Rcd Auto - Rcd Auto Test - METREL EurotestXC Quick Manual

MI 3152(H) EurotestXC (2,5 kV)
RCD Auto – RCD Auto test
4.8
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
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 4.28
Start the measurement.

Test with I d.c., (+) positive polarity (step 1)
N
Re-activate RCD.

Test with I d.c., (-) negative polarity (step 2)
N
Re-activate RCD.

Test with I , (+) positive polarity (step 3)
N
Re-activate RCD if required.

Test with I , (-) negative polarity (step 4)
N
Re-activate RCD if required.

Test with 5I , (+) positive polarity (step 5)
N
Re-activate RCD.

Test with 5I , (-) negative polarity (step 6)
N
Re-activate RCD.

Test with ½I
, (+) positive polarity (step 7)
N
Test with ½I
, (-) negative polarity (step 8)
N
Trip-out current test, (+) positive polarity (step 9)
Re-activate RCD.

Trip-out current test, (-) negative polarity (step 10)
Re-activate RCD

Trip-out current test for d.c. part, (+) polarity (step 11).
Re-activate RCD

Trip-out current test for d.c. part, (-) polarity (step 12).
Re-activate RCD.

Save results (optional).
1)
Steps 1, 2 11 and 12 are performed only when parameter Use is set to 'other' and parameter Type
is set to 'EV RCD', 'EV RCM' or 'MI RCD'. Trip-out times are measured according to IEC 62752 or
IEC 62955.
2)
When parameter Use is set to 'other' and parameter Type is set to 'EV RCD', 'EV RCD' or 'MI
RCD', trip-out times or non-operating times for a.c. residual current are measured according to IEC
62752 or IEC 62955.
1)
.
1)
.
Notes
Start of test
1)
RCD should trip-out
.
1)
RCD should trip-out
.
2)
RCD should trip-out
.
RCD should not trip-out during
non-operating
residual current (IEC 62955).
2)
RCD should trip-out
.
RCD should not trip-out during
non-operating
residual current (IEC 62955).
2)
RCD should trip-out
.
2)
RCD should trip-out
.
2)
RCD should not trip-out
.
2)
RCD should not trip-out
.
2)
. RCD should trip-out
2)
. RCD should trip-out
RCD should trip-out
RCD should trip-out
End of test
41
Tests and measurements
time for
time for
a.c.
a.c.