13.2kv 137v 25kva 50kva 80kva Single Phase 50hz Oil Immersed Transformer
1. Product Overview
The 13.2kV 137V 25kVA 50kVA 80kVA Single Phase 50Hz Oil Immersed Transformer is a professional low-capacity single-phase power distribution transformer designed for 50Hz utility power systems. This versatile oil immersed electrical transformer covers three mainstream rated capacities including 25kVA, 50kVA and 80kVA, featuring high 13.2kV primary input voltage and customized 137V low secondary output voltage. Manufactured in compliance with IEC 60076 and IEEE C57 international industry standards, this single-phase step-down transformer adopts premium oil-immersed cooling and fully sealed structural technology, delivering stable voltage conversion performance for specialized single-phase power supply projects.
Engineered for reliable long-term operation, the 50Hz single-phase oil filled transformer uses high-conductivity copper windings and high-grade CRGO silicon steel core materials to minimize no-load loss and load operation consumption. Different from conventional general-purpose transformers, this 13.2kV to 137V distribution transformer supports precise low-voltage output, perfectly matching special electrical equipment and customized power distribution demands. With excellent weather resistance, low failure rate and maintenance-free design, it has become a popular choice for rural power grid upgrading, remote facility power supply and specialized industrial single-phase power systems across global markets.
2. Core Technical Parameters
This series of single-phase oil immersed transformers features diversified capacity options and standardized 50Hz frequency design, with accurate voltage matching and stable electromagnetic performance to adapt to various customized single-phase power distribution scenarios.
• Rated Capacity Range: 25kVA, 50kVA, 80kVA (three optional capacities for different low-load power demands)
• Primary Input Voltage: 13.2kV high voltage, compatible with standard 13.2kV single-phase overhead power grid systems
• Secondary Output Voltage: 137V customized low voltage, tailored for special low-voltage electrical equipment
• Rated Working Frequency: 50Hz fixed frequency, suitable for mainstream Asian, African and European power grid standards
• Phase Structure: Single-phase independent power conversion structure, no three-phase load imbalance risk
• Cooling Mode: ONAN oil-immersed natural air cooling, passive heat dissipation with low operating noise
• Insulation Type: Fully sealed mineral oil insulation, excellent moisture-proof and anti-aging performance
• Core Material: Cold rolled grain-oriented silicon steel sheet, ultra-low magnetic loss and high energy efficiency
• Winding Material: High-purity oxygen-free copper coil, strong conductivity and short-circuit resistance
• Operating Life: Up to 25 years of stable service life under standard 50Hz grid operating conditions
• Execution Standard: Compliant with IEC 60076, IEEE C57 and ANSI international power equipment standards
3. Core Product Uses
The50Hz Single Phase 13.2kV to 137V Oil Immersed Transformer is professionally used for high-to-low voltage conversion, precise power distribution and grid voltage stabilization in customized single-phase power supply systems. Its core function is to step down 13.2kV medium-high voltage overhead grid power to stable 137V low-voltage electricity, solving the voltage mismatch problem between conventional 13.2kV power grids and special 137V low-voltage electrical devices.
As a key specialized distribution transformer, it achieves safe electrical isolation between high-voltage lines and terminal equipment, effectively preventing equipment damage and circuit faults caused by grid voltage surges, fluctuations and short-circuit impacts. This low-loss oil filled single-phase transformer optimizes power transmission efficiency in decentralized power supply systems, reduces long-term line power consumption, and ensures stable and continuous power output for special low-power electrical facilities. It also serves as an essential voltage regulation device for customized power engineering projects, improving the overall safety and stability of specialized single-phase power distribution networks.
4. Wide Application Scenarios
With customized 137V low-voltage output, flexible capacity selection and stable 50Hz frequency adaptation, this 25kVA/50kVA/80kVA single-phase oil immersed transformer is widely applied in various specialized and decentralized single-phase power supply scenarios, covering civil renovation, agricultural engineering, industrial supporting and remote facility power supply fields.
4.1 Specialized Industrial Equipment Power Supply
This 13.2kV to 137V step-down transformer is ideal for powering special low-voltage industrial instruments, precision detection equipment, small industrial control devices and customized mechanical equipment that require stable 137V power supply. The 50Hz fixed frequency design ensures consistent operating parameters of precision equipment, avoiding operational errors caused by frequency or voltage instability.
4.2 Rural & Remote Power Grid Renovation
Suitable for rural scattered household power supply, remote village power grid upgrading and suburban decentralized power distribution projects. The compact single-phase oil immersed transformer adapts to 13.2kV rural overhead line layout, providing stable customized low-voltage power for rural daily electrical equipment and solving the problem of insufficient terminal voltage in long-distance single-phase power transmission.
4.3 Agricultural & Pastoral Engineering Facilities
Widely used for farmland irrigation supporting equipment, pastoral breeding monitoring systems, rural environmental detection devices and small agricultural auxiliary machinery power supply. The 25kVA, 50kVA and 80kVA multi-capacity models can flexibly match different agricultural load demands, adapting to long-term outdoor complex operating environments.
4.4 Outdoor Monitoring & Public Facilities
Perfect for remote road monitoring equipment, scenic area public facilities, field meteorological monitoring stations and suburban street auxiliary electrical systems. The maintenance-free oil immersed structure enables long-term stable outdoor operation, providing reliable 137V power guarantee for low-power public monitoring and service facilities.
4.5 Customized Small-Scale Power Projects
Applicable for customized single-phase power supply projects of small new energy auxiliary systems, independent community auxiliary power distribution and private small-power engineering. The precise 137V voltage output meets personalized power demand standards that conventional transformers cannot match, filling the market gap of specialized low-voltage power conversion equipment.
5. Superior Product Features
5.1 Customized Voltage & Fixed Frequency Adaptation
Different from universal transformers, this single-phase oil immersed transformer features exclusive 13.2kV high voltage step-down to 137V low voltage output, perfectly matching special low-voltage electrical equipment parameters. The fixed 50Hz frequency design ensures stable operation in standard 50Hz power grid systems, avoiding frequency deviation-induced equipment failure. Three optional capacities of 25kVA, 50kVA and 80kVA realize accurate load matching, effectively preventing power waste and insufficient capacity.
5.2 Ultra-Low Loss & High Energy Efficiency
Adopting high-performance grain-oriented silicon steel core and optimized electromagnetic circuit design, the equipment greatly reduces no-load loss and magnetic leakage loss during operation. The high-purity copper windings effectively lower load resistance and operating heat loss. Compared with traditional single-phase transformers, this 50Hz oil filled transformer has higher power conversion efficiency, significantly reducing long-term operational power consumption and user electricity costs, meeting global energy-saving and low-carbon standards.
5.3 Fully Sealed Maintenance-Free Structure
The all-welded fully sealed oil tank structure completely isolates internal insulating oil from external air, dust and moisture, preventing oil oxidation deterioration and insulation performance attenuation. There is no need for regular oil replacement, internal cleaning and routine insulation detection during daily operation, realizing long-term maintenance-free operation. This design greatly reduces later operation and maintenance workload and comprehensive project costs.
5.4 Strong Environmental Adaptability & Stable Outdoor Operation
The whole machine adopts anti-corrosion, rust-proof and UV-resistant surface treatment, which can adapt to harsh outdoor environments such as high temperature, low temperature, rain erosion and dusty weather. The natural oil circulation cooling system maintains stable heat dissipation effect in all seasons, with no overheating failure under continuous full-load operation. It supports 24/7 uninterrupted outdoor operation with strong environmental anti-interference ability.
5.5 High Safety & Reliable Protection Performance
Equipped with complete overvoltage, overcurrent, short-circuit and overload protection mechanisms, the transformer can automatically cut off the power supply in case of grid abnormalities or equipment faults, effectively protecting terminal electrical devices and line safety. The high-grade insulating material and reinforced winding structure provide excellent lightning impulse resistance and voltage surge resistance, ensuring safe and stable operation of single-phase power distribution systems for a long time.
5.6 Low Noise & Eco-Friendly Operation
Through optimized core lamination and symmetrical winding layout design, electromagnetic vibration and operating noise are effectively suppressed, achieving ultra-low noise operation that meets international environmental protection standards. The fully enclosed structure avoids insulating oil leakage pollution, with zero electromagnetic radiation and environmental pollution during operation, making it suitable for residential, scenic and ecological sensitive area power supply scenarios.
6. Frequently Asked Questions (FAQ)
Q1: How to select the correct capacity between 25kVA, 50kVA and 80kVA 13.2kV 137V single-phase transformer?
Capacity selection depends on actual equipment load and future expansion demand. Under a standard 0.8 power factor, the 25kVA model supports about 20kW effective load, suitable for single small monitoring equipment and individual household special power supply; the 50kVA model drives about 40kW load, ideal for multiple sets of low-power precision equipment and small agricultural facilities; the 80kVA model carries about 64kW load, applicable for centralized customized power supply of multiple terminal devices. It is recommended to reserve 15%-20% capacity margin to avoid long-term overload operation and extend transformer service life.
Q2: What are the unique advantages of 13.2kV to 137V single-phase oil immersed transformers compared with conventional voltage transformers?
Most conventional single-phase transformers adopt universal 220V, 240V or 400V output, which cannot meet the power demand of special 137V low-voltage precision equipment. This customized 13.2kV 137V oil immersed transformer features precise fixed low-voltage output, ensuring the normal operation of special electrical devices with strict voltage requirements. Meanwhile, the professional 50Hz frequency calibration design avoids frequency fluctuation, and the multi-capacity optional design solves the personalized power supply pain points of specialized engineering projects, which cannot be replaced by ordinary general-purpose transformers.
Q3: Can this 50Hz single-phase oil immersed transformer operate stably in humid and rainy outdoor environments?
Yes, this series of single-phase distribution transformers is professionally optimized for outdoor harsh working conditions. The fully sealed welded oil tank structure has excellent waterproof, moisture-proof and rainproof performance, which can effectively block rainwater and humid air from entering the equipment interior. The external weather-resistant coating resists ultraviolet aging and corrosion, and the internal insulating oil maintains stable insulation performance in high-humidity environments. It can operate continuously and stably in outdoor rainy, humid, high-temperature and low-temperature conditions all year round without frequent maintenance.
