Description: rated flow rate divided by the inlet area of the plant ; Name: Average nominal velocity in the inlet area of the plant
Description: Rated flow at the inlet area of the installation divided by the inlet area of the installation; Name: Mean rated velocity at inlet area of the installation
Description: norm describing the material. The material number is taken from this norm. Type and number of the norm with issue year and issue month must be given; Name: Reference norm material of the drive housing