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ST-1520

FEATURES ● Capable of measuring earth resistance and earth voltage. ● 2mA measuring current permits earth resistance to test without    tripping earth leakage current breakers in the circuit. ● Auto power off function. ● The timer operates automatically for about three to five minutes    when the "PUSH BUTTON SWITCH" and "TIMER ON BUTTON"    are pressed together. This will keep test "ON" for the duration of the    timer. ● Timer for test function (count 3-5 minutes). ● Battery operated. ● Data hold function. ● Small and light weight. ● Calibration performed with supplied test leads.   SPECIFICATIONS Measuring ranges   Earth resistance     0-20Ω / 0-200Ω / 0-2000Ω     Earth voltage     0-200 Vac(40-500Hz) Accuracy : Earth resistance     ±(2%rdg+2dgt) or ±0.1Ω, which is     greater     Earth voltage     ±(1%rdg+2dgt) Earth resistance     resolution : 0-20Ω : 0.01Ω     0-200Ω : 0.1Ω     0-2000Ω : 1Ω Measuring     system : Earth Resistance by constant current     inverter 820Hz approx. 2mA. Display : 3½ digit(2000 counts) Open circuit     indication : LED will be unlit Low battery     indication : “ B “symbol appears on the is play Data hold     indication : “ DH “symbol Over range     indication : “1”(MSD) Dimensions : 163(L) × 100(W) × 50(D)mm Weight     (battery included) : Approx. 480g Power source : 1.5V(AA) × 6 Safety standard : EN 61010-1 CAT III 200V.     EN 55022