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.

 

 
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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
 
01/

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.

02/

Oil Immersed Distribution Transformer
Compact and optimized for delivering electricity to localized networks like residential neighborhoods, commercial areas, or small industrial zones.

03/

Hermetically Sealed Transformer
These sealed units prevent contamination by keeping the oil completely enclosed, reducing risks of leaks and moisture degradation.

04/

Conservator-Type Transformer
Equipped with a conservator tank, these manage oil expansion and contraction, enabling smooth operation under fluctuating loads.

 

Oil-immersed Transformer 35KV Series

 

Key Components of Oil-Type Transformer

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.

 

 

Applications of Oil-Immersed Transformers

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.

Oil Immersed Transformer S11 Series

 

Maintaining Oil Immersed Transformers

Routine maintenance is essential for keeping these units in optimal condition:

1

Oil Testing

Monitor for contaminants, moisture, and acidity regularly.

2

Cooling System

Inspect radiators, fans, and pumps to prevent overheating.

3

Winding Resistance Check

Regular resistance tests can detect early signs of wear.

4

Bushing Inspection

Ensure bushings are intact to avoid electrical discharge.

 

Shipping

 

 

productcate-795-498

 

FAQ

Q: What are the advantages of oil-filled transformers?

A: Oil-filled transformers are more efficient than dry-type transformers, which are larger and have a lower voltage rating. Thus, the dry types are more prone to overheating during overload, resulting in higher electrical losses and maintenance costs.

Q: What is an oil type transformer?

A: An oil-type transformer, also known as an oil-immersed or oil-filled transformer, is an electrical transformer where the core and windings are submerged in insulating oil to provide both cooling and electrical insulation. The oil absorbs heat generated during operation, dissipates it to the tank and surrounding environment, and prevents electrical breakdown, making these units efficient for high-power applications, particularly those used outdoors in power distribution networks.

Q: What is the life expectancy of an oil filled transformer?

A: The typical lifespan of an oil-filled transformer is around 20-30 years, but some high-voltage models that are kept in pristine conditions can last 50 or 60 years!

Q: What is the working principle of oil filled transformer?

A: Oil-immersed transformers work mainly on the principle of electromagnetic induction. It is suitable for power grid transformation of urban and rural, industrial and mining enterprises, and more suitable for combined transformers and transformers for prefabricated substations.

As one of the leading oil-type transformer manufacturers in China, we warmly welcome you to wholesale high quality oil-type transformer made in China here from our factory. For more information, contact us now. oil immersed power transformer, oil immersed transformer parts, oil filled transformer overload capacity

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