ISO 1992-6:1974/Amd 1:1980

Sub-clause 4.2, add the following paragraph: "For cabinets intended to be switched-off at night, the period for measurement electrical energy consumption from the time of switching-on shall be 10 h." Clause 5, add the following sentence in c): "For cabinets intended to be switched-off at night, the total electrical energy consumption during the test shall be expressed in kilowatt hours per 10 h (see 4.2)."