Description: Length of time that maintenance is performed on an object, including technical, logistical, and internal administrative delays; Name: time for maintenance 
Description: Time interval when maintenance is carried out on an item including technical, logistic and internal administrative delays; Name: Maintenance time
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