Robust 35kV Class Distribution Transformer: High-Capacity Oil-Immersed Solutions from China Suppliers and Factory
Product Parameter
| Parameter | Specification |
| Rated Voltage | 35kV |
| Rated Capacity | 3150kVA – 31500kVA |
| Secondary Voltage | 6.3kV / 6.6kV / 10.5kV / 11kV |
| Frequency | 50Hz |
| Tap Range | ±5% or ±2×2.5% |
| Connection Group | Yd11 / YNd11 |
| Cooling Method | ONAN / ONAF |
| Insulation Class | Class F / H |
| Impedance Voltage | 7% – 10% |
| No-Load Loss | Optimized low-loss performance |
| Load Loss (75℃) | High-efficiency design |
| Short-Circuit Strength | Reinforced mechanical structure |
| Standards | IEC 60076 / GB1094 / GB/T6451 / GB20052 |
Product Applications
Utility Grid Expansion and Power Distribution Networks
The 35kV Class Distribution Transformer is widely used in utility grid expansion projects and regional substations. It efficiently steps down voltage from 35kV to medium voltage levels (6–11kV), supporting stable transmission across urban and rural networks. With capacities up to 31.5MVA, it helps utilities reduce energy losses by approximately 10%–15%, improving overall grid efficiency and reliability.
High-Load Industrial Facilities and Manufacturing Plants
This transformer is ideal for heavy-duty industrial applications such as steel plants, mining operations, and petrochemical industries. It is designed to operate continuously under high-load conditions and can handle short-term overloads of up to 120% capacity. Its strong short-circuit resistance ensures system stability, even during sudden load changes or fault conditions in demanding production environments.
Large Infrastructure and Renewable Energy Integration Projects
The transformer is extensively used in large infrastructure projects such as airports, railways, ports, and renewable energy systems like wind farms and solar power plants. It provides stable voltage output under fluctuating loads and environmental conditions. Designed to operate in temperatures ranging from -40°C to +45°C, it ensures reliable performance in outdoor and remote installations.
Product Advantages
High-Efficiency Core Design
Reduces no-load loss and improves overall energy performance
Reinforced Structural Framework
Enhances mechanical strength and resistance to transport impact
Superior Short-Circuit Resistance
Designed to withstand electrical and mechanical stresses
Low Noise Operation
Optimized structure minimizes vibration and acoustic levels
Wide Capacity Range
Supports up to 31.5MVA, suitable for large-scale power systems
Extended Service Life
Designed for over 30 years of reliable operation
Key Benefits
The 35kV Class Distribution Transformer is a reliable, high-capacity, and energy-efficient power distribution unit designed for modern medium-voltage networks. Its advanced engineering, strong durability, and low-loss performance make it suitable for utility grids, industrial facilities, and infrastructure projects.
With long operational life, stable performance, and compliance with international standards, it provides a dependable and cost-effective choice for demanding power distribution applications.
FAQ
What voltage levels can this transformer handle on the secondary side?
It typically supports secondary voltages such as 6.3kV, 6.6kV, 10.5kV, and 11kV depending on system requirements.
How does this transformer perform under overload conditions?
It can handle short-term overloads up to around 120% while maintaining operational stability.
What industries typically require 35kV transformers?
Industries such as utilities, mining, heavy manufacturing, and infrastructure projects commonly use this voltage class.
Can it operate in extreme environmental conditions?
Yes, it is designed to perform reliably in a wide temperature range and harsh outdoor environments.
What design features improve reliability?
Reinforced clamping structure, high-quality insulation materials, and optimized core design all contribute to enhanced reliability and durability.
What is the expected service life of this transformer?
The 35kV Class Distribution Transformer is engineered for durability, designed to provide over 30 years of reliable operation under standard maintenance.