Transformers
Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC utilizes state-of-the-art technology, supported by ISO-9001 certified processes and quality assurance programs, to design and manufacture a complete line of single-phase pole-type distribution transformers for utility overhead systems. These transformers, known for their high reliability, are available in a wide range of ratings and accessory combinations, ensuring that you receive cost-effective products perfectly matched to your system requirements.The transformer is capable of operating at a voltage level of up to 34.5 kV, with a maximum power capacity of 167kVA.
5kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC has been focusing on the production of 5kVA Conventional Type Single Phase Pole Mounted transformer for decades, complying with international standards such as IEC 60076, ISO 9001, IEEE C57.12.00, etc. to ensure its safety, performance, and reliability. NPC ELECTRIC’s 5kVA conventional single-phase pole-mounted transformer is a small power transformer equipment, usually installed on power poles. This transformer is widely used in daily life and small industrial fields for its reliability and efficient power conversion capabilities, ensuring a stable and safe power supply. The transforming primary voltages from 2.4kV to 34.5kV (such as 12470Y/7200, 13200Y/7620, or 14400GrdY/8320) to secondary outputs like 120/240V split-phase or 277V. Featuring an interlaced core for surge resistance, high-grade silicon steel, and aluminum or copper windings.
10kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC specializes in designing and manufacturing 10 kVA single-phase pole-mounted transformers that comply with international standards, including IEEE C57.12.00, IEEE C57.12.20, DOE-2016 Efficiency, CSA C2.1 & C2.2, and CSA C802.1. Our unwavering commitment to excellence drives us to provide tailored solutions, ensuring that each transformer aligns precisely with your unique technical requirements. Regardless of the voltage level or operating environment, you can trust NPC ELECTRIC to deliver the ideal solution to meet your specific needs. Your satisfaction and the reliability of our transformers remain central to our dedication to quality. The 10kVA conventional single phase pole mounted transformer serves as an economical, reliable option for low-capacity overhead power distribution, converting primary voltages ranging from 2.4kV to 34.5kV (including common grounded wye configurations like 12470GrdY/7200, 24940GrdY/14400, or 13200Y/7620) to secondary levels such as 120/240V split-phase or 240V.
15kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC has been focusing on the production of 15kVA Conventional Type Single Phase pole Mounted transformer for more than 20 years, which complies with IEC 60076, ANSI C57.12.20, EN 50464-1, ISO 9001 standards. NPC ELECTRIC'S transformer adopts oil-immersed self-cooling design, which can efficiently and stably convert high-voltage electricity into low-voltage electricity suitable for users. It is mainly used for power supply needs of rural areas, end of the power grid and small industrial users. Typical features include mineral oil insulation (ONAN cooling), aluminum or copper windings, primary voltages from 2.4kV to 34.5kV (e.g., 7200/12470GrdY, 7620/13200GrdY, 12470GrdY/7200, 24900GrdY/14400), secondary voltages 120/240V or 240/120V split-phase, BIL ratings 60-150kV on HV and 30kV on LV, impedance around 2-3.5%, ±2×2.5% taps, conventional or CSP (completely self-protected) configurations with internal fuses, arresters, and weak-link protection, pressure relief valve, oil sight gauge, and ANSI 70 gray tank finish.
25kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC'S 25kVA Conventional Type Single Phase pole Mounted transformer are designed for servicing residential overhead distribution loads. They are also suitable for light commercial loads, industrial lighting and diversified power applications. These transformers are designed for the application conditions normally encountered on electric utility power distribution systems. Types CSP, CP, SP and S are all available. ISO 9001: 2008 Certified. Typical specifications include mineral oil insulation (ONAN cooling), aluminum or copper windings, primary voltages 2.4 kV–34.5 kV grounded wye or delta (most common: 7200/12470GrdY, 7620/13200GrdY, 12470GrdY/7200, 24940GrdY/14400, 34500GrdY/19920), secondary 120/240 V or 240/120 V split-phase, BIL ratings 95–150 kV HV / 30 kV LV, impedance typically 2.0–4.0%, ±2×2.5% or 5-position tap changer, conventional or completely self-protected (CSP) versions with internal primary fuses, external weak-link cutout, lightning arresters, pressure relief device, oil sight gauge, and standard ANSI 70 gray tank finish. Efficiency usually reaches 98.90%–99.10%+, with low sound level and corrosion-resistant design for long outdoor service life.
37.5kVA Conventional Type Single Phase Pole Mounted Transformer
37.5kVA Conventional Type Single Phase pole Mounted transformer has a rated capacity range from 10 kVA to 333 kVA, and complies with ANSI, IEEE, CSA, IEC60076 and other standards, ensuring safety, stability, and efficiency, allowing you to reduce operating costs. Our products have been widely exported to markets such as North America, Central and South America, and Southeast Asia. With rich experience, we provide comprehensive technical support and services. Key specifications include mineral oil insulation (ONAN cooling), aluminum or copper windings, primary voltages 2.4kV–34.5kV grounded wye or delta (common: 7200/12470GrdY, 7620/13200GrdY, 12470GrdY/7200, 24940GrdY/14400, 34500GrdY/19920), secondary 120/240V or 240/120V split-phase, BIL ratings 95–150kV HV / 30kV LV, impedance typically 2.0–4.0%, ±2×2.5% or 5-position tap changer, conventional or CSP (completely self-protected) configurations with internal fuses, lightning arresters, weak-link protection, pressure relief valve, oil sight gauge, and standard ANSI 70 gray tank finish. Efficiency typically reaches 99.01–99.05%+, with low sound levels and corrosion-resistant features for long-term outdoor durability.
50kVA Conventional Type Single Phase Pole Mounted Transformer
The 50kVA Conventional Type Single Phase pole Mounted transformer produced by NPC ELECTRIC has a rated capacity ranging from 10kVA to 333kVA, meeting the standards of ANSI/IEEE C57, IEC60076, etc. Its main function is to convert high-voltage power (such as 10kV, 11kV, etc.) into low-voltage power (such as 220V, 240V) through the transformer for use in homes, shops, industrial equipment, etc. It is suitable for residential areas, commercial areas, rural power grids, agricultural facilities and small industrial power supply. Standard features encompass mineral oil insulation (ONAN cooling), aluminum or copper windings, primary voltages 2.4kV–34.5kV grounded wye or delta (common: 7200/12470GrdY, 7620/13200GrdY, 12470GrdY/7200, 24940GrdY/14400, 34500GrdY/19920), secondary 120/240V or 240/120V split-phase, BIL ratings 95–150kV HV / 30kV LV, impedance typically 2.0–4.0%, ±2×2.5% or 5-position tap changer, conventional or CSP (completely self-protected) configurations with internal fuses, lightning arresters, weak-link protection, pressure relief valve, oil sight gauge, and ANSI 70 gray tank finish. Efficiency typically reaches 99.11%+, with low sound levels and corrosion-resistant hardware for extended outdoor service.
75kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC has been specialized in manufacturing 75kVA Conventional Type Single Phase pole Mounted transformer for more than 20 years, which complies with international standards such as ANSI/IEEE C57, IEC60076 and other standards. Its main function is to convert high voltage electricity (such as 11kV, 13.8kV, etc.) into low voltage electricity (such as 120V/240V), providing stable and reliable power supply to end users. It is suitable for residential, commercial, agricultural and small industrial loads. Typical specifications include mineral oil insulation (ONAN cooling), aluminum or copper windings, primary voltages 2.4kV–34.5kV grounded wye or delta (common: 7200/12470GrdY, 7620/13200GrdY, 12470GrdY/7200, 24940GrdY/14400, 34500GrdY/19920), secondary 120/240V or 240/120V split-phase, BIL ratings 95–150kV HV / 30kV LV, impedance typically 2.0–4.0%, ±2×2.5% or 5-position tap changer, conventional or CSP (completely self-protected) configurations with internal fuses, lightning arresters, weak-link protection, pressure relief valve, oil sight gauge, and ANSI 70 gray tank finish. Efficiency typically reaches 99.17–99.19% at 50% load per DOE levels, with low sound levels and corrosion-resistant hardware for extended outdoor service.
100kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC has been specialized in manufacturing 100kVA Single Phase pole Mounted transformer for more than 20 years, which complies with international standards such as ANSI/IEEE C57, IEC60076 and other standards. Its main function is to convert high voltage electricity (such as 11kV, 13.8kV, etc.) into low voltage electricity (such as 120V/240V), providing stable and reliable power supply to end users. It is suitable for residential, commercial, agricultural and small industrial loads. Standard features include mineral oil insulation (ONAN cooling), aluminum or copper windings, primary voltages 2.4kV–34.5kV grounded wye or delta (common: 7200/12470GrdY, 7620/13200GrdY, 12470GrdY/7200, 24940GrdY/14400, 34500GrdY/19920), secondary 120/240V or 240/120V split-phase (options for 277V or custom), BIL ratings 95–150kV HV / 30kV LV, impedance typically 2.0–4.5%, ±2×2.5% or 5-position tap changer, conventional or CSP (completely self-protected) configurations with internal fuses, lightning arresters, weak-link protection, pressure relief valve, oil sight gauge, and ANSI 70 gray tank finish. Efficiency typically reaches 99.25–99.29% at 50% load per DOE levels (with 2029 amendments targeting further reductions in losses for units >100 kVA), with low sound levels and corrosion-resistant hardware for extended outdoor service.
167kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC'S 167kVA Single Phase pole Mounted transformer is a high capacity single phase distribution transformer designed for medium to high load distribution systems. It is mainly used in residential, commercial, agricultural and light industrial applications to provide stable single phase power to ensure reliable operation of user-side equipment. It complies with international standards such as ANSI/IEEE C57, IEC60076 and other standards to ensure its high quality and stability. Standard features include mineral oil insulation (ONAN cooling), aluminum or copper windings, primary voltages 2.4kV–34.5kV grounded wye or delta (common: 7200/12470GrdY, 7620/13200GrdY, 12470GrdY/7200, 24940GrdY/14400, 34500GrdY/19920), secondary 120/240V or 240/120V split-phase (options for 277V/480V or custom), BIL ratings 95–150kV HV / 30kV LV, impedance typically 1.5–4.5%, ±2×2.5% or 5-position tap changer, conventional or CSP (completely self-protected) configurations with internal fuses, lightning arresters, weak-link protection, pressure relief valve, oil sight gauge, and ANSI 70 gray tank finish. Efficiency typically reaches 99.33% at 50% load per DOE levels (with 2029 amendments targeting further reductions for units ≥100 kVA), with low sound levels and corrosion-resistant hardware for extended outdoor service.In-Depth Analysis
Pole 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
96%
Environmental Adaptability Analysis
Pole 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 Pole mounted transformers are trusted worldwide for efficiency, safety, and reliability.
Proven Reliability & Decades of Performance
NPC Electric Conventional Single Phase Pole Mounted Transformers offer proven reliability, backed by decades of field performance as the backbone of single-phase power distribution. Built on time-tested designs, these oil-immersed transformers consistently deliver stable voltage and efficient operation in a wide array of climates and conditions. Their robust construction and straightforward design minimize potential points of failure, ensuring a long operational lifespan with minimal intervention. By choosing our reliable pole-mounted units, utilities invest in a trusted technology that guarantees a continuous, high-quality power supply to residential homes and rural areas, ensuring dependable service for communities.
Highly Cost-Effective & Easy to Install
NPC Electric Conventional Single Phase Pole Mounted Transformers are a highly cost-effective solution with a reputation for ease of installation. Their standardized design and well-understood mounting procedures significantly reduce labor costs and project timelines compared to more complex alternatives. This makes them ideal for rapid deployment in new residential areas or for efficient replacement in existing overhead distribution networks. The initial investment is typically lower, and their robust construction ensures reduced maintenance expenditures over time. By deploying our economical single-phase transformers, utilities optimize budgets while ensuring widespread and reliable power access.
Efficient Energy Conversion with Low Losses
Our Conventional Single Phase Pole Mounted Transformers are engineered for efficient energy conversion with low losses, contributing to a more sustainable and economical power grid. Optimized core designs and high-quality windings minimize both no-load and load losses during the voltage step-down process. This superior efficiency ensures that more of the generated electricity reaches the end-user, reducing wasted energy and lowering operational costs for utilities. By investing in our energy-efficient single-phase transformers, you enhance the overall performance of your power distribution network while minimizing environmental impact and maximizing the value of every unit of electricity.
Robust & Weather-Resistant Construction
NPC Electric Conventional Single Phase Pole Mounted Transformers feature robust and weather-resistant construction, ensuring dependable performance in even the most challenging outdoor conditions. The durable tank design protects the internal oil-immersed core and windings from moisture, dust, and extreme temperatures. Built to withstand high winds, heavy rain, and corrosive atmospheres, these transformers offer sustained operational integrity year after year. This resilience minimizes the need for frequent repairs or early replacements, contributing to lower lifecycle costs and uninterrupted service. Trust our durable single-phase transformers to reliably deliver power, regardless of the environmental challenges they face.
Product Show
Explore the detailed design and practical application scenarios of pole mounted transformers
Pole Mounted Transformer Side
Transformer side structure
10kVA Pole Mounted Transformer
10kva transformer font view
Pole Mounted Transformer Design
transformer font design
Pole Mounted Transformer Back
transformer back design
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
Pole mounted transformers have been successfully applied in many projects and have been highly praised by customers.
Mexico Residential Area
CompletedProvide stable and reliable power conversion solutions for the smart factory to meet diverse production needs.
Country：Mexico
Model：20kVA Pole Mounted Transformer x 2
Guyana Data Center
CompletedEnsure the power safety of surrounding residents and meet daily work needs
Country：Guyana
Model：167kVA Pole Mounted Transformer x 15
Colombia Factory
CompletedNPC transformers provide safe, efficient, and reliable power distribution in Surinam.
Country：Colombia
Model：75kVA Pole Mounted Transformer x 10
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 are pole mounted transformers filled with?
Most pole mounted transformers are oil immersed transformers filled with insulating mineral oil or synthetic ester fluid. The oil serves two main purposes — it provides insulation between internal components and helps dissipate heat generated during operation. Some eco-friendly designs use biodegradable natural ester fluids for improved fire safety and environmental protection. Regular oil testing ensures the distribution transformer maintains optimal performance and long service life. -
What is a pole mounted recloser?
A pole mounted recloser is an automatic, high-voltage electrical switch installed alongside a pole mounted transformer to protect power lines from faults. When a short circuit or overload occurs, the recloser interrupts the flow of electricity and automatically restores power after a short delay. This reduces outages and improves grid reliability in overhead distribution transformer networks. Reclosers are essential for modern rural and urban power systems that rely on pole mounted transformers. -
What is the largest pole mounted transformer?
The largest pole mounted transformers typically range up to 500 kVA or more, depending on regional standards and pole load capacity. Larger-capacity three phase pole mounted transformers are designed for industrial or community-scale power distribution. However, most utilities prefer sizes under 300 kVA for safety, weight, and installation reasons. NPC Electric can design and manufacture custom high-capacity pole mounted transformers to meet specific voltage and kVA requirements. -
What is a three-phase transformer?
A three phase transformer is used to transfer electrical energy in three phase power systems, which are common in industrial, commercial, and large-scale distribution networks. Compared with a single phase transformer, a three phase pole mounted transformer delivers higher efficiency, balanced load distribution, and greater power capacity. It is often installed on poles or in substations as part of the distribution transformer network to step down high transmission voltages. -
Do transformers convert AC to DC?
No, transformers do not convert AC to DC. A transformer only changes the voltage level of alternating current (AC), stepping it up or down as needed. To convert AC to DC, additional electronic components such as rectifiers are required. For example, a pole mounted transformer may step down the AC voltage from 11kV to 415V, and then a rectifier or converter can change that AC output into DC for specific applications.
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