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MI 3152(H) EurotestXC (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 Figure 7.27
Start the measurement.
Start of test
Test with IN, (+) positive polarity (step 1).
RCD should trip-out
Re-activate RCD.
Test with IN, (-) negative polarity (step 2).
RCD should trip-out
Re-activate RCD.
Test with 5IN, (+) positive polarity (step 3).
RCD should trip-out
Re-activate RCD.
Test with 5IN, (-) negative polarity (step 4).
RCD should trip-out
Re-activate RCD.
Test with ½IN, (+) positive polarity (step 5).
RCD should not trip-out
Test with ½IN, (-) 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 RCD1).
Trip-out current test for d.c. part, (+) polarity (step 9).
RCD should trip-out
Re-activate RCD1).
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
109


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