Benning ST 755+ - Page 89

Testing
9.5 Individual tests
5284 / 08/2023 en BENNING ST 755+ / ST 760+ 89
3 Direct current measuring method (ClassII, I
PLeak
)
The shock-proof plug of the test sample is plugged into the test socket of the device.
Use the probe tip (PEjack) for measuring on the body of the test sample and use the
test probe for measuring on all accessible conductive components and applied parts
of the test sample.
4 Alternative leakage current measuring method (ClassII, I
PLeak
)
The shock-proof plug of the test sample is plugged into the test socket of the device.
Use the probe tip (PEjack) for measuring on the body of the test sample and use the
test probe for measuring on all accessible conductive components and applied parts
of the test sample.
Procedure
1. Start the test.
2. Use the test probe to scan all accessible conductive components of the test sample.
3. If you are using the direct or differential current measuring method, change the polarity of
the mains voltage at the test socket [}page31].
4. Use the test probe again to scan all accessible conductive components of the test sample.
Test the test sample in all switch positions (test sample functions), if available.
In the case of automatic testing, the test is completed automatically. Only if the test time for
automatic testing is set to ‘infinite’(0), measurement must be completed manually.
Result
If the value measured with the alternative leakage current measuring method exceeds 1mA,
you must carry out the direct current measuring method.