ABB SACE Tmax XT2 User Manual page 109

Above V Th and In the Counters - Day -1 and Counters - Cumulative submenus some counters are available for
Below V Th sequence measurements:
Counters
Over V Th
Under V Th
Supplemental list
Counters (Overvoltage)
Last time stamp
Last value
Actual number of O.
Actual [day -2 ... day -7]
number of O.
Counters (Undervoltage)
Last time stamp
Last value
Actual number of O.
Actual [day -2 ... day -7]
number of O.
V Interruption T
he counter V Interruption is to be understood as the reduction of the RMS value of the line-to-
(Interruption)
line voltage below the V Interruption threshold. Th set, for a duration of less than 40 ms (short
voltage sag).
The counter is available in the two sub-menus Counters - Day -1 and Counters - Cumulative
(previous day or cumulative)
Supplemental list
Counters (Interruptions)
Last record
Last value
Last Duration
Actual number of I.
Actual [day -2 ... day -7]
number of I.
1SDH002031A1002 ECN000092998
Description
Counts the times when the average value of the positive sequence (with the sense of
rotation of the phases set: 1-2-3) or negative sequence (with the rotation direction of
the phases set: 3-2-1) exceeds V Threshold High. The count refers to the interval of
the menu of reference (previous day or cumulative)
Counts the times when the average value of the positive sequence (with the sense of
rotation of the phases set: 1-2-3) or negative sequence (with the rotation direction of
the phases set: 3-2-1) falls below V Threshold Low. The count refers to the interval of
the menu of reference (previous day or cumulative)
Description
Date and time referred to the last Over V Th counter record
Value of the last breach of the Over V Th threshold [V]
Count of Over V Th referring to the current day
Count of Over V Th detected in the last seven days of activity,
calculated using the unit's internal clock
Description
Date and time referred to the last Under V Th counter record
Value of the last sag below the Under V Th threshold [V]
Count of Under V Th referring to the current day
Count of Under V Th detected in the last seven days of activity,
calculated using the unit's internal clock
NOTE: Since the counter is based on the calculation of the RMS value, it is possible
that two interruption of equal duration may be evaluated differently depending on the
moment in which they occur:
Figure 27
Description
Date and time referred to the last V Interruption counter record
Value of the last sag below the V Interruption threshold [V]
Duration of the last sag below the V Interruption threshold [ms]
Count of V Interruption referring to the current day
Count of V Interruption detected in the last seven days of activity,
calculated using the unit's internal clock
Rev. B
SACE Tmax XT2 – XT4 | 109