The laboratory can provide calibration for 50 or 60 hz single - phase power factor meters with measuring range from zero to unity , leading or lagging 功率因數(shù)表本所可為頻率為50或60hz而測(cè)量量程由零至一超前或滯后的單相功率因數(shù)表提供校正服務(wù)。
Direct acting indicating analogue electrical measuring instruments and their accessories part 5 : special requirements for phase meters , power factor meters and synchroscopes 直接動(dòng)作指示模擬電氣測(cè)量儀器及其附件.第5部分:相位表功率因數(shù)表和同步示波器的特殊要求
Direct acting indicating analogue electrical measuring instruments and their accessories . part 5 : special requirements for phase meters , power factor meters and synchroscopes 直接作用模擬指示電測(cè)量儀表及其附件第5部分:相位表功率因數(shù)表和同步指示器的特殊要求