How to choose a voltage stabilizer for medical equipment

2024-11-11 16:18:36

With the advancement of medical science and technology, various precision instruments and equipment have been widely used in the medical field. The introduction of these devices plays an important role in the diagnosis and treatment of patients. Since medical equipment has high requirements for the quality and voltage of the power supply, if the power supply quality is poor, it is easy for the medical equipment to freeze during operation, component damage, and data loss caused by program execution errors, which will cause great medical safety hazards and bring considerable economic losses to the hospital. At present, hospitals generally use AC voltage stabilizers and UPS uninterruptible power supplies to ensure the normal and safe operation of medical equipment.

1. Selection of voltage stabilized power supply

At present, there are many types of voltage stabilizers on the market, such as electronic voltage stabilizers, AC compensation voltage stabilizers, CNC contactless voltage stabilizers, etc. When performing voltage stabilized power supply, the following aspects should be paid attention to:

1. The response time of the power supply The response time of the voltage stabilizer will be directly reflected on the medical equipment. The general mechanical voltage stabilizer uses the rotation of the motor to drive the carbon brush to slide back and forth on the autotransformer to achieve the purpose of voltage stabilization. Its production cost is relatively low, economical and practical, and can meet the voltage stabilization requirements of most equipment.

2. The voltage stabilization accuracy needs to be considered during the selection process. The voltage stabilization accuracy of the most traditional mechanical voltage stabilizer is ±2%. In recent years, a high-precision silent voltage stabilizer-contactless voltage stabilizer has been developed with high-tech core technology. The accuracy can be as high as 0.5±1%. Under normal circumstances, PET, DR, CT, MR nuclear magnetic resonance imaging, etc. have very high requirements for voltage stabilization accuracy. In this case, it is recommended to select a CNC contactless voltage stabilizer. It can quickly solve the voltage instability.

2. Measures to ensure the stable operation of medical equipment

At present, there are common problems such as unstable power supply and electromagnetic interference in the use of medical equipment, which poses certain safety hazards to the normal use of medical equipment.

1. Branch power supply For the case of unstable voltage, a multi-branch isolation transformer can be used to supply power to the equipment with very high power requirements separately. This can effectively avoid mutual interference between the equipment when using electricity. At the same time, some important equipment can be equipped with a dedicated AC voltage stabilizer or UPS uninterruptible power supply to ensure the safe operation of medical equipment.

2. Equipped with power quality purification device By using AC voltage stabilizer and high-frequency power filter, the stable operation of the equipment can be guaranteed, and the interference of electromagnetic waves on the power line transmission process can be reduced. By adding AC voltage stabilizer, the occurrence of instantaneous overvoltage and instantaneous drop caused by surge can be effectively suppressed. In addition, the interference of the outside world to the power supply can be reduced by connecting the ground wire.

Medical equipment is a kind of equipment with very high requirements for power quality. The decline of power quality will make the use of medical equipment unstable, which will cause the suspension of medical equipment at the least, and damage the equipment at the worst, causing medical accidents. Therefore, the configuration of voltage stabilized power supply and UPS uninterruptible power supply plays an important role in ensuring the safe and normal use of medical equipment, which is of great significance to further improve the quality of medical care.