Datasheet

3 Fluke Corporation 1623-2 and 1625-2 GEO Earth Ground Testers
Measuring principle: Current and voltage measurement
Measuring voltage Vm = 48 V ac
Short-circuit current > 50 mA
Measure frequency 128 Hz
Probe resistance (R
S
) Max 100 kΩ
Auxiliary earth electrode resistance (R
H
) Max. 100 kΩ
Additional error from R
H
and R
S
R
H
[kΩ]
•••
R
S
[kΩ]/R
A
[Ω]
•••
0.2 %
Monitoring of R
S
and R
H
with error indicator
Automatic range selection
Measurement is not performed if the current through the current clamp is too low
R
A
4-pole ground resistance measurement (IEC 1557-5)
Switch position Resolution Measuring range Accuracy Operating error
R
A
4-pole 0.001 Ω to 10 Ω 0.020 Ω to 19.99 kΩ ± (2 % rdg + 3 d) ± (5 % rdg + 3 d)
Measuring principle: Current/voltage measurement
Measuring voltage Vm = 48 V ac
Short-circuit current > 50 mA
Measuring frequency 128 Hz
Probe resistance (R
S
+ R
ES
) Max. 100 kΩ
Auxiliary earth electrode resistance (R
H
) Max. 100 kΩ
Additional error from R
H
and R
S
R
H
[kΩ]
•••
R
S
[kΩ/R
A
[Ω]
•••
0.2 %
Monitoring of R
S
, and R
H
with error indicator
Automatic range selection
R
A
3-pole selective ground resistance measurement with current clamp (R
A
)
Switch position Resolution Measuring range Accuracy Operating error
R
A
3-pole
0.001 Ω to 10 Ω 0.020 Ω to 19.99 kΩ ± (7 % rdg + 3 d) ± (10 % rdg + 5 d)
Measuring principle: Current/voltage measurement (with external current clamp)
Measuring voltage Vm = 48 V ac
Short-circuit current > 50 mA
Measuring frequency 128 Hz
Probe resistance (R
S
) Max. 100 kΩ
Auxiliary earth electrode resistance (R
H
) Max. 100 kΩ
Monitoring of R
S
, and R
H
with error indicator
Automatic range selection
Measurement is not performed if the current through the current clamp is too low
R
A
4-pole selective ground resistance measurement with current clamp (R
A
)
Switch position Resolution Measuring range Accuracy Operating error
R
A
4-pole
0.001 Ω to 10 Ω 0.020 Ω to 19.99 kΩ ± (7 % rdg + 3 d) ± (10 % rdg + 5 d)