9.17.2 Test at a temperature of 45

9.17.2 Test at a temperature of 45 °CThe IC-CPD is placed as for normal use on a dull black painted plywood support, about 20 mm thick.IC-CPDs are tested as supplied by the manufacturer.The assembly is placed in a heating cabinet.Non-rewirable IC-CPDs are tested as delivered.The IC-CPD is loaded with a current equal to the rated current at any convenient voltage and is subjected, at a temperature of (45 ± 2) °C, to 28 cycles, each cycle comprising 21 h with current passing and thereafter 3 h without current. The current is interrupted by an auxiliary switch, the IC-CPD not being operated.In case in Table 5 footnote h) applies, the test shall be performed at the maximum temperature of the plug.IC-CPDs are supplied at the rated voltage or, in the case of more rated voltages, at any one rated voltage. At the end of the last period of 21 h with current passing, the temperature rise of the terminals is determined by means of fine wire thermocouples. This temperature rise shall not exceed 50 K.After this test the IC-CPD is allowed to cool down in the cabinet to approximately room temperature without current passing.Under the conditions of tests specified in 9.7.3.4, the IC-CPD shall trip with a test current of 1,25 I∆n. One test only is made on one pole taken at random without measurement of break-time.