METREL EurotestCOMBO MI 3125 User Manual

MI 3125 / BT EurotestCOMBO Measurements
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Displayed results:
I ........... Trip-out current,
Uci Contact voltage at trip-out current I or end value in case the RCD didn’t
trip,
t ........... Trip-out time.
5.4.4 RCD Autotest
RCD autotest function is intended to perform a complete RCD test (trip-out time at
different residual currents, trip-out current and contact voltage) in one set of automatic
tests, guided by the instrument.
Additional key:
HELP / DISPLAY
Toggles between top and bottom part of results field.
RCD autotest procedure
* model MI 3125 BT
RCD Autotest steps
Notes
 Select the RCD function using the function selector switch.
 Set sub-function AUTO.
 Set test parameters (if necessary).
 Connect test cable to the instrument.
 Connect test leads to the item to be tested (see figure
5.17).
 Press the TEST key to perform the test.
Start of test
 Test with I
N
, 0 (step 1).
RCD should trip-out
 Re-activate RCD.
 Test with I
N
, 180 (step 2).
RCD should trip-out
 Re-activate RCD.
 Test with 5I
N
, 0 (step 3).
RCD should trip-out
 Re-activate RCD.
 Test with 5I
N
, 180 (step 4).
RCD should trip-out
 Re-activate RCD.
 Test with ½IN, 0 (step 5).
RCD should not trip-
out
 Test with ½IN, 180 (step 6).
RCD should not trip-
out
 Trip-out current test, 0 (step 7).
RCD should trip-out
 Re-activate RCD.
 Trip-out current test, 180 (step 8).
RCD should trip-out
 Re-activate RCD.
 Store the result by pressing the MEM key (optional)*.
End of test

METREL EurotestCOMBO MI 3125 Specifications

General

Brand	METREL
Model	EurotestCOMBO MI 3125
Category	Measuring Instruments
Language	English