30
Clamp-on Ground Resistance Tester Model 6417
6.1.1.2 Measurement Results
Once the measurement has stabilized, the display
indicates:
-
The leakage current.
-
The impedance of the loop at the frequency of
2083Hz.
The impedance is measured only if the leakage
current is less than 10A. In the 10 to 40A range,
only the current is displayed; the NOISE symbol
blinks and the impedance is replaced by dashes.
Figure 6-1
To store the measurement into memory, press the
MEM
If the contact voltage exceeds 50V, the display indicates the current/impedance
measurements and the contact voltage alternately.
6.1.2 Advanced Mode
Selection of Advanced mode is performed in the
SET-UP
In this mode, three measurement screens are provided, impedance referred
to the chosen frequency and leakage current, contact voltage, display of R
(resistance) and L (inductance). The clamp measures the loop impedance
(
W
) at the frequency of 2083Hz. However, in addition to what is measured in
Standard mode, the impedance is recalculated at the frequency defined by the
configuration.
The frequency and alarm thresholds can be configured as desired (see
§
menus #4, #5 & #6).
6.1.2.1 Making a Measurement
■
Turn the rotary switch to the
Ω+A
position, and wait several seconds
while the instrument performs internal calibration.
■
Clamp around the conductor to be measured. If the clamp is incorrectly
closed, the
icon is displayed.
■
If necessary, use the
HOLD
button to freeze the measurement.
■
If necessary, use the
MEM
button to store the measurement.
www.
GlobalTestSupply
.com
Find Quality Products Online at:
