Benning ST 755+ - Figure 14 Testing the Insulating Resistance, Class

Testing
9.5 Individual tests
5284 / 08/2023 en BENNING ST 755+ / ST 760+ 81
1 LNtoPE (ClassI, R
Insu-1
)
The shock-proof plug of the test sample is plugged into the test socket of the device.
2 Secondary sidetoPE (ClassI, R
Insu-2
)
The shock-proof plug of the test sample is plugged into the test socket of the device.
Use the test probe for measuring on the secondary side of the test sample.
LNtosecondary side (ClassI, R
Insu-3
)
The shock-proof plug of the test sample is plugged into the test socket
of the device. Use the test probe for measuring on the secondary side of
the test sample.
3 LNtoaccessible parts without PE (ClassI, R
Insu-4
)
The shock-proof plug of the test sample is plugged into the test socket of the device.
Use the test probe for measuring on all components of the test sample without
PEconnection.
4 5
6
Figure14: Testing the insulating resistance, ClassII (connection diagram exemplary for VDE0701 and
VDE0702, circuit diagram)
4 LN to test body (ClassII, R
Insu-1
)
The shock-proof plug of the test sample is plugged into the test socket of the device.
Use the test probe for measuring on all accessible conductive components of the test
sample.
5 Secondary side to test body (ClassII, R
Insu-2
)
Use the probe tip (PEjack) for measuring on the body of the test sample and use the
test probe for measuring on the secondary side of the test sample.
6 LNtosecondary side (ClassII, R
Insu-3
)
The shock-proof plug of the test sample is plugged into the test socket of the device.
Use the test probe for measuring on the secondary side and on the body of the test
sample.