Transformers
132kV 138kV Power Transformer
Command the core of your national transmission grid with our high-capacity 132kV and 138kV Power Transformers. These critical assets are engineered for unparalleled reliability and ultra-efficient voltage transformation at major interconnections, power generation facilities, and large industrial hubs. Our 132kV and 138kV Power Transformers feature advanced oil-immersed designs with highly optimized cooling systems (ONAF, OFAF, OFWF), guaranteeing industry-leading efficiency, minimal losses, superior dielectric strength, and exceptional short-circuit withstand capability. Built for continuous, heavy-duty operation in the most demanding environments, they ensure stable and uninterrupted power flow. Trust our compliant and custom-tailored solutions for your vital extra-high voltage transmission power transformation needs.
132kV 138kV Power Transformer
132kV 138kV power transformer complies with international standards as below standard: 1. IEC 60076 Power Transformers; 2. AS NZS 60076 Power Transformers CSAC88-16 Power Transformers; 3. ANSI/IEEE C57.12.00 IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers; 4. GOST R 52719 Power Transformers - General Specifications; 5. EN60076 Poer Transformer; 6. Local After-Sales Services In North America South
132kV High Voltage Outdoor Power Substation Transformer for Grid Systems
The 132kV High Voltage Outdoor Power Substation Transformer is engineered to support modern grid systems that demand high reliability, operational stability, and long-term performance. Designed for continuous outdoor operation, it features a robust oil-immersed insulation system combined with a mechanically reinforced structure to withstand electrical stress, environmental exposure, and grid fluctuations. The transformer is optimized for efficient power transfer with controlled losses and stable voltage regulation across varying load conditions. Its thermal design ensures effective heat dissipation, supporting extended service life even under high ambient temperatures. Suitable for utility substations and large-scale grid infrastructure, this transformer meets stringent operational and safety requirements while maintaining ease of maintenance and dependable long-term operation in complex power networks.
133kV 135kV Three-Phase Power Transformer – High Voltage Substation Equipment
The 133kV / 135kV Three-Phase Power Transformer is developed for high-voltage substations requiring dependable power conversion, grid stability, and long-term operational security. Designed as core infrastructure equipment, it supports continuous duty under fluctuating electrical loads and complex grid conditions. The transformer integrates a high-strength magnetic core, precision-manufactured windings, and a stable oil-immersed insulation system to achieve controlled losses and consistent voltage performance. Its structural design prioritizes mechanical durability, enabling safe operation under electrical stress, thermal expansion, and external environmental factors. Engineered for outdoor substation installation, the transformer ensures reliable service life with reduced maintenance demand. Compliance with international power equipment standards makes it suitable for modern transmission and substation systems where operational reliability, safety, and efficiency are essential.
138kV / 140kV / 150kV Three-Phase Oil-Immersed Power Transformer
The 138kV / 140kV / 150kV Three-Phase Oil-Immersed Power Transformer is designed to serve high-voltage transmission and substation applications requiring dependable energy transfer and long-term operational stability. Its design emphasizes electrical reliability, structural strength, and efficient thermal management to support continuous service under varying grid loads. The transformer employs a refined magnetic circuit and carefully engineered winding structure to maintain voltage accuracy while minimizing operational stress. An oil-immersed insulation and cooling system ensures effective heat dissipation and insulation integrity throughout extended operating cycles. Built for outdoor installation, the transformer is capable of withstanding environmental exposure, electrical fluctuations, and mechanical demands associated with modern high-voltage networks. It is suitable for utility-scale projects where safety, efficiency, and durability are essential performance criteria.
158kV 250MVA Power Transformer – High-Voltage Substation Autotransformer
The 158kV 250MVA High-Voltage Substation Autotransformer is designed for large-capacity power transmission systems where efficiency, voltage stability, and reduced losses are critical. As an autotransformer, it enables optimized power transfer between closely related voltage levels while minimizing material usage and operational losses. The unit features a robust electromagnetic design, reinforced insulation structure, and an oil-immersed cooling system that ensures effective heat dissipation under heavy continuous load. Its mechanical framework is engineered to withstand high electrical stress, short-circuit forces, and long-term outdoor exposure. Intended for backbone substations and grid interconnection points, this autotransformer supports reliable energy exchange in high-voltage networks and contributes to improved system efficiency and reduced lifecycle operating costs.
High Voltage 160kV Step-Up Power Transformer: Efficient 20MVA / 30MVA / 60MVA Solutions for Substations
The 160kV High Voltage Step-Up Power Transformer is designed to increase voltage levels efficiently for power generation plants and substation applications. Available in 20MVA, 30MVA, and 60MVA ratings, it supports stable energy transmission from generation sources to high-voltage networks. The transformer adopts a carefully optimized electromagnetic design that enhances voltage conversion efficiency while maintaining controlled thermal and electrical performance. Its oil-immersed insulation system ensures reliable cooling and long-term insulation stability under continuous operating conditions. The structural design emphasizes mechanical strength and operational safety, enabling dependable performance in outdoor substations and demanding grid environments. This step-up transformer is well suited for modern power systems that require efficient voltage elevation, reduced transmission losses, and consistent operational reliability.
161kV 50MVA Two-Winding Power Transformer – Efficient Oil-Filled Design with OLTC
The 161kV 50MVA Two-Winding Power Transformer is engineered to deliver precise voltage control and stable power transfer in high-voltage transmission and substation networks. Featuring an oil-filled insulation system combined with an On-Load Tap Changer (OLTC), this transformer allows continuous voltage adjustment under load conditions without interrupting system operation. The electromagnetic design emphasizes low losses, high operational efficiency, and consistent performance across variable load profiles. Robust mechanical construction enhances resistance to thermal expansion and short-circuit forces, ensuring long-term reliability in demanding grid environments. Optimized oil circulation supports effective heat dissipation, contributing to extended service life and reduced maintenance requirements. This transformer is well suited for modern power systems where voltage stability, operational flexibility, and dependable energy transmission are critical.
170kV 4–40MVA Oil-Immersed High-Voltage Power Transformer
The 170kV 4–40MVA oil-immersed high-voltage power transformer is designed to support flexible capacity requirements across modern transmission and substation systems. Its wide MVA range allows a single platform to adapt to diverse grid configurations, from regional substations to industrial power interfaces. The transformer utilizes a refined oil-paper insulation system to ensure strong dielectric performance and long-term operational stability under high electrical stress. Advanced magnetic circuit optimization minimizes losses while maintaining excellent voltage regulation. The mechanical structure is engineered to withstand thermal cycling, short-circuit forces, and continuous operation under variable load conditions. With a focus on reliability, efficiency, and service life, this transformer is well suited for utility-scale projects that demand dependable high-voltage energy transfer with adaptable power ratings.In-Depth Analysis
Power 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.
Comparative Analysis of Efficiency and Loss
Compared to the industry average, 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
+30%
Reduced Iron Loss
-35%
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
96%
Environmental Adaptability Analysis
Power 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
Discover why our power transformers are trusted worldwide for efficiency, safety, and reliability.
Essential for EHV Transmission
Our 132kV and 138kV Power Transformers are pivotal for Extra-High Voltage (EHV) transmission systems, forming the essential core of national and regional power grids. These high-MVA capacity transformers are meticulously engineered to handle the massive power flows and rigorous voltage demands of main transmission lines, large generation plants, and critical grid interconnections. Their precise and stable voltage transformation ensures seamless power transfer across vast distances. By choosing our EHV transmission transformers, you invest in vital equipment that underpins the stability, capacity, and resilience of your electrical infrastructure, facilitating reliable power delivery to major load centers.
Max Efficiency & Low Lifetime Cost
We engineer our 132kV and 138kV Power Transformers for exceptional efficiency and minimal lifetime costs, driving significant long-term economic benefits for utilities. Leveraging advanced magnetic core designs, optimized winding configurations, and state-of-the-art cooling systems (ONAF, OFAF, OFWF), these transformers achieve industry-leading low losses. This translates directly into substantial energy savings, reduced operational expenses, and a lower environmental footprint over their extended service life. By deploying our high-efficiency EHV transformers, you maximize return on investment, enhancing the economic viability and sustainability of your extra-high voltage transmission network.
Uncompromising Reliability & Robustness
Our 132kV and 138kV Power Transformers offer uncompromising reliability and are built with robust construction, designed for continuous, heavy-duty operation in the most demanding environments. These oil-immersed units feature premium insulation materials, advanced surge protection, and a highly resilient mechanical structure, ensuring superior dielectric strength and exceptional short-circuit withstand capability. Each transformer undergoes rigorous testing to guarantee long-term operational stability and resilience against electrical stresses and external factors. By selecting our ultra-reliable EHV transformers, you secure your transmission substations and vital power infrastructure with equipment proven to deliver unwavering power flow for decades.
Custom Solutions for Grid Integration
We provide tailored solutions for our 132kV and 138kV Power Transformers, precisely meeting the intricate demands of complex EHV grid integration and large-scale projects. Our expert engineering team collaborates closely with clients to define optimal MVA ratings, specific impedance values, advanced On-Load Tap Changer (OLTC) configurations, and specialized cooling arrangements. Whether for new inter-regional power lines, major power plant connections, or grid modernization, we deliver designs that maximize performance and site compatibility. By choosing our custom EHV transformers, you acquire a perfectly engineered solution that seamlessly integrates into your electrical infrastructure, ensuring peak performance and adaptability for future grid challenges.
Product Show
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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
Power transformers have been successfully applied in many projects and have been highly praised by customers.
Venezuela Residential Area
CompletedProvide stable and reliable power conversion solutions for the residential area to meet diverse production needs.
Country：Venezuela
Model：220kV Power Transformer x 5
Uruguay Data Center
CompletedEnsure the power safety of surrounding residents and meet daily work needs
Country：Uruguay
Model：350kV Power Transformer x 10
Dominican Factory
CompletedNPC transformers provide safe, efficient, and reliable power distribution in the Dominican.
Country：Dominican
Model：450kVA Power Transformer x 4
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 is the primary function of 132kV and 138kV Power Transformers?
132kV and 138kV Power Transformers are fundamental to Extra-High Voltage (EHV) transmission systems. They are primarily used in major substations to efficiently step up or step down voltage for long-distance power transmission, managing large-scale power flow between generation sites and critical distribution points across national grids. -
How do your 132kV/138kV Power Transformers ensure ultra-reliable operation?
Our 132kV/138kV Power Transformers are designed for ultra-reliable operation through robust oil-immersed construction, superior dielectric strength, and exceptional short-circuit withstand capability. Rigorous testing and high-quality components ensure long-term stability and minimal failures in demanding EHV grid environments. -
Can these EHV transformers be customized for specific project needs?
Yes, we offer customized solutions for our 132kV and 138kV Power Transformers. Our engineering team works to tailor specifications like MVA ratings, impedance, advanced On-Load Tap Changer (OLTC) configurations, and specific cooling systems (ONAF, OFAF, OFWF) for seamless EHV grid integration. -
What cooling methods are employed in your 132kV/138kV Power Transformers?
Our 132kV/138kV Power Transformers utilize advanced oil-immersed cooling systems suitable for EHV applications. These typically include ONAF (Oil Natural Air Forced), OFAF (Oil Forced Air Forced), and for very high capacities, OFWF (Oil Forced Water Forced), ensuring efficient heat dissipation and sustained performance. -
How do your 132kV and 138kV Power Transformers contribute to overall grid efficiency and sustainability?
Our 132kV and 138kV Power Transformers contribute significantly to grid efficiency by achieving minimal losses during power transformation. This reduces energy waste, lowers operational costs, and minimizes environmental impact, promoting greater sustainability within the EHV power transmission network by maximizing energy delivery.
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