AEMC 4500 - Electrode Spacing and Systems

Digital Ground Resistance Tester Model 4500 31
Procedure
• ShortXandXv(C1,P1)
• ShortYandZ(P2,C2)
• ConnectXtogroundrodtobemeasured
• ConnectZtoanelectrode
• Measureasinthethree-pointmethod
Y
Z
X
X
v
TEST RANGETEST CURRENT
2
10
50
2
20
200
2
20
Grounding conductor
Ground level
Ground rod
Butt plate
Utility pole
Te rminals shorted Auxiliary rod
(Y-Z shor
ted)
Figure 16
4.7 Continuity Measurement
After the shorting strip has been properly positioned between X and Xv
(C1,P1),connecttheY(P2)andZ(C2)terminalstogetheraswell.
Continuity measurement is made with two leads, one from X-Xv, the other
fromY-Z(P2,C2);pushthe“TEST”buttontomeasure.