S9 11kv 33kv 50/60hz 5000kva Oil Immersed Transformer

To bring a smooth user experience to overseas clients, Wenzhou XiFa Electrical Power Equipment Co., Ltd believes it is not enough to produce a reliable 11kv 33kv 50/60hz 5000kva oil immersed transformers. More important, the sales manager will track production progress to ensure s9 11kv 33kv 50/60hz 5000kva oil immersed transformers will be delivered on time. Furthermore, Wenzhou XiFa will take factory acceptance test to each oil immersed transformer, meanwhile, the witness will be welcomed from clients. Additionally, the complete export document will be send with 11kv 33kv 50/60hz 5000kva oil immersed transformers and through email to clients.

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Product Description

The S9 11kv 33kv 50/60hz 5000kva Oil Immersed Transformer is built with high quality cold rolled grain oriented silicon steel to achieve excellent magnetic performance. The core adopts a multi step fully mitered joint design with an optimized cross sectional structure, which helps to improve efficiency and reduce losses. Advanced cutting equipment is used during production to ensure precise processing and strict control of core burrs. The winding system and insulation structure are developed to use enhanced design concepts that improve electrical performance, strengthen short circuit withstand capability, and reduce both no load and load losses.

S9 11kv 33kv 5060hz 5000kva Oil Immersed Transformer

Technical Specification:

Product Name		s 9 11kv 33kv 50/60hz 5000kva oil immersed transformer
Transformer Type		Oil Immersed Power Transformer
Rated Capacity		5000 kVA or 5 mVA
Rated Frequency		50 Hz or 60 Hz
Voltage Ratio		33 kV / 11 kV
Insulation Level		AC 70 kV/ LI 170 kV BIL
Vector Group		Yd11
Tap Changer	Type	Off Line/On Line Tapping Changer
	Range	±22.5%;±32.5%
No Load Loss		5.40 kW± 15%
Load Loss at 75℃		33.03 kW± 15%
Impedance		7%±10%

Product Features:

1. The 11kv 33kv 50/60hz 5000kva oil immersed transformer is high operational reliability with advanced technical performance and well balanced economic efficiency.

2. The core utilizes a stepped three section joint structure with a special surface coating treatment to enhance minimize energy losses and operating noise.

3. An improved winding arrangement combined with optimized oil circulation channels and upgraded insulation design enhances mechanical strength and increases resistance to short circuit stresses.

4. The core of 11kv 33kv 50/60hz 5000kva oil immersed transformer is manufactured from cold rolled silicon steel laminations, while the windings are made from high purity oxygen free copper. The product is developed to use proven engineering principles and advanced manufacturing techniques.

5. Every design and manufacturing process is validated through comprehensive type testing to ensure consistent quality and performance.

6. Custom design and manufacturing services are available to meet specific project requirements. The s 911kv 33kv 50/60hz 5000kva oil immersed transformer is suitable for power transmission and distribution networks, industrial facilities, mining operations, utility substations, and a wide range of commercial and end user applications.

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 a 125kva 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.