Description: ratio of the number of failures of a given category to a given unit of measure; Name: failure ratio
Description: Number of failures within a population divided by the number of life units used by that population; Name: failure rate
Description: permanent operation, short-term operation or periodic operation characterized by one of more loads and which remains unchanged during a certain period, or, in the case of non-periodic operation, where the load and speed generally change within the permissible operating range; Name: Operation type time sequence of the drive