Description: Ratio of the power requirement of the pump reduced by the mechanical power losses  to the power requirement of the pump under certain working conditions.; Name: mech eff
Description: proportion of the pump power input, p, available after satisfying the mechanical power losses, pj,ab, at given operating conditions; Name: mechanical efficiency
Description: Construction measures for electrical operating media for preventing ignition of the surrounding explosion-capable atmosphere; Name: Explosion protection Type of 'e' protection of the electric motor