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BENNING ST 750 A
Press <L-N> to measure with reversed polarity.
Finish or stop the measurement by pressing <Stop>, press <Pause>/ <Next> for a measuring
pause and press <Reset> to delete the measured value.
Attention! Pressing the <Pause> button will stop the measurement. During the pause,
the test socket will remain live!
Besides the measuring result (measured val-
ue),theoverallresultisdisplayed(e.g."Pass"
byagreeneldand"Fail"byaredeld).
Please observe the notes!
Accessible conductive parts which are not con-
nected to the protective conductor are scanned
and measured by means of the probe (probe
tip) in the sub-menu ICont (contact current)!
10.8 ICont – Contact Current
During test, the test sample is supplied with mains voltage!
Contact current measurement corresponds to measurement between accessible conductive metal
parts which are not connected to the protective conductor and earth.
The contact current can be measured by means of the leakage current measurement method, the
differentialcurrentmeasurementmethod"Diff.",thedirectmeasurementmethod"Dir.",thealterna-
tiveleakagecurrentmeasurementmethod"Alt."andthedifferentialcurrentmeasurementmethod
withcurrentclamp"Clamp".
Only one probe measurement can be carried out! In the start menu, select the corresponding VDE
regulation and then theprotectionclass.In the "Test acc.toVDE....(Class .)" menu,selection
menu, press the <ICont>button.Selectthedesiredmeasurementmethod("Diff.","Dir.","Alt."or
"Clamp")andstartmeasurementbypressing<Start>.
The limiting values according to VDE 0701-0702 are taken into consideration. Press <L-N> to mea-
sure with reversed polarity. Finish or stop the measurement by pressing <Stop>, press <Pause>/
<Next> for a measuring pause and press <Reset> to delete the measured value.
Attention! Pressing the <Pause> button will stop the measurement. During the pause,
the test socket will remain live!
Besides the measuring result (measured val-
ue),theoverallresultisdisplayed(e.g."Pass"
byagreeneldand"Fail"byaredeld).
Accessible conductive parts which are
not connected with the protective conduc-
tor must be scanned by means of the
probe / probe tip (VDE 0701-0702).
10.9 ILeak – Device Leakage Current
The device leakage current measurement corresponds to the measurement between the protective
conductor as well as accessible conductive metal parts which are not connected to the protective
conductor and earth. The device leakage current can be measured by means of the leakage current
measurementmethod,thedifferentialcurrentmeasurementmethod"Diff.",thedirectmeasurement
method"Dir.",thealternativeleakagecurrentmeasurementmethod"Alt."andthedifferentialcur-
rentmeasurementmethodwithcurrentclamp"Clamp".
In the start menu, select the corresponding VDE regulation and then the protection class. In the
"Testacc.toVDE....(Class.)"menu,selectionmenu,pressthe<ILeak> button. Select the desired
measurementmethod("Diff.","Dir.","Alt."or"Clamp").Startmeasurementbypressing<Start>.
The limiting values according to VDE 0751 are taken into consideration.
Press <L-N> to measure with reversed polarity. Finish or stop the measurement by pressing <Stop>,
press <Pause>/ <Next> for a measuring pause and press <Reset> to delete the measured value.
Attention! Pressing the <Pause> button will stop the measurement. During the pause,
the test socket will remain live!
29


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