Transformers
Three Phase Pad Mounted Transformer
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 is a high-performance, oil-immersed distribution transformer engineered for reliable outdoor installation on concrete pads. Compliant with ANSI/IEEE C57, DOE 2016 efficiency standards, and IEC guidelines, this 2.5 MVA unit delivers superior energy efficiency, low losses, and robust durability in demanding utility and industrial environments. Featuring a fully sealed, tamper-resistant enclosure with dead-front or live-front design options, it ensures maximum safety, minimal maintenance, and aesthetic integration in urban settings.
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 (5 MVA) is a robust, liquid-immersed compartmental distribution transformer built for high-capacity outdoor pad-mounted installations on concrete foundations. Compliant with updated DOE energy conservation standards (post-2024 amendments, targeting high efficiency levels around 99.68% for 5000 kVA units), ANSI/IEEE C57.12.00, C57.12.34, C57.12.90, and related CSA/IEC norms, this transformer delivers top-tier energy efficiency, minimal no-load and load losses, and exceptional reliability in utility-scale, industrial, and commercial power systems. The tamper-resistant, weatherproof steel enclosure (dead-front or live-front) with NEMA 3R-equivalent protection ensures safety, reduced maintenance, and seamless blending into urban, suburban, or remote environments.
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. Standard features include mineral oil or FR3 natural ester fluid (ONAN cooling), aluminum or copper windings, primary voltage 13.8kV (13800V Delta or 12470GrdY/7200 common), secondary 480Y/277V (or 208Y/120V, custom options), BIL 95kV HV / 30kV LV, impedance 5.75–7.0% (±7.5%), ±2×2.5% taps, radial-feed dead-front design with three high-voltage bushings (H1, H2, H3), bayonet fuses + partial-range current-limiting fuses, load-break switch (optional), lightning arresters, pressure relief valve, oil level/temperature gauges, and ANSI 70 gray (or Munsell green) finish.
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. Standard configuration includes mineral oil or FR3 natural ester fluid (ONAN cooling), aluminum or copper windings, primary voltage 6.9kV (6900V Delta or 6900GrdY/3985 common for loop-feed systems), secondary 480Y/277V (or 208Y/120V, 600Y/347V, custom), BIL 75kV HV / 30kV LV, impedance 5.75–7.5% (±7.5%), ±2×2.5% taps, loop-feed dead-front design with six high-voltage bushings (three per source: H1A/H2A/H3A and H1B/H2B/H3B), dual load-break switches (one per feed), bayonet fuses + partial-range current-limiting fuses (dual sets), lightning arresters, pressure relief valve, oil level/temperature gauges, and ANSI 70 gray (or Munsell green) finish.
167kVA Three Phase Pad Mounted Transformer
The 167kVA three phase pad mounted transformer delivers robust and efficient power distribution for medium-voltage applications. Built to exceed ANSI C57.12.34, IEEE, and DOE efficiency standards, this compartmental-type unit features a durable, tamper-resistant steel enclosure with dead-front or live-front high-voltage bushings, radial or loop feed configurations, and a 65°C average winding rise for optimal thermal performance. Primary voltages range from 4160V to 34500V (with common options like 12470GrdY/7200 or 13800V), while secondary voltages include 208Y/120V, 480Y/277V, or custom low-voltage setups.
630kVA Three Phase Pad Mounted Transformer
NPC ELECTRIC's 630kVA three phase pad mounted transformer is engineered for demanding medium-voltage distribution needs, delivering superior efficiency and durability in outdoor installations. Compliant with the latest DOE efficiency standards, ANSI C57.12.34, IEEE requirements, and UL listings, this compartmentalized unit features a robust steel enclosure with corrosion-resistant coating, high-voltage dead-front or live-front bushings, radial or loop feed setups, and a standard 65°C winding rise for excellent thermal management. Primary voltages span from 4160V to 34500V (including popular grounded wye options like 12470GrdY/7200V or 13800GrdY/7970V), while secondary voltages cover 208Y/120V, 480Y/277V, or custom low-voltage configurations up to 600V.In-Depth Analysis
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.
Multiple Protection Systems
IP65 protection grade design combines multiple protection measures such as anti-corrosion, anti-UV, anti-condensation and anti-small animal intrusion.
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.
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.
Safety Wiring System
Insulated protective cover and anti-misoperation design ensure personnel safety during installation and maintenance and reduce accident risks
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.
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
Secure & Safe Power for Public Areas
Minimal Visual Impact & Space Efficiency
Robust & Reliable Three-Phase Performance
Simplified Installation & Lower Maintenance
Product Show
Testing and Certification
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
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
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.