Transformers
Transformers
125kVA Oil Immersed Transformer
125kVA Oil Immersed Transformer has the characteristics of high efficiency and low loss, which can several of power consumption and operation cost, and has significant social benefits.It is a high-tech product promoted by the state. The NPC ELECTRIC 125kva Oil Immersed Transformer, manufactured and supplied by a leading Chinese manufacturer, is are highly advanced electrical device engineered to meet the rigorous demands of modern power distribution systems. Crafted with precision and utilizing cutting-edge technology, these transformers are renowned for their exceptional durability, efficiency, and reliability. As a trusted supplier in China, the manufacturer offers a comprehensive range of 125kVA Oil Immersed Transformers tailored to suit various applications, ensuring optimal performance and long-term value to customers worldwide.
160kVA Oil Immersed Transformer
The 160kVA Oil-Immersed Transformer is characterized by its high efficiency and low loss, significantly reducing power consumption and operational costs. This transformer offers notable social benefits and is a high-tech product actively promoted by the government. Produced by a leading Chinese manufacturer, the NPC ELECTRIC 160kVA Oil-Immersed Transformer represents a pinnacle of electrical engineering, designed to meet the stringent demands of contemporary power distribution systems. These transformers are crafted with precision and incorporate cutting-edge technology, renowned for their exceptional durability, efficiency, and reliability. As a trusted supplier in China, the manufacturer provides a comprehensive range of 160kVA Oil-Immersed Transformers tailored to various applications, ensuring optimal performance and long-term value for customers globally.
200kVA Oil Immersed Transformer
The 200kVA oil-immersed transformer produced by our company adopts a new insulation structure to improve the short-circuit resistance; the iron core is made of high-quality cold-rolled silicon steel sheet; the high-voltage winding is made of high-quality oxygen-free copper wire and adopts a multi-layer cylindrical structure; all fasteners are treated with special anti-loosening treatment. 200kVA Oil Immersed Transformer has the characteristics of high efficiency and low loss, which can several of power consumption and operation cost, and has significant social benefits. It is a high-tech product promoted by the state.
250kVA Oil Immersed Transformer
The 250kVA Oil Immersed Transformer produced by NPC ELECTRIC adopts a new insulation structure to improve the short-circuit resistance; the core adopts high-quality cold-rolled silicon steel sheets; the high-voltage winding adopts high-quality oxygen-free copper wire and adopts a multi-layer cylinder structure; all fasteners are specially treated to prevent loosening. The 250kVA oil-immersed transformer has the characteristics of high efficiency and low loss, which can reduce power consumption and operating costs, has significant social benefits, and is a high-tech product promoted by the country.
300kVA Oil Immersed Transformer
In the field of power transmission and distribution, NPC ELECTRIC 300kVA oil-immersed transformer stands out with its excellent performance, providing reliable power support for various power consumption scenarios. The transformer is carefully wound with high-quality silicon steel sheets and electromagnetic wires, with extremely low no-load loss and load loss, which greatly improves the efficiency of power conversion and effectively reduces electricity costs. It is widely used in industrial plants, commercial centers, residential communities, infrastructure construction, and other fields to meet the power needs of different scenarios.
315kVA Oil Immersed Transformer
The 315kVA Oil Immersed Transformers are essential devices that convert electrical energy from one voltage level to another, enabling the efficient transmission and distribution of power across various systems. Oil-immersed transformers, in particular, have become industry favorites due to their superior cooling and insulation capabilities, which extend their lifespan and reduce maintenance requirements. The integration of renewable energy sources, such as wind and solar, requires transformers that can handle the variable output of these sources. 315kVA Oil Immersed Transformers are well-suited for this task due to their robustness and adaptability.
400kVA Oil Immersed Transformer
The 400kVA Oil Immersed Transformer produced by our company adopts a new insulation structure to improve the short-circuit resistance; the iron core is made of high-quality cold-rolled silicon steel sheet; the high-voltage winding is made of high-quality oxygen free copper wire and adopts a multi-layer cylindrical structure; all fasteners are treated with special anti loosening treatment. It has the characteristics of high efficiency and low loss, which can several of power consumption and operation cost, and has significant social benefits. It is a high-tech product promoted by the state.
500kVA Oil Immersed Transformer
The 500kVA oil-immersed transformer complies with ANSI, CSA, NEMA, IEEE, IEC, GB, and DOE standards. NPC ELECTRIC'S 500kVA oil-immersed transformers have a solid core and winding construction using high-quality materials to ensure optimum performance. The core is made of cold-rolled silicon steel sheets to minimize energy loss and increase thermal stability. The windings are constructed with high-grade copper wire for excellent conductivity and heat dissipation.
630kVA Oil Immersed Transformer
NPC ELECTRIC’S 630kVA oil-immersed transformer adopts a high-efficiency and energy-saving design, complies with the IEC 60076 international standard, and ensures stable operation and long life. Its high-quality silicon steel core and high-performance insulating oil provide excellent electrical performance and heat dissipation capabilities. It is widely used in power systems, industrial parks, and commercial facilities to meet different load requirements.In-Depth Analysis
NPC Electric transformers are built to deliver high efficiency, reliable performance, and advanced safety, helping businesses reduce energy costs while ensuring stable power supply. With future-ready adaptability for renewable energy and smart grid applications, they provide a sustainable and innovative solution for today’s and tomorrow’s power needs.
Comparative Analysis of Efficiency and Loss
Compared to the industry average, NPC transformers exhibit lower losses and higher efficiency across the entire load range.
Load Efficiency Comparison(%)
No-load Loss Comparison(W)
High-efficiency Core Design
High magnetic permeability and low loss silicon steel sheets are used and processed by special process to reduce hysteresis loss and eddy current loss and improve conversion efficiency.
Improved Magnetic Permeability
+25%
Reduced Iron Loss
-30%
Multiple Protection Systems
IP65 protection grade design combines multiple protection measures such as anti-corrosion, anti-UV, anti-condensation and anti-small animal intrusion.
Waterproof Performance
IP65
Anti-Corrosion Ability
15 years+
Ultra-low Noise Technology
A special shock-absorbing structure, low-noise fans, and optimized heat dissipation design ensure operating noise is far below industry standards.
Noise Reduction
-15dB
Suitability for Residential Areas
Excellent
Intelligent Cooling System
The heat dissipation system with adaptive temperature control automatically adjusts the heat dissipation efficiency according to the load and ambient temperature to reduce energy consumption.
Heat Dissipation Efficiency
+40%
Temperature Stability
±2℃
Safety Wiring System
Insulated protective cover and anti-misoperation design ensure personnel safety during installation and maintenance and reduce accident risks
Insulation Grade
Class H
Safety Protection
IP2X
Intelligent Monitoring
An optional remote monitoring system is available to monitor operating status, temperature, load and other parameters in real time, and supports fault warning and remote diagnosis.
Data Collection Frequency
one times a minute
Fault Warning Accuracy
98%
Environmental Adaptability Analysis
NPC transformers have been rigorously tested and can operate stably under various harsh environmental conditions.
Temperature Range
-40℃ ~ +55℃
Can work normally in extreme high and low temperature environments
Humidity Adaptation
0 ~ 100% RH
Including condensation environment, no frost requirement
Seismic Resistance Level
IEC 60068-2-57
Suitable for earthquake-prone areas
Altitude
≤3000m
More than special design
Why Choose Us
As a trusted partner in energy savings and the development of green energy solutions, NPC Electric has played a pioneering role in the development of national smart grids across multiple regions.
Transformer Manufacturer
With over 30 years of manufacturing experience, we specialize in delivering reliable and efficient transformer solutions.
Our product portfolio includes Pad Mounted Transformers, Power Transformers, Dry Type Transformers, Pole Mounted Transformers, Oil-immersed Transformer, Substation Transformer and Distribution Transformers, serving diverse applications with proven quality and innovation.
NPC ELECTRIC is committed to providing partners with high-quality, high-performance, and high-reliability transformers.
Our product portfolio includes Pad Mounted Transformers, Power Transformers, Dry Type Transformers, Pole Mounted Transformers, Oil-immersed Transformer, Substation Transformer and Distribution Transformers, serving diverse applications with proven quality and innovation.
NPC ELECTRIC is committed to providing partners with high-quality, high-performance, and high-reliability transformers.
Transformer Installation
NPC Electric’s skilled engineers offer full-cycle support—from design consultation and technical drawings to on-site guidance and after-sales service—ensuring peace of mind at every stage of the project.
We have a technical team of over 60 members and more than 100 after-sales engineers, ready to assist customers with installation and on-site support. Till now, we have provided professional engineering services in countries such as Mongolia, Honduras, Peru, and Rwanda. Our services include winding resistance testing, oil testing, and installation support.
We have a technical team of over 60 members and more than 100 after-sales engineers, ready to assist customers with installation and on-site support. Till now, we have provided professional engineering services in countries such as Mongolia, Honduras, Peru, and Rwanda. Our services include winding resistance testing, oil testing, and installation support.
Transformer Testing
NPC Electric uses high-quality raw materials and advanced production processes, supported by strict quality control systems. Our products meet or exceed international standards such as IEC, UL, and ISO, ensuring safety, reliability, and long service life. All our cables are subject to third-party laboratory testing—such as by SGS, DNV, or witnessed directly by customers—to ensure compliance and performance.
Efficient Logistics & Timely Delivery
With over 4,200 square meters of strategically located warehouse space across China, we guarantee timely delivery and flexible logistics to meet tight global project schedules. We utilize specialized transportation teams across land, sea, and air to assist with shipping your products. We can arrange shipping on EXW, CIF, FOB, FCA, CIP, or any other terms requested by the client.
Product Show
Explore the detailed design and practical application scenarios of NPC transformers
Pad Mounted Transformer
Pad Mounted Transformer Design
3 Phase Transformer
Transformer Internal Structure
NPC Earth Transformer
Safe and reliable
Oil Immersed Transformer
Lightweight and compact with superior performance
Testing and Certification
Tested with precision and certified to meet international standards as
well as strict industry requirements.
Bare Cable Test Report
SGS Inspection Report
Certificate of Acceptance
ISO Quality Certificate
ISO Environmental Certificate
ISO Occupational Certificate
UL Laboratory Certificate
UL Product Certificate
Project Cases
NPC transformers have been successfully applied in many projects and have been highly praised by customers.
Mongolia Industrial Park
CompletedProvide stable and reliable power conversion solutions for industrial parks to meet diverse production needs.
Country：Mongolia
Model：Three Phase Pad Mounted Transformer x 8
Dominican Factory
CompletedEnsure power security in nearby industrial parks and meet diverse needs
Country：Dominican
Model：NPC 450KV Power Transformer x 4
Dominican Electricity
CompletedDry-type transformers provide safe, efficient, and reliable power distribution in Dominican .
Country：Dominican
Model：NPC Dry Type Transformer x 6
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
FAQ From Customers
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What types of transformers do you manufacture?
We provide a full range of transformers including pad mounted transformers, power transformers, dry type transformers, pole mounted transformers, and distribution transformers, etc. -
How do your transformers ensure safety and reliability?
NPC transformers are built with advanced insulation systems, strict quality control, and international standard certifications, ensuring long-term safe and stable performance. -
Can transformers be customized for specific applications?
Yes. We offer customized designs to meet unique requirements in renewable energy, industrial, utility, and commercial applications. -
What is the typical service life of your transformers?
With proper maintenance, our transformers are designed for a service life of 25–30 years or more, ensuring reliable operation with minimal downtime. -
Do you provide after-sales service and technical support?
Absolutely. We offer comprehensive after-sales service, including installation guidance, maintenance support, and technical consultation.
Welcome your inquiry
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