Oil Immersed Manufacturer
Are You Looking For Oil Immersed？
CHBEB is one of the professional transformer manufacturers in China, specializing in high-quality oil immersed transformers for diverse industrial and commercial applications. As a leading China-based transformer factory, our company designs and manufactures transformers in various capacities and configurations to meet different customer requirements. We also offer tailored solutions to ensure reliable performance and energy efficiency. Contact us today to request a free quote or more information.
REQUEST A QUOTE FOR MORE DETAILS
All You Need to Know About Oil immersed transformers
Oil immersed transformers are key components in power systems. They use oil for insulation and cooling. These transformers can handle high voltages and large power capacities. They are common in power plants, substations, and industrial settings. The oil in these transformers serves multiple purposes. It insulates electrical parts, cools the core and windings, and protects against moisture. Oil immersed transformers are efficient and can last for many years with proper maintenance. They come in various sizes and ratings to suit different needs. These transformers can be used outdoors, making them versatile. Regular oil testing and maintenance are important for their performance. Understanding oil immersed transformers is crucial for anyone working with electrical systems. They play a vital role in our power infrastructure.
Advantages of Oil immersed transformers
Excellent Cooling Capability
Oil absorbs heat from core and windings. It circulates to transfer heat to the tank surface. This keeps the transformer cool under heavy loads, allowing high power capacities.
High Overload Capacity
These transformers handle short-term overloads well. Oil distributes heat evenly, allowing operation above rated capacity for brief periods. This helps manage sudden power demands.
Long Lifespan
Oil protects internal components from moisture and oxygen. This slows insulation aging. With proper maintenance, these transformers can operate reliably for decades.
Suitable for Outdoor Installation
Oil-filled tanks protect against environmental factors. These transformers withstand various weather conditions, making them versatile for different installation locations.
Cost-Effective for High Power Ratings
For high power applications, oil immersed transformers are often cheaper to manufacture. This makes them popular for high-voltage and high-power uses.
Better Voltage Regulation
Oil helps maintain consistent temperatures throughout the transformer. This leads to more stable voltage output, beneficial for applications requiring steady voltage supply.
How Do Oil Immersed Transformers Work?
What Are Oil Immersed Transformers Used For?
Oil immersed transformers have many uses in power systems. Power plants use them to increase voltage for long-distance transmission. Substations use these transformers to adjust voltage levels in power grids. They help distribute electricity to homes and businesses. Industries rely on them for powering large equipment. Renewable energy projects use these transformers to connect to the grid. They play a key role in railway electrification systems. Cities use them in their power infrastructure. Oil immersed transformers are good for outdoor use. They can handle high power and voltage efficiently. Their cooling system allows them to manage heavy loads. These features make them suitable for various applications in the electrical power industry.
Design and Planning
Engineers design the transformer using specialized software. They consider factors like voltage ratings, power capacity, and efficiency requirements.
Core Manufacturing
Workers make the core from thin sheets of silicon steel. They cut and stack these sheets to form the transformer’s magnetic circuit.
Winding Production
Technicians create windings using copper or aluminum wire. They insulate the wire and wind it around a former to make coils.
Assembly of Core and Windings
Workers carefully place the windings over the core. They add insulation between different parts to prevent electrical faults.
Tank Fabrication and Assembly
Manufacturers build a steel tank to hold the core, windings, and oil. They ensure the tank is strong and leak-proof.
Oil Filling and Treatment
Workers fill the tank with high-quality mineral oil. They treat the oil to remove moisture and gases.
Testing and Quality Control
Technicians perform various tests to ensure the transformer meets all safety and performance standards before shipping.
Oil Immersed Transformer Designs: Factors to Consider
1.Power Rating
The power rating determines the transformer’s capacity. It affects the size of the core and windings. Engineers must choose the right rating for the intended application.
2.Voltage Levels
Input and output voltage levels are crucial. They influence the number of turns in the windings. Designers must ensure proper insulation for the chosen voltage levels.
3.Cooling System
The cooling system is vital for transformer performance. Options include natural oil circulation or forced oil cooling. The choice depends on the transformer’s size and load requirements.
4.Core Material
The core material affects efficiency. Silicon steel is common. Designers may choose different grades based on performance needs and cost considerations.
5.Winding Material
Copper and aluminum are the main options for windings. Each has pros and cons. The choice impacts cost, efficiency, and size of the transformer.
6.Insulation System
The insulation system protects against electrical breakdown. It includes oil and solid insulation materials. Designers must select materials suitable for the operating conditions.
7.Tank Design
The tank holds the core, windings, and oil. Its design must ensure proper cooling and protection. Factors include size, shape, and material strength.
8.Accessories and Monitoring Equipment
Designers must include necessary accessories. These may include bushings, tap changers, and monitoring devices. They help in operation, maintenance, and safety of the transformer.
Oil Immersed Transformers By Cooling Method
Oil immersed transformers use different cooling methods based on their size and application. These methods are classified into four main types
Supply Oil Immersed Transformers By Capacity Range
Low Capacity (Up to 500 kVA)
These transformers are suitable for small businesses and residential areas. They handle local power distribution. Low capacity transformers are compact and easy to install.
Medium Capacity (501 kVA to 5 MVA)
Medium capacity transformers serve larger commercial buildings and small industrial facilities. They offer a balance between power and size. These units are often used in urban substations.
High Capacity (5.1 MVA to 100 MVA)
High capacity transformers are used in heavy industries and large power networks. They can manage significant power loads. These transformers often need special transportation and installation.
Oil Filled
Oil Immersed
Oil Filled vs Oil Immersed Transformers
Oil Filled Transformers
CHBEB offers oil filled transformers for distribution systems, with tanks fully filled with insulating oil that acts as both coolant and insulator. These compact, sealed units are ideal for various distribution applications and include expansion tanks for oil volume changes.
Oil Immersed Transformers
As its name suggests, the ball inside the valve is floating. Consequently, it is only supported by two seats made from a soft elastomeric material. This is the most common ball valve design. A stem connected at the top of the ball makes the quarter turn. Furthermore, the seat allows for better leak tightness. Because of its design, the floating type can be shut off in a bi-directional manner.
Types of oil immersed transformers
Manufacturers group oil immersed transformers by phase type. They can be single-phase, three-phase, or Scott-T type.
Single-Phase
This transformer has one primary and one secondary winding. It suits homes and small businesses. It is simple and lower in cost for light loads.
Three-Phase
This transformer has three sets of windings. It fits factories and cities needing more power. It offers better power quality and cost savings for big loads.
Scott-T
This transformer changes three-phase power into two-phase. It is rare but useful in some industries. It helps balance loads and fix power issues.
Oil Immersed Transformers: Why Voltage Rating Matters
The voltage rating of a transformer—especially oil immersed transformers—directly determines its input/output capacity and the environments in which it can operate safely and efficiently. Here’s how different voltage levels apply in real-world power systems:
33/11kV oil immersed transformers are widely used in regional substations. They step down high-voltage electricity to medium voltage, making it suitable for urban power distribution networks.
11kV oil immersed distribution transformers are ideal for medium-voltage users such as industrial plants, residential communities, and commercial complexes.
35kV oil immersed transformers are commonly deployed to connect power plants or high-voltage transmission grids. These are suitable for large-scale power transmission and heavy industrial applications.
Dry Type vs Oil Immersed Transformers
Dry Type Transformer
CHBEB’s dry type transformers use air or solid insulation, eliminating fire hazards and environmental risks associated with oil. Unlike oil-immersed transformers, they require minimal maintenance and are ideal for indoor installations. With robust construction, they ensure reliable performance in commercial, industrial, and high-moisture environments. CHBEB’s transformers are favored for their safety and low environmental impact, making them perfect for applications where dependable, eco-friendly power distribution is essential.
Oil Immersed Transformers
CHBEB’s oil immersed transformers use oil for cooling and insulation, ensuring efficient heat dissipation and high capacity for demanding applications. Unlike dry type transformers, they are suited for outdoor installations, minimizing electrical losses and preventing internal arcing. Regular oil maintenance is required to ensure optimal performance, and careful handling prevents environmental hazards from leaks. CHBEB’s transformers are favored for their cost-effectiveness and reliability in industrial and utility settings where superior cooling is critical.
Request A free quote
We'd like to work with you
- +86 15558785111
- chbebgroup@chbebpower.com
- +86 15558785111
What We Do
CHINA BEI ER BIAN (CHBEB) GROUP, with 218 million in registered capital, originated from Beijing Beierbian Transformer Group. Headquartered in Beijing for R&D, it operates major production bases in Nanjing and Yueqing, producing high-quality products.
Latest Product
address
BeiJing
No 3，RongJing East Road，BeiJing Economic Technological Development Area，BeiJing，China
JiangSu
No 7️Xiangfeng Road，Jiangning，NanJing，JiangSu，China
WenZhou
No.211, Wei 16 Road, Industrial Zone, Yueqing, Wenzhou, Zhejiang, China.
XiangYang Industrial Zone ，YueQing，WenZhou，ZheJiang，China
contact us
- chbebgroup@chbebpower.com
- +86 13057780111
- +86 13057780111
- +86 15558785111
Copyright © Bei Er Bian Group
