4000kVA Three Phase Electrical Oil-Immersed Distribution Transformer Insulation

Oil-immersed transformer is a kind of power transformer which uses insulating oil as cooling and insulating medium and is widely used in transmission and distribution system. Its core and winding are soaked in insulating oil, with good heat dissipation and insulation properties, suitable for medium and high voltage power systems. 

It is usually made of laminated silicon steel sheets with high permeability to reduce hysteresis and eddy current losses. Provide magnetic circuit, support winding, to ensure the efficient transfer of magnetic flux.

The oil-immersed transformer realizes efficient and reliable electric energy conversion and distribution through the cooperative work of insulating oil, iron core, winding, fuel tank, cooling device and protection device. Its structural design and material selection fully consider the heat dissipation, insulation and energy loss and other factors to ensure the long-term stable operation of the transformer in the medium and high voltage power system. 

Through reasonable design, manufacture and maintenance, oil-immersed transformers can provide a strong guarantee for the safe, reliable and efficient operation of the power system.

Product Parameter Table

Features of 4000kVA Three Phase Electrical Oil-Immersed Distribution Transformer Insulation

Function: The insulating oil serves as both an electrical insulator and a cooling medium.

Properties: High dielectric strength to prevent electrical breakdown. Excellent thermal conductivity to dissipate heat generated by the windings and core. 

Chemical stability to resist oxidation and degradation over time. Low viscosity for efficient circulation and cooling.

Types: Mineral oil or synthetic esters are commonly used.

The insulation system is designed to:Resist moisture absorption, which can degrade dielectric strength.Prevent contamination from dust, dirt, or other foreign particles.

Features:Sealed tank design with breathers or desiccant filters to maintain oil purity.Regular oil testing and filtration to maintain insulation quality.

Advatages of 4000kVA Three Phase Electrical Oil-Immersed Distribution Transformer Insulation

Resistance to Electrical Stress: The oil-immersed design provides excellent resistance to electrical stress, making it suitable for high-voltage applications.

Thermal Stability: The oil's thermal properties help maintain stable operation even under varying load conditions.

Durability and Longevity: The oil-immersed design protects internal components from moisture, dust, and other environmental contaminants, which can degrade insulation over time.

Corrosion Resistance: The oil prevents oxidation and corrosion of the transformer's core and windings, ensuring long-term performance.

Energy Efficiency: The efficient insulation and cooling system contribute to lower energy losses, improving overall efficiency.

Noise Reduction: The oil helps dampen noise generated by the transformer, making it suitable for installations where noise levels are a concern.

Applications of 4000kVA Three Phase Electrical Oil-Immersed Distribution Transformer Insulation

Mining Operations

Application: Powers heavy equipment, conveyors, and processing machinery in mining operations.

Insulation Advantage: The robust insulation system is resistant to dust, moisture, and mechanical vibrations, making it suitable for challenging mining environments.

Water Treatment Plants

Application: Powers pumps, motors, and control systems in water treatment and wastewater facilities.

Insulation Advantage: The oil-immersed insulation system is resistant to moisture and contaminants, ensuring reliable operation in wet environments.

Marine and Offshore Applications

Application: Used on ships, offshore platforms, and ports to power electrical systems.

Insulation Advantage: The oil-immersed insulation provides protection against saltwater corrosion and ensures reliable operation in marine environments.

Emergency Backup Systems

Application: Integrated into backup power systems for critical facilities like hospitals, airports, and military installations.

Insulation Advantage: The transformer's insulation ensures high reliability and quick response during power outages or emergencies.

FAQ of 4000kVA Three Phase Electrical Oil-Immersed Distribution Transformer Insulation

1.What are the advantages of oil-immersed insulation?

High Dielectric Strength,Efficient Cooling,Environmental Protection,Durability.

2.Is the insulation system fire-resistant?

While mineral oil is flammable, modern oil-immersed transformers include safety features such as:Pressure Relief Devices,Fire-Resistant Materials,Bund Walls.

3.Can the transformer operate in high-humidity areas?

Yes, the oil-immersed insulation system is designed to:Resist moisture ingress.

Maintain dielectric strength even in humid conditions.

4.How does the insulation system compare to dry-type transformers?

Oil-Immersed Transformers:Higher dielectric strength,Better cooling efficiency.

More cost-effective for high-capacity applications.

Dry-Type Transformers:No oil, making them safer for indoor use.

Lower maintenance but less efficient for high loads.

5.Can the transformer be used in renewable energy systems?

Yes, the insulation system is suitable for renewable energy applications because:

It can handle variable loads from solar, wind, or hydropower systems.

It is designed to operate reliably in diverse environmental conditions.