Single Phase Pole Mounted Transformer 34.5kV/35kV Input 200V/400V/480V Output
Single Phase Pole Mounted Transformer 34.5kV/35kV Input 200V/400V/480V Output
1. Product Overview
The Single Phase Pole Mounted Transformer with 34.5kV and 35kV high voltage input, and 200V, 400V, 480V low voltage output is a professional outdoor overhead power distribution device widely adopted in global utility power grids, rural power renovation and remote area power supply projects. Designed and manufactured in compliance with ANSI, IEEE C57 and IEC 60076 international standards, this oil-immersed single-phase distribution transformer supports dual primary voltage options of 34.5kV and 35kV, paired with three mainstream secondary voltage grades of 200V, 400V and 480V, perfectly matching North American, Southeast Asian and African regional power grid specifications.
Adopting classic pole-mounted installation structure and mature ONAN oil natural air cooling technology, this overhead single-phase power transformer features compact overall layout, lightweight body and convenient field installation. It is equipped with high-quality grain-oriented silicon steel core and high-purity copper windings, effectively reducing no-load loss and operating temperature rise. The fully sealed corrosion-resistant oil tank adapts to long-term outdoor exposed operation, solving the voltage conversion and safe power supply demands of medium-voltage overhead lines for scattered residential loads, small commercial facilities and remote equipment power consumption. As a mainstream outdoor single-phase step-down transformer, it balances energy-saving performance, operational stability and installation economy.
2. Core Product Features
2.1 Dual High-Voltage Input & Multi Low-Voltage Output Compatibility
This pole mounted single-phase transformer supports two common medium-high voltage input standards: 34.5kV and 35kV, covering most regional overhead transmission line voltage specifications. The flexible multi-range low-voltage output design includes 200V, 400V and 480V optional grades, fully adapting to different terminal load requirements. The 200V output suits civilian household power supply and small low-power equipment; 400V matches international general single-phase industrial power standards; 480V is dedicated for North American industrial equipment and commercial power supply systems. The multi-voltage flexible matching design avoids on-site voltage conversion equipment configuration, greatly improving project universality and reducing auxiliary engineering costs.
2.2 Excellent Outdoor Environmental Adaptability & Structural Durability
Different from indoor power transformers, this outdoor single-phase pole mounted transformer is specially optimized for harsh open-air working conditions. The whole machine adopts hot-dip galvanized bracket and anti-rust painted oil tank, with outstanding waterproof, dust-proof, lightning-proof and anti-corrosion capabilities. It can operate stably in extreme weather environments such as high temperature, heavy rain, strong wind and low temperature frost, adapting to long-term unattended overhead pole-mounted operation. The reinforced mechanical structure effectively resists external vibration and wind impact, avoiding equipment displacement and operational failure caused by external environmental interference.
2.3 Low Loss Energy-Saving Performance & High Operational Efficiency
Optimized with precise core lamination process and high-conductivity copper winding layout, this 34.5kV/35kV single-phase oil immersed transformer greatly reduces magnetic flux leakage and no-load loss. The overall power conversion efficiency is significantly higher than traditional old-fashioned pole-mounted transformers, effectively lowering long-term line loss and grid operation energy consumption. The stable low-temperature rise operation design avoids overheating aging during continuous load operation, ensuring efficient and energy-saving power supply throughout the equipment life cycle, which meets modern power grid energy-saving emission reduction and low-loss operation requirements.
2.4 Built-In Safety Protection & Stable Voltage Output
Equipped with internal overcurrent protection, overvoltage suppression and lightning surge resistance structures, this overhead distribution transformer can effectively resist instantaneous grid surge, lightning strike impact and sudden load fluctuation. The precision winding turn ratio calibration ensures stable 200V/400V/480V output voltage without obvious deviation, realizing balanced and safe power supply for terminal loads. The fully sealed oil tank structure prevents insulating oil deterioration and moisture intrusion, maintaining stable insulation performance and avoiding short-circuit and leakage faults caused by insulation failure.
2.5 Easy Installation & Low Maintenance Cost
Featuring integrated modular design and lightweight overall structure, this single-phase pole-mounted transformer can be quickly installed on utility poles without complex foundation construction, greatly shortening on-site construction cycle. The standard ONAN natural cooling mode requires no auxiliary fan equipment, with low failure rate of cooling system. Daily operation is basically maintenance-free, only requiring regular visual inspection of oil level and sealing status. The design service life reaches more than 30 years, with extremely low long-term operation and maintenance costs, providing high cost performance for grid operation and rural power supply projects.
3. Core Working Purposes
The core working purpose of the 34.5kV/35kV Input 200V/400V/480V Output Single Phase Pole Mounted Transformer is medium-voltage step-down conversion and terminal distributed power distribution for overhead power grids. It professionally converts 34.5kV and 35kV medium-high voltage electric energy from overhead transmission lines into standard low-voltage electric energy suitable for civilian life, small commercial equipment and single-phase industrial loads, realizing safe voltage grade conversion and reliable power transmission.
In actual power grid operation, this outdoor single-phase distribution transformer also undertakes key functions such as line voltage stabilization, load decentralized distribution and high-low voltage electrical isolation. It can effectively isolate high-voltage grid faults and surge interference, protect terminal low-voltage electrical equipment and users from overvoltage hazards. For scattered power supply areas and long-distance overhead line projects, it optimizes power distribution efficiency, reduces terminal voltage drop, and ensures stable and continuous power supply for decentralized loads, making up for the layout shortcomings of centralized power distribution equipment in remote areas.
4. Typical Application Scenarios
4.1 Rural & Remote Residential Power Supply
This single-phase pole mounted oil immersed transformer is the core equipment for rural power grid renovation and remote village power supply projects. For scattered rural households, mountainous residential areas and remote pastoral areas where centralized substation layout is not applicable, the pole-mounted installation method can flexibly cover decentralized power demand. Through 34.5kV/35kV overhead line step-down conversion, it outputs stable 200V and 400V civilian power, meeting daily lighting, household appliance and living power consumption of remote residents, solving the difficulty of power supply in scattered rural areas.
4.2 Suburban & Small Commercial Power Distribution
It is widely used in suburban street power distribution, rural roadside shops, small supermarkets, rural service stations and other small commercial scenarios. The 400V and 480V stable output can support commercial lighting, sales equipment and small office electrical load operation. The outdoor anti-corrosion and lightning-proof design adapts to open-air pole-mounted installation in suburban areas, ensuring safe and stable power supply for small commercial facilities with low load and decentralized distribution characteristics.
4.3 Remote Engineering & Field Equipment Power Supply
Suitable for field monitoring equipment, remote communication base stations, mountain engineering construction, road border monitoring and other outdoor field power supply scenarios. Many remote engineering projects only have 34.5kV/35kV medium-voltage overhead lines, and this multi-voltage single-phase transformer can convert high-voltage power into 200V, 400V or 480V power required by field equipment, providing long-term stable working power for unattended field equipment and remote monitoring systems.
4.4 Overseas Regional Grid Construction Projects
With dual 34.5kV/35kV input and full coverage of 200V/400V/480V international mainstream output voltages, this pole-mounted transformer is highly compatible with power grid standards in North America, Southeast Asia, Africa and other regions. It is widely used in overseas rural grid construction, regional power improvement and remote infrastructure power supply projects, becoming a universal single-phase power distribution solution for global overhead grid engineering.
4.5 Agricultural & Rural Auxiliary Equipment Power Supply
It is commonly applied to rural agricultural irrigation equipment, breeding farm auxiliary electrical equipment, rural solar supporting power distribution and other agricultural scenarios. The stable low-voltage output ensures normal operation of small agricultural machinery and irrigation equipment, and the outdoor durable structure adapts to complex rural field environments, providing reliable power guarantee for modern agricultural production and rural auxiliary facilities.
5. Frequently Asked Questions (FAQ)
Q1: What is the difference between 34.5kV and 35kV input versions of this single-phase pole mounted transformer?
The 34.5kV input model is mainly customized for North American standard overhead power grids, matching local medium-voltage line voltage specifications, while the 35kV version adapts to international universal medium-voltage grid standards used in Asia, Africa and most overseas engineering projects. In terms of performance, both versions adopt the same core manufacturing process, insulation level and energy-saving structure, with consistent output stability, loss index and environmental adaptability. Users only need to select the corresponding input voltage model according to the local actual overhead line voltage to ensure grid matching and safe operation.
Q2: How to choose the most suitable output voltage (200V/400V/480V) for on-site use?
The output voltage selection depends entirely on local grid standards and terminal load parameters. The 200V output is mainly used for civilian household power supply in specific regional rural grids and low-power single-phase equipment; 400V is the most widely used international general single-phase voltage, suitable for most small commercial and general industrial single-phase loads; 480V is specially designed for North American standard industrial equipment and local commercial power supply systems. We also support non-standard voltage fine-tuning and customized transformation ratio design for special on-site load requirements.
Q3: What are the advantages of pole-mounted single-phase transformers compared with ground-mounted distribution transformers?
This single-phase pole mounted transformer has obvious advantages in scattered power supply scenarios. It adopts overhead pole installation without occupying land resources and concrete foundation construction, greatly reducing project construction cost and site occupation. The outdoor integrated sealed structure is less affected by ground humidity and dust, with stronger anti-flooding and anti-corrosion ability. It features flexible installation position, short construction period and basically maintenance-free daily operation, which is more suitable for rural scattered residents, remote field equipment and long-distance overhead line power supply scenarios than traditional ground-mounted transformers.
