100Kva Single Phase Pole Mounted Transformer 34.5Kv Input to 440V / 120V / 240V Output
1. Product Description
This 100Kva single phase pole mounted transformer is a high-performance oil immersed overhead distribution transformer engineered for 34.5kV medium-voltage overhead power grid systems. Designed with multi-output voltage flexibility, this utility-grade single-phase step-down transformer supports three practical secondary output specifications: 120V, 240V and 440V, fully covering residential, commercial and light industrial power consumption standards for global power distribution projects. Compliant with ANSI, IEEE C57.12.20 and IEC international industry standards, this 34.5kV pole mounted transformer is built to withstand long-term outdoor overhead operation, making it a mainstream upgraded power conversion device for high-voltage rural and suburban power grids.
Featuring a professional center-tapped winding structure and optimized electromagnetic design, the 100Kva oil immersed single-phase transformer delivers stable voltage conversion from 34.5kV high line voltage to multiple low-voltage outputs without compromising power quality. It adopts high-purity oxygen-free copper windings and low-loss grain-oriented silicon steel core, effectively reducing no-load loss and operational heat generation compared with conventional single-phase transformers. The fully sealed welded steel oil tank and vacuum oil injection process eliminate internal air and moisture, protecting premium insulating oil from oxidation and deterioration. Built with standard pole mounting brackets and a compact lightweight structure, this outdoor single-phase distribution transformer enables fast overhead installation. Its unique multi-voltage output design solves the voltage matching dilemma of mixed civilian and small industrial loads, greatly improving equipment versatility for modern overhead power distribution networks.
2. Core Product Uses
The core function of this 100Kva 34.5kV single phase pole mounted transformer is to execute reliable, low-loss high-to-low voltage step-down conversion for overhead power distribution systems. It mainly steps down 34.5kV medium-voltage overhead line power into standard 120V, 240V and 440V low-voltage power, acting as the terminal voltage regulation and power distribution core equipment connecting high-voltage transmission lines and end-user electrical loads.
In daily grid operation, this multi-output oil immersed pole transformer effectively stabilizes terminal output voltage, suppresses line voltage drop and power fluctuation caused by long-distance power transmission and peak load surges. It significantly reduces power transmission loss of scattered overhead power supply lines and improves overall grid energy utilization efficiency. The switchable 120V/240V/440V output mode flexibly adapts to different load types: 120V for low-power household electronic devices and lighting systems, 240V for high-power home appliances and small commercial equipment, and 440V for light industrial single-phase machinery. Equipped with inherent lightning resistance and overvoltage protection performance, it resists grid surge and instantaneous current impact, protecting end-user electrical equipment from burnout. Supporting long-term unattended outdoor operation, this durable single-phase power transformer minimizes daily grid maintenance pressure and ensures continuous stable power supply for decentralized power consumption areas.
3. Main Application Scenarios
3.1 Rural Overhead Power Grid Distribution
This 34.5kV input 100Kva single phase pole mounted transformer is the ideal power distribution solution for rural high-voltage overhead grid construction and renovation. Most remote rural areas adopt 34.5kV long-distance overhead transmission lines to solve power supply coverage problems. This oil immersed step-down transformer can convert high-voltage grid power into multi-spec low-voltage power, providing stable 120V/240V power for rural household daily electricity, village public lighting and community auxiliary facilities. Its 440V output also meets the power demand of rural small processing equipment, perfectly matching the mixed civilian and light industrial power consumption characteristics of rural areas.
3.2 Suburban and Remote Area Power Supply
It is widely deployed in suburban fringe zones, pastoral areas, mountainous remote regions and scattered low-density residential clusters. These areas feature sparse power loads and long power transmission distances, where centralized ground-mounted transformers are uneconomical and impractical. The pole-mounted installation design saves construction space and investment costs, while the 100Kva rated capacity fully meets the concentrated power demand of suburban residential groups and remote field facilities. The multi-voltage output design adapts to diverse local power consumption habits and equipment standards, filling the power supply gap in remote decentralized power consumption scenarios.
3.3 Small Commercial and Light Industrial Scenarios
The transformer is perfectly suited for roadside retail stores, rural small workshops, service stations and small-scale light industrial facilities. Small commercial scenarios require flexible voltage matching: 120V/240V for daily office, lighting and conventional commercial equipment, and 440V for small single-phase processing machinery and high-power commercial devices. This high-efficiency oil immersed pole transformer provides stable continuous power support for light-load commercial and industrial operations, ensuring normal production and business operation without voltage instability or power supply insufficiency.
3.4 Outdoor Public and Field Facility Power Supply
It serves as reliable power transformation equipment for outdoor scattered public facilities, including rural road monitoring systems, scenic area service equipment, field communication base station auxiliary systems, agricultural water pump equipment and outdoor street lighting systems. These field facilities have low-capacity single-phase power demand and are widely scattered. The outdoor weather-resistant design of this 34.5kV single-phase transformer adapts to harsh open-air environments, realizing long-term stable unattended power supply for outdoor public infrastructure.
3.5 North American Standard Grid Construction and Upgrading
Tailored for North American 34.5kV medium-voltage grid standards and multi-voltage terminal power supply specifications, this ANSI-certified pole mounted transformer is widely used in new grid construction, old grid renovation and voltage level upgrading projects in North America and other regions adopting American power standards. It solves the problem of single-voltage equipment limitation in traditional grid systems, realizes flexible matching of multiple terminal power demands, and improves the comprehensiveness and stability of regional overhead power distribution networks.
4. Core Product Features
4.1 Triple Output Voltage Design, Ultra-Wide Application Compatibility
Different from conventional single or dual-voltage pole transformers, this 100Kva single phase pole mounted transformer integrates 120V, 240V and 440V three output modes in one unit. The center-tapped winding structure ensures independent and stable operation of each voltage gear without mutual interference. It can freely switch between civilian low voltage and light industrial medium voltage according to on-site load demands, covering almost all single-phase power consumption scenarios. This all-in-one design eliminates the need for multiple types of transformers for different voltage requirements, greatly reducing project procurement costs and equipment inventory pressure.
4.2 34.5kV High-Voltage Adaptability for Long-Distance Transmission
Specially optimized for 34.5kV high-level medium-voltage overhead lines, this oil immersed distribution transformer has higher voltage resistance and insulation level than conventional 10kV/15kV pole transformers. It supports long-distance low-loss power transmission, effectively solving the voltage drop and power attenuation problems in remote area power supply. Fully compliant with international high-voltage grid operation standards, it features precise voltage conversion ratio and strong grid anti-interference ability, ensuring stable operation in standard 34.5kV power distribution networks without parameter mismatch faults.
4.3 Low Loss Energy-Saving Operation, Reduced Long-Term Costs
Adopting high-grade low-loss silicon steel core and high-conductivity pure copper windings, the equipment minimizes hysteresis loss and eddy current loss during electromagnetic conversion. Its no-load loss and load loss are far lower than industry standard values. Even in long-term standby and intermittent peak load operation, the power transmission loss is effectively controlled. Whether outputting 120V, 240V or 440V voltage, it maintains efficient energy-saving performance, helping power supply departments and end users reduce long-term operational power consumption and comprehensive operating costs.
4.4 Fully Sealed Oil Immersed Structure, Superior Outdoor Durability
The whole machine adopts integrally welded fully sealed steel oil tank and multi-layer waterproof, dustproof and anti-corrosion sealing structure. The vacuum oil injection process completely removes internal moisture and air, preventing transformer oil deterioration, water absorption and insulation aging. The external anti-rust and ultraviolet-proof spraying treatment, together with high-strength outdoor insulating bushings, endows the equipment with excellent lightning resistance, overvoltage resistance, moisture resistance and salt fog resistance. It can operate stably for years in harsh outdoor environments such as high temperature, low temperature, rain, snow and coastal humid weather.
4.5 Easy Pole-Mount Installation, Low Maintenance Requirements
The optimized compact lightweight structure and standard universal mounting brackets support direct fixed installation on utility poles, eliminating the need for concrete foundation construction and shortening on-site construction cycles. Benefiting from the fully sealed maintenance-free design, the equipment requires no frequent oil replacement or internal cleaning like open-type transformers. With few vulnerable parts and stable mechanical structure, it has extremely low daily maintenance workload, fully adapting to the unattended operation mode of outdoor overhead power grids and reducing later grid operation and maintenance pressure.
4.6 Stable Output Performance and Strong Load Adaptability
Through precise electromagnetic parameter calibration and three-phase balance optimization for single-phase structure, the transformer delivers highly stable output voltage with small fluctuation range. It can effectively resist external electromagnetic interference, line load mutation and instantaneous current impact. The 100Kva rated capacity matches mainstream medium single-phase load demands, with reliable short-term overload tolerance to cope with seasonal power consumption peaks. It maintains consistent power supply quality under various working conditions, ensuring safe and stable operation of terminal electrical equipment.
5. Frequently Asked Questions (FAQ)
5.1 How to switch and match 120V, 240V and 440V output voltages on this 34.5kV pole transformer?
This 100Kva single phase pole mounted transformer adopts an adjustable tapping and center-tapped winding integrated design to realize triple voltage output switching. On-site technicians can complete voltage mode switching through simple terminal wiring and tap adjustment according to actual load requirements. The 120V output is mainly used for low-power household lighting and small electronic equipment; the 240V output adapts to high-power household appliances and conventional small commercial equipment; the 440V output is dedicated to light industrial single-phase machinery and special commercial high-voltage single-phase equipment. Each voltage mode maintains accurate conversion precision and stable power quality without mutual influence, supporting flexible on-site matching for diverse power demand scenarios.
5.2 What advantages does a 34.5kV high-input single-phase pole transformer have over conventional low-voltage pole transformers?
Compared with traditional 10kV, 15kV low-input pole mounted transformers, this 34.5kV high-voltage model has prominent advantages in long-distance power transmission and environmental adaptability. Higher input voltage effectively reduces line transmission current and power loss, solving the problem of insufficient power supply and serious voltage drop in remote long-line power supply scenarios. In addition, it has higher insulation level and lightning protection performance, stronger resistance to grid surge and extreme weather interference. Equipped with triple multi-voltage output function, it covers more application scenarios and has higher equipment utilization rate and comprehensive cost performance, making it the preferred equipment for high-voltage overhead grid renovation and new construction projects.
5.3 Can this oil immersed single-phase transformer operate continuously in rainy and humid outdoor environments?
Yes, this outdoor-grade 100Kva 34.5kV single phase pole mounted transformer is fully optimized for harsh humid and rainy working conditions. The fully sealed integral welding structure completely isolates internal windings and insulating oil from external humid air and rainwater, thoroughly avoiding insulation moisture and internal corrosion. The external anti-corrosion and waterproof coating, together with outdoor special insulating accessories, provides excellent moisture-proof, rain-proof and salt fog resistance. It can operate stably for a long time in rainy seasons, humid coastal areas and foggy mountainous regions, with low failure rate and strong weather resistance, fully meeting the long-term unattended operation requirements of outdoor overhead power distribution systems.
