Transformers
Pad Mounted Transformer
Ensure secure and aesthetically pleasing power distribution with Pad Mounted Transformers. Designed for safe, reliable operation in underground residential, commercial, and light industrial applications, these transformers are a discreet alternative to pole-mounted units. Our Pad Mounted Transformers feature robust, tamper-resistant enclosures, typically in single-phase or three-phase configurations, housing efficient oil-filled cores. They offer superior safety, reduced visual impact, and excellent overload capability, ensuring stable voltage regulation and minimal energy loss. Trust our compliant and durable pad-mounted solutions for dependable, hidden power infrastructure in modern communities.
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.
300kVA Single Phase Pad Mounted Transformer
300kVA Single Phase Pad Mounted Transformer is a compact and efficient solution tailored for underground residential distribution (URD) systems and loop-feed applications. This fully sealed, oil-immersed transformer features high-efficiency electrical steel cores and robust aluminum or copper windings to deliver minimal losses and superior voltage regulation from high-voltage inputs like 13.8kV or 34.5kV down to 120/240V or 277/480V secondary. The environmentally friendly PCB-free dielectric fluid ensures excellent cooling and insulation while meeting ANSI/IEEE standards for loop or radial feed configurations. Ideal for urban and suburban settings, this pad-mounted transformer provides quiet operation, high overload capacity.
315kVA Single Phase Pad Mounted Transformer
315kVA Single Phase Pad Mounted Transformer, engineered for seamless integration into underground power distribution systems, particularly in residential and commercial loop-feed setups. This compact, oil-filled transformer utilizes advanced high-permeability steel cores and precision-engineered windings to offer exceptional energy efficiency, low operating temperatures, and reduced sound levels for discreet urban installations. Compliant with ANSI C57.12.38 and IEEE standards, this single-phase padmount transformer ensures reliable voltage conversion from primary voltages up to 34.5kV to standard secondary outputs like 120/240V, supporting radial or loop configurations with high short-term overload capability for growing communities.
630kVA Single Phase Pad Mounted Transformer
Elevate your underground power distribution with the robust 630kVA Single Phase Pad Mounted Transformer, specifically designed for high-demand residential and commercial loop-feed networks. This oil-immersed, single-phase unit incorporates premium electrical steel laminations and heavy-duty windings to minimize energy losses and provide outstanding thermal performance under continuous loads. Meeting ANSI C57.12.38 and IEEE C57.12.90 standards, this 630kVA padmount transformer delivers precise voltage transformation from primary levels up to 34.5kV to common secondary voltages like 120/240V or 277/480V, supporting extended overloads and long-term reliability in densely populated areas.
1000kVA Single Phase Pad Mounted Transformer
1000kVA Single Phase Pad Mounted Transformer, a high-capacity powerhouse optimized for extensive underground residential and commercial power distribution systems. This advanced oil-immersed transformer boasts ultra-efficient wound cores and premium windings to drastically cut operational losses while maintaining cool, stable performance even at peak demands. Fully aligned with ANSI C57.12.38, IEEE C57.12.00, and DOE efficiency requirements, this 1000kVA padmount delivers seamless step-down from primary voltages up to 34.5kV to versatile secondary outputs, empowering large-scale loop-feed or radial-feed networks with superior overload handling and minimal acoustic footprint.
1250kVA Single Phase Pad Mounted Transformer
The 1250kVA Single Phase Pad Mounted Transformer is a premium solution crafted for expansive underground electrical systems in high-growth areas. Housed in a secure, weatherproof cabinet with advanced dead-front or live-front configurations, it maximizes personnel safety and deters tampering in public spaces. Adhering to ANSI C57.12.25, IEEE C57.12.91, and energy efficiency mandates, this 1250kVA single-phase padmount excels in transforming primary voltages up to 34.5kV to flexible secondary levels, offering exceptional short-circuit strength and quiet operation for large-scale residential and commercial deployments.
1600kVA Single Phase Pad Mounted Transformer
The 1600kVA Single Phase Pad Mounted Transformer represents the pinnacle of high-capacity underground distribution technology, engineered to handle the most demanding residential and commercial loads with outstanding efficiency and longevity. Conforming to the latest ANSI C57.12.38, IEEE C57.12.00, and DOE 2016/2020 efficiency tiers, this 1600kVA single-phase padmount provides reliable step-down from primary voltages up to 46kV to versatile secondary configurations, supporting massive loop-feed networks with superior overload tolerance and virtually silent operation.
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.In-Depth Analysis
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
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 pad mounted transformers — from single phase to three phase solutions — are trusted worldwide for efficiency, safety, and reliability.
Pad Mounted 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 pad mounted transformers
Single Phase Pad Mounted Transformer
Single Phase Transformer Internal Structure
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
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
Mongolia Residential Area
CompletedEnsure the power safety of surrounding residents and meet daily work needs
Country：Mongolia
Model：75KV Single Phase Pad Mounted Transformer x 10
Venezuela Factory
Completed3-phase pad-mounted transformers provide safe, efficient, and reliable power distribution in Venezuela.
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 single phase pad mounted transformer and where is it commonly used?
A single phase pad mounted transformer is a compact distribution transformer typically used in residential areas and light commercial applications. It provides reliable voltage conversion for smaller loads, offering easy installation and safe operation. With its sealed enclosure and low maintenance design, it is ideal for neighborhoods, rural power systems, and facilities requiring efficient single phase power. -
What are the advantages of a three phase pad mounted transformer compared to a single phase unit?
A three phase pad mounted transformer delivers more efficient power distribution than a single phase unit, making it ideal for industrial plants, large commercial complexes, and utility networks. It provides balanced loads, higher capacity, and reduced energy losses. Compared to a single phase pad mounted transformer, the three phase transformer is better suited for demanding applications that require stable and continuous power supply. -
How does a three phase transformer improve efficiency in industrial applications?
A three phase transformer improves efficiency by delivering balanced power across three lines, reducing energy loss and improving system stability. In industrial applications, this ensures reliable operation of heavy machinery, motors, and equipment. By maintaining consistent voltage and supporting higher loads, a three phase pad mounted transformer minimizes downtime and enhances productivity, making it the preferred choice for large-scale power distribution. -
What are the standard pad mounted transformer sizes available?
Standard pad-mounted transformer sizes range from 15 kVA to 500 kVA for a single-phase pad-mounted transformer, and from 45 kVA up to several thousand kVA for a three-phase pad-mounted transformer. Choosing the right size depends on load capacity, installation site, and whether you need a 3-phase transformer for industrial use. -
Can I convert power from single phase to three phase using a transformer?
Yes, power can be converted from single phase to three phase with the help of specialized transformers or phase converters. While a single phase pad mounted transformer cannot directly create three phase power, certain systems, such as rotary or static converters, can enable this conversion. For industrial expansion, installing a three phase pad mounted transformer is often the most reliable long-term solution. -
How do I select the right pad mounted transformer size for my project?
Selecting the correct pad-mounted transformer size requires analyzing your load demand, voltage requirements, and future expansion needs. A single-phase pad-mounted transformer is best for residential or light commercial power, while a 3-phase transformer is recommended for industrial or high-capacity projects. Consulting with an expert ensures efficiency and cost-effectiveness.
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