大型医疗设备，如CT，加速器，X线影像设备等，多采用三相电源供电，三相电源从公共电网通过各大型医疗设备配电空气开关（或闸刀），经过设备专用电源稳压器后向各设备提供较稳定的电源，在这两个环节上的接触不良，可造成设备的电源质量大大下降，轻者影响设备工作稳定性，严 Large-scale medical equipment, such as CT, accelerators, X-ray imaging equipment, etc., mostly uses three-phase power supply, three-phase power from the public power grid through the major medical equipment distribution air switch (or knife), through the device-specific power regulator After providing relatively stable power to all equipment, poor contact between these two links can cause the power quality of the equipment to be greatly reduced, and the lighter equipment will affect the stability of the equipment.