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EIN/AUS
ON/OFF
SPEICHERN
MEM
HILFE HELP
KAL CAL
IT 120 B
IT 120 B
L1
L2
L3
PE
R
E
Zi
L1
PE
L2
L
/
L
1
N
/
L
2
PE
/
L3
IMD
Figure 11.5: Connection of test commander and universal test cable
Step 4 Before measuring, please observe the warnings displayed and the online voltage/ termi-
nal monitor. If you do not observe any problems, press the TEST key. After the measu-
rement, the measuring results are displayed together with a PASS/ FAIL information (if
applicable).
Figure 11.6: Example of a rst fault current measuring result
Displayed results:
I
SC1
rstfaultcurrentbetweenL1andthePEconductor
I
SC2
rstfaultcurrentbetweenL2andthePEconductor
If required, it is possible to save the displayed measuring results. Please refer to chapter 6.1 for
further information. „Saving measuring results“.
11.4 Technical data
Here, only technical data are listed which differ from the data in chapter 9.
11.4.1 First fault leakage current (ISFL)
Measuring range (mA) Resolution (mA) Accuracy
0.0 - 9.9 0.1 ± (5 % of reading + 3 digits)
10 - 19 1 ± (5 % of reading)
measuringresistance approx.1000Ω
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  • when mesuring lightihg earth protection instrument show that is not cinected. why.
    Submitted on 12-8-2023 at 22:36

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