Description: the optimum volumetric flow at the point of best efficiency; Name: Optimal flow volume
Description: Rate of flow at the point of best efficiency; Name: Optimum rate of flow
Description: norm/stipulation describing the explosion protection. The explosion protection type, the device category, the temperature class as well as the device / explosion group are taken from this norm. The type and number of the norm/stipulation with issue year and issue month must be given; Name: Reference norm of the explosion protection of the electric motor