Transformers
35kV 46kV Power Transformer
Deliver optimized and reliable power transformation at medium-high voltage with our 35kV and 46kV Power Transformers. These specialized transformers are crucial for stepping up or stepping down voltage within industrial applications, sub-transmission networks, and renewable energy interconnections. Our 35kV and 46kV Power Transformers are precision-engineered with robust oil-immersed designs and efficient cooling systems, ensuring exceptional efficiency, low losses, superior dielectric strength, and high short-circuit withstand capability. Built for continuous operation in challenging environments, they guarantee stable power flow and grid integration. Trust our compliant and custom-tailored solutions for your specific medium-high voltage power transformation needs.
11/0.4kV 630kVA Oil-Immersed Power Transformer Distribution Type
Discover our premium 11/0.4kV 630kVA Oil-Immersed Power Transformer, engineered for superior high-efficiency distribution in modern electrical grids. This robust transformer features advanced silicon steel cores that minimize energy losses, ensuring up to 98% efficiency under full load. Ideal for urban and rural power networks, it incorporates eco-friendly insulating oil with high dielectric strength, providing reliable voltage step-down from 11kV to 0.4kV while handling demanding loads up to 630kVA. Built with corrosion-resistant tanks and precision-wound copper coils, this distribution transformer guarantees long-term durability, reduced maintenance, and compliance with international standards like IEC 60076. Whether for residential complexes, commercial facilities, or industrial applications, it optimizes power delivery, lowers operational costs, and supports sustainable energy practices. Experience unmatched performance with this high-efficiency oil-immersed transformer designed for seamless integration into your power system.
7MVA 22kV to 6.6kV Power Transformer ONAN Cooling Low Loss
The 6kV Three-Phase Oil-Immersed Power Transformer is designed for stable and efficient voltage conversion in industrial and commercial power distribution systems. With a durable oil-immersed insulation structure and high-quality copper windings, it offers excellent thermal performance, strong dielectric strength, and reliable operation under varying load conditions. Its compact design, robust core materials, and advanced cooling system ensure low losses, reduced noise, and long service life. This 6kV transformer is suitable for factories, mining sites, distribution stations, and utility networks requiring consistent and safe electrical power supply. Engineered to meet international standards, it provides dependable performance and high efficiency across diverse low-to-medium voltage applications.
33/0.4kv 2000kVA Power Distribution Transformer
Experience superior power reliability with our 33/0.4kV 2000kVA Power Distribution Transformer, a cutting-edge solution designed for efficient medium-to-low voltage conversion in extensive electrical networks. This oil-immersed transformer incorporates high-permeability grain-oriented steel cores and optimized copper windings to deliver exceptional efficiency, low noise operation, and minimal energy losses even under full load conditions. The robust conservator-type tank filled with premium inhibited mineral oil ensures excellent cooling, high breakdown voltage, and protection against environmental factors. Engineered for long-term performance in challenging climates, it features anti-corrosion coatings, sealed bushings, and overload tolerance up to 150% for short durations. Fully compliant with IEC 60076, GB/T 1094, and other global standards, this 2000kVA distribution transformer supports sustainable energy infrastructure by reducing carbon footprint through enhanced efficiency and reliable power delivery to end users.
350kVA 10kV/0.4kV Three Phase Oil Immersed Power Distribution Transformer
Elevate your power distribution system with the advanced 350kVA 10kV/0.4kV Three Phase Oil Immersed Power Distribution Transformer, expertly crafted for optimal performance and energy savings in modern electrical infrastructures. This three-phase transformer employs cutting-edge amorphous metal cores and high-conductivity copper windings to significantly reduce core losses and achieve outstanding efficiency levels exceeding 98.5%. The fully sealed oil-immersed design with superior PCB-free mineral oil provides exceptional insulation, natural cooling, and resistance to overloads, ensuring stable operation in varied conditions. Equipped with low-noise technology and a durable corrugated tank for enhanced heat dissipation, it offers quiet performance and extended lifespan over 30 years. Meeting stringent standards such as IEC 60076 and EN 50588-1 for eco-friendly operation, this 350kVA transformer delivers reliable voltage transformation, minimizes downtime, and contributes to lower electricity costs for commercial and residential networks.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
35kV and 46kV 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 35kV and 46kV power transformers are trusted worldwide for efficiency, safety, and reliability.
Optimized for Medium-High Voltage
NPC Electric 35kV and 46kV Power Transformers are specifically optimized for medium-high voltage grids, offering precise and reliable voltage transformation critical for sub-transmission lines, large industrial loads, and renewable energy integration. Designed to handle the unique characteristics of these voltage levels, they ensure stable power flow and seamless integration within complex network architectures. This specialization guarantees peak performance and efficiency where these specific voltage classes are utilized. By choosing our medium-high voltage transformers, you ensure that your power infrastructure is equipped with tailor-made solutions for optimal operation and grid stability.
Exceptional Efficiency & Low Losses
We engineer our 35kV and 46kV Power Transformers for exceptional efficiency and ultra-low losses, contributing significantly to energy conservation and reduced operational expenditures. Utilizing premium-grade magnetic core materials and optimized winding designs, these transformers minimize no-load and load losses during voltage conversion. This translates directly into more power delivered to the load and less wasted heat. By deploying our high-efficiency power transformers, you not only enhance the overall performance and sustainability of your medium-high voltage network but also achieve substantial long-term cost savings, maximizing the return on your investment in power transformation.
Robust Reliability for Demanding Use
NPC Electric 35kV and 46kV Power Transformers are built with robust reliability in mind, designed for continuous and demanding operations in critical applications. Featuring durable oil-immersed construction with advanced cooling (ONAN/ONAF) and high-quality insulation, they ensure consistent performance even in harsh environmental conditions and under varying load profiles. Each transformer undergoes rigorous testing to guarantee superior dielectric strength and high short-circuit withstand capability. By selecting our reliable medium-high voltage transformers, you invest in long-term operational stability and uninterrupted power flow, safeguarding your industrial processes or sub-transmission infrastructure against unexpected disruptions.
Custom Solutions for Project Needs
We offer customized solutions for our 35kV and 46kV Power Transformers, tailoring each unit to your specific project requirements. Our engineering team collaborates closely to define optimal specifications for voltage ratios, impedance, tap changer configurations (OLTC/OCTC), cooling types, and specialized accessories. Whether you need a specific footprint for a restricted substation, enhanced noise reduction for urban areas, or features for smart grid integration, we deliver. By choosing our custom power transformers, you gain a precisely engineered solution that perfectly integrates with your existing electrical network, ensuring peak performance and future scalability for your unique medium-high voltage power transformation challenges.
Product Show
Explore the detailed design and practical application scenarios of power transformers
220kV Electrical Transformer
220kV transformer product show
350kV Power Transformer
350kV transformer product completed
Step Up Power Transformer
step up transformer is a power transformer
Step Up Transformer Font
step up transformer font view
Power Transformer Oil Temperature
transformer oil temperature design
750kV Power Transformer
750kV transformer design struture
Power Transfomer Oil Conservator
transfomer oil conservator design
Power Transformer Produce Line
worker produce power transformer
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 are 35kV and 46kV Power Transformers primarily used for?
35kV and 46kV Power Transformers are primarily used for voltage transformation in medium-high voltage grids, including sub-transmission networks, industrial power supply, and integration of renewable energy sources. They efficiently step up or step down voltage for optimal power delivery. -
What are the key advantages of your 35kV/46kV Power Transformers?
Our 35kV/46kV Power Transformers offer exceptional efficiency, low losses, robust reliability, and superior dielectric strength. They are designed for demanding, continuous operation, ensuring stable and high-quality power transformation in critical applications. -
Are your 35kV and 46kV Power Transformers customizable for specific projects?
Yes, we provide custom-engineered solutions for our 35kV and 46kV Power Transformers. We can tailor specifications such as voltage ratios, impedance, cooling types (e.g., ONAN, ONAF), and tap changer configurations (OLTC/OCTC) to meet your unique medium-high voltage power requirements. -
What cooling methods are typically used in your 35kV/46kV Power Transformers?
Our 35kV/46kV Power Transformers commonly utilize oil-immersed designs with advanced cooling methods such as ONAN (Oil Natural Air Natural) for natural heat dissipation, and ONAF (Oil Natural Air Forced) for enhanced cooling under heavier loads. These methods ensure efficient thermal management and reliable operation. -
How do your 35kV and 46kV Power Transformers contribute to grid stability?
Our 35kV and 46kV Power Transformers enhance grid stability through excellent voltage regulation and robust short-circuit withstand capability. Equipped with precise tap changers, they maintain stable output voltage, prevent disruptions, and ensure consistent power quality within the medium-high voltage network.
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