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Earth/Ground Tester
Specifications
47
Measuring sequence: approximately 2 measurements/s
Measuring time: typical 4 seconds includes reversal of polarity (2-pole or
4-pole)
Maximum interference voltage: ≤3 V ac or dc, with higher voltages measurement will not
be started
Maximum inductivity: 2 Henry
Maximum overload: U
rms
= 250 V
Compensation of Lead Resistance (R
K
)
Compensation of lead resistance (R
K
) can be switched on in functions R
E
3pole, R
E
3pole ,
R~, and R 2pole
Formation of measured value: R
display
= R
measured
- R
compensated
*
* Value of setpoint entry R
K
= 0.000 Ω, variable from 0.000…29.99 Ω by means
of measuring adjustment.
Stakeless Ground Loop Measurement ()
Resolution Measurement range Accuracy Operating Error
0.001 to 0.1 Ω 0.020 Ω to 199.9 Ω ±(7% rdg + 3 d) ±(10% rdg + 5 d)
Measuring principle: Stakeless measurement of resistance in closed loops using two current
clamps
Measurement voltage: Um = 48 V ac (primary)
Measurement frequency: 128 Hz
Noise current (I
ext
): max I
ext
= 10 A (ac) (Ra < 20 Ω)
max I
ext
= 2 A (ac) (Ra > 20 Ω)
The information about stakeless ground loop measurements is only valid when used in
conjunction with the recommended current clamps at the minimum distance specified.
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