HT instruments SIRIUS89N - Manual (Page 31)

SIRIUS89N
EN - 29
6.3.2.3. Results of "AUTO" mode
4. Press the
START key once to execute the test. The instrument carries out the
following six tests with different values of rated current:
1/2I ∆n with 0° current waveform (the RCD shall not trip).
1/2I ∆n with 180° current waveform (the RCD shall not trip).
I ∆n with 0° current waveform (the RCD trips, message "
RESUME RCD").
I
∆n
with 180° current waveform (the RCD trips, message " RESUME RCD").
5I ∆n with 0° current waveform (the RCD trips, message "
RESUME RCD").
5I
∆n
with 180° current waveform (the RCD trips, end of the test).
The test is good if all values of tripping times are within the limits reported in
Table 3.
CAUTION
Never disconnect the test leads when the message "MEASURING" is
displayed.
RCD 05.06.01 Tripping time (expressed in
milliseconds).
Value of contact voltage U
t
detected referred to the
rated value of the RCD
current set.
OK: RCD passed the test.
At the end of the test if
all six tests resulted to
be positive, the
instrument displays the
screen alongside
relative to the last
measurement effected.
0° 180°
x1/2 >999ms >999ms
x1 55ms 65ms
x5 20ms 30ms
FRQ=50.0Hz Ut= 1V
VP-N=231V VP-PE=231V
RCD OK
AUTO 30mA 50V
!
FUNC IdN RCD UL Contact Voltage Limit value
Working mode RCD nominal current RCD type
The test can be stored pressing the
SAVE key twice (according to paragraph 9.1).
START
STOP