Description: temperature to which a particular piece of equipment is subjected during normal operation; Name: operating temperature 
Description: Temperature determined by the given application and fluid. ; Name: Working temperature
Description: voltage which, together with the rated operating current, determines the use of the device and to which the various tests and the use categories refer. With single pole devices the rated rated operating voltage is generally the voltage over the pole. With multi-pole devices it is generally given as chained voltage; Name: Operating voltage