Transformers
Solar Transformer
Maximize efficiency and reliability for photovoltaic (PV) systems with our specialized Solar Transformers. Engineered to integrate seamlessly into solar power plants and PV farms, these transformers are crucial for stepping up voltage from inverters to the grid, or stepping down for internal auxiliary use. Our Solar Transformers are optimized for the unique demands of renewable energy environments, offering superior thermal performance, enhanced efficiency for fluctuating loads, and robust protection against environmental factors. Available in various kVA/MVA ratings and configurations (e.g., central or string inverter integration), they ensure stable, low-loss power delivery from solar arrays to the utility grid.
Solar Transformer
NPC ELECTRIC specializes in the design and production of high-performance Solar Step-up Transformers for photovoltaic (PV) applications, offering a wide range of transformer types to meet diverse installation and operational needs. Our product portfolio includes Dry Type Transformers for indoor or fire-sensitive environments, Pad Mounted Transformers for compact and secure outdoor use, Oil-Immersed Transformers known for their reliability and thermal performance, and Prefabricated Substation Transformers that integrate seamlessly into modular substation systems. Each solution is engineered to support efficient voltage step-up from inverter output to medium voltage grid levels, ensuring safe and stable energy transmission. In addition to standard models, NPC ELECTRIC provides customized solutions, including dual-split (Double-Split Winding) transformer designs that are particularly advantageous for high-capacity systems, difficult logistics, or site limitations, enabling easier transport and installation without compromising performance. Our transformers are compatible with both centralized and string inverter configurations and are manufactured to comply with international standards such as IEC, ANSI, and IEEE. Backed by advanced manufacturing capabilities and strict quality control.
33kV 35kV Solar Power Transformer
NPC Electric 33kV 35kV Solar Power Transformer is a specialized solution engineered to bridge the gap between solar inverters and the high-voltage utility grid. Unlike standard distribution units, these transformers are optimized to handle the pulsed DC-to-AC waveforms generated by modern PV inverters. Utilizing high-permeability magnetic cores and oxygen-free copper windings, they significantly reduce "No-Load" losses during non-sunlight hours, maximizing your project's Levelized Cost of Energy (LCOE). The robust tank design features enhanced heat dissipation fins, ensuring stable operation even under peak solar radiation in desert or tropical climates.
11kV to 0.8kV 1250 kVA Solar Power Transformer - Copper Wound High Efficiency PV Transformer
The 1250 kVA Solar Power Step-Up Transformer is a high-performance, inverter-duty solution specifically engineered for utility-scale photovoltaic (PV) installations. Designed to interface directly with 800V central or string inverters, this unit efficiently elevates voltage to 11kV for medium-voltage distribution. Unlike standard distribution transformers, our 1250 kVA model features 100% high-purity oxygen-free copper windings, offering superior thermal conductivity and lower losses. The core is constructed from laser-scribed, grain-oriented silicon steel to minimize eddy current losses, ensuring maximum energy harvest even during low-irradiance periods. With advanced harmonic mitigation technology, it withstands the high-frequency switching stresses typical of modern solar power conversion.
11kV – 33kV Solar Inverter Duty Transformer Up to 20MVA
The Reliable Solar Inverter Duty Transformer for Renewable Energy applications is engineered to support modern photovoltaic systems with capacities up to 20MVA and voltage levels from 11kV to 33kV. Designed to interface directly with solar inverters, this transformer ensures stable voltage conversion, excellent harmonic tolerance, and consistent performance under fluctuating generation conditions typical of renewable energy plants. The transformer adopts a robust oil-immersed structure with optimized thermal management to handle continuous load cycling and high ambient temperatures. Advanced magnetic core materials reduce no-load losses, while reinforced insulation systems improve dielectric strength and operational lifespan.
2000kVA 35kV Wind Turbine Step-Up Transformer for Onshore Wind Farms
The Wind Turbine Step-Up Transformer 2000kVA 35kV is purpose-built for onshore wind farms, enabling efficient voltage conversion from wind turbine generators to medium-voltage collection networks. Designed to operate reliably under fluctuating wind loads and harsh outdoor conditions, this transformer ensures stable power transmission and reduced energy losses across wind power systems. The oil-immersed insulation structure provides excellent thermal stability and long service life, while the optimized magnetic core minimizes no-load losses and acoustic noise. High-quality windings and reinforced insulation withstand frequent load variations caused by changing wind speeds.
100kVA–20MVA Solar Step-Up Transformer for PV Power Plants
The 100kVA–20MVA Solar Step-Up Transformer is engineered specifically for modern solar power plants, providing efficient voltage elevation from inverter output levels to medium- or high-voltage grid requirements. Designed for continuous operation under fluctuating solar loads, this transformer ensures stable power transmission, low energy losses, and high operational reliability. Featuring a robust oil-immersed insulation system, the transformer delivers excellent thermal performance and long service life even in harsh outdoor environments. High-quality copper or aluminum windings, optimized magnetic core design, and advanced cooling configurations contribute to superior efficiency and reduced lifecycle costs. The transformer complies with IEC and IEEE standards, making it suitable for utility-scale photovoltaic projects, distributed generation systems, and renewable energy substations. With flexible capacity coverage from 100kVA to 20MVA, it adapts seamlessly to small, medium, and large solar installations.In-Depth Analysis
Solar 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
Solar 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 solar transformers are trusted worldwide for efficiency, safety, and reliability.
Solar Transformers Manufacturer
NPC Electric is a leading solar transformers manufacturer dedicated to providing reliable and energy-efficient solutions for modern solar power systems. Our solar transformers, including step up transformers for solar plants and three phase solar transformers, are designed to convert and transmit electricity generated from photovoltaic (PV) panels to the grid with maximum efficiency. Each solar power transformer ensures stable voltage, low losses, and long-term reliability under varying load and environmental conditions. As a trusted renewable energy transformer manufacturer, NPC Electric follows IEC and IEEE standards to guarantee global compatibility and superior performance. From solar substation transformers to customized medium voltage and high voltage solar transformers, our products play a key role in supporting clean energy generation and sustainable grid infrastructure worldwide.
Robust Design for Outdoor PV Environments
We design our Solar Transformers with a robust construction, specifically tailored for the demanding outdoor conditions of PV environments. Whether oil-immersed or dry-type, these transformers are built to withstand extreme temperatures, dust, humidity, and varying weather patterns prevalent in solar farms. Their durable enclosures and protective coatings ensure long-term operational integrity and minimize the need for frequent maintenance. By choosing our durable solar transformers, you ensure uninterrupted performance and extended lifespan for your critical equipment, safeguarding your investment in solar power generation against environmental challenges.
Seamless Grid Integration for Renewables
Our Solar Transformers facilitate seamless grid integration for your renewable energy projects. They are precisely matched with solar inverters to efficiently step up the low/medium voltage output to the higher voltages required by the utility grid. This careful design ensures stable power injection, minimizes grid disturbances, and complies with all relevant grid codes and interconnection standards. By deploying our grid-compatible solar transformers, you streamline the connection process, enhance the reliability of your solar power plant, and contribute effectively to a diversified and sustainable energy portfolio, making your clean energy contribution count.
Optimized for Solar Inverter Compatibility
Our Solar Transformers are optimized for solar inverter compatibility, ensuring perfect synergy between your inverters and the grid connection. We design our transformers to closely match the electrical characteristics and harmonic profiles of leading solar inverters, minimizing reactive power losses and preventing potential resonance issues. This careful harmonization ensures stable operation of the entire PV system, maximizing power quality and overall system efficiency. By choosing our inverter-optimized solar transformers, you achieve a cohesive and high-performing solar energy system, enhancing the lifespan of both your inverters and the transformer itself, guaranteeing peak performance for solar power generation.
Product Show
Explore the detailed design and practical application scenarios of solar transformers
Solar Transformer Font View
transformer product font view show
75kVA Solar Transformer
75kva transformer internal structure
Solar Transformer Outdoor
transformer open the door structure
Solar Transformer Internal Design
transformer internal connector design
Solar Transformer Switchgear
transformer switchgear show
Solar Transformer Exterior Design
Different transformers have different appearances
Transformer Switchgear Close-up design
transfomer switchgear close-up design
Solar Transformer Switchgear Installation
transformer switchgear installation
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
Solar transformers have been successfully applied in many projects and have been highly praised by customers.
Dominican Residential Area
CompletedProvide stable and reliable power conversion solutions for the residential area to meet diverse production needs.
Country：Dominican
Model：75kA Solar Dry Transformer x 5
Philippines Data Center
CompletedEnsure the power safety of surrounding residents and meet daily work needs
Country：Philippines
Model：220kVA Solar Transformer x 6
USA Factory
CompletedNPC transformers provide safe, efficient, and reliable power distribution in the USA.
Country：USA
Model：450kVA Solar 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 a solar transformer?
A solar transformer is a type of power transformer specifically designed for solar energy systems. It connects the output of solar inverters to the electrical grid, ensuring safe and efficient voltage conversion. Typically functioning as a step up transformer for solar plants, it increases the low voltage from photovoltaic (PV) panels to the required grid transmission level. NPC Electric’s solar power transformers are engineered for high efficiency, low losses, and long service life in renewable energy applications. -
What is the difference between solar transformer and normal transformer?
The main difference between a solar transformer and a normal power transformer lies in design and operating conditions. A solar transformer is built to handle DC-to-AC conversion from inverters, variable loading, and higher harmonic distortion typical in solar applications. In contrast, a conventional electrical transformer operates under stable grid conditions. NPC Electric designs solar transformers with enhanced insulation, temperature control, and anti-corrosion systems for outdoor solar farms and harsh environments. -
What is the difference between transformer and inverter duty transformer?
A standard transformer transfers AC power between circuits, while an inverter duty transformer is specifically engineered to work with power inverters in solar and wind energy systems. It can withstand high harmonic content, frequent voltage fluctuations, and thermal stress caused by inverter switching. NPC Electric’s inverter duty transformers feature reinforced insulation and optimized cooling for reliable performance in renewable energy networks. -
What is a solar duty transformer?
A solar duty transformer is a specialized solar power transformer used to connect photovoltaic (PV) inverters to the grid. Designed for outdoor or substation installation, it serves as a step up transformer that boosts inverter output voltage for grid transmission. NPC Electric’s solar duty transformers are built to manage harmonic distortion, high ambient temperatures, and variable solar load cycles. Each unit complies with IEC and IEEE standards, ensuring superior safety, reliability, and performance in modern solar power plants. -
Are transformers used in renewable energy?
Yes, transformers are essential in renewable energy systems such as solar and wind power plants. They play a critical role in converting and transmitting electricity generated from renewable sources to the main grid. A solar transformer or wind power transformer typically functions as a step up transformer, increasing voltage from inverters for efficient long-distance transmission. In solar energy systems, inverter duty transformers also provide electrical isolation and manage harmonic loads. NPC Electric designs advanced renewable energy transformers that meet global IEC and IEEE standards, ensuring high efficiency, low losses, and long-term reliability in clean energy transmission. These transformers support sustainable power generation and help integrate green energy into modern grids worldwide.
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