MRI, CT Scan Acceptable Frequency Tolerance

Thank you for your answer.

while i'm asking in this forum, i do contacing with the CT, MRI Scan manufacturer also but have not get the answer yet.

The MRI & CT scanners both will not care about freq tolerance. They both use internal power systems that are designed to be impervious to anything but the most egregious power fluctuations. However, that said, three are a multitude of other loads in any hospital that absolutely MUST be kept within tight tolerances. If any surgical our life signs monitoring equipment will be on this generator then it will need to be 1% tolerance. One question, why on earth would you need or want to run an MRI or CT during a power outage?! These are not considered critical functions and are not required by any standard that I know of to be supplied power from a gen set. You would need a separate gen set just to run them and it would be about the largest standard order set you could buy!

Re:#2

Why are MRI and CT mentioned together at all?

CT is a very fancy X ray machine with a set of computers. Not particularly sensitive to anything.

The MRI on the other hand, is so sensitive to electromagnetic interference, that it is normally housed in a separate, shielded building to reduce interference from other equipment. It has excessive power filtering requirement for sure. But none against a PURE SINUSOIDAL UPS.

I think the frequency requirements are make-believe.

The reason why MRI and CT are mentioned together is that they both belong to the radiology department, and, as in my hospital, can be in adjacent suites.

I agree, though, that they are not critically dependent on the frequency of the mains supply.