High-Quality Three-phase oil-immersed transformer Suppliers, Exporters

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High-Quality Three-phase oil-immersed transformer Suppliers, Exporters

An oil-immersed transformer is a type of transformer that uses insulating oil as both insulation and cooling medium, changing voltage through the principle of electromagnetic induction. It mainly consists of an iron core, windings, and an oil tank, and has advantages such as small size, low cost, strong weather resistance, and low noise. It is widely used in power systems and industrial and mining enterprises to reduce high voltage to the low voltage required by users.

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Product Description

Structural Composition

The main components of an oil-immersed transformer include:

Core: Made of stacked silicon steel sheets, it forms the transformer's magnetic circuit.

Windings: Includes the primary winding (high-voltage side) and the secondary winding (low-voltage side), immersed in insulating oil.

Tank: A sealed, welded steel tank that holds the oil, core, and windings.

Oil Consolidator: Located above the tank, it expands the oil in the tank to accommodate temperature changes.

Radiator: Dissipates heat from the tank.

Insulating Bushings: Used to insulate the high-voltage and low-voltage leads, facilitating connection to external circuits.

Tap Switch: Used to adjust the transformer's output voltage, typically located inside the tank.

Other Components: Such as breather, explosion-proof conduit, gas relay, thermometer, etc.

Operating Principle

Oil-immersed transformers operate based on the principle of electromagnetic induction.

When an AC power source is connected to the primary winding, an alternating magnetic field is generated, which is transmitted through the iron core. This magnetic field induces an electromotive force in the secondary winding, thereby changing the voltage.

Key Advantages

Good heat dissipation: The insulating oil, acting as a cooling medium, provides high heat dissipation efficiency.

Low noise: The transformer oil acts as a buffer, reducing operating noise.

Economical and durable: It has low manufacturing costs and a long service life.

Strong weather resistance: Suitable for both indoor and outdoor use, with excellent adaptability.

Application Areas

Power Systems: As a distribution transformer, it reduces high voltage to the low voltage required by users.

Industrial and Mining Enterprises: Provides reliable power to industrial and civil buildings.

Research Departments: Extensively used for high-voltage testing equipment.

Product Display

Three-phase oil-immersed transformer (2)

Three-phase oil-immersed transformer (3)

Three-phase oil-immersed transformer (4)

Three-phase oil-immersed transformer (5)

Frequently Asked Questions

What are the primary benefits of an oil-immersed transformer?

Oil-immersed transformers offer superior heat dissipation, operate with very low noise, and are highly cost-effective and durable for long-term use in various environments.

Can these transformers be installed outdoors?

Yes, they are designed with strong weather resistance, making them suitable for both indoor industrial settings and rugged outdoor distribution networks.

How does the cooling system function?

The core and windings are submerged in insulating oil, which absorbs heat and transfers it to the tank walls and radiators for efficient dissipation into the surrounding air.

What is the purpose of the oil consolidator?

The oil consolidator (or conservator) provides extra space for the oil to expand or contract as its temperature changes during operation, preventing pressure buildup.

What safety features are included?

Common safety components include gas relays to detect internal faults, breathers to manage moisture, and explosion-proof conduits to protect the tank integrity.

How is the output voltage adjusted?

A tap switch, typically located inside the tank, is used to adjust the transformer's turn ratio, allowing for the fine-tuning of the output voltage to meet specific requirements.