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STANDARD ELECTRIC WORKS CO.,LTD.
MEASURE WITH PRECISION
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Earth Resistance Testers
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3 Wire (Digital) Earth Resistance Testers
2120 ER
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.
● The leads are supplied as standard accessories for simplified
two-wire measuring system.
● 0Ω adjustment.
● Battery operated.
● Data hold function.
● Battery test indication.
● 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 ±0.1
Ω, 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)
0Ω adjustment
:
√
Open circuit
indication
:
LED will be unlit
Low battery
indication
:
"
"symbol appears on the is play
Data hold
indication
:
"
"symbol appears on the display
Over range
Indication
:
“1”(MSD)
Dimensions
:
210(L) × 210(W) × 100(D)mm
Weight
(battery included)
:
Approx. 1395g
Power source
:
1.5V(AA) × 8
Safety standard
:
EN 61010-1 CAT III 200V.
IEC 61557-1 IEC 61557-5
EN 61326-1
Copyright © 2010 STANDARD ELECTRIC WORKS CO.,LTD. All Rights Reserved