15KVA 50KVA 100KVA Oil Transformer Three Phase Transformer Electrical Transformer

15KVA 50KVA 100KVA Oil Transformer Three Phase Transformer Electrical Transformer

1. Product Overview

The 15KVA 50KVA 100KVA Oil Transformer Three Phase Transformer Electrical Transformer Price covers the most popular small and medium capacity three-phase oil immersed electrical transformers widely adopted in global civil and industrial power distribution systems. Manufactured in strict accordance with IEC 60076 international standards and national power equipment specifications, this series of oil type distribution transformers features mature manufacturing craftsmanship, stable operating performance and cost-effective pricing, becoming the preferred power transformation equipment for small-scale power supply renovation, rural grid upgrading and on-site temporary power projects.

This three-phase oil transformer includes three mainstream rated capacities of 15KVA, 50KVA and 100KVA, fully covering low-power load scenarios that are common in daily power distribution. Adopting traditional and reliable mineral oil immersion cooling technology, the equipment uses high-purity insulating oil as heat dissipation and insulation medium, which can effectively reduce operating temperature and prevent high-voltage insulation breakdown. Different from dry-type electrical transformers, this oil immersed three-phase transformer has better heat resistance, overload tolerance and outdoor environmental adaptability, supporting long-term continuous operation under harsh working conditions.

As a professional factory supplier of low and medium voltage power transformation equipment, we provide transparent and competitive electrical transformer price for 15KVA, 50KVA and 100KVA models. All finished transformers undergo strict factory testing including partial discharge test, voltage withstand test and load operation test to ensure stable quality, low failure rate and long service life. This series of oil transformers is widely exported to Southeast Asia, Africa, Europe and other regions, well recognized for its reliable performance and affordable overall cost.

2. Main Technical Parameters

Below is the standardized technical parameter table for 15KVA, 50KVA and 100KVA three-phase oil immersed electrical transformers. All parameters comply with international power grid access standards, supporting engineering design, project bidding, on-site installation and routine acceptance:

3. Core Product Features

This series of 15KVA, 50KVA and 100KVA three-phase oil transformers integrates energy-saving design, reliable structural technology and cost-effective manufacturing, with comprehensive advantages in operational stability, safety, environmental adaptability and later maintenance, suitable for various low and medium power distribution scenarios:

3.1 Energy-saving Low Loss Design

The core adopts high-permeability grain-oriented cold-rolled silicon steel sheets with full oblique lap joint technology, which effectively suppresses magnetic flux leakage and reduces iron loss during long-term standby operation. The internal copper winding adopts dense and uniform winding process, minimizing copper loss under rated load. Compared with traditional old-model electrical transformers, this oil immersed transformer series has lower no-load and load loss, effectively reducing daily power consumption and line loss for power users, with prominent energy-saving effects.

3.2 Reliable Oil Immersed Insulation & Heat Dissipation

Filled with high-purity non-PCB mineral insulating oil, the three-phase oil transformer forms a natural circulating heat dissipation system. The standard ONAN cooling mode enables automatic heat exchange without auxiliary cooling equipment, ensuring uniform heat dissipation of windings and iron core even after long-term continuous operation. The fully sealed oil tank structure isolates internal insulating oil from external air and moisture, avoiding oil oxidation, emulsification and insulation aging, and maintaining stable insulation performance all year round.

3.3 Stable Voltage Output & Strong Anti-interference

Equipped with standard off-load voltage tapping adjustment function, the equipment can calibrate input voltage deviation within ±5% range to ensure stable 400V low-voltage output. The professional Dyn11 vector group design effectively balances three-phase current, suppresses grid harmonic interference and voltage fluctuation, and adapts to dynamic load changes of civil and small industrial power loads. It can resist instantaneous grid voltage surge and ensure high-quality power supply.

3.4 Durable Structure & Wide Environmental Adaptability

The whole machine adopts thickened steel plate welding structure and anti-corrosion spray treatment, with excellent waterproof, dustproof, rust-proof and aging-resistant performance. It can operate stably in outdoor open-air environments, humid workshops and suburban power distribution stations, adapting to complex climate conditions such as high temperature, low temperature and rainy weather. The reinforced internal structure has strong seismic and anti-vibration capabilities, not easy to deform during long-term operation.

3.5 Low Maintenance & Cost-effective Price

This series of oil immersed electrical transformers features simple mechanical structure and few vulnerable parts, with extremely low daily failure rate. The fully sealed maintenance-free design reduces the frequency of insulating oil replacement and equipment inspection, greatly saving later operation and maintenance costs. Meanwhile, relying on factory direct sales mode, we offer transparent and competitive electrical transformer price for 15KVA, 50KVA and 100KVA models, helping customers reduce project procurement investment.

3.6 High Safety & Fault Resistance

Each three-phase oil transformer is equipped with standard safety accessories including oil level gauge, temperature detector and pressure relief valve. It can monitor operating oil level and temperature in real time, and automatically release pressure to avoid equipment damage in case of overheating and internal faults. The high-strength winding structure has strong short-circuit impact resistance, which can effectively reduce grid fault risks and improve the overall safety of power distribution system.

4. Core Product Uses

As basic core equipment of medium and low voltage power distribution systems, 15KVA, 50KVA and 100KVA three-phase oil transformers undertake key power conversion and power guarantee tasks, supporting stable operation of various small and medium power consumption scenarios:

Medium to Low Voltage Step-down Conversion: The core function is to convert 6kV/10kV/11kV medium-voltage grid electric energy into 400V low-voltage usable electric energy, realizing safe voltage matching between overhead transmission lines and terminal electrical equipment, and solving the voltage adaptation problem of civil and small industrial power loads.

Regional Decentralized Power Distribution: It is suitable for decentralized power distribution of small-area power consumption units, reasonably distributing grid electric energy according to actual load demand, effectively balancing three-phase load current, and avoiding power supply instability caused by unbalanced load and excessive line voltage drop.

Grid Voltage Stabilization & Power Quality Optimization: By adjusting the no-load tap position, it calibrates system voltage deviation caused by seasonal load changes and line loss, stabilizes terminal voltage within the standard range, optimizes power supply quality, and ensures normal operation of household electrical equipment and small industrial machinery.

Power Grid Fault Isolation & Safety Protection: It isolates the upper medium-voltage power grid and lower low-voltage power consumption system, preventing high-voltage fault surges from spreading to the terminal power consumption side, reducing equipment damage rate and grid fault range, and improving the safety and stability of regional power distribution network.

Long-term Continuous Power Supply Guarantee: Relying on excellent heat dissipation performance and load resistance, the oil transformer supports 24-hour uninterrupted operation, meeting the long-term stable power demand of rural residential areas, suburban facilities and small industrial sites.

5. Wide Application Scenarios

With diverse capacity options, stable performance and affordable electrical transformer price, this three-phase oil transformer series is widely used in civil power distribution, small industrial power supply, engineering temporary power and grid renovation projects worldwide:

5.1 Rural & Residential Power Grid Projects

15KVA and 50KVA oil immersed transformers are very suitable for rural decentralized power supply, village power grid upgrading and suburban residential area power distribution. They solve the problems of insufficient power supply capacity and unstable voltage in rural old grids, ensuring stable daily power consumption for residents.

5.2 Small Industrial & Workshop Power Supply

50KVA and 100KVA three-phase oil transformers are widely used in small processing workshops, light industry factories, small machinery processing plants and individual industrial parks. They can fully meet the power demand of small production equipment and auxiliary electrical facilities, adapting to long-term stable industrial power consumption.

5.3 Municipal & Public Facility Power Distribution

This series of electrical transformers is applicable to power supply of street lighting, community supporting facilities, scenic area equipment, rural water pumps and township public utilities. The low-noise and stable operation performance will not affect the living and public service environment.

5.4 Construction & Temporary Engineering Power

With strong environmental adaptability and convenient installation, 15KVA to 100KVA oil transformers are commonly used for temporary power guarantee of construction sites, road engineering, municipal renovation projects and field operation projects, providing reliable power support for short-term engineering construction.

5.5 Remote Area & Off-grid Auxiliary Power

Suitable for power distribution of remote mountainous areas, pastoral areas and isolated small power consumption points. The oil immersed structure is dust-proof, moisture-proof and weather-resistant, which can adapt to harsh outdoor environments and solve the power supply problem of remote decentralized users.

6. Frequently Asked Questions (FAQ)

Q1: How to choose 15KVA, 50KVA or 100KVA three-phase oil transformer for actual projects?

The capacity selection mainly depends on the actual peak power load and future power consumption growth demand. The 15KVA oil transformer is suitable for ultra-small load scenarios such as single village centralized power supply, individual public facilities and small water pump equipment. The 50KVA model is the most cost-effective option for ordinary rural communities, small workshops and municipal supporting power distribution, balancing load capacity and electrical transformer price. The 100KVA three-phase oil transformer is suitable for small industrial parks, concentrated residential areas and engineering projects with large power consumption and certain load expansion demand. All three capacities adopt the same manufacturing standard and structural design, with consistent safety and environmental adaptability.

Q2: What are the advantages of oil immersed three-phase transformer compared with dry-type transformer?

This three-phase oil immersed electrical transformer uses insulating oil for circulating heat dissipation, with better heat resistance and overload tolerance than dry-type transformers. It can withstand short-term peak overload operation and long-term outdoor high-temperature operation, with lower operating temperature and more stable performance. In addition, the oil type transformer has simpler structure, lower manufacturing cost and more competitive electrical transformer price, and is more suitable for outdoor open-air installation and ordinary industrial and civil power distribution scenarios. Although it requires regular oil quality inspection, the overall later maintenance cost is far lower than that of dry-type equipment.

Q3: What daily maintenance does 15KVA-100KVA oil immersed electrical transformer need?

This series of fully sealed oil transformers belong to low-maintenance power equipment. In daily use, users only need to regularly check the oil level and sealing condition to prevent insulating oil leakage, clean the radiator surface dust to ensure normal heat dissipation, and observe whether the operating voltage and current are balanced and stable. Avoid long-term overloaded operation to prevent accelerated insulation aging. It is recommended to conduct a comprehensive insulating oil quality test and internal performance inspection every 2-3 years. With standardized use and simple maintenance, the equipment can stably operate for more than 25 years, greatly reducing long-term project replacement and maintenance costs.