NF C55-132-4*NF EN IEC 63132-4:2020 Guidance for installation procedures and tolerances of hydroelectric machines - Part 4 : vertical Kaplan or propeller turbines
2020NF C55-132-4*NF EN IEC 63132-4:2020 Guidance for installation procedures and tolerances of hydroelectric machines - Part 4 : vertical Kaplan or propeller turbines