Desing System
Current transformers for next-generation smart energy systems
• EV charging – supporting fast, accurate load measurement.
• Renewable energy – enabling integration into smart grids
• Industrial automation – ensuring operational safety.
• Strict compliance with IEC standards (61869 / 62053).
• Support for digital, decentralized, bidirectional energy flows.
• High permeability and low core loss angle → reduces amplitude and phase error, improving measurement accuracy.
• DC bias tolerance → just keep avoid saturation.
• Excellent thermal stability → consistent performance in all conditions.
• Compact core design → integration in space-limited devices.
[1] R. Hilzinger and W. Rodewald, Magnetic materials: fundamentals, products, properties, applications. Erlangen: Publicis Publishing, 2013.
[2] EPCOS Data Book 2013 - Ferrites and Accessories. [Online]. Disponível em: link
[3] Ficha Técnica do Aço Elétrico com Grão Orientado. [Online]. Disponível em: link
• Lower accuracy (0.5%) → larger discrepancies, increased risk.
[1] Electricity price statistics: link (accessed October, 3, 2024).
This document presents a simplified technical overview of CTs, covering fundamental principles of operation, essential equations, and IEC standards and regulatory framework.
It also details the performance requirements for CT magnetic cores and potential selection materials, highlighting the advantages of nanocrystalline alloys in meeting modern demands for precision, dynamic range, and DC bias tolerance.