MI 3101 EurotestAT: Measurements
Testing RCD
57
Step 3
Step 4
Step 5
Step 6
Figure 5.17: Individual steps in RCD autotest
Displayed results:
.... Step 1 trip-out time (½
I
N, 0º),
.... Step 2 trip-out time (½
I
N, 180º),
... Step 3 trip-out time (I
N, 0º),
... Step 4 trip-out time (I
N, 180º),
... Step 5 trip-out time (5
I
N, 0º),
... Step 6 trip-out time (5
I
N, 180º),
Uc....... Contact voltage for rated I
N.
Notes:
The autotest sequence is immediately stopped if any incorrect condition is detected,
e.g. excessive Uc or trip-out time out of bounds.
Auto test is finished without
tests in case of testing the RCD type A with rated
residual currents of I
n = 300 mA, 500 mA, and 1000 mA. In this case auto test
result passes if all previous results pass, and indications
and
are omitted.
