5KVA 10KVA 37.5KVA 75KVA 100KVA 167KVA 250KVA Single Phase Pole Mounted Transformer

1. Product Overview

The5KVA 10KVA 37.5KVA 75KVA 100KVA 167KVA 250KVA Single Phase Pole Mounted Transformer series is a full-range oil-immersed overhead distribution transformer designed specifically for single-phase power grid systems. Covering ultra-light to medium-large load capacities, this comprehensive single phase pole mounted transformer lineup fills the capacity gap of traditional single-specification pole transformers, fully complying with ANSI C57.12.26 and IEC international utility equipment standards. As core terminal power conversion equipment for overhead power distribution networks, it supports high-voltage overhead line step-down conversion to standard residential and commercial low voltage, serving scattered single-phase load scenarios worldwide.

This multi-capacity single phase overhead transformer series includes seven mainstream industrial and utility grades: compact 5KVA and 10KVA micro-capacity models, universal 37.5KVA, 75KVA and 100KVA mid-range specifications, and heavy-duty 167KVA and 250KVA high-capacity versions. Adopting mature fully sealed oil-immersed cooling technology and precision copper winding structure, each pole mounted single phase transformer delivers stable voltage regulation, low operational loss and outstanding outdoor weather resistance. Widely adopted in rural electrification, suburban residential power distribution, light commercial power supply and remote facility power guarantee projects, it is the most versatile full-series single-phase distribution transformer for modern overhead power grid construction and renovation.

2. Core Product Features

2.1 Full-Range Capacity Coverage for All Single-Phase Loads

This single phase pole mounted transformer series realizes seamless capacity coverage from 5KVA to 250KVA, accurately matching all types of single-phase power consumption demands. The mini 5KVA and 10KVA single phase pole transformers are ultra-compact and energy-saving, perfectly suited for ultra-light scattered loads such as remote farm facilities, single households and small outdoor monitoring equipment. The popular 37.5KVA, 75KVA and 100KVA specifications are the most widely used universal models, balancing cost, load capacity and energy efficiency for conventional residential clusters and small commercial loads. The upgraded 167KVA and 250KVA high-capacity pole mounted transformers support centralized medium single-phase loads, solving the problem of insufficient power supply for dense residential areas and small-scale light industrial single-phase equipment, realizing one-stop capacity matching for overhead single-phase power distribution.

2.2 Reliable Oil-Immersed Cooling & Low-Loss Energy-Saving Design

All models of this single phase overhead transformer adopt high-quality grain-oriented silicon steel core and high-purity oxygen-free copper windings, effectively reducing no-load loss, load loss and magnetic leakage loss during long-term continuous operation. Equipped with a fully sealed oil-immersed natural circulation cooling system, the transformer uses high-purity insulating mineral oil as both insulation and heat dissipation medium, ensuring stable temperature control under full-load and intermittent overload conditions. The fully welded sealed tank structure isolates internal components from external moisture, dust and air oxidation, preventing insulating oil aging and insulation performance degradation. This low-energy-consumption structure effectively reduces long-term grid operation costs and meets global energy-saving power grid construction standards.

2.3 Professional Pole-Mounted Outdoor Weatherproof Structure

Specially optimized for overhead pole installation, every single phase pole mounted transformer in this series features a lightweight, high-strength integrated mechanical structure and multi-layer anti-corrosion weather-resistant coating. The standardized pole mounting bracket enables fast, convenient and firm installation without complex foundation construction, saving land occupation and engineering investment costs compared with ground-mounted transformers. The whole machine resists ultraviolet radiation, rain erosion, wind and sand impact, low-temperature freezing and high-humidity environments, adapting to long-term exposed outdoor operation in rural, suburban and field scenarios. Its excellent environmental adaptability makes it far more suitable for scattered overhead power distribution than indoor dry-type transformers.

2.4 Precise Voltage Regulation & Stable Power Output

Engineered for medium-voltage overhead power grid systems, this multi-capacity single phase pole transformer supports accurate high-to-low voltage step-down conversion and real-time voltage stabilization. The optimized symmetrical winding structure ensures ultra-low voltage output deviation, effectively compensating for long-distance transmission voltage drop and peak power consumption voltage fluctuation. It suppresses grid harmonic interference and unbalanced load impact, maintaining stable low-voltage power output for terminal electrical equipment. Whether operating under light intermittent loads or continuous heavy loads, the equipment maintains consistent power supply quality, avoiding equipment damage and power consumption abnormalities caused by voltage instability.

2.5 Complete Safety Protection & Low Maintenance Rate

This outdoor single phase oil immersed pole mounted transformer is equipped with multiple built-in safety protection mechanisms, including over-current protection, short-circuit resistance, over-temperature protection and pressure relief protection. It can quickly respond to grid surge, sudden load surge and circuit faults to cut off potential safety hazards, protecting grid operation and terminal electrical equipment safety. The firm internal structural design enhances short-circuit withstand capability and vibration resistance, with extremely low daily failure rate. The fully sealed maintenance-free structure reduces daily inspection and maintenance workload, realizing long-term unattended stable operation for outdoor overhead power distribution systems.

3. Core Uses

The 5KVA to 250KVA Full Series Single Phase Pole Mounted Transformer is dedicated to voltage conversion, power stabilization and safe terminal power distribution in single-phase overhead power grid systems. Its core function is to step down high-voltage electricity from overhead transmission lines to standard low-voltage power that meets civilian, commercial and agricultural single-phase power consumption standards, solving the voltage level mismatch problem in medium-voltage single-phase power distribution links.

According to different capacity specifications, this multi-spec single phase pole transformer undertakes hierarchical power supply tasks: micro 5KVA and 10KVA models provide stable power for ultra-light scattered loads; medium 37.5KVA, 75KVA and 100KVA models undertake daily conventional residential and small commercial power distribution; high-capacity 167KVA and 250KVA versions support centralized medium-load power supply and peak load regulation. In addition, it can effectively reduce overhead line transmission loss, optimize regional single-phase power grid quality, support rural power grid upgrading, remote facility power guarantee and distributed new energy voltage matching, and improve the overall reliability and coverage of single-phase power distribution networks.

4. Main Application Scenarios

4.1 Rural & Remote Residential Power Distribution

This full-series single phase pole mounted transformer is the core equipment for rural electrification and remote area power supply. The 5KVA and 10KVA single phase pole transformers are widely used for single remote households, scattered rural cottages and isolated rural facilities with low power consumption. The mainstream 37.5KVA, 75KVA and 100KVA specifications perfectly match the power demand of ordinary rural village clusters, meeting daily power consumption of household lighting, electrical appliances and living equipment. The 167KVA and 250KVA high-capacity models solve the peak power shortage problem of large rural communities and densely populated rural areas, effectively improving rural power supply stability.

4.2 Suburban & Fringe Residential Community Power Supply

Ideal for suburban scattered single-family residences, urban fringe residential blocks and villa community power distribution projects. These scenarios are dominated by single-phase loads with decentralized power consumption characteristics, which perfectly fit the application advantages of pole mounted single phase transformers. The multi-capacity optional design can flexibly match different community scale load demands, optimize suburban overhead power grid structure, eliminate old grid voltage instability hidden dangers, and provide stable and high-quality low-voltage power for suburban residential users.

4.3 Small Commercial & Light Industrial Single-Phase Loads

The high-capacity 100KVA, 167KVA and 250KVA single phase pole mounted transformers are suitable for rural small processing workshops, roadside retail stores, township service stations and small light industrial single-phase power consumption scenarios. These commercial and light industrial scenarios have medium and continuous single-phase load demands, and the stable heavy-load operation performance of the transformer can continuously support small processing machinery, commercial lighting and office equipment operation, ensuring stable and efficient commercial and small industrial production operation.

4.4 Outdoor Remote Facility & Temporary Engineering Power Guarantee

Thanks to flexible pole-mounted installation and strong outdoor environmental adaptability, the full-series single phase overhead transformer is widely used for power supply of remote communication base stations, outdoor monitoring systems, field agricultural facilities and temporary construction engineering. Users can select 5KVA to 250KVA matched capacity according to actual temporary load scale, quickly build stable outdoor single-phase power distribution systems, and provide reliable power support for field operation and remote facility long-term operation.

4.5 Rural Distributed New Energy Supporting Projects

This single phase pole transformer series serves as supporting voltage regulation equipment for rural small distributed photovoltaic power generation and micro wind power generation systems. It stabilizes fluctuating voltage generated by new energy equipment, completes safe voltage conversion and local power distribution, improves new energy power utilization efficiency, and solves the problem of unstable grid-connected voltage of rural civilian new energy power generation projects, promoting the popularization of rural clean energy power supply.

5. Frequently Asked Questions (FAQ)

5.1 How to select the correct capacity from 5KVA, 10KVA, 37.5KVA, 75KVA, 100KVA, 167KVA and 250KVA models?

Capacity selection depends on actual load scale, power consumption characteristics and peak demand. The 5KVA and 10KVA single phase pole mounted transformers apply to ultra-light scattered loads such as single remote households, outdoor monitoring and small agricultural facilities with low and stable power consumption. The 37.5KVA, 75KVA and 100KVA models are universal choices for ordinary rural villages, suburban residential clusters and small shops, covering most conventional civilian and small commercial single-phase loads. The 167KVA and 250KVA high-capacity pole transformers are suitable for dense residential areas, small light industrial workshops and centralized commercial scenarios with large peak power consumption. It is recommended to reserve 10%-20% load margin to avoid long-term full-load operation and extend transformer service life.

5.2 What are the unique advantages of oil-immersed single phase pole mounted transformers over dry-type transformers?

For outdoor overhead single-phase power distribution scenarios, single phase oil immersed pole mounted transformers have irreplaceable comprehensive advantages. The oil-immersed circulating cooling system provides more efficient and stable heat dissipation, adapting to long-term outdoor high-temperature operation and intermittent overload working conditions, with better temperature resistance than dry-type products. The fully sealed oil tank structure has excellent waterproof, dustproof, anti-corrosion and weather resistance, which can stably operate in harsh outdoor environments such as wind, rain and ultraviolet exposure. In addition, pole-mounted oil immersed transformers feature lower manufacturing and maintenance costs, longer service life and higher cost performance, making them the mainstream choice for global rural and suburban overhead single-phase power grids.

5.3 What environmental and installation conditions are suitable for this full-series pole mounted transformer?

All specifications of this single phase pole mounted transformer series are designed for outdoor overhead installation, adapting to ambient temperatures ranging from -25℃ to +40℃ and altitudes below 1000 meters. The anti-aging and anti-corrosion shell can resist high humidity, dust, wind and rain erosion, suitable for rural open-air power poles, suburban overhead lines and field outdoor environments. The standardized pole mounting structure is compatible with conventional cement and wooden power poles, requiring no complex foundation construction. It only needs to avoid long-term waterlogging and severe chemical corrosion environments. Regular simple inspection of oil tank sealing and operating temperature can ensure long-term stable and low-failure operation of the equipment.