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This section provides an overview for dry type transformers as well as their applications and principles. Also, please take a look at the list of 16 dry type transformer manufacturers and their company rankings. Here are the top-ranked dry type transformer companies as of December, 2024: 1.AFP Transformers Corp., 2.Electro-Mechanical, LLC, 3.ELSCO Transformers.
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Engaged in research on nitride semiconductor growth using the MBE method at Waseda University Graduate School. After graduating from graduate school in 2016, he joined a non-ferrous metal manufacturer.
Engaged in equipment maintenance and engineering work at metal smelting plants. Moved to a chemical manufacturer in 2022. Engaging in similar tasks.
Dry-type transformers are transformers that do not use insulating oil for cooling. Instead, they rely on air circulation around resin-coated coils for heat dissipation. This design offers several advantages, such as eliminating the risk of oil leaks and reducing environmental impact. However, they may not cool as effectively as oil-filled transformers and could require additional cooling equipment for larger capacities. Typically, dry-type transformers are more expensive than their oil-cooled counterparts.
Dry-type transformers find applications in various settings:
In industrial environments, they provide low-voltage power transmission to various equipment, offering safety advantages when installed indoors.
They are widely used in shopping malls and other commercial buildings for powering lights, HVAC systems, elevators, etc., due to their low ignition risk.
In railroad vehicles and systems, especially in enclosed spaces like subways, dry-type transformers offer enhanced safety and space-saving benefits.
Dry-type transformers operate on the principle of electromagnetic induction, using two windings on an iron core to transform voltage. The heat generated during this process is dissipated via air cooling, contrasting with oil-filled transformers that use oil and cooling fins for heat dissipation.
Considerations for choosing a dry-type transformer include required capacity, voltage, and operating environment:
Select a capacity that can handle average power usage efficiently, typically around 60% of the transformer's capacity, while accommodating maximum power and inrush currents.
Choose appropriate high and low-voltage sides, taking into account the specific requirements of the location and the load.
Consider the installation location and environmental factors like humidity, temperature, and vibration to ensure the transformer's suitability and durability.
Dry-type transformers differ from molded transformers in cooling methods and protection performance. While dry-type transformers use varnish for winding protection and require external protection against physical damage and moisture, molded transformers encapsulate windings in insulating materials like epoxy resin for cooling and protection. This difference affects the manufacturing costs and applications of each transformer type.
*Including some distributors, etc.
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ELSCO Product & Service was founded in the USA in 1912, is a manufacturer of medium-voltage transformers with ratings ranging from 500 to 2500 kVA and primary voltages between 2400 and 34500 volts. Company's dry transformers utilize circulating air for coil and winding insulation, effectively protecting them from overheating. These transformers employ an internal insulation principle that is cold, silent, non-flammable, and housed within enclosed casings. ELSCO's dry transformers are constructed with specially designed laminated steel cores, 100% copper windings, and insulation materials which are meticulously hand-wound and assembled under strict quality control.
Electro-Mechanical, LLC is a manufacturer of electrical apparatus and power distribution components headquartered in Bristol, Virginia, USA and was established in 1971. The company is a major American maker of electrical equipment. Line Power, Federal Pacific, and Mirus International are three of the company's partitions that have earned acclaim in the United States and beyond as important providers of power distribution components, creators of pioneering mining infrastructure, and providers of unrivaled manufacturing insight and customer service including five factories and two maintenance and repair businesses.
Pearse Betram+ was founded in 1947 in Bloomfield, Connecticut. Today Pearse Bertram+ is an end-to-end solutions provider for the manufacturing industry. Pearse Bertram+ is ISO 9001:2015 certified and also UL508A (industrial control panels), IPC 620 (wire harness assemblies), and IPC-A-610, J-STD-001, and IPC-7711 certified for soldering. Pearse Bertram+ operates in both contract manufacturing and engineering support. The manufacturing segment includes electrical, pneumatic, robotic, hydraulic, and process systems. Engineering support includes support for operation of robotics, machinery design and usage, industrial automation, value engineering, and auditing.
AFP Transformers Corporation was founded in 1992 as a conglomerate of 3 other veteran companies and is headquartered in Edison, New Jersey. The company is a manufacturer of components used by mining, wastewater, semiconductors, public utilities, and other industries. The company’s products include specialty magnets, power quality products, and the company’s namesake, transformers. The company’s transformer lineup covers standard heating and furnace transformers to types of epoxy-cast transformers with both primary and secondary coils cast in a mold under a vacuum, embedding them in epoxy material to protect them from contaminates and damage during power surges.
Neeltran, which stands for New Energy Transformer and Rectifiers, is headquartered in New Milford, Connecticut. The company is now a part of AMSC and is an ISO-9001-2015 certified designer and manufacturer of its own rectifier transformers and DC rectifiers to customers around the world across diverse industries including aerospace, mining, and petrochemicals. In addition to transformers and DC rectifiers, the company produces reactors and inductors, and turn-key solutions. The company also offers repair, retrofit, rewind, and remanufacturing of rectifiers and transformers.
L.A. Woolley Electric, Inc. (L.A. Woolley) was founded in Buffalo, New York in 1916 as a supply distributor to serve the industrial and commercial marketplace. The company offers products from such manufacturers as Acme, Mersen, Pass & Seymor, and Wago. The company specializes in control and panel board products, transformers, terminal blocks, wiring accessories, as well as hazardous location products. The company's in-house sales team also support customers in selecting, ordering, and receiving the correct order.
Acme Electric, established in 1917, based in Menomonee Falls, Wisconsin, has been manufacturing power conversion and power conditioning equipment for use in industrial, commercial and OEM applications. The company’s product’s portfolio includes general purpose transformers, industrial control transformers, appliance transformers, drive isolation transformers, and low voltage/lighting transformers, among others. They’re products cover the full spectrum of applications, from commercial basic electric distribution and high harmonic disorders to specific commercial motor drive/factory automation systems. The company works with customers from initial concept and design all the way through to testing and final production to deliver the perfect solution.
TVW Electronics was established in 1986 and headquartered in Decatur, Alabama. The company is a distributor of electrical supplies for both individual and corporate customers. Suppliers include Easton, Klein Tools, RAB Lighting, Allied Tube & Conduit, and many others. The company’s services include initial product consultation, lighting layout assistance, inventory & rush delivery, and special services for contractors. Product categories vary by market which are commercial, industrial, and industrial. Featured products and services include energy audits to maximize safety, efficiency, and cost savings.
Hitachi, Ltd was established in 2002 and headquartered in Chiyoda-ku, Tokyo is a manufacturer of industrial electrical equipment and system solutions. The company offers an extensive and diversified product portfolio including industrial drive systems, power electronics, energy-related equipment, power distribution systems, and various other industrial solutions. These products serve as integral components that drive advancements in industrial capabilities across diverse sectors by playing a pivotal role in promoting energy conservation and storage, automating robot systems in large factories, enabling smarter manufacturing through digital solutions, and facilitating efficient transportation within industrial facilities.
DAIHEN Corporation, established in 1919 and headquartered in Osaka, Japan, is a manufacturer of Power Products, Industrial Robots, and RF/MW Generators & Automatic Matching Units for plasma applications. The company provides an extensive array of products, including Oil-immersed Transformer, Cast Resin Transformer suitable for high buildings, public facilities, and hospitals, Power Distribution Equipment such as closed type power distribution boards and remote monitoring systems, as well as Sensors for Robot Welding and Positioners & Sliders. The company also offers various welding & cutting machines, including TIG Welding Machines, Plasma Cutting Machines, as well as Peripheral Devices for Welding.
SGB-SMIT Group, established in Germany in 1913, is a manufacturer of large power transformers and single-winding core construction. As the electrical power network continues to evolve, there is a growing demand for transformers with higher voltages and capacities. This includes transformers of large and medium power, oil-filled distribution transformers, compact substations, and other products that find application in industries, power generation, railways, clinics, residential and commercial buildings, and more. SGB-SMIT Group operates across three continents and in eight countries, with facilities in Germany, the Netherlands, the USA, Malaysia, and others.
Westinghouse Electric Corporation, founded in Central Bridge, New York, in 1846 is a manufacturer of generators and power solutions. The company's product portfolio includes Industrial Power Systems, Renewable Energy Solutions, pressure washers, lawn and garden tools and dual fuel generators. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. The company also provides services including national distribution, product selection, customized services, technical support and customer service.
Alfanar Group, based in Riyadh, Saudi Arabia, is a manufacturer of electrical construction products for domestic and industrial use and also provides EPC solutions. The manufacturing arm produces low-, medium-, and high-voltage electrical products, including electrical switches, wires, and sockets. The construction division aims to build sustainable power generation and transmission projects and can build industrial projects like factories, water projects, and commercial projects like corporate office buildings. The company has international offices in Turkey, Germany, and Italy and provides several engineering services, including advanced technical training, steel structure fabrication, and calibration services.
WEG, founded on 16 September 1961, is the world’s largest manufacturer of commercial and industrial electric motors, gearboxes, automation technologies, power generation equipment, and related equipment. Such products are used in the manufacturing of pumps, compressors, fans, and more. The company started with the motive of manufacturing electric motors, but soon it expanded its services to the manufacturing of electric and electronic components, industrial automation technologies, power and distribution transforms, etc. The company has been awarded various ISO certifications. Different companies, including PAUMAR, GEREMIA and 16 more, are affiliated with the WEG group.
Hitachi Energy Ltd., established in 2018, based in Zurich, Switzerland, is a global technology supplier that is advancing a sustainable energy future. The company manufactures and supplies a comprehensive range of capacitors and filter solutions that improves the power quality of electrical networks. They serve customers in the utility, industry and infrastructure sectors with solutions and services across the chain. The company has a proven track record and unparalleled installed base in more than 140 countries. They employ around 38,000 people in 90 countries.
Sunbelt Solomon Services, LLC, founded in 1981 in Kansas, USA, is a distributor and provider of new and reconditioned transformers and electrical equipment, as well as related services. The Company specializes in new and reconditioned transformers, switchgear, and other electrical components, offering services such as repairs, rentals, and distribution for the commercial, industrial, and utilities markets. It serves customers who may not have access to traditional supply chains, providing them with long-term power solutions tailored to their needs. Sunbelt Solomon Services assesss, appraises, and manages the disposition of various electrical products like transformers, voltage regulators, and reclosers within the United States.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | AFP Transformers Corp. |
12.6%
|
| 2 | Electro-Mechanical, LLC |
9.6%
|
| 3 | ELSCO Transformers |
8.6%
|
| 4 | Acme Electric |
8.1%
|
| 5 | Neeltran, Inc. |
7.8%
|
| 6 | Pearse Bertram+ Streamline Contract Manufacturing |
7.4%
|
| 7 | L. A. Woolley Electric, Inc. |
7.1%
|
| 8 | Westinghouse Electric Corporation |
6.8%
|
| 9 | WEG Electric Corp. |
6.2%
|
| 10 | SGB-SMIT |
5.5%
|
Derivation Method
The ranking is calculated based on the click share within the dry type transformer page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
8 | 66.7% |
|
Japan
|
2 | 16.7% |
|
Germany
|
1 | 8.3% |
|
Switzerland
|
1 | 8.3% |
41 products found
41 products
Nichidensha Co., Ltd.
20+ people viewing
Last viewed: 17 hours ago
Very Fast Response
We manufacture various dry type transformers and dry type reactors. ■Summary ・Other voltage specifications, frequencies, and models with electros...
Nichidensha Co., Ltd.
30+ people viewing
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Very Fast Response
We manufacture various dry type transformers and dry type reactors. ■Summary ・Other voltage specifications, frequencies, and models with electros...
Nichidensha Co., Ltd.
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Last viewed: 1 hour ago
Very Fast Response
We manufacture various dry type transformers and dry type reactors. It is also possible to produce other than Y-Δ connections. Other voltage specif...
Kitamoto Tech Co., Ltd.
50+ people viewing
Last viewed: 10 hours ago
■Features Transformers also utilize inductors (usually called coils). A transformer is made up of multiple coils that are magnetically coupled (mut...
Eagle Rise Japan Co., Ltd.
220+ people viewing
Last viewed: 1 day ago
■Summary Energy saving is an abbreviation for "energy saving". It refers to the efficient use of energy to prevent limited energy resources such as...
Aihara Electric
60+ people viewing
Last viewed: 22 hours ago
Very Fast Response
The primary and secondary windings are insulated. Also available with shield. ■Features -Achieved a weight reduction of approximately 3kg compared...
DAIHEN Corporation
660+ people viewing
Last viewed: 11 hours ago
■Flame retardant and excellent disaster prevention, ideal for public facilities, high-rise buildings, hospitals, etc. It has a compact, simple and ...
10 models listed
Hikari Alphax Co., Ltd.
10+ people viewing
Last viewed: 1 day ago
Fast Response
Eagle Rise Japan Co., Ltd.
430+ people viewing
Last viewed: 14 hours ago
2 models listed
Eagle Rise Japan Co., Ltd.
360+ people viewing
Last viewed: 20 hours ago
4 models listed
KEC Co., Ltd.
20+ people viewing
Last viewed: 9 hours ago
■Mold transformer NF series Compared to the old JIS product (JIS C 4306-1999) that is currently widely used, this transformer has achieved a signif...
KEC Co., Ltd.
30+ people viewing
Last viewed: 4 hours ago
Fuji Electric's Top Runner Moltra 2014 (FM-T14 type) is characterized by its energy savings, which reduces energy consumption efficiency by approxi...
KEC Co., Ltd.
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Fuji Electric Special High Voltage Moltra FM-EH type and FM-CH type have a lower volume ratio compared to the conventional product FM-CF type due t...
KEC Co., Ltd.
30+ people viewing
Last viewed: 9 hours ago
Fuji Electric's special high voltage Moltra FM-CF type is a special high voltage molded transformer that supports a wide range of rated capacities ...
KEC Co., Ltd.
30+ people viewing
Last viewed: 8 hours ago
Passed all IEC60076-11 test items for flame retardancy and obtained certification. This is a molded winding wire with high insulation performance t...
KEC Co., Ltd.
20+ people viewing
Last viewed: 9 hours ago
Fuji Electric Molded Transformer Three-phase special transformer FM-KF type, FM-CF type, common lighting transformer (different capacity delta tran...
Eagle Rise Japan Co., Ltd.
160+ people viewing
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■Summary High efficiency amorphous specification available
KEC Co., Ltd.
30+ people viewing
Last viewed: 9 hours ago
DAIHEN Top Runner molded transformer TOP ECOⅡ series is a high-efficiency transformer compatible with Top Runner that complies with "JIS C 4306:201...
Eagle Rise Japan Co., Ltd.
240+ people viewing
Last viewed: 1 day ago
■Summary High efficiency amorphous specification available
6 models listed
KEC Co., Ltd.
20+ people viewing
Last viewed: 9 hours ago
DAIHEN's Top Runner molded transformer ULTRA ECO series is a high-efficiency transformer that is compatible with Top Runner and has significantly c...
KEC Co., Ltd.
20+ people viewing
Last viewed: 9 hours ago
Hitachi power distribution transformer "Super Top Runner II" mold series is suitable for facilities where disaster prevention is of paramount impor...
KEC Co., Ltd.
20+ people viewing
Last viewed: 7 hours ago
The R series is a Top Runner molded transformer that meets the 2nd Top Runner standards. This is approximately 1.5 times more energy efficient than...
KEC Co., Ltd.
30+ people viewing
Last viewed: 9 hours ago
The super high efficiency molded transformer EX-α series exceeds the second Top Runner standard and boasts even greater energy-saving performance. ...
