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SEW1820 ER Earth Resistance Testers

 Capable of measuring earth voltage (Vac).
 2mA measuring current permits eath resistance to test without tripping earth leakage current breakers in the circuit.
 Test leads are supplied as standard accessories for simplified two-wire measuring system.
 Data hold function.
 Battery operated.
 IEC/EN61010-1, iec 61557-5 CAT II 300V.
 Calibration performed with supplied test leads.



Measuring Ranges

Earth Resistance : 0-20 Ohm/0-200 Ohm/0-2000 Ohm

Earth Voltage : 0-200V AC (40-500Hz)


Earth Resistance : +/- (2%rdg+2dgt)

Earth Voltage : +/- (1%rdg+2dgt)

Earth Resistance Resolution

0-20 Ohm (0.01 Ohm)

0-200 Ohm (0.1 Ohm)

0-2000 Ohm (1 Ohm)

Measuring System

Earth Resistance by constant current inverter 820 Hz approx. 2mA

Low Battery Indication

symbol appears on the diaplay

Data Hold Indication

symbol appears on the display

Over Range Indication

"1" (MSD)

Open Circuit Indication

LED will be unlit

Display LCD

LCD 3-1/2 digit (2000 counts)

Power Source

1.5V (R6P) x 8 Type AA


170(L) x 165(W) x 92(D) mm


Approx. 1050g (battery included)


Test leads (AL-36 : red-15m, yellow-10m, green-5m)

Auxiliary earth spikes

Simplified measurement probe, shoulder belt

Instruction manual, batteries


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