2.4 Measurement Procedure
As illustrated below, the instrument is designed to measure
grounding resistance at multiple grounding locations. (*For appli-
cations involving the measurement of grounding resistance at a
single grounding site, use Hioki’s 3151 EARTH HiTESTER.)
If the grounding resistance of the measurement target is repre-
sented by R
x
and the grounding resistance values of other
grounded locations are represented by R
1
, R
2
, …, R
n
, the resis-
tance value measured by the product is as follows:
If
n
is sufficiently large and each R
i
value is sufficiently small,
and the second term can be ignored, allowing the value of
R
x
to be measured.
Resistance Measurement
Measuring Principle
R
m
R
x
1
1
R
i
-----
i 1=
n
∑
------------------+=
R
x
1
1
R
i
-----
i 1=
n
∑
------------------»
www.GlobalTestSupply.com
Find Quality Products Online at: sales@GlobalTestSupply.com
To Next Page
Loading...
Need help?
General
