Fluke Fluke 4325155 User Manual
Product codes
4325155
Earth/Ground Tester
Specifications
31
Measurement principle: Current and voltage measurement
Measurement voltage:
Um = 48 V ac
Short-circuit current:
> 50 mA ac
Meas. frequency:
128 Hz
Probe resistance (R
S
):
max 100 k
Ω
Auxiliary earth electrode resistance (R
H
):
max 100 k
Ω
Additional error from R
H
and R
S
: R
H
[k
Ω
] R
S
[k
Ω
]/Ra[
Ω
] 0.2 %
RA 3-Pole and 4-Pole selective ground resistance measurement with current
clamp (RA )
clamp (RA )
Resolution Measurement
range Accuracy
Operating
error
0.001 to 10
Ω
0.020
Ω
to 19.99 k
Ω
±
(7% rdg + 3 d)
±
(10% rdg + 5 d)
Measurement principle: Current/voltage measurement (with external current clamp)
Measurement voltage:
Um = 48 V ac
Short-circuit current:
> 50 mA ac
Measurement frequency:
128 Hz
Probe resistance (Rs):
max 100 k
Ω
Auxiliary earth electrode resistance (Rh):
max 100 k
Ω
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
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.