ABB RED615 Technical Manual page 786

Section 10
Power quality measurement functions
780
It is also possible that there are simultaneously a dip in one phase and a swell in
other phases. The functionality of the corresponding event indication with one
inactive phase is shown in
Phase mode is "Single Phase". For the selection "Three Phase" of Phase mode, no
event indication or any activation takes place due to a non-active phase.
Voltage swell set
Voltage dip set
Voltage Int set
ST_A
ST_B
ST_C
SWELLST
DIPST
INTST
SWELLOPR
DIPOPR
INTOPR
GUID-0657A163-7D42-4543-8EC8-3DF84E2F0BF5 V1 EN
Figure 419: Concurrent dip and swell when Phase mode is "Single Phase"
In Figure 420, one phase is in dip and two phases have a swell indication. For the
Phase Mode value "Three Phase", the activation occurs only when all the phases
are active. Furthermore, both swell and dip variation event detections take place
simultaneously. In case of a concurrent voltage dip and voltage swell, both
SWELLCNT and DIPCNT are incremented by one.
Also Figure 420 shows that for the Phase Mode value "Three Phase", two different
time moment variation event swell detections take place and, consequently,
DIPCNT is incremented by one but SWELLCNT is totally incremented by two.
Both in Figure 419 and
sufficient for detections to take place.
Figure 419. Here, the "Swell + dip" variation type of
U_A
U_C
U_B
Figure 420 it is assumed that variation durations are
1YHT530004D05 D
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615 series
Technical Manual