66KV 2 Winding OLTC Three Phase Power Transformer

The 66KV Three Phase Power Transformer is an indispensable component in modern electrical grids, acting as the critical bridge between medium-voltage (MV) and high-voltage (HV) power systems. Its role in stabilizing electricity transmission and distribution makes it a cornerstone for industrial operations, utility networks, and renewable energy projects—where consistent, efficient power flow directly impacts productivity, cost savings, and grid resilience.

Engineered to adhere to the most stringent global standards—including IEC 60076 (International Electrotechnical Commission) and ANSI C57.12.00 (American National Standards Institute)—our 66KV three-phase transformers integrate cutting-edge technology to deliver uncompromised performance. A key differentiator lies in our low-loss design: we utilize high-grade grain-oriented silicon steel cores (with minimal magnetic hysteresis) and precision-wound copper windings (for optimal conductivity), reducing both load and no-load losses by up to 15% compared to industry averages. This translates to significant energy savings over the transformer’s 25+ year service life, aligning with global sustainability goals and lowering our clients’ operational costs.

Complementing its efficiency is a robust build tailored for harsh conditions. The transformer’s insulation system—available in Class A (for temperate environments) or Class H (for high-heat industrial settings)—is tested to withstand extreme temperature fluctuations (-30°C to 50°C), high humidity, and electrical stress, ensuring zero unplanned downtime even in heavy-industry or outdoor substation deployments. Additionally, advanced cooling systems (ONAN for low-load scenarios, ONAF for high-demand applications) maintain optimal operating temperatures, further extending component longevity.

Quality is non-negotiable in our manufacturing process. Every 66KV Three Phase Power Transformer undergoes a rigorous, multi-stage testing protocol before leaving our facility, including:

This commitment to quality has earned us certifications from global bodies (e.g., ISO 9001, CE, UL) and the trust of clients in sectors ranging from heavy manufacturing (steel mills, chemical plants) to renewable energy (wind/solar farms, where our transformers step up voltage for grid feed-in) and municipal utilities (supporting urban grid expansion).

Beyond standard designs, we offer fully customized 66KV three-phase solutions to meet unique project needs. Whether adjusting voltage ratios for regional grid requirements, integrating fire-retardant enclosures for urban substations, or modifying cooling systems for remote mining sites, our team of 50+ senior electrical engineers collaborates with clients to deliver turnkey solutions—backed by on-site installation support and 24/7 global after-sales service.

As a leading manufacturer with over 30 years of experience in high-voltage power equipment, we don’t just build transformers—we engineer reliability. Our 66KV Three Phase Power Transformers power critical infrastructure across 40+ countries, proving their ability to perform under pressure, reduce carbon footprints, and deliver long-term value. For businesses and utilities seeking a partner that combines technical expertise, global standards, and tailored support, our 66KV transformers are the gold standard for power distribution excellence.