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.
45kVA Three Phase Pad Mounted Transformer
The 45 kVA pad-mounted transformer meets ANSI, CSA, NEMA, IEEE, and DOE standards. NPC Electric's 45 kVA pad-mounted transformers comply with DOE efficiency values and are UL listed. Based on specific technical requirements, the iron core can be designed as either a three-legged or five-legged assembly structure.
75kVA Three Phase Pad Mounted Transformer
The 75kVA pad-mounted transformer is tailored for utility customers in Canada, featuring a primary voltage of 25kV and a secondary voltage of 480/277V. It strictly adheres to local standards, including CSA C227.4 and CSA C802.1, ensuring optimal efficiency values. Notably, both the high and low-voltage windings are crafted from aluminum or copper.
150kVA Three Phase Pad Mounted Transformer
150kVA Three-Phase Pad Mounted Transformer is an efficient and reliable power transformer designed for applications in commercial, industrial, and residential areas. This transformer features a robust enclosure and protective design, enabling stable operation in outdoor environments and making it suitable for power systems with high load demands. With a high power capacity of 150kVA and three-phase power output, it ensures a stable voltage and smooth power supply for the equipment.
225kVA Three Phase Pad Mounted Transformer
The 225kVA three-phase pad transformer is an efficient and reliable power conversion device designed for commercial, industrial and distribution systems. With a high power capacity of 225kVA, the transformer is able to provide a stable three-phase power supply for large-scale equipment to meet high load requirements. Its rugged housing is made of weather-resistant materials and meets NEMA 3R standards, ensuring long-term stable operation in outdoor environments and preventing the influence of external factors such as water, dust and corrosion.
300kVA Three Phase Pad Mounted Transformer
The 300kVA three-phase pad transformer is an efficient and reliable power device designed for commercial, industrial and distribution systems. The transformer provides a high power capacity of 300kVA, which can provide a stable three-phase power supply for high-load equipment, ensuring efficient and smooth operation of the power system. Its sturdy housing adopts a protective design that meets the NEMA 3R standard, which can effectively resist the invasion of the external environment and is suitable for outdoor installation.
500kVA Three Phase Pad Mounted Transformer
The 500kVA three-phase pad transformer is an efficient and sturdy power equipment designed for commercial, industrial and distribution systems. It has a compact design and a protective casing that meets NEMA 3R or higher standards. It is suitable for various outdoor environments and can effectively resist external factors such as weather, dust and moisture. It can meet the power needs of different regions and has a variety of optional functions, such as load regulation and temperature control systems, to further improve its operating efficiency and safety. The built-in protection device can effectively prevent overload, short circuit and other faults to ensure the safe and reliable operation of the power system.
750kVA Three Phase Pad Mounted Transformer
The 750kVA three-phase pad transformer is an efficient and durable power equipment designed for commercial, industrial and distribution system applications. The transformer supports a variety of voltage configurations to meet the power needs of different regions, and is equipped with advanced protection systems such as overload protection, short-circuit protection and temperature control devices to ensure the safe operation of the equipment under high load and extreme environments.
1000kVA Three Phase Pad Mounted Transformer
The 1000kVA three-phase pad transformer is an efficient and reliable power transformer designed for high-load applications such as large commercial, industrial and distribution systems. The transformer has a high power capacity of 1000kVA and can stably provide continuous power supply for three-phase power systems to meet large-scale power needs. With a rugged and durable casing and protective design, it is suitable for operation in various outdoor environments and can effectively resist adverse weather conditions.
1500kVA Three Phase Pad Mounted Transformer
NPC ELECTRIC's 1500kVA Three Phase Pad Mounted transformer is designed with high-quality silicon steel sheets and insulating oil, in compliance with international standards such as IEC and ANSI, ensuring efficient and stable operation. It is suitable for a variety of scenarios such as urban power distribution, residential areas, commercial parks and industrial facilities. Whether it is ring network power supply or radial power supply, it can be flexibly applied to help achieve efficient and intelligent power transmission and distribution solutions.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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