Three-phase American transformers (US transformers) are typically designed with 60Hz as a baseline to optimize their electromagnetic parameters (such as magnetic flux density, core cross-sectional area, and number of turns). When applied to a 50Hz power grid system, directly using the original design will result in increased magnetic flux and iron losses (eddy current losses and hysteresis losses) at the same voltage, potentially leading to core overheating, decreased efficiency, increased noise, and even magnetic saturation.
Therefore, to ensure full compatibility and efficient operation with 50Hz power grids in South America and other regions, we have specifically redesigned or adjusted the core. The main measures include:
Increasing the core cross-sectional area: to reduce the operating magnetic flux density and avoid saturation.
Optimizing the silicon steel sheet material and lamination process: using lower-loss silicon steel sheets and potentially adjusting the lamination factor to control iron losses.
Recalculating winding parameters: adjusting the number of turns to adapt to the new electromagnetic relationships, ensuring voltage ratio and performance stability.
A comprehensive review of temperature rise and cooling design was conducted to ensure that additional losses generated at 50Hz are effectively dissipated, and that temperature rise is controlled within limits.
After the above optimizations, the transformer can maintain comparable efficiency, temperature rise, lifespan, and reliability in 50Hz systems to that in 60Hz systems, achieving full compatibility.
Is it necessary to adjust the core design for the South American 50Hz system?
Entering the South American transformer market, in addition to frequency differences, we encountered the following issues:
Complex and diverse power grid standards and conditions:
Inconsistent voltage levels and standards: Voltage levels may differ between countries and even between different regions within the same country (e.g., 11kV, 13.2kV, 13.8kV, 34.5kV, etc.), and grid connection standards and short-circuit level requirements vary.
Inconsistent power grid quality: Some regions experience large power grid fluctuations and high harmonic content, placing higher demands on the transformer's shock resistance, overload capacity, and harmonic suppression design.
Stringent Environmental Adaptability Requirements:
Diverse Geography and Climate: From the high altitudes of the Andes Mountains (low air pressure, strong UV radiation) to the high temperatures and humidity of the Amazon basin, and the salt spray corrosion of coastal areas, transformers require broader environmental adaptability and higher protection levels.
Limited Installation and Maintenance Conditions: Some areas are sparsely populated and have inconvenient transportation, demanding high levels of maintenance-free operation, reliability, and fault warning capabilities.
Increasingly stringent energy efficiency standards necessitate early compliance with local energy regulations.
We have established a standardized product series specifically for the South American 50Hz power grid, covering mainstream voltage levels and incorporating adaptive designs for typical environments such as high altitude, high temperature, and high humidity.
We offer flexible optional solutions, such as reinforced insulation, anti-corrosion coatings, sealed designs, on-load tap changers, and intelligent monitoring interfaces, to meet specific project needs.
We enhance simulation calculations to ensure optimal product performance under 50Hz and local power grid conditions.
Cost Optimization and Localization Strategy:
We provide clear cost comparisons of different configurations to help customers balance budget and performance. Breaking through certification and compliance barriers:
Assisting clients in obtaining mandatory certifications and energy efficiency labels in key target markets (such as Brazil, Chile, and Argentina).
