Commissioning; Earth Resistance Measurement (Two-Wire Method); Earth Resistance Measurement (Three-Wire Method) - BEHA UNITEST TELARIS Bedienungsanleitung

Earth Resistance Measurement (two-wire method)

6.0 Commissioning

Prior to commissioning, carefully read the in-
struction manual.
6.1 Earth Resistance Measurement (two-wire
method)
Resistance measurement by using the two-wire
method is used to measure, e.g. the resistance be-
tween an available, known and good ground con-
nection and a newly installed ground.
Measurements in dangerous proximity to elec-
trical systems should only be carried out in con-
junction with clear instructions from a responsible
electrical specialist and must not be carried out
alone.
To avoid error measurement, no metalic piping
or cables should be installed in parallel to the mea-
surement layout.
4 Insert earth rod/probe into ground
4 Connect probe and auxiliary ground to sockets
(H) + (E), as described in figure 6.1 by using
a clamp to the earth rod or to a known, good
ground.
24
4 Turn the rotary switch to the "2 pole" position.
4 Set contact voltage (11).
4 Automatic (16) or manual (12) frequency selec-
tion.
4 Press key "Start" (14).
Also refer to display indications in chapter 7.0
After the measurement, selection can be made
between display in R or Im by using the measure-
ment variable indication key (8), depending on the
measurement result.
Possibility to measure conventional resistance
by using the grounding resistance measurement
range. For this purpose, connect lines E and H to the
EUT. Test current is fed via lines E and H, measure-
ment voltage is measured via E and H.
6.1