance: the core uses high-quality silicon steel sheets and optimized lamination processes, ensuring a robust coil structure with high mechanical strength. It can withstand power grid surges and load fluctuations, providing high operational safety.

Low noise and environmentally friendly magnetic circuit design optimization result in reduced 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 completely sealed corrugated oil tank effectively prevents oil oxidation and moisture absorption, eliminating the need for core lifting or oil replacement while maintaining extremely low long-term maintenance costs.

Long service life and high reliability: high-quality insulation materials combined with precision manufacturing processes allow the equipment to serve 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 size and moderate weight, suitable for various installation environments such as outdoor platforms, distribution rooms, and box-type substations. It has excellent weather resistance and is suitable for complex outdoor operating conditions.

4. Application scenarios

• New construction and upgrading of urban and rural power grids are applicable to 35 kV county-level networks and township grid upgrades, providing reliable medium and high voltage power conversion.

• Industrial and mining enterprises, as well as industrial parks, receive primary power supply and distribution services from these facilities, offering high stability and the ability to meet continuous electricity demands under heavy loads.

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

• Commercial and public buildings are suitable for large shopping malls, 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 regions due to its high cost-effectiveness and ease of maintenance.