ABB SACE Tmax XT5 Operation And Maintenance Manual page 112

Over V Th and Under V Th Certain counters relating to the sequence measurements are available in the Counters - Day -1 and Counters
V microinterr. (Interruption) The V microinterr counter should be understood as reduction of the RMS value of the line-to-line voltage
110 | © 2019 ABB | 1SDH002039A1002 - ECN000093027 - Rev. A
- Cumulative submenus:
Counters Description
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
Over V Th
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)
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
Under V Th
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)
Last time stamp
Last value
Actual number of O.
Actual [day -2 ... day -7]
number of O.
Counters (Under Voltage) Description
Last time stamp
Last value
Actual number of O.
Actual [day -2 ... day -7]
number of O.
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:
Drop detected
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Additional List
Counters
Description
(Interruptions)
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] V microinterr count of the last seven days of activity, calculated using the
number of I. internal clock of the unit
Description
Date and time of last recording of the Over V Th counter
Value of the last swell above the Over V Th [V] threshold
Over V Th count for the current day
Over V Th count of the last seven days of activity, calculated using the
internal clock of the unit
Date and time of last recording of the Under V Th counter
Value of the last sag below the Under V Th [V] threshold
Under V Th count for the current day
Under V Th count of the last seven days of activity, calculated using the
internal clock of the unit
ABB | SACE Tmax XT
Drop not detected
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Measurements | 5 - Network Analyzer