Single Phase Pole Mounted Transformer 34.5Kv to 240V/480V

Single Phase Pole Mounted Transformer 34.5Kv to 240V/480V

1. Technical Parameter

2. Product Description

Single Phase Pole Mounted Transformer 34.5Kv to 240V/480V is a professional high-voltage oil immersed single-phase distribution transformer tailored for North American and global 34.5kV medium-high voltage overhead power distribution systems. As a core outdoor pole-mounted power conversion device, this high-voltage single-phase transformer is specially designed for industrial and commercial voltage standard scenarios, accurately stepping down 34.5kV high-tension line voltage to practical 240V/480V split-phase low voltage, perfectly matching the power supply requirements of small industrial equipment, commercial facilities and centralized high-power single-phase loads.

Manufactured with premium CRGO low-loss silicon steel core and high-conductivity oxygen-free copper windings, this 34.5kV pole mounted transformer effectively suppresses magnetic flux leakage and reduces idle power consumption, fully meeting DOE international energy efficiency standards. Adopting mature ONAN natural oil circulation cooling technology, the internal high-purity insulating oil circulates freely to dissipate operating heat evenly, ensuring stable thermal balance during 24-hour continuous operation and long-term full-load standby. The fully sealed welded steel tank undergoes multi-layer anti-rust, anti-corrosion and UV-resistant spraying treatment, which can effectively resist outdoor rain erosion, high-temperature aging and low-temperature frost damage, adapting to complex and changeable outdoor climatic environments.

This 34.5kV to 240/480V step-down transformer supports flexible no-load tap voltage regulation, which can calibrate output voltage according to regional grid voltage deviation and seasonal load fluctuations to ensure stable and accurate low-voltage output. The unique dual 240V/480V voltage output design breaks the limitation of traditional low-power single-phase transformers, meeting both medium and high-power single-phase power consumption demands. All finished oil immersed distribution transformers pass strict factory tests including lightning impulse withstand test, power frequency withstand voltage test, short-circuit impact test and temperature rise test, with stable performance, low failure rate and strong field adaptability, becoming the preferred power transformation equipment for high-voltage remote industrial and commercial power distribution projects.

3. Core Product Features

3.1 High Voltage Withstand & Superior Insulation Safety

Equipped with 150kV ultra-high basic insulation level, this single phase pole mounted transformer has excellent lightning strike resistance and grid surge tolerance. It can stably cope with instantaneous voltage impact and abnormal voltage fluctuation in 34.5kV high-voltage power grids, effectively avoiding insulation breakdown and equipment burnout. The high-grade insulating oil and compact winding isolation structure maintain long-term stable insulation performance in humid, dusty and harsh outdoor environments, greatly improving the overall safety and operational reliability of high-voltage terminal power distribution systems.

3.2 240V/480V Dual Voltage Output & Wide Load Adaptability

Different from conventional 120/240V civil transformers, this oil immersed pole transformer adopts industrial-grade 240V/480V dual split-phase output design. The 240V voltage is suitable for medium-power equipment such as commercial lighting, ventilation systems and small mechanical devices, while the 480V high-voltage output perfectly matches high-power single-phase industrial equipment and commercial electrical loads. The dual-voltage flexible output mode covers diversified industrial and commercial power consumption scenarios, realizing multi-purpose use of a single device and improving power distribution equipment utilization efficiency.

3.3 Low Loss Energy-saving & Eco-friendly Operation

Optimized core stacking process and precision copper winding layout minimize no-load loss and load operating loss, reaching international first-class energy-saving level and complying with DOE energy-saving certification requirements. Users can choose environmentally friendly FR3 ester insulating oil to replace traditional mineral oil, which features flame retardant, non-toxic and pollution-free properties, suitable for ecological protection areas, densely populated commercial zones and high-safety requirement scenarios. Long-term low-consumption operation effectively reduces grid transmission loss and user operating electricity costs, with remarkable economic and environmental benefits.

3.6 Strong Outdoor Weather Resistance & Structural Stability

Designed exclusively for overhead pole-mounted installation, the fully sealed integrated tank structure has excellent waterproof, dustproof, anti-rust and anti-ultraviolet aging capabilities. It can operate stably in extreme temperatures ranging from -30℃ to +45℃ and resist strong wind speeds up to 35m/s, adapting to harsh outdoor environments such as coastal areas, mountainous regions and open industrial zones. The reinforced mechanical structure enhances short-circuit impact resistance and seismic performance, ensuring year-round unattended stable operation of outdoor pole-mounted equipment.

3.7 Easy Installation & Low Operational Maintenance

The compact and lightweight integrated body supports fast hoisting and installation on wooden or concrete utility poles, with simple on-site wiring and short construction cycle, effectively reducing on-site construction costs. The fully enclosed oil immersed structure avoids frequent insulating oil replacement and daily trivial maintenance work. The optional CSP fully self-protected design integrates overload, overvoltage and short-circuit protection functions, eliminating the need for additional external protection devices. Daily operation only requires regular visual inspection, greatly reducing later operation and maintenance workload and equipment failure rate.

4. Core Purpose & Application Scenarios

4.1 Core Purpose

The core function of Single Phase Pole Mounted Transformer 34.5Kv to 240V/480V is to realize safe, efficient and stable step-down conversion from 34.5kV high-voltage overhead grid power to industrial-grade 240V/480V single-phase low-voltage power. As a key terminal power distribution device in high-voltage single-phase power systems, it undertakes remote decentralized power distribution, voltage stabilization, electrical isolation and power loss reduction tasks. It solves the problems of large loss and unstable voltage in long-distance high-voltage power transmission, and provides reliable high-quality power guarantee for industrial and commercial high-power single-phase electrical equipment.

4.2 Typical Application Scenarios

Remote Industrial Zone Power Distribution: Widely used for power supply of remote small processing factories, rural industrial workshops and decentralized industrial bases covered by 34.5kV high-voltage grids. The 240V/480V dual voltage output meets the mixed power demand of medium and high-power industrial equipment, solving the difficulty of long-distance industrial power supply.

North American Standard Commercial Power Supply: Ideal for suburban commercial streets, remote shopping outlets, gas stations and service facilities in North American power grid areas. The industrial-grade split-phase voltage fully conforms to local commercial power supply standards, supporting stable operation of commercial mechanical equipment and power distribution systems.

Outdoor Engineering & Field Equipment Power Supply: Suitable for field construction sites, highway roadside facilities, meteorological monitoring stations and outdoor communication base stations. The all-weather weather-resistant design adapts to long-term unattended outdoor operation, providing continuous and stable power support for field engineering and monitoring equipment.

Farm & Pastoral Large Load Power Supply: Applied to large-scale farms, pastoral breeding bases and agricultural irrigation equipment power distribution. It meets the high-power single-phase power consumption demand of agricultural machinery and breeding auxiliary equipment, improving the stability of rural industrial power supply.

High-voltage Grid Upgrading & Renovation: Used for energy-saving renovation and capacity expansion of old 34.5kV power distribution networks, replacing outdated high-loss transformers, optimizing terminal power supply quality, reducing grid operation loss, and improving the overall operational efficiency of regional high-voltage power distribution systems.

5. FAQ (Frequently Asked Questions)

5.1 What are the application differences between 240/480V and traditional 120/240V pole mounted transformers?

The core difference lies in the applicable load scenarios and power supply standards. Traditional 120/240V single-phase transformers are mainly used for low-power residential civil power supply, while this 34.5kV 240/480V pole mounted transformer is oriented to industrial and commercial high-power load scenarios. The 480V high-voltage output can carry larger single-phase power loads, effectively reducing line current and transmission loss during power supply, and is more suitable for commercial equipment, industrial machinery and agricultural high-power facilities. It is the standard power transformation equipment for industrial and commercial power distribution in North American high-voltage grid systems.

5.2 What are the advantages of CSP self-protected type compared with standard type 34.5kV oil immersed transformer?

The standard transformer requires external matching circuit breakers and protection devices to realize fault protection, which is suitable for centralized substation management scenarios with perfect supporting facilities. The CSP completely self-protected model integrates built-in overload protection, short-circuit protection and over-temperature protection modules. It can automatically cut off power supply in case of grid surge, equipment overload and short-circuit faults, avoiding equipment damage and power supply accidents. The CSP type simplifies on-site installation and wiring, requires no additional auxiliary equipment, and is more suitable for unattended outdoor pole-mounted operation scenarios with high safety requirements.

5.3 How to maintain this high-voltage pole mounted transformer for long-term outdoor service?

This fully sealed oil immersed single-phase transformer features low daily maintenance requirements. Daily routine management only needs visual inspection to check for tank oil leakage, shell corrosion and loose high-low voltage terminals, and ensure no debris covers the heat dissipation area. It is recommended to test insulating oil dielectric strength and water content every 3 to 5 years, and conduct a comprehensive insulation performance test and electrical parameter calibration every 5 years. Avoid long-term overload operation and operation beyond the rated temperature and altitude limit. Standard regular inspection and maintenance can effectively guarantee the 30-year design service life and stable safe operation of the equipment.