Application of SFRA for diagnostics on medical isolation transformers

Bucci, G.; Ciancetta, Fabrizio; Fioravanti, Andrea; Fiorucci, Edoardo; Prudenzi, A.

doi:10.1016/j.ijepes.2019.105602

Cited by 11 publications

(8 citation statements)

References 24 publications

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“…A substantial difference is in the leakage currents, which in the transformer for medical use must be lower. The IT-M systems are always systems with isolated star point and the M indicates the specific application for the medical sector [10].…”

Section: A Isolation Transformers For Medical Usementioning

confidence: 99%

Fast testing platform for the isolation transformer

Bucci¹,

Ciancetta²,

Fioravanti³

et al. 2021

REPQJ

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This work shows a program created in a Labview environment to verify the correct functioning and regulatory compliance of isolation transformers and isolation transformers for medical use. The transformer tests will be divided into acceptance tests and type tests. For each type of test, the program will be able to provide information for correct testing and to speed up the test path.The guided test procedure will accompany the author up to the automatic printing of the test reports. Finally, considerations will be made on which tests to perform on already installed transformers that require recertification.

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Section: A Isolation Transformers For Medical Usementioning

confidence: 99%

Fast testing platform for the isolation transformer

Bucci¹,

Ciancetta²,

Fioravanti³

et al. 2021

REPQJ

Self Cite

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“…Experience has shown that the response spectrum can be divided into different sub-bands, with undefined boundaries and even overlapping areas, more sensitive to different types of faults [4].…”

Section: Fig 2 Impedance Curves Of Electrical Componentsmentioning

confidence: 99%

“…The test is capable of identifying either core or windings movement, winding short circuit, junctions loosening and any other internal fault [3]. Therefore, the SFRA technique could help hospital maintenance personnel identify tempestively even slightly damaged isolation transformers, allowing to replace the faulted IT-M before severe failure and subsequent power outage occur [4].…”

Section: Introductionmentioning

confidence: 99%

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

Bucci¹,

Ciancetta²,

Fioravanti³

et al. 2020

REPQJ

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The paper has the main aim of demonstrating a possible use of the 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.

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“…The research presented in this paper is the initial phase of the development of a portable diagnostic system for the verification of electrical systems that use AFDDs for protection against electric arcs. This tool will make buildings safer [17,18] by checking the effective operation and intervention times of each AFDD device.…”

Section: Distribution System Typical Value Of Fault Currentsmentioning

confidence: 99%

Testing System for the On-Site Checking of Magneto-Thermal Switches with Arc Fault Detection

et al. 2020

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Arcing is a harmful condition that can lead to electrical fires. The U.S. National Electrical Code requires the installation of electric arc breakers in all residential areas. However, such devices can fail, and therefore, may not work when needed. At present, there are no tests to confirm the correct operation of this type of device. This study aimed to propose an experimental test method to verify the proper functioning of magneto-thermal switches with an electric arc protection function for the occurrence of arc faults. The results show that the proposed method adequately detected the correct operations and tripping time by using different surge suppressors. The proposed system lays the foundations for a portable test system for the periodic checking of electrical systems in which arc fault detection devices (AFDDs) are installed.

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Application of SFRA for diagnostics on medical isolation transformers

Cited by 11 publications

References 24 publications

Fast testing platform for the isolation transformer

Fast testing platform for the isolation transformer

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

Testing System for the On-Site Checking of Magneto-Thermal Switches with Arc Fault Detection

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