Three Phase Distribution Transformer

Zhejiang Jiangshan Hengli Electrical Co., Ltd. is one of the leading manufacturers and suppliers of three phase distribution transformer in China. If you're going to wholesale durable three phase distribution transformer made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.

The 630kVA oil-immersed distribution transformer is a high-performance power solution specifically designed for medium to large-scale power distribution systems. The rated power of the transformer is 630kVA. the primary voltage of the transformer is 11KV and secondary voltage is 0.415 KV. This model is widely used in industrial zones, commercial complexes, and urban power distribution networks where stable voltage conversion and continuous operation are critical. By utilizing advanced materials and optimized structural design, this transformer delivers low loss, low noise, and excellent durability over long-term service.

As a professional three phase distribution transformer manufacturer with a fully integrated production line, we supply reliable, energy-efficient transformers directly from our factory, ensuring competitive pricing and fast delivery.Our power and distribution transformers are engineered with advanced technology and built using high-quality materials and components, ensuring dependable performance and extended service life.

The 630kVA three phase distribution transformer is widely used in:

High-Efficiency Magnetic Core

The core is manufactured using high-grade CRGO silicon steel laminations with step-lap construction. This significantly reduces hysteresis loss and eddy current loss, improving overall transformer efficiency while minimizing noise levels.

Optimized Winding Structure

The windings are produced using high-conductivity copper or aluminum conductors. The low-voltage winding adopts foil structure, while the high-voltage winding uses multi-layer cylindrical design. This configuration ensures uniform electromagnetic distribution and enhances short-circuit resistance.

Reliable Insulation System

A robust oil-paper insulation system ensures high dielectric strength and stable performance under fluctuating load conditions. The insulating oil also serves as a cooling medium, maintaining optimal operating temperature.

Sealed Tank Design

The transformer features a hermetically sealed corrugated tank that eliminates contact with air. This prevents oil oxidation and moisture ingress, significantly extending the service life and reducing maintenance requirements.

Customization Capabilities

 

We provide flexible OEM/ODM services tailored to project requirements:

● Voltage ratio customization (6kV–35kV)

● Special coatings for coastal or corrosive environments

● Intelligent monitoring systems (optional)

● Compact or reinforced structural designs

Testing & Quality Assurance

 

Each three phase distribution transformer undergoes strict testing procedures before shipment:

● Winding resistance measurement

● Voltage ratio and vector group test

● No-load and load loss testing

● Insulation resistance and withstand voltage test

● Temperature rise test (optional)

All products comply with IEC 60076, other major international standards

As a direct distribution transformer factory, we control every stage of production, including raw material sourcing, core processing, coil winding, vacuum drying, oil filling, and final assembly.

Our facility is equipped with:

• CNC core cutting machines
• Automatic winding systems
• Vacuum oil treatment equipment
• Advanced testing laboratories

This ensures consistent quality and reliable performance for every unit delivered.

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