Oil-type Transformer
Your Professional Oil-Type Transformer Supplier
The company has a professional production and research and development base in hebei province. The total factory area is 100,000 square meters, and the transportation is very convenient. It has strong technical research and development capabilities and has won 56 national patents. Our product include dry type transformer / oil immersed type transformer / cubicle-type substation / high and low voltage switch cabinet / ring main unit / ring box / low voltage distribution box / instrument / capacitance, reactance, instrument transformer / schneider licensing series.
Why Choose Us
Quality Assurance
The company strictly implements standards such as ISO9001 international quality management system, ISO14001 environmental management system and OHSAS18001 occupational health and safety management system, and has established a perfect management system.
OEM/ODM Solutions
When you share your requirements, our engineers will deliver customized solutions that are both faster and more efficient, tailored specifically to your needs.
Production Equipment
The company's products have complete qualifications and are equipped with advanced production and testing equipment such as CNC turret punch press, CNC shearing machine, CNC bending machine, laser cutting machine, fully automatic copper bar processing machine, fully automatic transformer test bench, pouring and drying.
Production Market
The company focuses on the Russian and Middle Eastern markets as well as Southeast Asia, and is currently completing cooperation with companies in Italy and Uzbekistan.
Advantages of Oil-Type Transformer
Superior Cooling Efficiency
Insulating oil offers excellent thermal conductivity and heat capacity, enabling the transformer to stay cool during high loads. According to ABB, oil-filled units often outperform dry-type transformers when it comes to sustained overloads.
01
High Power and Voltage Capacity
Oil-filled transformers can easily handle ratings above 5000 kVA, reaching into hundreds of MVA, making them ideal for grid guide-scale and industrial use.
02
Long Lifespan
Thanks to efficient cooling and sealed designs, these units can operate for 25–40 years when properly maintained.
03
Cost-Effectiveness
Despite periodic maintenance, oil-filled transformers typically offer lower lifetime costs due to better efficiency and durability.
04
Excellent Overload Tolerance
The oil’s thermal mass enables oil-immersed transformers to handle temporary spikes in demand more effectively than dry types.
05
Specification
|
Item |
Specification |
|
Model |
S22-1600/10 |
|
Rated Capacity |
1600 kVA |
|
Voltage Ratio |
10 kV / 0.4 kV |
|
Frequency |
50 Hz |
|
Vector Group |
Dyn11 or Yyn0 |
|
No-Load Loss |
≤ 1.40 kW |
|
Load Loss (75 ℃) |
≤ 13.60 kW |
|
No-Load Current |
≤ 0.6% |
|
Impedance Voltage |
6% |
|
Cooling Method |
ONAN |
|
Insulation Class |
A |
Types of Oil-Type Transformer
Oil Immersed Power Transformer
Designed for high-voltage applications, these are commonly used in power plants and substations to manage large-scale power distribution effectively.
Oil Immersed Distribution Transformer
Compact and optimized for delivering electricity to localized networks like residential neighborhoods, commercial areas, or small industrial zones.
Hermetically Sealed Transformer
These sealed units prevent contamination by keeping the oil completely enclosed, reducing risks of leaks and moisture degradation.
Conservator-Type Transformer
Equipped with a conservator tank, these manage oil expansion and contraction, enabling smooth operation under fluctuating loads.

Transformer Core
The core is the base of the transformer. It is usually made of thin steel sheets to lower energy loss from eddy currents. The core guides the magnetic flow, which helps transfer energy between the windings.
Windings
Windings are metal coils, often copper or aluminum, wrapped around the core. There are two types: primary and secondary. The primary winding takes in energy, and the secondary sends it out at a different voltage. The number of coil loops decides how much the voltage changes.
Transformer Oil
Transformer oil is very important for oil type transformers. It works as a coolant and an insulator. The oil moves through channels, taking away heat from the core and windings. This cooling is especially needed in big transformers to manage heat.
Oil-immersed transformers are used in many places. They work well for:
Power Generation and Transmission: Essential in power plants and high-voltage substations.
Industrial Facilities: Ideal for factories and plants with high load demand.
Distribution Networks: Common in both urban and rural substations.
Renewable Energy Projects: Used in solar farms and wind turbine applications.
Transportation Infrastructure: Employed in railway systems and traction substations.

Maintaining Oil Immersed Transformers
Routine maintenance is essential for keeping these units in optimal condition:
Oil Testing
Monitor for contaminants, moisture, and acidity regularly.
Cooling System
Inspect radiators, fans, and pumps to prevent overheating.
Winding Resistance Check
Regular resistance tests can detect early signs of wear.
Bushing Inspection
Ensure bushings are intact to avoid electrical discharge.
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