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5.2.2
Starting of RCD Test without RCD trip-
ping, Function UB/RE
The contact voltage UB and the ground resistance
RE are measured during this test by applying a cur-
rent amounting to 40 % of the nominal residual cur-
rent. The contact voltage displayed is extrapolated
to nominal residual current I∆N or to double the no-
minal residual current I∆N for selective RCDs.
Connect test lead / mains connection cable to
test instrument.
Connect test lead / mains connection cable to
the UUT, as described in figure 1 or 2.
Select desired measurement function Vc/RE
using function selection switch (31).
Set nominal residual current selection (20) to
desired nominal current (depending on RCD).
Select Limitvalue via contact voltage using key
"Vc/UL" (19).
Touch contact electrode PE (21). Note display.
If the symbol "Socket Error" (4) is displayed, a
PE error is present.
Press key "Start" (22).
After successful test the display key (32) is
used to switch between measurement result.
Starting of RCD Test
I∆N:
Display at contact voltage
Display at earth resistance
Measurement results can be saved via pres-
sing key "Store" (25).
If the condition of a faulty socket is to be saved,
first press key "Start" (22). Upon hearing the
"Error Signal" press the key "Store" (25).
If the RCD trip, the "Attention" symbol (1) and
"Socket error" symbol (4) are displayed
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