Atec AEMC-3711-3731 User Manual
Atec Equipment
Models 3711 & 3731 (pdf)
08/02
Technical Assistance (800) 343-1391
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Models 3711 and 3731 measure
ground rod and grid resistance in any
environment without the use of auxil-
iary ground rods. Clamp-on ground
resistance testers are used on
multi-grounded systems without
disconnecting the ground under test.
The Models 3711 and 3731 simply
clamp around the ground conductor
or rod and measure the resistance
to ground fast and accurately.
By performing measurements on
installed ground systems, the user
also verifies the quality of the
grounding connections and bonds.
Resistance and continuity of grounding
loops around pads and buildings may
also be measured.
Both models include a current
measurement function. The probe’s
high sensitivity enables measurement
of leakage current flowing to ground
or circulating in ground loops down to
1mA and neutral and phase currents
to 30Arms. This feature provides
additional information which is vital in
distribution ground networks carrying
higher levels of noise and harmonics
that affect power quality.
The Model 3731 offers an alarm
function and a memory (logging)
function. In the alarm mode, the probe
will audibly and visually indicate read-
ings beyond set point. The user may
also have the alarm initiated above or
below the set point. This alarm feature
permits quick field checks where only
“pass” or “fail” readings will suffice.
Clamp-On Ground Resistance Tester
Models 3711 & 3731
US Patent No: 362,639