Energy Transformer is a global manufacturer and factory supplier of high quality dry type transformers, serving power distribution needs in commercial, industrial, and renewable energy applications. We provide a wide range of dry type transformers from 50 kVA to 5000 kVA, with voltage levels from 400 V to 35 kV, optimized for indoor and outdoor use in environments requiring high fire safety, moisture resistance, and low maintenance.
Our products include cast resin transformers (CRT) and vacuum pressure impregnated (VPI) transformers, all produced in our advanced factory under strict IEC, CE, UL, and GOST certification systems. Every dry transformer is tested for performance, safety, and durability, ensuring reliable operation across global markets.
We supply OEM and custom dry type transformers to clients in over 60 countries, including the USA, Canada, Germany, France, UK, South America, Middle East, Southeast Asia, and Africa. With factory-direct wholesale pricing, flexible designs, and fast delivery, Energy Transformer is your trusted partner for global dry transformer supply.
📌 Dry Type Transformer Range: 50 kVA – 5000 kVA
📌 Voltage Levels: 400 V – 35 kV
📌 Certifications: UL, CE, GOST, IEC
📌 Factory Services: OEM, ODM, custom voltage/enclosure
📌 Markets Served: USA, Canada, Europe, Asia, Middle East, South America, Africa
📌 Applications: data centers, hospitals, real estate, tunnels, solar & wind
Dry Type Transformers for Safe, Efficient, and Indoor Power Distribution
Dry type transformers are essential components for modern electrical systems, providing a safer, more environmentally friendly alternative to traditional oil-filled units. With solid insulation and natural air cooling, these transformers eliminate the risk of fire and fluid leaks, making them ideal for a wide range of indoor and sensitive applications. Our dry type transformers are meticulously engineered for superior performance, reliability, and safety, ensuring seamless power distribution in mission-critical environments.
We offer a comprehensive range of solutions, from standard models to custom-engineered units, all designed to meet the most stringent international standards. Contact us today to learn how our dry type transformers can power your next project.
What Are Dry Type Transformers?
Dry type transformers are defined by their use of solid or gaseous insulation media rather than flammable liquid insulators like oil. The core and coil assembly are encased in a protective enclosure and cooled by air, which circulates naturally or is forced through the unit. This fundamental design offers significant advantages in safety, environmental impact, and maintenance.
Key Advantages:
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Safety: The absence of oil means no risk of fire or explosion, which is crucial for indoor installations in populated areas.
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Environmental Friendliness: With no oil to leak or dispose of, these transformers are a highly sustainable choice.
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Low Maintenance: Dry type transformers require minimal maintenance compared to their liquid-filled counterparts, reducing operational costs and downtime.
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Ease of Installation: Their compact size and lightweight design simplify installation and integration into existing systems.
Our Product Portfolio: Types & Features
We provide a diverse selection of dry type transformers, each tailored for specific operational environments and performance requirements.
Cast Resin Dry Type (CRDT) Transformers
Also known as cast resin transformers, these units feature coils and windings completely encapsulated in a durable epoxy resin under a vacuum. This process creates a dense, non-porous structure that is highly resistant to moisture, dust, and corrosive elements.
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Ideal for: Harsh environments, coastal areas, chemical plants, and high-humidity locations.
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Key Features: Excellent short-circuit withstand capability and high dielectric strength.
Vacuum Pressure Impregnated (VPI) Transformers
VPI transformers are constructed by impregnating the coil windings with a polyester varnish or resin in a vacuum chamber, followed by a pressure cycle. This process ensures deep penetration and a void-free finish, resulting in a robust, high-performance transformer.
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Ideal for: General industrial and commercial applications, manufacturing facilities, and buildings.
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Key Features: High mechanical strength, superior overload capacity, and a longer lifespan.
Encapsulated Dry Type Transformers
Typically used for smaller power requirements, these transformers have their windings encapsulated in a compound, offering protection against contaminants and moisture. They are often found in commercial buildings and control panels where space is limited.
Custom Engineered Dry Type Transformers
Our expertise lies in creating bespoke custom dry type transformers to meet unique project specifications. We can design and manufacture units with specific voltage levels, winding configurations, cooling methods, and physical dimensions to fit any application.
Applications Across Diverse Industries
The inherent safety and reliability of our dry type transformers make them the preferred choice for a wide array of industries and environments.
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Data Centers & Server Rooms: The fire-resistant nature of these transformers is non-negotiable in environments housing critical IT infrastructure.
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Hospitals & Healthcare Facilities: They ensure reliable power for life-saving equipment, while their low noise operation minimizes disruption.
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Commercial & Residential Buildings: Ideal for indoor power distribution in high-traffic public spaces, from shopping malls to high-rise residential buildings.
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Transportation Infrastructure: Used in subway systems, airports, and railway stations where safety and reliability are paramount.
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Renewable Energy: Integral to wind and solar power generation, connecting inverters to the grid with maximum efficiency.
Technical Specifications & Selection Guide
To help you select the perfect transformer for your needs, we offer a wide range of technical options and specifications.
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Voltage Range: We provide medium voltage dry transformers and low voltage units to suit various grid connections.
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Capacity (kVA): Our offerings range from a few kVA for small applications up to several MVA for large-scale projects.
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Efficiency: We design transformers to meet or exceed international efficiency standards, including DOE (US) and EU Ecodesign, ensuring energy-efficient dry transformers that reduce operating costs.
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Enclosure Rating: Available with various enclosure protection levels, such as IP20 and IP23, to guard against environmental factors.
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Insulation & Temperature Class: Our transformers are built with high-quality insulation to withstand demanding thermal conditions and ensure longevity.
Common Dry Type Transformer Specifications
Below is a table outlining some of our standard dry type transformer specifications. Please note that these are for reference, and we can fully customize parameters to meet your exact requirements.
| Capacity (kVA) | Primary Voltage | Secondary Voltage | Insulation Class | Cooling Method | Enclosure Rating |
|---|---|---|---|---|---|
| 100 kVA | 11kV | 400V/230V | F (155°C) | AN (Air Natural) | IP20 |
| 500 kVA | 15kV | 480V/277V | H (180°C) | AN/AF (Air Forced) | IP23 |
| 1000 kVA | 22kV | 690V | H (180°C) | AN/AF (Air Forced) | IP23 |
| 1500 kVA | 33kV | 415V/240V | H (180°C) | AF (Air Forced) | IP23 |
| 2500 kVA | 34.5kV | 400V/230V | F (155°C) | AF (Air Forced) | IP23 |
Why Choose Our Dry Type Transformers?
Choosing us means partnering with a trusted and experienced dry type transformer manufacturer dedicated to quality and customer satisfaction.
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Global Compliance: Our transformers are certified to major international standards, including UL, CSA, CE, and IEC, ensuring they are ready for global markets.
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Factory-Direct Advantage: As a direct manufacturer, we offer competitive pricing, streamlined communication, and a clear path from design to delivery.
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Expert Customization: Our engineering team works closely with you to design a transformer that precisely fits your technical and spatial requirements.
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Unrivaled Support: We provide comprehensive technical consultation, timely logistics, and dedicated after-sales support to guarantee a smooth experience from order to installation and beyond.
FAQs about Dry Type Transformers
Q: What is the main difference between a dry type and an oil-filled transformer? A: The primary difference is the cooling and insulation medium. Dry type transformers use air or solid insulation, eliminating the flammable oil used in liquid-filled transformers. This makes dry type units safer for indoor use and requires less maintenance, as there is no fluid to monitor or manage.
Q: Are dry type transformers more expensive than oil-filled transformers? A: Initial costs for dry type transformers can sometimes be higher, but this is often offset by lower installation costs (no fire suppression systems needed) and significantly reduced maintenance and operational costs over the transformer's lifespan.
Q: How is the sound level of a dry type transformer managed? A: Our dry type transformers are designed with low-noise operation in mind, using high-quality core materials and sound-dampening enclosures. We can also provide sound level test reports and offer custom designs to meet specific noise reduction requirements for sensitive applications like hospitals or residential areas.
Request a Quote or Technical Consultation
Ready to enhance the safety and efficiency of your electrical system? Our team of experts is on hand to assist you with technical specifications, project planning, and fast, accurate quotes.
Contact us today to discuss your project needs and get a customized solution.