R=r1∥r2∥r3∥r4∥r5∥r6∥…∥rn (r1…rn are all independent
earthing points)
R—— The reading value on meter, the total earth resistance of the
earthing system.
r1…rn—— All are independent earthing points, each points have no
connection together under the ground.
rC—— The earth resistance rC of auxiliary current electrode C
(H).
rP—— The earth resistance rP of auxiliary voltage electrode P(S).
n—— Number of independent earthing point, more points, smaller
the R value.
After finishing wires connection, firstly rotate FUNCTION rotary
switch to “REARTH”, press “START” button to start testing. During
testing, display countdown and process bar indicator. Stable earth
resistance value is shown when finish testing.
Press “SET” button, the earth resistance rC of auxiliary current
electrode C
(H)
and earth resistance rP of auxiliary voltage electrode
P
(S)
will be displayed, and then automatically return display of
measured earth resistance R.
As shown below, the measured earth resistance is 2.05Ω, already
stored 8 sets of data. the earth resistance rC of auxiliary current
electrode C
(H) is
0.36KΩ, the earth resistance rP of auxiliary voltage
electrode P(S) is 0.27KΩ.
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