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Amendment by International Organization for Standardization, 08/01/1980
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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)."