38
Precise Measurement for Earth Resistance
(Precise Measurement Method, Three-pole Method)
2
1
Use the measurement cable (black)
to connect between earthing
electrode and E terminal.
2
Carry two winders along to the
measuring location while pulling
out the measurement cables.
3
At the location where the
measurement cable (yellow)
has been fully pulled out, insert
the auxiliary earthing rod into
the ground and connect the
measurement cable (yellow).
4
Carry the winder (measurement
cable: red) along the straight line
to a further distance between the
earthing electrode E and auxiliary
earthing electrode S while pulling
out the measurement cable.
5
At the location where the
measurement cable (red) has been
fully pulled out, insert the auxiliary
earthing rod into the ground and
connect the measurement cable (red).
•
Insert the auxiliary earthing rods into a moist layer in the
ground. Since this device can accept a large resistance of
auxiliary earthing electrode, the auxiliary earthing rods do not
need to be inserted unnecessarily deep into the ground.
•
For accurate measurement, the distance between E-S-H needs
to be approx. 5 m. The measurement cables (yellow) and (red)
should be positioned approx. 10 cm away from each other.
Make sure the cables do not tangle or overlap together.
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