Oil Immersed Transformer 11kv to 0.4kv 800kva

Wenzhou XiFa Electrical Power Equipment Co., Ltd is not only a reliable manufacture to produce Oil Immersed Transformer 11kv to 0.4kv 800kva, but also it supply service to power companies, EPC contractors and industrial users to achieve reliable power supply, reduce energy consumption and ensure that projects are put into operation on schedule. Wenzhou XiFa aims to reduce operation costs in making low loss 11kv to 0.4kv 800kva oil immersed transformers, meanwhile, the factory could produce more than 50 pieces of 800 kva oil immersed transformers within 30 days to ensure project completion on schedule with reliable delivery times.

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Product Description

A Oil Immersed Transformer 11kv to 0.4kv 800kva is a power transformation device that uses insulating oil to control operating temperature and maintain reliable performance. The active parts of the 11kv to 0.4kv 800kva oil immersed transformer are housed inside a welded steel tank filled with insulating oil. The oil serves both as a cooling medium and as an electrical insulation medium, which allows heat generated during operation to be transferred away efficiently and safely dissipated. According to cooling methods and capacity ratings, oil immersed transformers are generally classified into naturally cooled oil immersed transformers and forced air cooled oil immersed transformers, which is also called ONAN and ONAF, respectively.

Main Components of an Oil Immersed Transformer:

1. Magnetic Core

The magnetic core provides the path for magnetic flux and forms the central part of the11kv to 0.4kv 800kva oil immersed transformer. It enables the transfer of electrical energy between windings through electromagnetic induction.

2. Windings

The windings generate the magnetic field required for voltage transformation. They are made from conductive coils wound around the core, of which the windings are insulated using specialized paper materials and protective insulating layers. As the operating voltage increases, thicker insulation is applied to ensure adequate dielectric strength and operational safety.

3. Transformer Tank

The transformer tank houses the core and windings to provide mechanical protection for the internal assembly. Bushings mounted on the tank allow the windings to be connected to the power system while maintaining proper insulation. Radiators attached to the tank increase the external surface area, which improves heat dissipation and enhances cooling performance.

4. Insulating Oil

Insulating oil fills the interior of the tank and performs two essential functions. It provides electrical insulation between energized components and acts as a cooling medium. During operation, the oil circulates naturally or through assisted flow paths around the windings and core assembly. It carries heat away from hot spots and transfers to the tank and radiators where it is released into the surrounding environment.

Oil Immersed Transformer 11kv To 0 4kv 800kva

Technical Specification:

Product Name		11kv to 0.4kv 800kva oil immersed transformer
Rated Capacity		800 kVA
High System Voltage		12 kV
Rated Primary Voltage		11 kV±2×2.5%
Rated Secondary Voltage		400 /230 V
Tap Changer	Type	DETC or OLTC
	Range	±2×2.5%, 5 Positions
Efficiency		≥ 99%
Impedance		4.5% with±10% tolerance
Max Temperature		≤50 ℃
Relative Humidity		95%

Key Advantages of Oil Immersed Transformers

1. Excellent Insulation Performance

11kv to 0.4kv 800kva oil immersed transformers offer outstanding electrical insulation due to the high dielectric strength of insulating oil. The oil also provides effective heat dissipation. It makes oil immersed transformers well suited for high voltage and high power applications.11kv to 0.4kv 800kva oil immersed transformers are widely used in power transmission networks, industrial facilities, and substations where reliable operation under demanding electrical conditions is required.

2. Efficient Cooling and Long Service Life

The cooling capability of insulating oil helps maintain stable operating temperatures even under heavy loading conditions.Compare with dry type transformers, it allows oil immersed transformers to handle sustained overloads more effectively and contributes to a longer operational life. With proper maintenance, many oil immersed transformers remain in service for two to three decades.

3. Cost Effective Solution

For the same power rating, oil immersed transformers are generally more economical to manufacture than cast resin transformers. Their lower initial investment cost makes them an attractive choice for utilities, industrial projects, and infrastructure developments seeking a balance between performance and budget.

4. Reliable Operation in Harsh Environments

11kv to 0.4kv 800kva oil immersed transformers are designed to perform reliably in challenging operating conditions,which includes areas with high ambient temperatures and dusty surroundings. Their robust construction and strong resistance to external disturbances help ensure stable and dependable power distribution in demanding environments.