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At the beginning of the test it has to be checked whether the selected testing
procedure complies with the protection class of the connected test object.
8.1.1
Switching the BENNING ST 710 ON/ OFF
Press and hold the keys 2 and 3 for approx. 3 seconds to switch the BENNING ST 710 on.
2 acoustic signals confirm that the device is switched on. Press the keys again to switch the
device off.
After approx. 3 minutes, the BENNING ST 710 switches off automatically (APO, Auto Power-
Off). It switches on again when the keys 2 and 3 are pressed. An acoustic signal indicates that
the device has switched off automatically. During voltage measurement on an external shock-
proof socket, the automatic switch-off is deactivated.
8.1.2
Testing procedure
The BENNING ST 710 is intended for electrical safety tests according to DIN VDE 0701/ 0702
and ÖVE/ ÖNORM E 8701. Please refer to the current version of the standards for detailed
information concerning the tests and limiting values.
Automatically, the BENNING ST 710 verifies the type of the connected test object and informs
the user in case of incorrect preselection of the testing procedure [ 2 ... 4 ]
8.2 Testing of electrical devices / equipment according to DIN VDE 0701/ 0702 and ÖVE/
ÖNORM E 8701
Prior to test, a visual inspection of the test object has to be carried out. In case
of possible damages, the test must be stopped.
8.2.1
Testing of devices of protection class I
-
Testing of devices with protective conductor and accessible conductive parts which are
connected to the protective conductor
-
Connect the test object to the test socket 1 of the BENNING ST 710.
-
Plug the 4 mm safety plug of the test cable with alligator clip into the 4 mm safety socket 6
and establish a connection with a metal part of the test object.
-
Switch the test object on.
-
Press the key 2 to start the automatic testing procedure.
-
The test starts with measuring the protective conductor resistance R
measurement is stopped without a measuring result and a cross is shown next to the R
symbol. "FAIL" appears on the display to confirm that the measurement has been stopped.
-
If R
< 20 Ω (but higher than the maximum admissible limiting value), the measured value
PE
of R
is shown on the display. A
PE
has been exceeded.
01/ 2009
next to the R
PE
BENNING ST 710
. If R
PE
symbol confirms that the limiting value
>~ 100 Ω, the
PE
PE
15
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