Transformers
Three Phase Pad Mounted Transformer
NPC Three-phase pad-mounted transformers, for use on underground power distribution systems, are best suited for commercial applications in public access areas and where underground service is required. These transformers meet modern design requirements for flexibility and provide a visually pleasing installation. Construction allows installation in locations accessible to the general public without the need for protective fencing or vaults. These units are ideally suited for apartment buildings, schools, hospitals, shopping centers, commercial buildings, or industrial sites. Standard, liquid-filled sizes range from 45–7500 kVA, with primary ratings from 2.4–34.5 kV.
2000kVA Three Phase Pad Mounted Transformer
2000kVA Three Phase Pad Mounted transformer adopts a fully sealed oil-immersed design, which complies with international standards such as IEC, ANSI and GB. It has the characteristics of high efficiency, low loss and strong weather resistance. It is widely used in industrial parks, commercial complexes, power companies and new energy projects, and is particularly suitable for medium and large load environments that require both stable power supply and energy saving.
2500kVA Three Phase Pad Mounted Transformer
NPC ELECTRIC's 2500kVA Three Phase Pad Mounted transformer adopts a fully sealed and fully insulated structure, which complies with international standards such as IEC 60076 and IEEE C57, and has the advantages of high efficiency, energy saving, and stable operation. It is widely used in industrial parks, large commercial centers, new energy projects, data centers and other scenarios with high requirements for power supply reliability. The product is suitable for 12kV to 35kV distribution systems and meets the needs of the global mainstream power market.
3000kVA Three Phase Pad Mounted Transformer
NPC ELECTRIC's 3000kVA Three Phase Pad Mounted transformer complies with international standards such as IEC and IEEE. It adopts a fully sealed and fully insulated design and has excellent overload capacity and safety performance. It is widely used in industrial parks, commercial complexes, new energy power stations and other scenarios, and is suitable for outdoor ground installation. The product has a compact structure, reliable operation, and easy maintenance, making it an ideal choice for modern power distribution systems.
4000kVA Three Phase Pad Mounted Transformer
NPC ELECTRIC's 4000kVA Three Phase Pad Mounted transformer is made of high-performance silicon steel sheets and high-quality insulating oil. It complies with international standards such as IEC 60076 and ANSI C57. It has excellent electrical performance and weather resistance. It is suitable for large industrial parks, urban distribution stations, and new energy power generation systems. It is an ideal choice for high-reliability and high-efficiency power distribution.
5000kVA Three Phase Pad Mounted Transformer
NPC ELECTRIC's 5000kVA Three Phase Pad Mounted transformer adopts internationally advanced design and manufacturing standards, complies with international power industry specifications such as IEC and ANSI, and is widely used in power distribution in urban distribution networks, industrial parks, large shopping malls and other places. The transformer has high efficiency and durability, can operate stably in harsh environments, and ensure continuous and safe power supply. Its compact design and reliable protection mechanism make it an ideal choice for medium and high voltage distribution systems.
1500kVA Radial Feed Pad Mounted transformer DOE 2016
The 1500kVA Radial Feed Pad-Mounted Transformer is designed for reliable medium-voltage power distribution in utility, commercial, and renewable energy (solar) applications. Engineered to comply with IEEE C57.12.34, C57.12.24, C57.12.00, and DOE 2016 efficiency standards, this pad-mounted transformer is ideal for step-down applications from 12.47kV to 480/277V. Built with aluminum windings, ONAN cooling, and NEMA standard low-voltage spade terminals, this unit is specifically customized to meet the requirements of projects in the Dominican Republic, including solar infrastructure.
2000kVA Loop Feed 6.9kV Pad Mounted transformer
The 2000kVA Loop Feed 6.9kV Pad-Mounted Transformer is designed and manufactured to meet IEEE C57.12.34, IEEE C57.12.24, and IEEE C57.12.00 standards, as well as ASTM D6871 oil test requirements. It features a dead-front loop-feed design, aluminum windings, primary voltage of 6.9kV, and secondary voltage of 480/277V with ±2×2.5% HV taps for voltage adjustment. This transformer uses NEMA-standard spade-type low-voltage terminals with 12 holes, offers ONAN cooling, and is filled with mineral oil for reliable insulation and thermal performance. Ideal for substation projects in demanding environments, it is UL certified and built for step-down operation with a 95/30kV BIL rating.In-Depth Analysis
Three Phase Pad Mounted 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
98%
Environmental Adaptability Analysis
Three Phase Pad Mounted 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 3-phase pad-mounted transformers are trusted worldwide for efficiency, safety, and reliability.
3 Phase Transformers Manufacturer
We provide a comprehensive selection of pad mounted transformers, including both single phase pad mounted transformers and three phase pad mounted transformers, designed to meet the power needs of residential, commercial, and industrial users.
Our single phase units are perfect for small communities and light-load distribution, while our 3 phase transformers ensure efficient performance for larger, more demanding networks. Whether you need a compact solution for limited space or a high-capacity unit for industrial facilities, our diverse product line guarantees the right fit for your project. With flexible voltage ratings and sizes, we deliver reliable power wherever it’s needed.
Our single phase units are perfect for small communities and light-load distribution, while our 3 phase transformers ensure efficient performance for larger, more demanding networks. Whether you need a compact solution for limited space or a high-capacity unit for industrial facilities, our diverse product line guarantees the right fit for your project. With flexible voltage ratings and sizes, we deliver reliable power wherever it’s needed.
Pad Mounted Transformer Size Options
We offer pad mounted transformers in a wide range of sizes to match diverse project requirements. From compact single phase pad mounted transformers ideal for residential neighborhoods to large three phase pad mounted transformers designed for industrial and utility networks, every size ensures optimized performance.
Choosing the right size of a 3 phase transformer helps balance efficiency, cost, and space utilization. With standard and customizable options, our transformers deliver reliable power while fitting seamlessly into any installation environment.
Choosing the right size of a 3 phase transformer helps balance efficiency, cost, and space utilization. With standard and customizable options, our transformers deliver reliable power while fitting seamlessly into any installation environment.
Safe, Durable & Low Maintenance
Safety and durability are at the core of our pad mounted transformer design. Each unit is housed in a sealed, tamper-proof enclosure to protect against environmental conditions, vandalism, and accidental contact. Our single phase pad mounted transformers and three phase pad mounted transformers feature advanced insulation and cooling systems, ensuring smooth operation even under heavy loads.
With built-in protection mechanisms, every 3 phase transformer minimizes risks while extending service life. Thanks to their robust design, our transformers require minimal maintenance, helping customers save on costs and downtime. Invest in a solution that prioritizes safety, resilience, and long-term value.
With built-in protection mechanisms, every 3 phase transformer minimizes risks while extending service life. Thanks to their robust design, our transformers require minimal maintenance, helping customers save on costs and downtime. Invest in a solution that prioritizes safety, resilience, and long-term value.
Energy-Saving and Cost-Effective
Our pad mounted transformers are not only reliable but also highly energy-efficient, helping customers lower operational costs and reduce power losses. The single phase pad mounted transformer is designed for smaller loads, delivering consistent power with minimal energy waste, while the three phase pad mounted transformer ensures efficient power flow in large-scale commercial and industrial networks.
Every 3 phase transformer is optimized to maximize performance while keeping life-cycle costs low. With advanced design and eco-friendly features, our transformers provide long-term savings and support sustainable energy solutions for diverse applications.
Every 3 phase transformer is optimized to maximize performance while keeping life-cycle costs low. With advanced design and eco-friendly features, our transformers provide long-term savings and support sustainable energy solutions for diverse applications.
Product Show
Explore the detailed design and practical application scenarios of three phase pad mounted transformers
Three Phase Transformer Testing
Three Phase Pad Mounted Transformer Testing
3 Phase Pad Mounted Transformer
Three Phase Transformer Internal Structure
500kVA 3-phase Transformer
500kVA 3-phase Pad Mounted Transformer
4 Position Load Break Switch
Transformer 4 Position Load Break Switch
75kVA Three Phase Transformer
75kVA High Volgate Step Up Transformer
Transformer Load Breaker Insert
High voltage elbow cable connector
3 Phase Transformer Installation
3 Phase Transformer On-site Assembly
45kVA 3 Phase Step Down Transformer
45 kVA - 34.5/0.48/0.277 kV 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
Pad Mounted 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 Residential Area
CompletedEnsure the power safety of surrounding residents and meet daily work needs
Country：Dominican
Model：75kVA & 45kvA 3 Phase Pad Mounted Transformer x 10
Venezuela Factory
Completed3-phase pad-mounted transformers provide safe, efficient, and reliable power distribution in Dominican .
Country：Venezuela
Model：500kVA Three Phase Pad Mounted Transformer x 7
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 3 phase pad mounted transformer and how does it work?
A 3-phase pad-mounted transformer is a ground-mounted distribution unit that converts medium-voltage electricity into lower voltages for end use. Unlike single-phase models, a three-phase pad-mounted transformer provides balanced three-phase power, making it essential for large commercial and industrial applications where a stable and efficient energy supply is required. -
What are the common applications of a three phase pad mounted transformer?
A three-phase pad-mounted transformer is widely used in industrial plants, commercial complexes, and utility networks. It supports heavy machinery, motors, and large-scale equipment that require consistent three-phase power. Compared with single-phase units, the 3-phase transformer is designed for high-demand environments where reliability and performance are critical. -
How do I choose the right size for a 3 phase pad mounted transformer?
Selecting the proper size of a 3-phase pad-mounted transformer depends on your load requirements, voltage levels, and installation environment. Considering pad-mounted transformer sizes ensures that your system runs efficiently without overloading. Choosing the right capacity helps reduce energy loss, improve system stability, and extend the lifespan of your power equipment. -
What are the advantages of using a 3 phase transformer over a single phase transformer?
A 3-phase transformer provides greater efficiency, balanced power delivery, and higher capacity compared to a single-phase transformer. In distribution networks, the three-phase pad-mounted transformer supports larger loads, reduces energy losses, and ensures stable voltage. This makes it the preferred option for industries, commercial facilities, and utility providers. -
Are three phase pad mounted transformers suitable for industrial power distribution?
Yes, three-phase pad-mounted transformers are ideal for industrial applications. As a type of industrial transformer, they provide the high capacity and reliable performance required for factories, manufacturing plants, and large facilities. By delivering balanced three-phase power, a 3-phase pad-mounted transformer ensures smooth operation of heavy-duty equipment and reduces downtime.
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