Transformers
Transformers
Discover our comprehensive range of high-performance Transformers, engineered for reliable power distribution across diverse applications. We offer a full spectrum, including robust Pad Mounted Transformers for secure underground systems, efficient Distribution Transformers for utility grids, and space-saving Pole Mounted Transformers for overhead lines. For sensitive indoor environments, our Dry Type Transformers deliver exceptional safety without liquid coolants. Completing our lineup are powerful Power Transformers, vital for bulk energy transmission. Featuring advanced insulation (oil-filled or cast resin), optimized core designs, and adherence to international standards, our transformers ensure minimal energy loss, optimal voltage regulation, and long-term operational stability for industrial, commercial, and utility sectors.
200kV High Voltage Power Transformers – Reliable & Efficient Solutions
The 200kV High Voltage Power Transformer is engineered to support large-scale power transmission systems requiring high reliability, electrical efficiency, and long-term operational stability. Designed for modern grid infrastructures, this transformer enables safe and efficient voltage transformation across extended transmission distances while minimizing energy losses. Its oil-immersed insulation system ensures strong dielectric performance and effective thermal management under continuous high-voltage stress. The transformer structure is optimized to withstand electrical, thermal, and mechanical loads, supporting stable operation under fluctuating demand conditions. Precision manufacturing and advanced design techniques contribute to low maintenance requirements and extended service life. Suitable for utility substations and critical power nodes, this transformer delivers dependable performance for high-capacity transmission and grid interconnection projects.
220kV 3-Phase Oil-Immersed Power Transformer – Reliable & Efficient
The 220kV 3-Phase Oil-Immersed Power Transformer is designed for high-capacity transmission and substation systems that demand long-term reliability and superior electrical efficiency. Built for modern power grids, it enables stable voltage transformation while minimizing operational losses over extended transmission distances. The oil-immersed insulation system provides excellent dielectric strength and efficient heat dissipation, supporting continuous operation under heavy electrical loads. Advanced core and winding design reduces noise and energy loss while improving voltage regulation accuracy. The robust mechanical structure enhances resistance to thermal stress and short-circuit forces, ensuring dependable performance in demanding grid environments. This transformer is ideal for utility substations, regional grid interconnections, and critical power infrastructure requiring efficient, safe, and stable high-voltage power delivery.
230kV 3-Phase Step-Down Power Transformer
The 230kV 3-Phase Step-Down Power Transformer is designed to reduce high transmission voltages to suitable distribution levels while maintaining excellent efficiency and operational stability. Engineered for utility substations and large-scale grid interfaces, this transformer ensures safe and controlled power delivery from high-voltage networks to regional or industrial distribution systems. Its oil-immersed insulation system provides strong dielectric protection and efficient thermal dissipation, enabling reliable continuous operation under varying load conditions. Precision core construction and optimized winding layout help minimize energy losses and voltage fluctuation. The transformer’s robust mechanical design enhances resistance to short-circuit forces and thermal stress, supporting long service life and low maintenance. This solution is ideal for modern power grids requiring dependable voltage transformation and efficient energy management.
260 kV 20MVA 28 MVA Substation Power Transformer
The robust 260 kV 20/28 MVA substation power transformer, engineered for high-voltage applications in modern electrical grids. This oil-immersed unit features dual capacity ratings for flexible operation under varying loads, ensuring efficient power distribution and voltage step-down in utility substations. With advanced insulation systems and low-loss core materials, it minimizes energy dissipation while handling peak demands reliably. Ideal for integrating renewable energy sources or industrial power systems, this transformer complies with IEC 60076 standards, offering superior performance in harsh environments. Its compact design facilitates easy installation, making it a top choice for upgrading aging infrastructure or expanding grid capacity.
300 kV 31.5MVA 40 MVA High Voltage Power Transformer
Unlock superior grid performance with the state-of-the-art 300 kV 31.5/40 MVA high voltage electrical power transformer, tailored for efficient voltage conversion in expansive transmission networks. This robust, three-phase design operates with ONAN cooling at 31.5 MVA and escalates to ONAF at 40 MVA, incorporating cutting-edge biodegradable ester insulation fluids for enhanced fire safety and environmental sustainability as per 2025 regulations. Built with high-grade grain-oriented silicon steel cores to achieve efficiency rates exceeding 98%, it reduces no-load losses and supports seamless integration with HVDC systems and renewable energy hubs. Advanced features include IoT-enabled Sensformer-like monitoring for real-time diagnostics, predictive analytics to prevent downtime, and compliance with updated IEC 60076-2025 and IEEE C57.12.00 standards for superior dielectric strength and thermal resilience. Ideal for harsh operational settings, its modular construction allows for quick field repairs, while anti-vibration mountings ensure low noise levels under 55 dB, making it perfect for proximity to populated areas.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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