ABB | SACE Emax 2
116 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
Ekip Touch protection trip unit | 17 - Hi-Touch measurements
Continued from the previous page
Short voltage interruption
The short duration voltage drop is to be understood as a decrease in the RMS value of the line-to-line voltage
below the set threshold, for a duration less than 40 ms.
NOTE:
Since the counter is based on the calculation of the RMS value, two sudden drops
in voltage of equal duration may be evaluated differently depending on when they occur (see
the attached example).
t
t
Drop detected
Drop not detected
The alarm threshold available in the menu,
V microinterr. Th
, is expressed as %Un.
The cumulative (
V microinterr.
) and last day counters are available in the corresponding menus.
Short duration voltage increases
The short duration voltage increase is to be understood as an increase in the RMS value of the line-to-line
voltage above the set threshold, for a duration less than 40 ms.
NOTE:
Since the counter is based on the calculation of the RMS value, two rapid increases
in voltage of equal duration may be evaluated differently depending on their amplitude (see
the attached example).
t
t
Increase detected
Increase not detected
The alarm threshold available in the menu,
V Spike Threshold
, is expressed as %Un.
The cumulative (
Peaks
) and last-day counters are available in the corresponding menus.
Slow voltage drops
Slow voltage drops are the lowering of any line-to-line voltage, under one of the set thresholds, for a duration
greater than the set time.
The parameters that can be set for the control are available in the
Sags
submenu:
Parameter
Description
V sag Th Short
It defines the first alarm threshold.
It is expressed as %Un.
V sag dur short
In the event of dropping under the first alarm threshold, it defines the time
beyond which the alarm counter is increased.
V sag Th Middle
It defines the second alarm threshold.
It is expressed as %Un.
V sag dur middle
In the event of dropping under the second alarm threshold, it defines the
time beyond which the alarm counter is increased.
V sag Th Long
It defines the third alarm threshold.
It is expressed as %Un.
V sag dur long
In the event of dropping under the third alarm threshold, it defines the
time beyond which the alarm counter is increased.
Continued on the next page
Summary of Contents for SACE Emax E1.2
Page 2: ...ABB SACE Emax 2 2 2017 ABB 1SDH001330R0002 ECN000058721 Rev A ...
Page 8: ...VI 2017 ABB SACE Emax 2 1SDH001330R0002 ECN000058721 Rev A ...
Page 9: ...ABB SACE Emax 2 3 2017 ABB 1SDH001330R0002 ECN000058721 Rev A ...
Page 310: ...ABB SACE Emax 2 304 2017 ABB 1SDH001330R0002 ECN000058721 Rev A Service 1 Power Care ...
