High Voltage Power Transformers up to 20 MVA Capacity
KROS Electric Co., Ltd. designs and manufactures high-performance power transformers specifically engineered for high-capacity electrical transmission, step-up/step-down sub-stations, and heavy industrial utility networks. With over 35 years of engineering authority, our power transformers are designed to withstand extreme electrical and thermal stresses while maintaining maximum energy efficiency.
Proven in demanding infrastructure and utility grid projects worldwide, KROS Electric Co., Ltd. has successfully delivered and exported power transformers up to 20 MVA to global markets. Every unit undergoes rigorous precision testing in accordance with IEC 60076, IEEE, and BIS standards to guarantee zero-downtime reliability for international B2B buyers.
Design Parameters & Key Specifications
Custom engineered to match precise client grid specs, ambient temperatures, and load profiles.
Key Features & Engineering Standards
KROS Electric Co., Ltd. power transformers utilize step-lap CRGO (Cold Rolled Grain Oriented) steel cores to minimize no-load losses and noise levels. Copper winders are insulated with high-grade electrical pressboard and immersed in high-dielectric mineral oil or ester fluid for thermal stabilization.
Technical Specifications Table
| Power Rating Range | 1 MVA up to 20 MVA |
|---|---|
| Primary Voltage Class | 11kV, 22kV, 33kV, 66kV, 110kV, 132kV |
| Frequency | 50 Hz / 60 Hz Global Compatibility |
| Cooling Type | ONAN / ONAF Air Forced Auxiliary |
| Vector Group | Dyn11, Ynd11, Dyn5 (Custom upon request) |
| Core Material | High Permeability Step-Lap CRGO Steel |
| Winding Conductor | Electrolytic High Grade Copper / Aluminum |
| Applicable Standards | IEC 60076, IEEE C57, IS 2026, BIS Standards |
Request Technical Datasheets & Export Catalog
Contact KROS Electric Co., Ltd. engineering department directly for full sub-station transformer specs, single line diagrams (SLD), and quotation.
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