Jiangsu Yawei Transformer Co., Ltd.

Pole Mounted Transformer

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Yawei's 750kV, 500kV, 400kV, 330kV, 220kV, and 110kV ultra-high voltage transformers, as well as various dry-type transformers, oil-immersed transformers, and amorphous alloy transformers of 35kV and below, are meticulously designed, engineered, and rigorously tested, fully complying with the highest international industry standards, including IECC, TUV, UL, CE, KEMA, and GOST certifications.

The delivery time for main transformers is only 60 days, distribution transformers 20 days, dry-type transformers 15 days, and U-type transformers 30 days. This exceptional delivery speed helps customers seize market opportunities.

 

Product Scope

‍5 kVA - 333 kVA base

Up to 34.5kv

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Product Advantages

 

 

YAWEI supplies power pole-mounted transformers,including single-phase and three-phase pole-mounted transformers.It can reduce the length of low-volt-age distribution lines,lower line losses and improve power suply quality The transformer adopts a highly eficient and energy-saving cil core structuredesign.The characteristics of this transformer are small size,low infrastructure investment,reduced low-voltage power supply radius,and low-voltage lineloss of over 60%.It adopts a flly sealed structure,has strong overload capacity,high relibit in continuous operation and simple maintenance. tis applica-ble to rural power grids,remote mountainous areas,scattered illages,agricultral production,and lighting power consumption.It can also be used forenergy-saving renovations of railways and urban power grids.Our transformers are designed with advanced technology, using high-quality materials andcomponents.They are reliable in quality and have a long operating time.
 

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Types of Pole Mounted Transformer

By Number of Phases

Single-Phase Transformers: The most common type seen in residential and rural areas. They handle a single phase of high-voltage distribution and typically step it down to standard household voltages (like 120/240V or 230V) for light domestic loads.

Three-Phase Transformers: Used in commercial, light industrial, or high-density urban areas. They can be installed as a single large unit or as a "bank" of three individual single-phase transformers wired together on a platform to supply heavy machinery and commercial HVAC systems.

By Protection Mechanism

Conventional Type: These units lack internal protective devices. Instead, external components—such as lightning arresters and fused cutout switches—must be mounted separately on the pole to protect the transformer from power surges and short circuits.

Completely Self-Protected (CSP) Type: These modern units integrate all critical safety mechanisms inside the transformer tank. They feature internal circuit breakers, emergency fuse links, and direct-mounted lightning arresters, making installation cleaner and reducing the footprint on the pole.

By Tank Design and Cooling

Standard Round Tank: The traditional, structurally rigid design that optimizes oil volume and footprint.

Corrugated or Finned Tank: Built with folded metal walls to maximize surface area. This enhances natural heat dissipation (Oil Natural Air Natural, or ONAN cooling), making them ideal for hotter climates or high-load demands.

 

 

 

Applications Of Pole Mounted Transformer

Residential Power: This is their most visible use. Single-phase units step down primary distribution lines to standard household voltages (like 120/240V or 230V), with a single transformer typically supplying a cluster of nearby homes.

Rural & Agricultural Areas: Where underground cabling is cost-prohibitive, these transformers efficiently bring electricity to isolated farmhouses, large-scale irrigation pumps, and livestock facilities over expansive distances.

Commercial & Light Industry: Installed as a single three-phase unit or a "bank" of three single-phase units, they deliver higher voltages (such as 208V or 480V) to power retail stores, restaurants, and small workshops running heavy electric motors.

Municipal Infrastructure: They provide localized power for public systems directly from existing utility poles, operating streetlights, traffic signals, highway toll booths, and intersection cameras.

Remote Telecom: They supply dedicated power to isolated infrastructure, including cellular towers and railway signaling equipment along transit corridors.

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How To Custom Power Transformer Process at Yawei?

 
 
 
 

Initial Consultation

Our customization process begins with an in-depth consultation to understand your specific needs. During this phase, we discuss your technical requirements, the application environment, and any special features you may need in your transformers. This consultation helps us gather all the necessary information to design a transformer that perfectly meets your requirements.

 
 

Design and Prototyping

Based on initial consultation, our engineering team designs a prototype that meets your specifications. This stage involves rigorous testing and validation to ensure the prototype performs as expected. We use advanced design software and simulation tools to create accurate models and test them under various conditions.

 
 

Material Selection

Choosing the right materials is crucial for the performance and durability of the transformer. We carefully select high-quality materials that match the specific needs of your application. Our team considers factors such as thermal stability, electrical conductivity, and mechanical strength to ensure the materials used will provide optimal performance.

 
 

Production and Quality Control

Once the prototype is approved, we move into full-scale production. Our production process is highly efficient and incorporates stringent quality control measures at every stage. We conduct various tests, including electrical, thermal, and mechanical tests, to ensure each transformer meets our high standards.

 
 

Testing and Validation

Before the final product is delivered, it undergoes comprehensive testing and validation. We simulate real-world operating conditions to ensure the transformer will perform reliably in its intended environment. This thorough testing process helps us catch any potential issues before they become problems, ensuring the highest quality for our customers.

 
 

Delivery and after-sale Support

Timely delivery is crucial, and we pride ourselves on our efficient production and logistics processes. We ensure that your order is delivered on time and in perfect condition. Additionally, our customer support team is always available to assist with any post-delivery questions or issues, ensuring complete satisfaction.

 
 

Value-Added Services

At Yawei Transformer, we strive to provide a comprehensive solution that goes beyond just the transformer itself. We offer value-added services such as custom labeling, packaging, and documentation to meet your specific needs.

Whether you require specialized labeling for identification or traceability purposes, or you need customized packaging solutions for safe transportation and storage, we have the capabilities to accommodate your requests.

 
 

Global Reach and Customer Support

As a leading custom power transformer manufacturer in China, we have established a strong global presence, serving customers across Europe, North America, Russia, Uzbekistan, Mexico, and many other regions. Our extensive customer base is a testament to our commitment to quality, reliability, and exceptional customer service.

 
Our Factory
 

Yawei Group has over 3000 employeesincluding more than 300 engineering and technical personel.The company covers an area of more than 1200 mu(80 hectares)and has a sales revenue of about 6 billion yuan in 2025.Among them,Jiangsu Yawei Transformer Co Ltd.has an annual sales revenue of over2 billion yuan.Jiangsu Yawei Transformer Co,Ltd.has been awarded the titles of National High tech Enterprise,National Specialized and Innovative "LittleGiant"Enterprise,Jiangsu Province High quality Development Technology Innovation Enterprise,Jiangsu Province Quality Trustworthy Enterprise,JiangsuProvince Famous Brand Enterprise,Jiangsu Province Quality integrity Five Star Enterprise,Provincial Five Star Cloud Enterprise,Nantong City AdvancedCollcie for Contract Abiding and Creditworthiness,Nantong City Science and Technology Progress Award,Nantong city Excellent Private Enterprise,Nantong City Civilized Unit.Nantong City Top 100 Private Enterprises,Hai'an City Industrial Growth Enterprise,Hai'an City Top 20 Industrial Enterprises,Hai'an City Top 10 High tech Enterprises,Hai'an City Quality Model Enterprise,and Hai'an City Mayor's Quality Award.


The company has strong production capacity and aneficient marketing team.The products include
500kv,400kV,330kV,220kv,and 110kV ultra-highvoltage transformers,various dry-type transformers/oil immersed transformers/amorphous alloy transformers of 35kV and below,new energy transform-ers,and prefabricated substations,Export series:single-phase transformer,three-phase transformer,cylindrical transformer,isolation transformer,controltransformer,voltage regulator and other products,And various specifications of special transformers such as grounding transformers,arc suppressioncois,Bitcoin transformers,prefabricated cabins,eactors,electric furnace transformers,rectifier transformers,mining transformers,marine transformers,etc.All eries of products of the company have passed the routine,type,and specil tests of the National Transformer Quality Supervision and IlnspectionCenter,Wuhan Branch of China Electric Power Research Institute,and Suzhou Electric Science Research institute.The enterprise has successively passedISO9001,ISO14001,ISO45001,SA8000 system certification,Jiangsu Province Enterprise Metrology Qualification Certification.At the same time,10kV and35KV level distribution transformers and box type substations have obtained international Electrotechnical Commission IEC certification,US UL certifica-tion,German TUV certification,EU CE cetification,Dutch KEMA certifcation,and GOST certification.Our product sales cover the global market,inluding123 countries and regions such as the United States,Europe,Canada.Mexico.etcIn 2025,our company sucesfully delivered the domestically pioneering fully-insulated ultra-high-voltage (UHV)large-capacity transformer(250MVA/345kV),which has been put into operation at the world's largest Alcomputing power center.Meanwhile,the construction of our UHV 765KV transformer manufacturing plant(scheduled for completion in October 2026)marks our imminent entry into the first tier of UHV equipmentmanufacturing and testing sectors,further consolidating our competitiveness in the globalmarket.

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Electrical Steel Cut-to-Length Line

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Automatic Core Stacking Robot System

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Lamination Core

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Paper Wrapping Machine

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Winding Procedure

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Transformer Assembly Operation

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Our Products

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Factory Acceptance Test

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Test Station

 
Certifications
 
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After-sales service

 
01.

Warranty

Transformers typically come with a minimum two-year warranty (some products offer a one-year "three-guarantee" service – repair, replacement, and return). Warranty coverage usually includes performance issues caused by manufacturing defects and non-human factors. Extended warranties are also available.

02.

Repair and Maintenance

We have a comprehensive after-sales service system capable of immediately resolving any product problems and ensuring equipment is back in operation. Services include on-site repair and ongoing maintenance support.

03.

On-site Operation and Maintenance Support

We actively collaborate with customers to manage the operation and maintenance of transformers. We can provide guidance and assistance on-site.

04.

After-sales Contact Information

Tel: +8615371741198

Email: peter@yaweitransformer.com

Address: No. 265, Huanghai Avenue West, Hai'an City, Jiangsu Province, China

 

 
FAQ
 

 

Q: What is a Compact Transformer?

A:A Compact Transformer is a space-optimized transformer designed to reduce footprint while still providing reliable voltage conversion. It is widely used in data centers, commercial buildings, and industrial power distribution systems where space is limited.

Q: How is it different from a traditional transformer?

A:

Key differences include:

Smaller footprint for the same or similar capacity

Higher integration level with switchgear or distribution equipment

Flexible installation, especially in indoor or modular environments

Optimized thermal design for higher power density

Q: Where are Compact Transformers commonly used?

A:

Data centers (especially high-density AI facilities)

Underground or space-constrained electrical rooms

Commercial complexes

Industrial plants

Modular power skids or prefabricated electrical systems

Q: Does a Compact Transformer mean lower capacity?

A:

Not necessarily.
“Compact” refers to physical size optimization, not reduced power rating. Many compact designs still support:

Medium-to-low voltage conversion

Multi-MVA power levels

High-density load conditions

Q: How is compactness achieved in design?

A:

Common engineering approaches include:

High-performance magnetic core materials

Advanced insulation systems with higher thermal ratings

Optimized 3D winding configurations

Integrated design with switchgear components

Enhanced cooling systems (air or liquid-assisted)

Q: Are Compact Transformers more prone to overheating?

A:

Not if properly engineered.
However, due to higher power density, they typically require:

More precise thermal modeling

Efficient cooling design

Careful load management under peak conditions

Q: What is the efficiency level?

A:

Modern Compact Transformers generally achieve:

Around 97%–99% efficiency depending on design

Low no-load losses with optimized core materials
Actual performance depends heavily on load profile and harmonic conditions.

Q: Are they suitable for harmonic-heavy environments like data centers?

A:

Yes, but with considerations:

Use K-rated or harmonic-mitigating designs when needed

Combine with harmonic filters or power conditioning systems
Without mitigation, harmonics can increase losses and temperature rise.

Q: Is maintenance more difficult?

A:

Maintenance is generally straightforward:

Oil-immersed types require periodic oil testing

Dry-type units require cleaning and thermal inspections
However, compact layouts may limit physical access for servicing.

Q: Are Compact Transformers more expensive?

A:

Typically:

Higher upfront cost due to advanced materials and engineering

Lower space and installation costs

Often better total cost of ownership (TCO) in data center applications

Q: Are they suitable for AI data centers?

A:

Yes. They are especially well-suited for:

High power-density racks

Modular and rapidly deployable infrastructure

Space-constrained white space environments

Q: What are the future trends?

A:

Key trends include:

Higher power density in smaller footprints

Integration with switchgear and PDUs (power skids)

Digital monitoring and predictive maintenance

Use of advanced low-loss materials (e.g., amorphous cores)

Jiangsu Yawei Transformer Co.,Ltd. is one of the most professional pole mounted transformer manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy high-grade pole mounted transformer made in China here from our factory.

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