LEM SATURN GEO plus Manuel D'utilisation page 16

Technical Data
R 3-pole ground resistance measurement
A
Switch position Resolution measuring range
Ra 3-pole 0,001 ... 10 Ω 0,001 Ω ... 19,99 kΩ
For 2-pole measurements connect terminals H and S with the supplied connector cable!
Measuring principle: Current and voltage measurement
Measuring voltage:
Short-circuit current:
Meas. frequency:
Probe resistance (Rs):
Auxiliary earth electrode resistance (Rh):
Additional error from Rh and Rs:
Monitoring of Rs and Rh with error indicator.
Automatic range selection.
R 4-pole ground resistance measurement
A
Switch position Resolution measuring range
Ra 4-pole 0,001 ... 10 Ω 0,001 Ω ... 19,99 kΩ
Measuring principle: Current/voltage measurement
Measuring voltage:
Short-circuit current:
Measuring frequency:
Probe resistance (Rs+ Res):
Auxiliary earth electrode resistance (Rh):
Additional error from Rh and Rs:
Monitoring of Rs, and Rh with error indicator.
Automatic range selection.
R 3-pole selective ground resistance measurement with current clamp (R
A
Switch Measuring range
Resolution
position
Ra 3-pole 0.001 ... 10 Ω 0.001 Ω .. 19.99 kΩ
Measuring principle: Current/voltage measurement (with external current clamp)
Measuring voltage:
Short-circuit current:
Measuring frequency:
Probe resistance (Rs):
Auxiliary earth electrode resistance (Rh):
Monitoring of Rs, and Rh with error indicator.
Measurement is not executed if the current through the current clamp is too low.
.
Automatic range selection
(IEC 1557-5)
Intrinsic error Operating error
±(2% rdg + 3 d) ±(5% rdg + 3 d)
Um = 48 Vac.
> 50 mA
128 Hz (125 Hz on request)
max 100 kΩ
max. 100 kΩ
Rh[kΩ] ž Rs[kΩ] / Ra[Ω] ž 0,2 %
(IEC 1557-5)
Intrinsic error Operating error
±(2% rdg + 3 d) ±(5% rdg + 3 d)
Um = 48 Vac.
> 50 mA
128 Hz (125 Hz on request)
max. 100 kΩ
max. 100 kΩ
Rh[kΩ] ž Rs[kΩ] / Ra[Ω] ž 0,2 %
)
A
Intrinsic error Operating error
±(7% rdg + 3 d) ± (10% rdg + 5 d)
Um = 48 VAC.
> 50 mA
128 Hz (125 Hz on request)
max. 100 kΩ
max. 100 kΩ
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