Description: Power requirement of the pump at the flow rate at the point of best efficiency; Name: pump power input (optimum)
Description: pump power input at the rate of flow corresponding to the best efficiency; Name: optimum pump power input
Description: Allocation of explosion-protected electrical operating media according to their maximum surface temperature for use in explosion-capable atmosphere in accordance with (IEC 50(426):1990; Name: Explosion protection temperature class of the electric motor