Oil Immersed Three-Phase Power Transformer 30kVA 50kVA Rated Capacity 400V 415V Output 50Hz
1. Product Description
The oil immersed three-phase power transformer 30kVA 50kVA is a high-reliability industrial distribution transformer designed for 50Hz AC power systems, featuring standard 400V and 415V output voltage options to match global low-voltage power distribution standards. As a mainstream low-capacity oil-filled electric transformer in the power transmission and distribution industry, this series covers two core rated capacities of 30kVA and 50kVA, which are the most widely used specifications for small and medium power load scenarios.
Manufactured with high-quality silicon steel sheets and pure copper winding coils, this three-phase oil immersed transformer adopts a fully sealed oil-immersed cooling structure. The internal insulating oil serves dual functions of heat dissipation and insulation, effectively reducing operational temperature rise and eliminating electrical breakdown risks. Different from dry-type transformers, this oil immersed power transformer boasts stronger thermal stability and overload resistance, supporting long-term continuous operation in complex outdoor and industrial environments. All products comply with international electrical safety standards, with stable output voltage and low power fluctuation, ensuring consistent power supply quality for terminal electrical equipment.
2. Core Product Uses
This 50Hz low-voltage oil immersed transformer focuses on voltage conversion and power distribution, mainly stepping down high-voltage grid electricity to standard 400V/415V usable industrial and commercial voltage, realizing safe and stable power transmission for terminal loads. Its core function is to balance grid voltage fluctuations, stabilize three-phase current output, and reduce power loss during power transmission, which is essential for low-voltage power distribution systems.
The 30kVA oil immersed transformer is suitable for light-load power supply scenarios with small power consumption, while the 50kVA oil immersed electric transformer caters to medium-load working conditions with higher power demand and intermittent peak loads. Both models can effectively isolate grid voltage, protect downstream electrical machinery, lighting systems and power distribution equipment from overvoltage and undervoltage damage, and improve the overall safety and stability of the power system. In addition, this energy-saving oil immersed distribution transformer can reduce no-load loss and load loss, helping users save long-term power operation costs and achieve efficient power utilization.
3. Typical Application Scenarios
With compact structure, strong environmental adaptability and low maintenance cost, the 30kVA 50kVA three-phase oil immersed power transformer is widely applicable in civil, commercial, industrial and agricultural power supply fields, covering most small and medium low-voltage power distribution scenarios.
3.1 Industrial Production Scenarios
It is commonly used in small processing workshops, mechanical processing factories, light industry production lines and small factory power distribution rooms. The 50kVA oil immersed transformer can stably supply power for small mechanical equipment, assembly lines and workshop integral electrical systems, adapting to intermittent load changes and short-term overload operation in industrial production. Its excellent heat dissipation performance ensures stable operation even in high-temperature factory environments.
3.2 Commercial & Civil Building Scenarios
This 400V 415V output electric transformer is an ideal power distribution device for small office buildings, community supporting facilities, shopping stores, restaurants and residential cluster power supply. The 30kVA model perfectly matches the daily power consumption of small commercial venues and rural residential areas, providing stable three-phase power for building lighting, air conditioning and daily electrical equipment.
3.3 Agricultural & Rural Power Supply
It is widely applied in rural grid renovation, farm irrigation systems, grain drying equipment and agricultural breeding base power supply. The outdoor waterproof and corrosion-resistant design of the oil-filled three-phase transformer can adapt to harsh outdoor environments such as high humidity and dust in rural areas, solving the problem of unstable voltage in rural remote power supply points.
3.4 Communication & Remote Station Power Supply
For remote communication base stations, monitoring stations and small outdoor power stations, this 50Hz oil immersed power transformer provides reliable independent power guarantee. Its strong anti-interference ability can resist external electromagnetic interference, ensuring the stable operation of communication equipment and monitoring systems, and it is also suitable for temporary power supply of engineering construction sites.
4. Outstanding Product Features
4.1 Stable Voltage Output & Low Power Loss
Adopting high-permeability silicon steel sheet core and optimized winding technology, this 30kVA 50kVA three-phase transformer effectively reduces no-load current and iron loss. The overall power transmission efficiency is up to 98%, with extremely low operation energy consumption. The output 400V/415V three-phase voltage is balanced and stable, with small voltage fluctuation, which can perfectly adapt to 50Hz global standard power frequency and meet the precise power supply requirements of various terminal equipment.
4.2 Excellent Heat Dissipation & Overload Resistance
The oil immersed cooling system adopts a scientific circulation design, with insulating oil efficiently conducting and dissipating heat generated during operation. Compared with ordinary transformers, this oil-filled electric transformer has larger thermal capacity, can withstand short-term overload operation, and will not generate excessive temperature rise under peak load conditions. It supports long-term continuous operation in ambient temperatures from -20℃ to +45℃, with strong environmental adaptability.
4.3 Durable Sealed Structure & Low Maintenance
The fully sealed tank body design isolates internal insulating oil from external air and moisture, effectively preventing oil deterioration, oxidation and water ingress. This structure avoids common faults such as insulation aging and oil leakage, greatly extending the service life of the three-phase oil immersed power transformer. The product has a long maintenance cycle, no need for frequent oil replacement and internal inspection, which greatly reduces daily operation and maintenance costs for users.
4.4 Strong Safety & Anti-Interference Ability
The product is equipped with multiple safety protection mechanisms, including overvoltage protection, overcurrent protection and short-circuit resistance. It has excellent insulation performance and strong short-circuit impact resistance, which can effectively avoid equipment damage and power failure accidents caused by grid faults. In addition, the overall electromagnetic shielding design reduces external electromagnetic interference, ensuring stable operation in complex electrical environments.
4.5 Flexible Specification & Wide Compatibility
Dual rated capacities of 30kVA and 50kVA are available for selection, matching different power load demands. The standard 400V and 415V output voltages are compatible with most industrial, commercial and civil electrical equipment worldwide. The compact and integrated structure is easy to install and fix, suitable for indoor and outdoor installation scenarios, with high flexibility of engineering application.
5. Frequently Asked Questions (FAQ)
Q1: What is the difference between 30kVA and 50kVA oil immersed three-phase transformers in actual use?
The core difference lies in the maximum bearable load power and application scenarios. The 30kVA oil immersed transformer is suitable for light-load scenarios with stable power consumption and no large peak load, such as rural residential power supply, small shops and single small mechanical equipment. The 50kVA model has a larger load capacity, can bear short-term peak power consumption and intermittent heavy load operation, and is more suitable for small factories, multi-equipment workshops and medium-sized commercial venues. In terms of power consumption, the two models both have low no-load loss, and the 50kVA transformer has a slightly higher rated power but no excessive idle power consumption, with high cost performance for medium-load scenarios.
Q2: Can this 400V/415V 50Hz oil immersed power transformer work outdoors in rainy and humid environments?
Yes, it can adapt to outdoor complex environments stably. This three-phase oil immersed electric transformer adopts a fully sealed anti-corrosion tank body and waterproof structural design, with good moisture-proof, rain-proof and dust-proof performance. The internal insulating oil and sealed structure can effectively isolate humid air and rainwater, preventing insulation performance degradation and internal component corrosion. It can operate normally in high humidity, rainy and dusty outdoor environments, and is widely used in outdoor power distribution points, farmland power supply and communication base station scenarios. It is only necessary to ensure a flat installation foundation and avoid long-term water immersion at the bottom of the equipment.
Q3: What daily maintenance work does the 30kVA 50kVA oil-filled transformer need?
This series of fully sealed oil immersed transformers has extremely low maintenance requirements, saving users a lot of daily maintenance costs. Conventional daily maintenance only needs to complete regular visual inspection: check whether the equipment has oil leakage, whether the shell is deformed or rusted, and whether the terminal connection is loose. It is recommended to check the oil level and insulation performance every 1-3 years, and replace the insulating oil if it deteriorates. Unlike open-type transformers, it does not need frequent oil supplementation and internal cleaning. As long as it operates within the rated load and standard environment, the equipment can maintain a service life of more than 20 years stably.
