... electric power, telecommunications, meteorology, oil field, construction, lightning protection, industrial electrical equipment and other earth ground resistance measurement. ... Voltage Range--0V~600V AC Resolution--1V Accuracy--±1%rdg±3dgt11.Tester Dimension LWH--215mm×190mm×95mm12. ... frequency electromagnetic field≤1V/m 18.Protection Type IEC61010-1,IEC1010-2-31,IEC61557-1,5,IEC60529(IP54),CAT Ⅲ 300V ...