13
Ground voltage shown on
the energizer display
Status
0 to 0,20 kV
OK
0,20 to 0,50 kV
Check earthing; add another earthing
rod as a precaution
> 0,5 kV
Carry out repairs or add earthing rod
If a dash is displayed on the energizer display next to measuring the quality of earthing
symbol it indicates either that the measuring electrode is not connected to the green output
or that the fence system wire is not short-circuited (if fence system impedance is higher than
500 Ohm).
It is also important what fence system impedance the energizer measures. If the energizer
shows impedance of 500 Ohm or lower, i.e. long or overgrown fence system then there is no
need to install anything else and the earthing check works automatically. Check the ground
voltage on the energizer according to the below table.
If the fence system impedance is higher than 500 Ohm, i.e. quality fence not subjected to
load, then it is required to short-circuit the fence system to enable the measurement and thus
determine the quality of earthing. To carry out short-circuiting, the overhead fence system
wire is earthed at a location of at least 50 m from the energizer. Use good quality earthing rod,
hammer it into the ground and connect it to the wire, subsequently check the ground voltage
on the energizer according to the following table.
