MI 3152(H)
Eurotest
XC (2,5 kV)
Tests and measurements
108
7.8
RCD Auto – RCD Auto test
RCD Auto test function performs 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.
RCD Auto test procedure
RCD Auto test steps
Notes
Enter the
RCD Auto
function.
Set test parameters / limits.
Connect test cable to the instrument.
Connect test leads or Plug commander to the object
under test, see
Start the measurement.
Start of test
Test with I
N
, (+) positive polarity (step 1).
RCD should trip-out
Re-activate RCD
.
Test with I
N
, (-) negative polarity (step 2).
RCD should trip-out
Re-activate RCD
.
Test with 5
I
N
, (+) positive polarity (step 3).
RCD should trip-out
Re-activate RCD
.
Test with 5
I
N
, (-) negative polarity (step 4).
RCD should trip-out
Re-activate RCD
.
Test with ½
I
N
, (+) positive polarity (step 5).
RCD should not trip-out
Test with ½
I
N
, (-) negative polarity (step 6).
RCD should not trip-out
Trip-out current test, (+) positive polarity (step 7).
RCD should trip-out
Re-activate RCD
.
Trip-out current test, (-) negative polarity (step 8).
RCD should trip-out
Re-activate RCD
1)
.
Trip-out current test for d.c. part, (+) polarity (step 9).
RCD should trip-out
Re-activate RCD
1)
.
Trip-out current test for d.c. part, (-) polarity (step 10).
RCD should trip-out
Re-activate RCD
.
Save results (optional).
End of test
1)
Steps 9 and 10 are performed if parameter Use is set to ‘other’ and Type to EV RCD or
MI RCD.
Step 1
Step 2
