MI 3102(H) BT
Eurotest
XE
Measurements
58
Notes:
High resistance of S and H probes could influence the measurement results. In this
case, “Rp” and “Rc” warnings are displayed. There is no PASS / FAIL indication in this
case.
High noise currents and voltages in earth could influence the measurement results. The
tester displays the
warning in this case.
Probes must be placed at sufficient distance from the measured object.
5.8.2 Contactless earthing resistance measurement (with two current
clamps)
The measurement enables simple testing of individual earthing rods in large earthing system. It
is especially suitable for use in urban areas because there is usually no possibility to place the
test probes.
Connection for contactless earthing resistance measurement
Figure 5.39: Contactless earthing resistance measurement
Figure 5.40: Example of contactless earthing resistance measurement result
Displayed results for contactless earth resistance measurement:
R
.............. earth resistance
Notes:
For two clamps earth resistance measurement clamps A 1018 and A 1019 should be
used. Clamps A 1391 are not supported.
The distance between clamps should be at least 30 cm.
High noise currents and voltages in earth could influence the measurement results. The
tester displays the “noise” warning in this case.
The measurement results are very accurate for resistances below 10 Ω. At higher values
(several 10 Ω) the test current drops to few mA. The measuring accuracy for small
currents and immunity against noise currents must be considered! The tester displays
the “low current” warning in this case.
