MI 3321 MultiservicerXA
Single tests in PAT testing mode
65
Connect
test lead toTP1 test socket of the instrument and the PRCD’s output.
Press the
START
key to perform measurement.
If
both current polarities
are selected:
Reactivate
tested PRCD
Press the
START
key to perform measurement with opposite current polarity.
Examples of PRCD test result
Displayed results:
Main result ............. last measured results
Sub-results ............ all results are displayed as sub-results
Ul-pe ...................... voltage U
L-PE
6.2.10.2 Automatic PRCD test
PRCD autotest function is intended to perform a complete PRCD analysis. (trip-out
times at different residual currents and current phases) .
PRCD autotest procedure
PRCD Autotest steps
Notes
Select the PRCD test function.
Set Auto test mode.
Select test parameters.
Connect tested PRCD device to an external voltage
socket (see figure above). Depending on the type of
PRCD, it may be necessary to manually switch the
PRCD on.
Connect test lead toTP1 test socket of the instrument
and the PRCD’s output.
Press the START key.
Start of test
Test with I
N, 0
(step 1).
PRCD should trip-out
Re-activate PRCD.
Test with I
N, 180
(step 2).
PRCD should trip-out
Re-activate PRCD.
Test with 5
I
N, 0
(step 3).
PRCD should trip-out
Re-activate PRCD.
Test with 5
I
N, 180
(step 4).
PRCD should trip-out
Re-activate PRCD.
Test with ½
I
N, 0
(step 5).
PRCD should not trip-out
Test with ½
I
N, 180
(step 6).
PRCD should not trip-out
End of test.
