Hioki FT3151 - Connecting Test Leads

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Measuring Earth Resistance Simply
(Simplied Measurement, 2-Pole Measurement Method)
Connecting test leads
“Connection diagram for 2-pole measurement method” shows
connection for a simplied measurement using the grounded side
of a commercial power supply. Connect the supplied measurement
cables to the terminals of the instrument as shown below. Set the
range selector to the mark
or ~V, connect terminal E to
the measurement object E, and then, connect terminal H(C) to the
grounded side of a commercial power supply.
Measurement
terminal
Measuring cable Object to be connected
E Black Measurement object E
S(P) Not connected
H(C) Red or yellow Ground line (Ro)
5 m or more
Earthing
electrode
E
RedBlack
Connection diagram for 2-pole measurement method
A metal water pipe or similar can also be used as existing earthing
body for simplied measurement.
The distance between the existing earthing body and the
measurement object must be at least 5 meters. If the distance is
less, correct results will not be obtained.
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Appx. Ind.