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Oil Immersed Transformers: A Benchmark of Durability and Performance
Oil Immersed Transformers: A Benchmark of Durability and Performance
Oil-immersed transformers are indispensable components in the energy infrastructure, designed to meet the rigorous demands of modern electrical systems. Built with a robust design and the highest quality standards, these transformers offer unmatched performance and reliability. With their ability to withstand short circuits and ensure low maintenance, they have become a preferred choice across industries.
Superior Design for Enhanced Reliability
Features of oil-immersed transformers
One of the standout features of oil-immersed transformers is their robust construction, specifically engineered to handle frequent short circuits. This durability is a result of continuous innovation by dedicated R&D teams. By leveraging advanced design techniques, such as the step-lap core configuration, these transformers minimize losses and optimize efficiency.
The use of high-grade Cold Rolled Grain Oriented (CRGO) steel in the core ensures superior magnetic properties. This material, combined with the availability of hydraulic core lifting facilities, allows for precise manufacturing and reduced operational losses. Windings, crafted from either copper or aluminum, use premium techniques such as Strip (PICC or CTC), wire, or foil methods, ensuring optimal conductivity and durability.
Uncompromised Quality and Longevity
Oil-immersed transformers are manufactured with a meticulous selection of raw materials, guaranteeing a long and virtually maintenance-free life. The integration of high-quality insulating fluids, such as mineral oil or silicone oil, adheres to international standards, including IS, IEC, and ANSI. For environmentally conscious applications, biodegradable ester-filled transformers are also available.
These transformers are designed to meet rigorous standards, including type tests for short-circuit, impulse voltage withstand, and temperature rise. Certifications from globally recognized testing facilities like KEMA, CPRI, and ERDA underline their reliability and safety.
Tailored to Diverse Applications
Oil-immersed transformers are versatile, catering to a wide range of requirements. Whether it is step-up or step-down applications, they deliver consistent performance. The transformers can be customized to various ratings, from three-phase models up to 66 kV 50 MVA to single-phase models up to 33 kV 333 kVA. Additionally, they support multiple vector group configurations, such as Dyn11, Yzn11, and Dd0, tailored to customer needs.
Cutting-Edge Features
- Cooling Systems: Standard cooling is ONAN (Oil Natural Air Natural), but advanced options like ONAF, OFAF, and OFWF are available for high-capacity applications.
- Accessories: Features like corrugated fin radiators, pressed steel radiators, and maintenance-free breathers enhance durability and functionality.
- Tappings: Off-circuit tap changers or on-load tap changers with automatic voltage regulating and remote control panels provide flexibility in voltage management.
- Terminations: Options include porcelain, cycloaliphatic, epoxy, or touch-proof plug-in type bushings, along with cable boxes or bus ducts.
- Safety and Monitoring: Advanced protection devices like DGPT2/DMCR for sealed transformers, RTD temperature sensors, and SCADA-compatible outputs ensure safety and operational efficiency.
Technical Specifications at a Glance
- Ratings: Three-phase up to 66 kV 50 MVA; Single-phase up to 33 kV 333 kVA
- Frequency: 50/60 Hz
- Standards: IS:1180, IS:2026, IEC:60076, ANSI 57
- Cooling Options: ONAN, ONAF, OFAF, OFWF
- Class of Insulation: A/B
A Commitment to Excellence
Every oil-immersed transformer is a testament to exceptional craftsmanship. From the tank, often crafted from mild or stainless steel, to the paint options like PU painting, powder coating, or galvanization, every detail ensures durability and aesthetics. These transformers are built to meet the diverse needs of industries while prioritizing efficiency and safety.
Conclusion
Oil-immersed transformers are more than just electrical equipment; they are a critical investment in reliable energy infrastructure. With cutting-edge technology, robust design, and customization options, these transformers set a benchmark in performance and longevity. Whether for industrial, commercial, or utility applications, oil-immersed transformers are the ultimate solution for efficient and safe power distribution.