Investigations of the Quality of Hospital Electric Power Supply and the Tolerance of Medical Electric Devices to Voltage Dips |
| |
| Authors: | Eisuke Hanada Shuuya Itoga Kyoko Takano Takato Kudou |
| |
| Affiliation: | (1) Division of Medical Informatics, Shimane University Hospital, Enya-cho 89-1, Izumo 693-8501, Japan;(2) Medical Equipment Center, Shimane University Hospital, Enya-cho 89-1, Izumo 693-8501, Japan;(3) Department of Medical Education, Environmental Health and Socio-Medical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan;(4) Department of Electrical and Electronic Engineering, Faculty of Engineering, Oita University, Oita 870-1192, Japan |
| |
| Abstract: | Medical devices driven by electric power have come to be commonly used in hospitals, and rapid changes of voltage or current can easily cause them to fail. A stable and high quality power supply is indispensable in order to maintain safety in the modern clinical setting. Therefore, we investigated the quality of the power supply in a hospital and determined the tolerance of 13 pieces of medical equipment to voltage dips. The results showed little distortion of the voltage wave. However, we found an approximately 7% momentary voltage dip caused by lightening and other problems, such as 2 to 5% periodic drops in voltage and voltage wave distortions caused by incorrect grounding. In a tolerance test, the settings of some medical devices were changed at the time of automatic reboot after a disturbance. For another device, trend information was initialized. |
| |
| Keywords: | Medical electric device Electric power supply Voltage dip |
| 本文献已被 PubMed SpringerLink 等数据库收录！ |
|
