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8.
Measuring with the BENNING ST 725
8.1 Preparations for measuring
Operate and store the BENNING ST 725 only at the specified storage and operating tempera-
tures conditions. Do not permanently expose the device to sunlight.
-
Check rated voltage and rated current details specified on the safety measuring leads.
-
Strong sources of interference in the vicinity of the BENNING ST 725 might lead to unstable
readings and measuring errors.
Before starting the BENNING ST 725, always check the device, the lines and the
test object for damages.
Please make sure not to exceed the maximum breaking capacity/ lamp load of
the test socket of the BENNING ST 725 (see chapters 7.4 and 7.5). Exceeding the
values might cause tripping of the fuses and damaging of the BENNING ST 725.
Damages due to overload are excluded from possible warranty claims.
The plug of the mains connection cable can be connected with the socket K of
the BENNING ST 725 in one position only (see white mark). Do not exert force
to the plug of the mains connection cable in order to avoid damaging of the
BENNING ST 725.
Before starting the test, switch the test object on (mains switch ON).
If the BENNING ST 725 is connected to the mains voltage, the test object will be
supplied with mains voltage during the protective conductor/ contact current
measurement. During measurement, check the test object for proper function-
ing!
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.
8.2 Switching the BENNING ST 725 ON/ OFF
-
Press and hold the keys 2 and 3 for approx. 3 seconds to switch the BENNING ST 725 on.
Acoustic signals confirm that the device is switched on. Press the keys again to switch the
device off.
-
After approx. 2 minutes, the BENNING ST 725 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.
8.3 Testing the mains voltage on external shock-proof socket
-
Connect the mains connection cable to the mains connection socket K of the
BENNING ST 725.
-
Connect the shock-proof plug to the shock-proof socket to be tested. With the mains voltage
being applied, the voltage measurement will start automatically.
-
Depending on the external conductor position of the shock-proof socket, the voltage
potentials between the connecting terminals L, N and PE will be shown on the display for
approx. 3 seconds.
-
If the voltage potentials are within the following limiting values, there will be a
"LN", "LE" and "NE" symbols.
07/ 2018
or
BENNING ST 725
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