12.2 Replacement:For machines with one or more rated voltages, the machine is operated at each rated voltage under the load conditions specified in 12.2.1. Without any further alteration of the applied torque, the voltage is then adjusted to 0,94 times the rated voltage and 1,06 times the rated voltage.The temperatures are measured at the most unfavourable of the two voltage settings. The temperatures that are measured by means of thermocouples are taken while the machine is operating.For machines with a rated voltage range, the machine is operated– at the lower limit of the rated voltage range, under the load conditions specified in 12.2.1, and without any further alteration of the applied torque, the voltage is then adjusted to 0,94 times the lower limit of the rated voltage range;and– at the upper limit of the rated voltage range, under the load conditions specified in 12.2.1, and without any further alteration of the applied torque, the voltage is then adjusted to 1,06 times the upper limit of the rated voltage range.The temperatures are measured at the most unfavourable of the two voltage settings. The temperatures that are measured by means of thermocouples are taken while the machine is operating.