Dry type transformer manufacturer

WEISHO, as a leading manufacturer of dry type transformers in the market, not only creates high-quality products with strict processes, but also provides the most competitive prices with its complete supply chain advantages. At the same time, we support OEM manufacturing and personalized customization services to help customers enhance their brand competitiveness and market value.

What are our characteristics

Production technology

Adopting industry-leading vacuum casting and VPI (Vacuum Pressure Impregnation) processes, continuously optimizing production processes, and improving efficiency and accuracy for reliable dry type transformer performance.

Customization and OEM/ODM

Supports OEM/ODM services and can provide customized solutions according to your needs, including rated capacity, voltage class, insulation class, cooling method, brand identification, etc.

High performance-price ratio

Efficient production and strong supply chain management ensure high-quality, fire-resistant, and low-maintenance dry type transformers at competitive prices, reducing customer procurement costs.

Long term partnership

Putting customers at the center, establishing long-term stable cooperation, and assisting in the growth of customer business by providing lifecycle support for dry type transformer projects.

Customizable dry-type transformer

Explore our extensive range of customized dry-type transformers, suitable for various distribution scenarios and professional applications. We provide comprehensive solutions from basic power distribution to high-performance temperature monitoring and intelligent management:

Efficient and energy-saving dry-type transformer

Intelligent monitoring of dry-type transformer equipment

Low noise dry-type transformer manufacturer

Industrial grade epoxy cast dry-type transformer

A brief introduction

WHY CHOOSE US

Industry-leading testing: Every dry-type transformer undergoes strict 100% international standard performance and safety testing, ensuring reliable operation in various environments.
High-quality materials: Premium insulation materials and corrosion-resistant components ensure a longer service life and stable performance for dry-type transformers.
Engineering Innovation: Our R&D team continuously optimizes VPI (Vacuum Pressure Impregnation) technology and thermal management to enhance transformer efficiency and safety.
Global certification: Our entire dry-type transformer series has obtained IEC, CE, UL, and regional safety certifications, meeting international market access requirements.
Comprehensive support: From load capacity selection guidance to on-site installation training and lifecycle after-sales service.

Why choose dry-type transformers?

Dry-type transformers are essential components in modern electrical systems, providing safe and efficient voltage conversion for indoor, urban, and high-fire-risk applications. They aim to deliver stable performance with minimal maintenance, ensuring safety and reliability. Here’s why dry-type transformers are the wise choice to meet your electrical needs.

Efficient Overload Protection

Dry-type transformers provide excellent protection against overload conditions, ensuring that your electrical systems remain safe from potential damage and thermal breakdown.

Advanced security features

Dry-type transformers are equipped with advanced safety features that help prevent electrical accidents and improve system reliability, especially in indoor and high-risk environments.

Versatile Applications

Dry-type transformers can be used in various environments and applications, making them a flexible choice for many electrical systems where fire safety and low maintenance are priorities.

Cost-Effective Solution

Investing in dry-type transformers can save a lot of maintenance and replacement costs because they have a longer lifespan and require minimal upkeep, eliminating the need for insulating oil management.

The advantages of our product

Excellent fire safety performance

Using solid epoxy resin insulation, no flammable oil medium, eliminating the risk of fire and explosion, suitable for indoor, high-rise buildings and densely populated areas.

Intelligent temperature monitoring

Compatible with intelligent monitoring systems, supporting real-time temperature tracking, over-temperature alarm and remote diagnosis, improving operational safety and efficiency.

Long insulation lifespan

Using high-quality insulating materials and VPI vacuum pressure impregnation technology, the insulation lifespan can reach over 20 years, far exceeding traditional oil-immersed transformers.

Low maintenance cost

No need for oil sampling, purification or replacement; simplified structural design reduces maintenance frequency and lowers long-term operation and maintenance costs.

High overload capacity

The thermal overload capacity can reach 125% of rated load, and the insulation system meets F/H class standards, adapting to fluctuating load conditions in power distribution networks.

Brand reputation

Through authoritative certifications such as ISO, IEC, CE, UL, etc., it has been widely used in the global market with guaranteed quality and after-sales support.

Get Your Customized Quotation!

We provide customized solutions. Tell us your needs for a precise quote.

Not just a dry-type transformer manufacturer

We not only produce dry-type transformers, but also offer a range of customized value-added services to meet your project needs. We are committed to pursuing excellence, ensuring that every customer receives personalized attention, expert guidance, and seamless support throughout the entire process of working with us.

Service Consultation

Whether your dry-type transformer requirements are for standard power distribution or complex renewable energy projects, our team can provide professional advice and technical consultation. For high-difficulty projects, we provide in-depth engineering support to ensure the selection of the best products and application solutions for you.

Product Recommendations

Not sure which dry-type transformer is suitable for your system? Our experts will provide free customized advice based on your specific load capacity, voltage class and environmental requirements, ensuring that you receive the product that best meets your electrical distribution needs.

Logistics & Shipping Support

If you lack a reliable freight forwarder, we can arrange transportation from the factory to the project site at no additional cost. Our logistics team ensures timely and safe delivery, ensuring that your project proceeds as planned and minimizing downtime and delays.

Installation Support

Our professional technical team provides on-site installation guidance and commissioning services for dry-type transformers, ensuring correct wiring, grounding and performance testing. We also offer operation and maintenance training to your team, ensuring long-term stable operation of your equipment.

What are our clients saying

Don't just believe what we say! Take a look at the satisfied customers' evaluations of dry-type transformers.

“The dry-type transformers have significantly improved the safety of our data center electrical installations, with no risk of oil leaks or fire hazards.”

John Doe

Electrical Engineer

“The thermal stability and low maintenance of these transformers are revolutionary. They are easy to integrate into our commercial building systems and very efficient.”

Tom Johnson

Building Facility Manager

“We trust these dry-type transformers for their durability and peace of mind. They’ve performed flawlessly in our factory’s high-load environment for over 5 years.”

James Brown

Plant Maintenance Supervisor

“We switched to dry-type transformers, and the reliability has been outstanding. Maintenance costs are down, and our urban power distribution network runs more smoothly.”

Maria Smith

Utilities Project Manager

WEISHO employs the most advanced production equipment and precise testing methods at all times, providing a solid guarantee for the company’s product manufacturing and quality inspection.

All products of the entire series have undergone strict environmental and electrical tests.

At the same time, the company has obtained ISO9001 quality management system and ISO14001 environmental management system certifications.

♥Wide selection
♥OEM Quality
♥100% Satisfaction Guarantee

Looking forward to working with you

Your trusted electrical equipment supplier

FAQ: Dry-type Transformers

Learn more about dry-type transformers through these frequently asked questions.

What is a dry-type transformer?

A dry-type transformer is an electrical device that transfers voltage and current between circuits using solid insulation materials (typically epoxy resin) instead of insulating oil. It is designed for indoor, urban, and high-fire-risk applications where oil-immersed transformers are not suitable.

How do dry-type transformers work?

They operate on the principle of electromagnetic induction, using primary and secondary coils wound around a core. The solid insulation system, often enhanced with VPI (Vacuum Pressure Impregnation) technology, ensures safe and efficient voltage conversion without the risk of oil leakage or combustion.

Why use dry-type transformers?

Fire safety: No flammable oil, eliminating fire and explosion risks.
Low maintenance: No oil sampling, purification, or replacement required.
Environmental friendliness: No risk of soil or water contamination from oil leaks.
Space efficiency: Compact design suitable for indoor installations in buildings and data centers.

What are the components of a dry-type transformer?

Core: Made of laminated silicon steel to minimize energy loss.
Windings: Copper or aluminum coils insulated with epoxy resin.
Insulation system: F/H class materials for high thermal stability.
Temperature monitoring: Built-in sensors and relays for over-temperature protection.
Enclosure: Optional IP-rated casing for dust and moisture protection.

How often should dry-type transformers be tested?

Routine inspection: Every 1–2 years, including visual checks, temperature readings, and insulation resistance tests.
Full diagnostic testing: Every 5–10 years, including winding resistance, turns ratio, and partial discharge measurements, to assess long-term performance.

Can dry-type transformers be used in residential applications?

Yes. They are ideal for residential buildings, apartments, and high-rise complexes where fire safety and indoor installation are priorities. They are commonly used in basement electrical rooms and rooftop substations.

What maintenance do dry-type transformers require?

Keep the surrounding area clean and free of dust to ensure proper cooling.
Inspect connections and terminals for tightness and corrosion annually.
Verify the functionality of temperature sensors and alarms regularly.
No oil-related maintenance is needed, significantly reducing long-term costs.

Are dry-type transformers environmentally friendly?

Yes. They contain no hazardous insulating oil, so there is no risk of environmental contamination. Their high efficiency also reduces energy consumption and carbon emissions over their lifespan.

What sizes do dry-type transformers come in?

They are available in a wide range of capacities, from 5 kVA for small commercial applications up to 20 MVA for large industrial and power distribution projects. Custom designs can also be engineered for specific voltage and load requirements.

Do dry-type transformers have a warranty?

Yes. Our dry-type transformers typically come with a 2–5 year manufacturer’s warranty covering defects in materials and workmanship. Extended warranties and service contracts are also available for long-term peace of mind.