8020ER 3 WIRE DIGITAL EARTH RESISTANCE TESTER

● Capable of measuring earth resistance and earth voltage.
● 2mA measuring current permits the testing of
earth resistance without tripping earth
leakage current breakers in the circuit under test.
● Frequency : 820Hz.
● 0Ω adjustment.
● Battery operated.
● Data hold function.
● Low battery indication.
● Calibration performed with supplied test leads.
● Simplified measurement probe is also provided
for two-wire measuring method.

Measuring ranges	Earth resistance 0-20Ω / 0-200Ω / 0-2000Ω Earth voltage 0-200 Vac (40-500Hz)
Accuracy	Earth resistance  ±(1.5%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
Testing frequency	820 Hz
Measuring system	Earth resistance by constant current inverter 820Hz approx 2mA.
Display	3½ digit (2000 counts)
0Ω adjustment	V
Open circuit indication	LED will be unlit
Low battery indication	” ” symbol appears on the display
Data hold indication	” ” symbol appears on the display
Over range Indication	“1”(MSD)
Dimensions	221(L) × 110(W) × 57(D)mm
Weight (battery included)	Approx. 600g
Power source	1.5V (AA) x 6
Safety standards	IEC/EN 61010-1 CAT IV 200V EN 61557-1  EN 61557-5 EN 61326-1