Operation Manual

MI 3309 BT DeltaGT Single test
49
Measuring RCD
 Select the RCD test function.
 Select test mode.
 Set test parameters.
 Connect the DeltaGT MAINS terminal to mains socket protected by tested RCD
(see Figure 5.36a).
 Depending on the type of PRCD, it may be necessary to manually switch it on.
 Press the TEST key to perform measurement.
If both starting polarities are selected:
 Reactivate tested RCD.
 Store the result by pressing MEM key (optional).
Figure 5.37: Examples of (P)RCD single test results
Displayed results:
Main result(s) ......... trip out time(s) at selected starting polarity
U ............................ voltage U
L-PE
5.2.10.2 Automatic (P)RCD test
(P)RCD autotest function is intended to perform a complete (P)RCD analysis (trip-out
times at different residual currents and starting polarity phases) .
(P)RCD autotest procedure
(P)RCD Autotest steps Notes
 Select the RCD (PRCD) test function.
 Set AUTO mode.
 Select test parameters.
 PRCD: Connect tested PRCD / device to an external
voltage socket. Connect the IEC cord to the
instrument´s MAINS terminal and PRCD (see Figure
5.36b). Or connect tested PRCD between test
socket and IEC connector of the DeltaGT Connect
the instrument to mains voltage (see Figure 5.36c).
Depending on the type of PRCD, it may be
necessary to manually switch it on.
 RCD: Connect the DeltaGT MAINS terminal to mains
socket protected by tested RCD (see Figure 5.36a).
 Press the TEST key
 Test with IN, 0 (step 1).
(P)RCD should trip-out
 Re-activate (P)RCD.
 Test with IN, 180 (step 2).
(P)RCD should trip-out
 Re-activate (P)RCD.
 Test with 5IN, 0 (step 3).
(P)RCD should trip-out
 Re-activate (P)RCD.