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Connect device under test to mains test socket. For Isub-S test, additionally connect test lead to P/S terminal
on the instrument, and then connect test lead to a device.
Start measurement.
Measurement can be stopped manually or by timer.
Save results (optional).
Figure 4.32: Examples of Sub-leakage measurement results
Note:
When P/S probe is connected during the Sub-leakage measurement, then the current through it is also
considered.
4.1.9 Differential Leakage
Figure 4.33: Differential Leakage test menu
Test results / sub-results
Idiff ............... Differential Leakage current
P ................... Power
Test parameters
Duration
Duration [Off, 2 s ... 180 s]
Change status
Change [YES, NO]
YES: The instrument measures leakage current in two sequential steps with delay* in
between. The phase voltage is firstly applied to the right live output of the mains test
socket and secondly to the left live output of the mains test socket.
NO: The phase voltage is applied only to the right live output of the mains test socket.
*Delay time
Delay [0.2 s … 5 s]