Dual Voltage Epoxy Resin Cast Dry-Type Transformer | 10kV / 20kV Flexible Power Solution

This epoxy resin cast dry-type distribution transformer is designed for flexible operation in dual voltage systems, supporting both 10kV and 20kV grid connections. Through an advanced winding conversion mechanism, the high-voltage coils of each phase can be switched between series and parallel configurations, enabling voltage conversion while maintaining a stable output voltage.

This innovative design allows a single transformer to operate in either a 10kV or 20kV network (non-simultaneously), significantly reducing the need for duplicate equipment investment. It provides a cost-effective and efficient solution for projects requiring voltage adaptability, such as industrial facilities, infrastructure upgrades, and power distribution systems with evolving grid requirements.

The transformer features stable performance, reliable switching operation, and compact structure, making it ideal for modern power systems that demand flexibility, safety, and long-term operational efficiency.

Standards Compliance

This dry-type transformer is manufactured in accordance with internationally recognized standards to ensure safety and performance:

IEC 60076-11: Power transformers – Part 11: Dry-type transformers
IEC 60529: Degrees of protection provided by enclosures (IP Code)

Key Features and Benefits

The dual voltage design enables fast and convenient switching between 10kV and 20kV systems, reducing infrastructure redundancy and optimizing capital investment. This flexibility is particularly valuable for grid upgrades, temporary power solutions, and multi-voltage environments.

With a low-loss core design, the transformer ensures high energy efficiency and reduced operating costs. Its epoxy resin cast coils provide excellent insulation performance, with resistance to moisture, dust, and environmental contaminants, ensuring long-term reliability.

The transformer is inherently safe, featuring flame-retardant, explosion-proof, and non-polluting characteristics. Its maintenance-free design reduces lifecycle costs and simplifies installation, especially in load centers and indoor environments.

Low partial discharge levels and strong mechanical strength enhance operational stability, while excellent short-circuit resistance and lightning impulse withstand capability ensure reliable performance under harsh electrical conditions.

Optional intelligent temperature monitoring and display systems are available to provide real-time thermal management, improving safety and operational visibility.

Normal Service Conditions

This transformer is designed to operate under the following standard environmental conditions:

Installation altitude: Not exceeding 1000 meters above sea level
Maximum ambient temperature: +40°C
Maximum daily average temperature: +20°C
Minimum ambient temperature: -25°C

Dry-Type Transformer FAQ

What certifications do your transformers have?
Our transformers are certified with CE, ISO, and comprehensive type test reports in accordance with international standards.

What capacity range do you offer?
We provide transformers ranging from 50 kVA to 20,000 kVA, with full customization options based on voltage levels and project specifications.

What is the warranty period?
A standard 12-month warranty is provided to ensure product quality and performance reliability.

What is the delivery time?
Production typically takes 15–25 days after receipt of advance payment. Shipping time varies depending on the destination and logistics arrangements.

Which markets do you serve?
We export to more than 60 countries worldwide, including Southeast Asia, the Middle East, South America, Africa, and the Americas, supporting a wide range of power distribution projects.

Applications

This dual voltage epoxy resin cast dry-type transformer is widely used in industrial plants, commercial buildings, substations, renewable energy systems, infrastructure projects, and urban power distribution networks where voltage flexibility and operational reliability are essential.