Single Phase Pole Mounted Transformer 10/15/25/37.5/50/100/375kVA 10/11kV

1. Product Description

The single phase pole mounted transformer with 10/11kV dual voltage flyback topology is a professional outdoor overhead power distribution device available in multiple rated capacities including 10kVA, 15kVA, 25kVA, 37.5kVA, 50kVA, 100kVA and 375kVA. Engineered for overhead line power conversion systems, this oil-immersed single-phase distribution transformer adopts advanced flyback circuit topology, supporting dual 10kV and 11kV primary voltage switching to adapt to diverse medium-voltage grid operation standards worldwide.

Manufactured with high-quality cold-rolled silicon steel cores and pure copper windings, this pole mounted distribution transformer features low no-load loss, stable electromagnetic conversion and excellent voltage regulation performance. The fully sealed tank structure integrates high-voltage bushings, low-voltage terminals, reliable grounding devices and integral mounting lugs, enabling direct pole-mounted installation without complex auxiliary infrastructure. All units comply with international power industry standards, with optimized insulation design and heat dissipation structure to ensure long-term stable operation in variable outdoor climatic conditions. As a core single-phase voltage step-down device for overhead power grids, it bridges high-voltage medium-power lines and low-voltage end-user power supply systems efficiently.

2. Core Product Uses

This 10/11kV dual voltage single phase pole mounted transformer focuses on medium-to-low voltage power conversion and decentralized power distribution, serving as a key equipment for overhead power grid voltage reduction and power transmission. Its core function is to convert 10kV or 11kV medium voltage overhead line power into standard low voltage suitable for civilian and small commercial electrical equipment, realizing safe, stable and efficient power energy transmission and distribution.

Equipped with flexible dual voltage switching capability, the flyback topology single-phase transformer can adapt to different regional medium-voltage grid specifications, solving the problem of inconsistent voltage standards in rural and suburban power networks. It effectively balances grid load distribution, reduces line transmission loss, and improves the overall power supply quality of decentralized power consumption areas. Meanwhile, the multi-capacity gradient design covers low-power household power supply to medium-power industrial and public facility power demand, realizing precise power matching for different end-user scenarios. In addition, the built-in overload and overcurrent protection functions can automatically isolate abnormal circuits, protecting rear-end electrical equipment and ensuring the safety and stability of the entire power distribution system.

3. Main Application Scenarios

Thanks to its compact pole-mounted structure, dual voltage adaptability and multi-capacity coverage, this single phase pole mounted transformer is widely deployed in various decentralized overhead power distribution scenarios, becoming the preferred power transformation equipment for regional grid upgrading and new rural electrification projects.

3.1 Rural Power Grid Electrification

It is the mainstream power transformation equipment for rural overhead power supply networks. The 10/11kV dual voltage design adapts to different rural grid construction standards, and small and medium capacities (10kVA to 100kVA) perfectly match scattered rural household power demand, solving the problem of insufficient voltage and unstable power supply in remote rural areas. It is also widely used for power supporting of rural agricultural facilities such as farmland irrigation equipment, agricultural greenhouses and rural breeding bases.

3.2 Suburban and Residential Area Power Distribution

For low-density suburban communities, villa areas and scattered residential blocks, this pole-mounted single-phase transformer avoids the high cost of box-type substation construction. The 375kVA high-capacity model can meet the centralized power demand of suburban residential clusters, while small-capacity models are suitable for single-building and scattered residential power supply, effectively optimizing urban and suburban overhead power grid layout.

3.3 Public Infrastructure Power Supply

It provides stable power support for outdoor public facilities including urban road lighting, traffic signal systems, street monitoring equipment and scenic area power distribution systems. The outdoor waterproof, dustproof and anti-corrosion structure adapts to long-term open-air operation, and the flyback topology ensures stable voltage output even under fluctuating grid load, meeting the continuous power supply demand of public infrastructure.

3.4 Light Industrial and Commercial Decentralized Power Consumption

Medium and high capacity models (50kVA to 375kVA) are applicable to small processing workshops, rural small factories, roadside shops and individual commercial outlets. It can stably supply power for light industrial equipment and commercial electrical appliances, with low operation loss and strong load adaptability, meeting the power demand of small-scale decentralized industrial and commercial scenarios.

3.5 Remote Area Off-Grid and Supplementary Power Supply

In remote mountainous areas, pastoral areas and temporary power consumption sites such as construction sites, this dual voltage single-phase transformer can cooperate with overhead temporary power lines to realize rapid power deployment. Its lightweight and easy-installation features greatly shorten the power grid construction cycle, providing reliable temporary and long-term power guarantee for remote areas without complete power grid coverage.

4. Outstanding Product Features

4.1 Advanced Dual Voltage Flyback Topology Design

Different from traditional single fixed-voltage transformers, this series adopts mature 10/11kV dual voltage flyback topology, supporting free switching between two mainstream medium voltage levels. The optimized flyback circuit structure improves electromagnetic conversion efficiency, effectively suppresses voltage surge and current fluctuation during power conversion, and enhances the transformer's anti-interference ability in complex grid environments. This dual voltage compatibility enables the equipment to adapt to power grid standards in different regions, greatly improving product versatility and application scope.

4.2 Full Capacity Gradient Coverage

The product line covers 10kVA, 15kVA, 25kVA, 37.5kVA, 50kVA, 100kVA and 375kVA full-range capacity models, realizing precise matching from low-power household power supply to medium-high power public and industrial power consumption. Users can select targeted capacity specifications according to actual load demand, avoiding equipment waste caused by excessive capacity or power supply instability caused by insufficient capacity, and maximizing the cost performance of power distribution equipment.

4.3 High Efficiency and Energy Saving, Low Operation Loss

Adopting high-permeability low-loss silicon steel core and high-purity copper winding process, the transformer effectively reduces no-load loss and load loss, with overall operation efficiency exceeding 98%. Compared with traditional ordinary single-phase transformers, it can significantly reduce long-term power transmission energy consumption, helping power grid operators and end users save electricity costs and meet modern energy-saving and emission-reduction power grid construction requirements.

4.4 Compact Pole-Mounted Structure, Easy Installation and Maintenance

The integrated closed tank design is lightweight and small in footprint, with reserved standard pole mounting lugs and lifting structures. It can be directly installed on utility poles without large-scale foundation construction, greatly reducing infrastructure investment and construction cycle. The fully sealed oil-immersed structure isolates internal components from external dust, rain and corrosive gases, reducing component aging rate. The simple internal structure and standardized accessory design make daily inspection and maintenance more convenient, with ultra-low later maintenance cost.

4.5 Reliable Outdoor Environmental Adaptability

The whole machine adopts anti-corrosion spray treatment, and the insulation materials are selected to adapt to extreme temperature changes. It can operate stably in the temperature range of -40℃ to +45℃, resisting rain erosion, wind and snow impact and ultraviolet aging in outdoor environments. The built-in overload, overcurrent and short-circuit protection mechanisms can automatically protect the equipment and rear-end load when the grid is abnormal, effectively extending the service life of the transformer and improving the safety and stability of the power distribution system.

4.6 Stable Voltage Output and Strong Load Adaptability

Optimized electromagnetic structure and flyback topology voltage regulation technology ensure small voltage fluctuation rate under no-load and full-load conditions. The equipment can adapt to frequent load changes in residential, commercial and light industrial scenarios, maintain continuous and stable low-voltage power output, effectively avoid equipment damage caused by voltage instability, and improve the reliability of end-user power consumption.

5. Frequently Asked Questions (FAQ)

5.1 What grid scenarios are suitable for the 10/11kV dual voltage flyback topology?

This dual voltage single phase pole mounted transformer is specially designed for areas with inconsistent 10kV and 11kV medium voltage grid standards, cross-regional power grid renovation projects, and old grid upgrading scenarios. The flyback topology enables the equipment to freely switch between two voltage levels without replacing the main equipment, solving the problem of poor universality of traditional single-voltage transformers. It is especially suitable for rural power grid reconstruction, suburban grid expansion and temporary power distribution projects with uncertain voltage standards, and can perfectly adapt to most medium-voltage overhead power distribution systems in global civil and light industrial scenarios.

5.2 How to select the correct capacity model among 10/15/25/37.5/50/100/375kVA?

Capacity selection depends on the actual total power load and future expansion demand of the power supply area. 10kVA, 15kVA and 25kVA small-capacity models are suitable for single-family rural households, scattered small shops and independent street lighting systems; 37.5kVA and 50kVA medium-capacity models apply to rural centralized residential groups and small light industrial workshops; 100kVA model is suitable for suburban community blocks and medium-sized public facilities; 375kVA high-capacity model is the best choice for residential cluster power supply and small industrial park decentralized power distribution. It is recommended to reserve 20%-30% surplus capacity according to the actual load to cope with future power consumption growth.

5.3 What are the daily maintenance requirements for pole-mounted single-phase transformers?

This series of oil-immersed pole mounted transformers features low maintenance design, with simple daily inspection and maintenance work. It is necessary to regularly check whether the pole mounting structure is firm, whether the terminal wiring is loose or oxidized, and whether the transformer tank has oil leakage or deformation. Regularly test the insulation performance and voltage conversion accuracy of the equipment to ensure the normal operation of the internal flyback voltage regulation system. In rainy and typhoon seasons, check the grounding device integrity to ensure safe grounding. Under normal operating conditions, the equipment can operate stably for more than 10 years with minimal maintenance, greatly reducing daily operation and maintenance pressure for power grid management departments.