概述D33-W型三相瓦特表是電動(dòng)系雙元件攜帶式指示電表,用來測(cè)量三相交流45-65HZ平衡或不平衡負(fù)載系統(tǒng)的有功功率用.GeneralModelD33-Wthree-phasewattmetersareportableelectrodynamicindicatinginstru-mentswithtwo-elementconstruction,offeringitformeasuringactivepoweronACthree-phasecircuitswiththefrequencyat45-65HZ.