BENNING IT 115
Device description
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5.7 Earthing resistance
An adequate and reliably effective earth connection is an important prerequisite for the correct
functioning and safety of electrical installations.
In combination with the optional earthing kit (044113), it is possible to perform earthing
resistance measurements at main earthing systems, lightning arresters and local earth
connections. The measurement complies with the EN 61557-5 standard.
Earthing resistance measurement is performed using the three-wire measuring method by
means of two earth rods.
Key function as described in chapter
4.2 Function selector switch
Figure 5.32: Earthing resistance
Testing parameters
Limiting
value
Maximum resistance
[without limits (---), 1 Ω ÷ 5 kΩ]
How to perform earthing resistance measurements
Select the
R
E
function by means of the function selector switch. The display shows
EARTH
RE
.
Set the limiting value (optional).
Connect the test cables to the test object (see figure 5.33 and 5.34)
Press the "
TEST
" key to start the measurement.
Connection plan
Figure 5.33
:
Connection of the optional earthing kit (
044113)
–
Measurement of the main earthing system
