According to statistics, medical equipment is subject to power interference more than 80 times a month. These interferences mainly include voltage changes, power outages (including millisecond short-term power outages), phase loss, poor phase balance, etc. Among these interferences, a large part of them are easily overlooked due to their imperceptibility and indistinguishability with the naked eye, but they usually affect the normal and safe use of the equipment. Installing UPS uninterruptible power supply in medical equipment can effectively prevent the impact of instantaneous current surges, sudden power outages, data loss, or sudden shutdown on the equipment. When selecting UPS uninterruptible power supply, the following points should be noted:
1. The power of UPS is usually expressed in VA. When selecting a UPS power supply, the VA value of the medical equipment is first calculated and a certain margin is left to determine the power of the UPS power supply. The types of UPS output waveforms are usually divided into backup square wave, online interactive sine wave, and online type. The characteristics of a sine wave are no harmonics and zero second conversion. Medical equipment belongs to high-precision instruments and has very high quality requirements for power supply. In practical use, online UPS power supply is usually selected to avoid power interference.
3. Selection of battery capacity: The capacity of backup batteries can be divided into two types: standard machines and extension machines. Standard machines have built-in batteries, which can generally extend the device's usage time by 10-15 minutes after power failure, while extension machines are usually equipped with battery cabinets, which can usually extend the device for a longer period of time. In practical applications, it is usually chosen according to the needs.

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