Frequency Response Analysis (FRA)

The HVEX Sweep Frequency Response Analyzer (SFRA) is the definitive tool for diagnosing the mechanical and electrical integrity of power transformers. It identifies winding deformations, core issues, and other internal structural faults with the highest precision, providing a comprehensive assessment of the asset's actual condition. Through a frequency sweep, the equipment creates a unique spectral 'signature' of the transformer. Comparative analysis of this signature against reference measurements or between phases allows for a definitive diagnosis of anomalies. The entire test strictly follows international standards IEC 60076-18 and IEEE C57.149, ensuring total reliability and repeatability of the results. Designed for field environments, the system is compact, mobile, and robust. The 50 Vpp output guarantees a high-quality signal and excellent immunity to electrical noise, even within energized substations. The dedicated HFRA software centralizes the entire operation, enabling detailed graphical analysis, curve overlay for immediate comparison, report generation, and data export in .csv format for traceability. Indispensable for commissioning, maintenance, and engineering teams, the HVEX SFRA provides the confidence and data needed for critical asset management. It is the essential technology to optimize predictive maintenance, perform root cause analysis, and prevent unplanned outages.