Improving the Power System safety in Hospitals by means of periodical SFRA tests on Medical Isolation Transformers

The paper has the main aim of demonstrating a possible use ofthe well consolidated monitoring SFRA (Sweep Frequency Response Analysis)technique for preventive maintenance procedure applied to isolation medical transformers operating in hospitals’ group 2 medical locations. In particular, a novel testing platform has been implemented that can perform the monitoring test on IT-M during normal periodical verification provided by specific standard.In the paper, some results of the practical application of such a platform to several transformers in currently in operation in various Italian hospitals have been reported.