Custom 345kV Fully Insulated Power Transformer Engineering & EHV Manufacturing

This field-deployed landmark installation showcases a custom 345kV fully insulated power transformer engineered and manufactured by Yawei Transformer for ultra-high voltage (UHV) and large-capacity power transmission systems. Designed for bulk power grids and high-voltage substation applications, this 345kV/250MVA autotransformer represents a major achievement in advanced electrical engineering.

To optimize insulation performance under extreme voltage stress, our engineering team applied advanced 3D electric field simulation technology. The core utilizes premium low-loss grain-oriented silicon steel and staggered conductors to effectively reduce eddy current losses and maintain extremely low no-load loss levels.

The transformer successfully passed full factory testing, including long-term induced voltage tests with partial discharge (PD) measurement. Fully compliant with IEEE C57, ANSI, IEC, and CSA standards, this unit ensures high operational safety, thermal stability, and long-term grid reliability under demanding transmission conditions.