ABB XT7, Operation And Maintenance Manual

Page: 125 / 193

ABB | SACE Tmax XT
Ekip Touch - Measurements | 5 - Network Analyzer 123 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
Spikes The Spikes counter should be understood as increase of the RMS value of the line-to-line voltage above the
set V Spike Threshold threshold for less than 40 ms (short time voltage spike).
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 spikes of
equal duration may be evaluated differently, depending on their amplitude:
t t
Increase detected Increase not detected
Additional List
Counters
(Interruptions)
Description
Last time stamp Date and time of last recording of the Spikes counter
Last value Value of last swell above Spikes [V] threshold
Last duration Duration of last swell above Spikes [ms] threshold
Actual number of S.
Spikes
count for the current day
Actual [day -2 ... day -7]
number of S. Spikes count of the last seven days of activity, calculated using the internal
clock of the unit
Sags Certain counters relating to sags are available in the
Counters
-
Day
-
1 and Counters
-
Cumulative
submenus:
Counters
(Interruptions)
Description
Sags Short
Counts the number of times that any line-to-line voltage falls below the V sag
Th Short
threshold for longer than
V sag dur Short
Sags Middle
Counts the number of times that any line-to-line voltage falls below the V sag
Th Middle
threshold for longer than
V sag dur Middle
Sags Long
Counts the number of times that any line-to-line voltage falls below the V sag
Th Long
threshold for longer than
V sag dur Long
The count refers to the reference menu interval (previous day or cumulative)
NOTE: since an event may fall under more than one category, only the counter of the main
type (Long > Middle > Short) is increased
Additional List
Counters
(Interruptions)
Description
Last time stamp Date and time of last recording of the Sags Short counter
Sags Middle Value of last sag below the Sags Short [V] threshold
Sags Long Duration of last sag below the Sags Short [ms] threshold
Actual number of S.
Sags Short
count for the current day
Actual [day -2 ... day -7]
number of S. Sags Short count of the last seven days of activity, calculated using the internal
clock of the unit
Continued on the next page