Page 116 - MCCB-XT5

ABB | SACE Tmax XT

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:

Increase detected Increase not detected

t t

Additional List

Counters (Interrup- Description
tions)
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] Spikes count of the last seven days of activity, calculated using the
number of S. internal clock of the unit

Sags Certain counters relating to sags are available in the Counters - Day -1 and Counters - Cumulative
submenus:
Counters (Interrup- Description
tions)
Counts the number of times that any line-to-line voltage falls below the V
Sags Short
sag Th Short threshold for longer than V sag dur Short
Counts the number of times that any line-to-line voltage falls below the V
Sags Middle
sag Th Middle threshold for longer than V sag dur Middle
Counts the number of times that any line-to-line voltage falls below the V
Sags Long
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 (Interrup- Description
tions)
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] Sags Short count of the last seven days of activity, calculated using the
number of S. internal clock of the unit

Continued on the next page

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