DOBLE M5500 Sweep Frequency Response Analyzer

Doble M5500 Sweep Frequency Response Analyzer (SFRA)

The Doble M5500 is a state-of-the-art Sweep Frequency Response Analyzer that delivers broadband diagnostics for transformer health assessment. With advanced measurement fidelity and high-speed sweep capabilities, it ensures accurate detection of even the smallest structural changes inside power transformers—making it ideal for both field testing and manufacturing quality control.