10kV and 20kV Series Oil-Immersed (Special) Power Transformers Oil-immersed power transformers are critical components in electrical power distribution and transmission systems, designed to efficiently step up or step down voltage levels while ensuring reliable performance. The 10kV and 20kV series oil-immersed (special) power transformers are engineered for medium-voltage applications, offering robust construction, high efficiency, and long-term operational stability. Design and Construction These transformers feature a core-and-coil assembly immersed in high-quality insulating oil, which serves as both a coolant and dielectric medium. The core is typically made of high-grade, grain-oriented silicon steel to minimize hysteresis and eddy current losses, ensuring high energy efficiency. The windings are constructed from copper or aluminum conductors, insulated with durable materials to withstand electrical and thermal stresses. The tank is fabricated from corrosion-resistant steel, with reinforced sealing to prevent oil leakage and external contamination. Radiators or cooling fins are integrated to enhance heat dissipation, maintaining optimal operating temperatures even under heavy loads. Key Features 1. High Efficiency – Optimized core and winding designs reduce no-load and load losses, complying with international efficiency standards (e.g., IEC 60076). 2. Reliability – Robust insulation systems and high-quality materials ensure long service life with minimal maintenance. 3. Safety – Equipped with pressure relief devices, Buchholz relays, and temperature monitoring systems to prevent faults and ensure safe operation. 4. Flexibility – Customizable designs for special applications, including tropicalized versions, seismic resistance, or harmonic mitigation. 5. Low Noise – Advanced core construction and vibration damping reduce audible noise, making them suitable for urban installations. Applications These transformers are widely used in: - Industrial plants for machinery and equipment power supply. - Renewable energy systems (solar/wind farms) for grid integration. - Mining and oil & gas sectors where harsh environmental conditions exist. - Commercial complexes and infrastructure projects requiring stable power distribution. Standards and Testing Manufactured in compliance with IEC, IEEE, or other regional standards, each unit undergoes rigorous testing, including: - Turns ratio and polarity verification. - Insulation resistance and dielectric strength tests. - Short-circuit and temperature rise evaluations. Conclusion The 10kV and 20kV oil-immersed (special) power transformers provide a dependable solution for medium-voltage power distribution, combining efficiency, durability, and adaptability for diverse industrial and commercial applications. Their robust design ensures stable performance in demanding environments, making them a preferred choice for modern electrical networks.