Description: Period of time from the commissioning of a plant, part of a plant, a component or a line system; Name: service life
Description: passed time period after comissioning of a system, sub-system, component or piping; Name: Operating time 
Description: information about the manner in which clamps respectively the carrier of the supply voltage and / or signal voltage are put into effect data-, line- and / or fixationwise; Name: type of connection system