ABB | SACE Tmax XT
110 | © 2019 ABB | 1SDH002039A1002 - ECN000093027 - Rev. A
Measurements | 5 - Network Analyzer
Over V Th and Under V Th
Certain counters relating to the sequence measurements are available in the
Counters
-
Day
-
1 and Counters
-
Cumulative
submenus:
Counters
Description
Over V Th
Counts the number of times that the average value of the positive sequence (in
the set direction of rotation of the phases: 1-2-3) or negative sequence (in the set
direction of rotation of the phases: 3-2-1) exceeds the
V Threshold High
threshold.
The count refers to the reference menu interval (previous day or cumulative)
Under V Th
Counts the number of times that the average value of the positive sequence (in
the set direction of rotation of the phases: 1-2-3) or negative sequence (in the set
direction of rotation of the phases: 3-2-1) falls below the V Threshold Low threshold.
The count refers to the reference menu interval (previous day or cumulative)
Additional List
Counters (Over Voltage)
Description
Last time stamp
Date and time of last recording of the
Over V Th
counter
Last value
Value of the last swell above the
Over V Th
[V] threshold
Actual number of O.
Over V Th
count for the current day
Actual [day -2 ... day -7]
number of O.
Over V Th
count of the last seven days of activity, calculated using the
internal clock of the unit
Counters (Under Voltage) Description
Last time stamp
Date and time of last recording of the
Under V Th
counter
Last value
Value of the last sag below the
Under V Th
[V] threshold
Actual number of O.
Under V Th
count for the current day
Actual [day -2 ... day -7]
number of O.
Under V Th
count of the last seven days of activity, calculated using the
internal clock of the unit
V microinterr. (Interruption)
The
V microinterr
counter should be understood as reduction of the RMS value of the line-to-line voltage
below the
V microinterr.
Th set
threshold for less than 40 ms (short time voltage sag).
The counter is available in the two submenus
Counters
-
Day
-
1
and
Counters
-
Cumulative
(previous day or
cumulative)
NOTE:
Since the counter is based on the RMS value calculation, two rapid voltage sags of
equal duration may be evaluated differently, depending on when they occur:
t
t
Drop detected
Drop not detected
Additional List
Counters
(Interruptions)
Description
Last instant
Date and time of last recording of the
V microinterr
counter
Last value
Value of last sag below the
V microinterr
[V] threshold
Last duration
Value of last sag below the
V microinterr
[ms] threshold
Actual number of I.
V microinterr
count for the current day
Actual [day -2 ... day -7]
number of I.
V microinterr
count of the last seven days of activity, calculated using the
internal clock of the unit
