12kv Oil Immersed Transformer

For demanding industrial power distribution applications requiring robust and reliable voltage transformation, the 12kV oil immersed transformer stands as a proven solution. These units are engineered to handle the electrical loads of factories, large commercial facilities, and utility networks. As a specialized type of 12kv Industrial Transformer, they provide the necessary step-up or step-down functionality for medium-voltage systems. The core and windings are immersed in high-grade insulating oil, which serves a dual purpose: it provides superior electrical insulation and dissipates the heat generated during operation through efficient convective cooling. This design ensures long-term operational stability, even under continuous heavy loads. When selecting a power distribution asset, an Electric Power Transformer of this class offers an optimal balance of performance, durability, and cost-effectiveness. The inherent design principles of an Industrial Oil Immersed Transformer make it exceptionally suitable for both indoor substations and outdoor installations, providing a versatile backbone for electrical infrastructure.

The design and construction of the 12kv Oil Immersed Transformer prioritize safety, efficiency, and longevity. The tank is meticulously fabricated from welded steel plates, rigorously tested to be completely leak-proof, and often treated with corrosion-resistant coatings for outdoor durability. Internally, the magnetic core is built from high-permeability, low-loss grain-oriented silicon steel laminations, which are precisely stacked and clamped to minimize no-load losses and audible noise. The windings, either concentric cylindrical or layered, utilize copper or aluminum conductors with high-temperature insulation paper. Key operational parameters and technical specifications for standard models are detailed below to illustrate the product's capabilities.

Standard Technical Specifications

• Rated Primary Voltage: 12kV or other medium voltages as required.
• Rated Frequency: 50Hz or 60Hz.
• Cooling Method: ONAN (Oil Natural Air Natural).
• Insulation Level: LI 75kV AC 28kV (Lightning Impulse/ Power Frequency Withstand Voltage).
• Temperature Rise Limits: Oil: 55K, Winding: 65K (by resistance).
• Tanking Protection: IP54 standard for outdoor use; other ingress protection levels available.
• Standards Compliance: Designed and tested in accordance with IEC 60076, IEEE C57.12.00, and other relevant international standards.

Standard Accessories & Features

• Conservator tank with oil level indicator.
• Silica gel breather for moisture absorption.
• Pressure relief device for internal fault protection.
• Dial-type temperature indicator with contacts for alarm and trip signals.
• Lifting lugs and rollers for transportation and installation.
• Earthing terminals.
• Low-voltage and high-voltage cable boxes.