KS C IEC 60730-2-15-2020 Automatic electrical controls —Part 2-15: Particular requirements for automatic electrical air flow,water flow and water level sensing controls
2020KS C IEC 60730-2-15:2020 Automatic electrical controls —Part 2-15: Particular requirements for automatic electrical air flow,water flow and water level sensing controls
2003KS C IEC 60730-2-15:2003 Automatic electrical controls for household and similar use-Part 2-15:Particular requirements for automatic electrical water level sensing controls of the float or electrode-sensor type used in boiler applications