The following table determines the mean time between failures in hours for each of Modicon X80 racks power supplies.
Mentioned values are in Hours, and calculated at different temperatures and operation conditions contineously or intermittent.
The total hours can be divided by 8760 (number of hours in a year) to get the total number of years between failures or it can be divided by 720 (hours in a month) to have the total months between failures.

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