Ground Resistance Tester Models 3711 and 3731
- 32 -
Operating Reference Card
Included with the Model 3711 and 3731 you will find an operating
reference card like the one shown here.
This card summarizes all the features of the Model 3711 and 3731.
Ω
Ω
!" #!$
Ω
% &! '
% &! #(
& ! "
) * $
% + !
, - . ( -#
) % * '# $ !! /
) % '# 0" ! $ /
% &! $ #!$
Figure 32
Field Test Loop
The test loop of 25Ω (Fig. 33) is provided to perform a quick check of the
instrument. Check the clamp-on ground resistance tester by clamping
around the loop; the 3711 or 3731 should read between 24.2Ω and
25.8Ω.
* Value is for ambient temperature between 68° and 78°F. Value may differ a few counts
under or above this temperature.
Ω
Figure 33
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