家用电器待机功耗测试研究

针对家用电器待机功耗精确测量问题,对电器样品的电路特性与功率计电流量程选取的关系、功率计接线方式选取及其功率修正方法等方面进行了研究,提出了功率计电流量程和接线方式的选取原则。并按照IEC62301-2011家用电器待机功耗测量方法要求,通过测试实例对待机功耗测量允许误差和测量误差进行了计算和分析。研究结论表明,待机功耗的测量精度与被测样品的电路特性相关,如波峰因数、功率因数等,且不能用仪表精度加以直接表述,因此其符合性应通过计算测量结果的误差进行判定。该结论有助于实现待机功耗测试的标准化和规范化。

Standby power measurement research of household electrical appliances

Aiming at measurement of house electrical appliance standby power,study on relationship between EUT circuit characteristics and selection of power meter,power meter wiring mode and test result correction method was carried.Principle of selection for current scale and wiring mode of power meter was presented.Allowable error and measurement error requirement and computational method were given by some test cases according test method of IEC62301-2011 house electrical appliances-measurement of standby power.The results indicate that accuracy of standby power test is closely related to EUT circuit characteristics and can not be expressed by the precision of the instruments directly,so its compliance should be determined by calculating error of the result.The research conclusion is useful for normalization and standardization of low standby power measurement.