KYORITSU 6016 - Manual (Page 47)

44
Note :
●
Make sure to stick the auxiliary earth spikes in the moist part of the soil. Give enough
water where the spikes have to be stuck into the dry, stony or sandy part of the earth
so that it may become moist.
● In case of concrete, lay the auxiliary earth spike down and water it, or put a wet dust
cloth etc. on the spike when making measurement.
4.Press the test button, the display will show the earth resistance of the circuit.
● If measurement is made with the probes twisted or in touch with each other, the
reading of the instrument may be affected by induction. When connecting the probes,
make sure that they are separated.
● If earth resistance of auxiliary earth spikes is too large, it may result in inaccurate
measurement. Make sure to stick the auxiliary earth spike and H(C) into the moist
part of the earth carefully, and ensure sufficient connections between the respective
connections. High auxiliary earth resistance may exist if “R
S
Hi” or “R
H
Hi” is
displayed during measurements.
● Great errors may included in the measured earth resistance when earth voltage of
10V or more exist. In this case, power off the devices which is using earth resistance
under test to reduce the earth voltages.
H(C)
S(P)
Ω
E
Fig.42