Three Phase Dry Type Transformer

Transpower Electrical Equipment Co., Ltd. is one of the most reliable manufacturers and suppliers of three phase dry type transformer in China. Welcome to buy high quality customized products at competitive price from our factory. Contact us for quotation.

Three Phase Dry Type Transformers are designed for safe, efficient, and reliable medium voltage power distribution in industrial, commercial, and infrastructure applications. Compared with oil immersed transformers, dry type transformers use solid insulation systems without transformer oil, reducing leakage risks and improving fire safety for installations where environmental protection, safety, and low maintenance are critical.

Our medium voltage cast resin dry type transformers are manufactured for industrial facilities, renewable energy systems, commercial buildings, data centers, and infrastructure projects. With optimized CRGO core design, high-quality insulation materials, precision winding technology, and strict quality control procedures, these transformers provide stable voltage conversion, reliable operation, and long service life.

Customized transformer solutions are available based on rated capacity, voltage level, frequency, installation environment, protection requirements, and project specifications.

High Safety and Reliable Insulation Performance
The transformer adopts epoxy resin cast insulation technology to provide excellent resistance against moisture, dust, and environmental changes. The oil-free design eliminates transformer oil leakage risks and reduces fire hazards, making it suitable for indoor substations, hospitals, factories, data centers, and other safety-sensitive locations.

Energy-Efficient Design with Low Operating Losses
High-quality grain-oriented silicon steel (CRGO) cores improve magnetic performance and reduce no-load losses. Optimized winding structures help control load losses, temperature rise, and operating energy consumption.
Lower transformer losses help customers reduce long-term operating costs, especially in continuous industrial power distribution systems.

Strong Mechanical Strength and Environmental Adaptability
Precision winding technology and reinforced insulation structures improve mechanical strength and short-circuit withstand capability. Transformers can be designed for demanding operating conditions, including high humidity environments, industrial pollution areas, high-altitude locations, and applications requiring enhanced protection.

Flexible OEM & Project Customization
We provide customized dry type transformer solutions for distributors, EPC contractors, and industrial projects, including:
Rated capacity customization
Primary and secondary voltage configuration
50Hz / 60Hz frequency options
Vector group selection (Dyn11, Yyn0, etc.)
Impedance and insulation level customization
Enclosure protection customization
Climate and environmental adaptation designs

Technical parameters including impedance, temperature rise, insulation level, vector group, and partial discharge requirements can be customized according to engineering project specifications.

Each transformer is manufactured through controlled production procedures to ensure consistent electrical performance and long-term reliability.

Manufacturing Process

Raw Material Inspection
CRGO steel, winding conductors, and insulation materials are inspected before production to ensure material quality.

Precision Core and Winding Manufacturing
Advanced cutting equipment and precision winding technology are used to achieve accurate core assembly and stable electrical performance.

Vacuum Resin Casting Process
Epoxy resin casting technology is applied to ensure reliable insulation performance and reduce internal voids within the insulation system.

Assembly and Electrical Verification
Mechanical assembly and electrical parameter checks are completed according to technical specifications.

Final Quality Assurance
Complete factory inspection and testing are performed before shipment.

Factory Testing Includes
Winding resistance testing
Voltage ratio and phase displacement testing
Insulation resistance testing
No-load loss and load loss testing
Separate-source and induced AC withstand testing
Temperature rise verification
Partial discharge testing (available according to requirements)

Factory test reports (FAT) and inspection documents can be provided for project approval and customer verification.

Our manufacturing facilities are equipped with transformer production equipment, winding systems, resin casting systems, electrical testing equipment, and inspection facilities to support customized production and bulk supply requirements.

We provide technical support for:
Transformer selection and engineering evaluation
Technical data sheet preparation
Drawing approval support
Project documentation
Installation and commissioning assistance

Technical documents can be provided according to project requirements, including:

Three phase dry type transformers are widely used in:

Transformer manufacturing workshop

Resin casting production process

Electrical testing laboratory

Finished transformers ready for shipment

Installed transformer project photos

Reliable Safety Design
Oil-free dry type transformer structure reduces leakage risks and improves fire safety.

Energy-Efficient Performance
Optimized core and winding design helps reduce operating losses and total ownership costs.

Engineering Customization
Flexible solutions support distributors, EPC contractors, and project-specific requirements.

Quality Traceability
Testing reports and technical documents provide verification throughout the supply process.

Global Project Support
Professional technical assistance helps customers complete installation and commissioning smoothly.

Hot Tags: three phase dry type transformer, China three phase dry type transformer manufacturers, suppliers, factory