IEC TR 63250:2021涉及用于评估家用和类似电器性能特征的测试方法的重复性和再现性的确定。它还为执行循环测试（RRT）提供了指导。 它还规定了家用和类似电器测量的不确定度报告。 它描述了当在另一个实验室应用相同的测量方法测量相同的设备时，估计测量结果的不确定度和预测测量值范围的方法。 它不包括测量方法的开发。它也不涉及: -器具的生产可变性； -测量方法在多大程度上反映了家庭中电器的正常使用情况。

IEC TR 63250:2021 deals with the determination of repeatability and reproducibility of test methods used for assessing the performance characteristics of household and similar electrical appliances. It also provides guidance for carrying out round robin tests (RRT).
It also specifies the uncertainty reporting of measurements of household and similar electrical appliances.
It describes methods to estimate the uncertainty of a measured result and to predict the range of measured values when the same appliance is measured in another laboratory applying the same measurement method.
It does not cover the development of measurement methods. It also does not deal with:
– the production variability of the appliance;
– how closely the measurement method reflects the normal use of appliances in households.