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GMC-I Messtechnik GmbH
d) After selecting an object with four legs the following screen is shown. After connecting the flexible
AC current sensors to ERP-1 adapter and connecting the adapter to the earth tester; when the
number of wraps and type of current sensors are set, the right side of the screen will show the
following values: U
N
– interference voltage, f
N
– interference frequency and I
L
– leakage current:
e) Press
START
button to display the following screen. Follow the command on the screen and fix the
clamps to the first leg (if not already done). The measurement will be triggered by pressing again
START
button.
f) This screen is shown for 5 seconds from the moment of displaying calculated R
1
value, then screen
"before the second measurement" will be shown. You may recall the last measurement result by
pressing
ENTER
(the screen with the first measurement is shown for 5 seconds).
Similarly to the situation before the first measurement. The same applies before the measurement
on third and fourth leg.
