33 11kv 0.4kv 300kva Oil Immersed Type Transformer

To develop a solid business relationship with clients, Wenzhou XiFa Electrical Power Equipment Co., Ltd is not only through producing 33 11kv 0.4kv 300kva oil immersed type transformer, but also through supplying global technical support. WenZhou XiFa Electrical Power Equipment Co., Ltd would support online commissioning support within 24 hours, Furthermore, Wenzhou XiFa Electrical Power Equipment Co., Ltd would send factory trained engineers to the local to provide necessary technical support for power transmission acceptance.

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Product Description

Advantages of Oil Immersed Transformers:

In practical applications,33 11kv 0.4kv 300kva oil immersed type transformers offer several advantages that make them widely used across industrial and utility sectors.

1. Efficient Heat Dissipation

The insulating oil continuously transfers heat generated during operation,which helps to maintain stable internal temperatures and supporting reliable performance over extended periods of service.

2. Dependable Insulation Performance

The insulating oil provides a consistent dielectric medium throughout the 33 11kv 0.4kv 300kva oil immersed type transformer,which improves insulation strength and contributes to the safe operation of internal components.

3. Extended Service Life

Effective temperature management combined with the protection provided by quality insulating materials helps reduce component aging and supports long term operational reliability.

4. Strong Overload Capability

Under specified operating conditions,33 11kv 0.4kv 300kva oil immersed type power transformers can accommodate loads above their rated capacity for limited periods,which offers greater flexibility in situations where demand temporarily increases.

These characteristics have made 33 11kv 0.4kv 300kva oil immersed power transformers a preferred solution for many industrial power distribution systems and infrastructure projects. When selecting a 300kva oil immersed transformer, it is important to ensure that its technical specifications are aligned with the requirements of the application. Factors such as voltage level, power rating, and installation environment should all be carefully considered to achieve optimal performance.

Advances in materials and manufacturing technologies have also contributed to the ongoing development of modern oil immersed power transformers. The use of lower loss magnetic core materials helps improve energy efficiency, while refined oil circulation and cooling designs can reduce the amount of insulating oil required without compromising performance. As a result, today's oil immersed power transformers deliver higher efficiency and improved environmental performance compared with earlier generations.

A clear understanding of these technical features enables users to make more informed decisions and select equipment that best suits their operational needs.

33 11kv 0 4kv 300kva Oil Immersed Type Transformer

Technical Specification:

Product Name		33 11kv 0.4kv 300kva oil immersed type transformer
Transformer Type		Oil Immersed Distribution Transformer
Rated Power		300 kVA
Max. Working Voltage		12kV; 36kV
Power Frequency Withstand		70 kV
Lightning Impulse Withstand		170 kV BIL
Vector Group		Dyn11 or Yyn0
Tap Changer	Type	Off Circuit Tap Changer
	Range	2.5% per level, Five to seven steps for total
Efficiency		≥98%
Impedance		4.5% ± 10%

Product Features:

1. Efficient Cooling Performance

125kva 35kv 400v oil immersed transformers use insulating oil as the primary cooling medium in modern electricity system. As the oil circulates naturally within the transformer, it transfers heat away from the windings and core,which allows excess thermal energy to dissipate effectively. This efficient cooling process helps maintain stable operating temperatures during continuous service and contributes to a longer equipment lifespan, compare with dry type transformers.

2. Excellent Insulation Capability

In addition to its cooling function, insulating oil provides a high level of electrical insulation.In a125kva 35kv 400v oil immersed transformers, it creates a reliable barrier between high voltage and low voltage components,which reduces the risk of electrical faults, flash overs, and short circuits. The oil also helps distribute electrical stress more evenly within oil immersed transformer to protect internal insulation systems and to improve overall operational safety.

3. Compact and Robust Construction

The design of a 125kva 35kv 400v oil immersed transformer allows key components to be integrated into a relatively compact structure,which helps to reduce installation space requirements. The sealed steel tank protects the internal assembly from moisture, dust, and other environmental influences to ensure dependable performance under a wide range of operating conditions.

4. Easy Maintenance and Serviceability

Maintenance procedures are generally straightforward due to the practical tank design. When inspection, servicing, or component replacement is required, technicians can access the internal parts through the tank opening. The presence of insulating oil also helps preserve internal components by minimizing contamination and simplifying routine maintenance activities.

5. Energy Efficiency and Environmental Benefits

125kva 35kv 400v oil immersed transformers are designed to operate with low energy losses,which helps users to reduce power consumption and operating costs. Optimized oil circulation and heat dissipation contribute to quieter operation by minimizing noise and vibration levels. As a result, 125kva 35kv 400v oil immersed transformers provide an efficient and environmentally responsible solution for modern power distribution systems.

125kva 35kv 400v Oil Immersed Transformer

Technical Specification:

Product Name		125kva 35kv 400v oil immersed transformer
Transformer Type		Oil Immersed Distribution Transformer
Rated Capacity		125 kVA
Highest Voltage		40.5 kV
Lightning Impulse Withstand		200 kV
Power Frequency Withstand		80 kV
Vector Group		Dyn11; Yyn0
Tap Changer	Type	De-Energized Tap Changer
	Range	±5% in 2.5% steps
Efficiency		≥ 98%
Impedance (Uk)		4%±10%

Market Prospects for Oil Immersed Transformers:

According to the latest report from Global Market Insights Inc., the global oil immersed power transformer market is expected to reach USD 25.1 billion by 2034. Compared with USD 14.1 billion in 2024 and an estimated USD 15.1 billion in 2025, the market is projected to grow at a compound annual growth rate of 5.8 percent. The steady growth of the oil immersed transformer market is mainly driven by three factors:

1. Grid Modernization Projects

Many countries are upgrading and expanding their power networks, creating strong demand for new transformers. In 2023, the United States Department of Energy allocated USD 18 million to support the development of more durable and energy efficient oil immersed transformers.

2. Rapid Growth of Renewable Energy

The expansion of wind and solar power is accelerating transformer demand worldwide. Meanwhile,Europe plans to invest USD 555.5 billion in grid upgrades by 2040 to support the integration of offshore wind projects. Ever More, the Asia Pacific region also offers significant growth potential. By 2030, renewable energy is expected to account for around 25 percent of global power generation capacity.

3. Rising Electricity Consumption

Global electricity demand continues to increase as economies grow and industries expand.

In China, electricity consumption exceeded one trillion kilowatt hours in a single month for the first time, roughly equivalent to Japan's annual power consumption. In April 2024, Brazil signed contracts worth USD 4.06 billion for new transmission lines and substations. Across Africa, electricity demand is growing by about 4 percent annually, driven by industrial development and cross border grid connections.

These trends are creating long term opportunities for oil immersed transformers and supporting sustained market growth worldwide.