socomec DIRIS A80, Руководство по эксплуатации

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DIRIS A80
- Réf.: 540 275 B EN
DIRIS A80
PROGRAMMING
DEFINITION OF THE FUNCTIONS OF VOLTAGE DIPS AND INTERRUPTION,
AS WELL AS VOLTAGE SWELL AND OVER-CURRENTS
DIRIS A80
allows detecting events such as:
• Voltage dips
• Voltage swells
• Interruption
• Over-currents
A packet of 10 RMS ½ period curves (I1, I2, I3, In, V1,
V2, V3, U12, U23, U31) is associated with each event
detected.
At 50 Hz, a fundamental period is 20 ms, that is 1/2 a
RMS period at a mean value of 10 ms.
An RMS ½ period curve is made up of 120 points. For
a signal at 50 Hz it represents a history on 1.2 sec. (60
Hz for 1 sec.). A conigurable trigger (Pre-post mode
from 0 to 100 %) allows distributing the number of
points around the event (50 % / 50 % = 60 points
before the event and 60 points after).
For voltage dips, swells and over-currents, an event
starts if one of the quantities exceeds the determined
threshold. It ends if all the quantities have come back
to normal condition (hysteresis).
For voltage interruption, an event starts if all the quan
-
tities exceed the determined threshold. It ends if one
of the quantities has come back to normal condition.
Depending upon the length, the events are recorded
in the following manner:
• Event < 1.2 sec. (50 Hz), 1 packet of 10 curves
over 1.2 sec.
• 1.2 sec. > Event < 2.4 sec. (50 Hz), 2 packets
following 10 curves, i.e. 2.4 sec.
• Event > 2.4 sec. (50 Hz), 1 packet of 10 curves
consisting of the beginning of the event, 1
packet of 10 curves consisting of the end of
the event.
Between these two, the values are not avai
-
lable.
>
Logging capacity (FIFO):
• Date and time of 60 events
• Recording of 43 curves
>
Voltage dips and swells
They are memorized as per IEC 61000-4-30 and
EN50160 with a category B measurement method.
>
Voltage interruption
It is possible to conigure the outage threshold (in %
of Un), on the other hand the measurement limit of
DIRIS A80
which is 29 V AC neutral phase and 50 V
AC phase/phase must be taken into account.
>
Over-currents
The detection threshold is conigured in % of the CT
rating. Detection is made as in the case of voltage
swell.
Ureg = 400V
EVENEMENT
Enregistrement de 1,2s
Début
Fin
50% 50%
Hystérésis = 380V
Seuil = 360V
U12
t
Example: Voltage dips with a 90 % voltage threshold and 5 % hysteresis.