"Single Phase". For the selection "Three Phase" of Phase mode, no event indication or
any activation takes place due to a non-active phase.
U_A
U_C
U_B
ST_B
ST_C
ST_A
DIPST
INTST
SWELLST
SWELLOPR
INTOPR
DIPOPR
Voltage Int set
Voltage dip set
Voltage swell set
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
GUID-0657A163-7D42-4543-8EC8-3DF84E2F0BF5 V1 EN
Figure 367: Concurrent dip and swell when Phase mode is "Single Phase"
In Figure 368, 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 368 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
367 and Figure 368 it is assumed that variation durations are sufficient for detections
to take place.
Section 10 1MRS758755 A
Power quality measurement functions
688 REC615 and RER615
Technical Manual
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