50kva 34.5kv to 120v/240v single phase Oil Immersed Transformer

50kva 34.5kv to 120v/240v single phase Oil Immersed Transformer

1. Product Description

The 50kVA 34.5kV to 120V/240V single phase oil immersed transformer is a professional medium-voltage single-phase distribution transformer designed for North American standard 34.5kV power grid systems. As a commonly used oil-filled step-down power transformer for residential and rural power distribution, this single phase 34.5kV 120/240V oil immersed transformer is engineered to convert high 34.5kV medium voltage grid power into dual 120V and 240V low-voltage output, fully matching the voltage standards of North American household electrical appliances, small commercial equipment and remote field power facilities. Manufactured strictly in accordance with ANSI/IEEE C57.12 series standards and CSA certification requirements, this oil immersed single phase distribution transformer adopts mature industrial design to adapt to overhead pole-mounted and ground pad-mounted installation scenarios.

Built with high-grade grain-oriented silicon steel core and pure copper winding coils, the 50kVA single phase 34.5kV to 120/240V oil immersed power transformer effectively reduces no-load loss and operational heat generation during long-term service. Adopting traditional mineral insulating oil immersion cooling and fully sealed tank structure, this low-capacity oil filled transformer isolates internal core and windings from external moisture, dust and air oxidation, ensuring stable insulation performance in outdoor complex environments. Different from three-phase transformers, this single-phase power transformation equipment features simple structure, low operating noise and flexible installation, making it the most practical solution for decentralized single-phase power supply in 34.5kV medium-voltage power grids.

2.  Technical Parameters

3. Core Purpose

The core purpose of the 50kVA 34.5kV to 120V/240V single phase oil immersed transformer is to provide safe, stable and standard single-phase voltage conversion for 34.5kV medium-voltage power distribution systems. This oil-filled single-phase step-down transformer solves the voltage mismatch between high-voltage overhead transmission lines and civilian single-phase electrical equipment, converting ultra-high 34.5kV grid voltage into standard 120V and 240V dual low-voltage output that fully complies with North American residential and commercial power supply standards.

In actual power grid operation, this single phase oil immersed distribution transformer undertakes key functions of voltage step-down, power stabilization and circuit isolation. It can effectively suppress grid voltage fluctuation and minor harmonic interference, maintain balanced 120V/240V dual-circuit output, and avoid electrical equipment damage caused by unstable voltage. Designed for small-capacity decentralized power loads, it provides continuous and reliable single-phase power guarantee for scattered users in rural areas, remote suburbs and field stations, ensuring safe and compliant power consumption for daily life and small commercial operations.

4. Application Scenarios

With low capacity, flexible installation and wide environmental adaptability, the 50kVA 34.5kV/120V/240V single phase oil immersed power transformer is widely used in North American standard single-phase power supply scenarios. It is the mainstream supporting equipment for 34.5kV rural and suburban power grid distribution projects:

• Residential Single-phase Power Supply: Suitable for scattered rural households, suburban single-family villas and remote residential areas. It provides standard 120V and 240V dual power supply for household lighting, household appliances and daily living electricity, fully meeting North American residential power consumption habits.

• Small Commercial Facility Power Distribution: Ideal for suburban small shops, street retail stores, small office rooms and community service booths. It stably supplies power for small commercial electrical equipment and office devices, ensuring continuous and stable commercial operation.

• Remote Field Station Power Supply: Applied in field monitoring stations, forestry observation points, highway roadside facilities and remote communication base stations. With excellent outdoor weather resistance, it supports long-term unattended power supply for field equipment.

• 34.5kV Rural Power Grid Construction & Renovation: Widely used in new construction and upgrading of North American rural medium-voltage power grids, replacing old inefficient transformers to improve power supply quality and reduce grid operation energy consumption.

• Temporary Outdoor Engineering Power: Adaptable for temporary power guarantee of small field construction, rural infrastructure maintenance and outdoor public facility renovation projects, featuring quick installation and stable load operation.

• Low-power Distributed New Energy Matching: Matched with small single-phase rooftop photovoltaic systems in rural areas, completing voltage conversion and grid-connected power distribution for decentralized new energy power generation equipment.

5. Product Features

This 50kVA 34.5kV to 120V/240V single phase oil immersed transformer adopts ANSI standard optimized design and mature manufacturing technology. It has prominent advantages in energy-saving performance, operational stability, environmental adaptability and installation flexibility, fully adapting to long-term outdoor operation requirements of 34.5kV medium-voltage single-phase power grids:

• Low Loss & Energy Saving Operation: Adopts high-permeability low-loss silicon steel core and high-purity copper winding, which effectively reduces no-load magnetic loss and load copper loss. The overall energy consumption is far lower than industry standard values, realizing long-term low-energy operation and reducing user’s grid operating costs.

• Dual Stable Voltage Output: Professional single-phase coil structure design ensures balanced and stable 120V and 240V dual low-voltage output. The built-in multi-grade off-circuit voltage regulator can adapt to regional grid voltage deviation, effectively avoiding voltage surge and ensuring terminal electrical equipment operates under rated voltage.

• Fully Sealed & Weather-resistant Structure: Integral fully sealed oil tank structure prevents insulating oil aging, moisture ingress and dust pollution. The whole machine adopts high weather-resistant anti-corrosion coating, resisting ultraviolet aging, rain erosion, frost and snow damage, suitable for all-weather outdoor operation.

• High Insulation & Operational Safety: Strict 34.5kV high-voltage insulation design with 150kV BIL lightning impulse withstand level provides excellent over-voltage and lightning protection capabilities. The equipment has strong short-circuit resistance and low failure rate, effectively ensuring power grid and terminal equipment safety.

• Low Noise & Environmentally Friendly: Optimized core vibration reduction structure and mute winding process greatly reduce operating noise, with operating sound lower than 48dB, meeting NEMA environmental protection standards and suitable for residential and suburban living areas.

• Flexible Installation & Low Maintenance: Compact lightweight structure supports both pole-mounted and pad-mounted installation, adapting to different site conditions. The fully sealed design requires no frequent oil replenishment, and standardized internal structure makes daily inspection and maintenance simple and convenient, lowering later operation costs.

6. FAQ (Frequently Asked Questions)

Q1: What are the differences between single-phase and three-phase oil immersed transformers in practical use?

This 50kVA 34.5kV 120/240V single phase oil immersed transformer is specially designed for single-phase low-power decentralized loads, different from three-phase transformers for large industrial centralized power supply. It can output dual 120V and 240V voltages at the same time, which perfectly matches North American household and small commercial power supply modes. It features simpler structure, lower no-load loss, lower operating noise and lower installation cost. For scattered rural households and small single-phase equipment loads, single-phase transformers have higher cost performance and more stable operation than three-phase models.

Q2: Can this 34.5kV single phase oil immersed transformer work stably in extreme outdoor weather?

Yes, this ANSI standard 50kVA oil immersed distribution transformer is fully optimized for harsh outdoor working conditions. The fully sealed oil tank completely isolates internal insulation components from external humid air, dust and corrosive substances, preventing insulation damp failure and oil deterioration. The high weather-resistant outer coating can resist long-term ultraviolet radiation, heavy rain erosion, low-temperature frost and high-temperature aging. With a wide operating temperature range of -40℃ to +45℃, it can operate continuously and stably in extreme cold and hot seasons, fully meeting long-term unattended outdoor power distribution requirements.

Q3: What daily maintenance work does a 34.5kV single-phase oil immersed transformer require?

This low-capacity oil immersed transformer has extremely low daily maintenance requirements, which is very suitable for remote unattended power supply points. Users only need to conduct regular visual inspection to check the oil tank for oil leakage and confirm the insulating oil level is within the standard range. Clean the dust and sundries on the radiator surface regularly to ensure unobstructed heat dissipation. Periodically test the insulation resistance of windings to avoid insulation aging failure. It is not necessary to replace insulating oil frequently under normal operating conditions. With simple standardized maintenance, the equipment service life can stably reach more than 20 years.