ABB SACE Tmax XT5 Operation And Maintenance Manual page 128

VS Warning A warning signal is activated if all three of the line-to-line voltages measured by the Trip unit are within the
FS Warning A warning signal is activated if the frequency measured by the Trip unit is within the window defined by the
F W1 Warning If the frequency measured by the Trip unit exceeds or falls below the threshold (depending on the direction
126 | © 2019 ABB | 1SDH002039A1002 - ECN000093027 - Rev. A
window defined by the control thresholds for the set time.
The Protections-Advanced-Warnings menu includes the control threshold submenu in which the parameters
can be entered:
Parameter Description
Activates/deactivates monitoring of the parameters and their availability in
Enable
the menu
Establishes whether the line-to-line voltages to be checked are those from
the internal sockets (Measuring) or from Ekip Synchrocheck, if present.
Signal source
NOTE: if Ekip Synchrocheck is set, monitoring will refer to one single
voltage
Establishes the lower limit value of the control band, given as both absolute
Threshold
value (Volts) and relative value (Un), which can be set within the range: 0.5
DOWN
Un to 1 Un in 0.001 Un steps
Establishes the upper limit value of the control band, given as both absolute
Threshold UP value (Volts) and relative value (Un), which can be set within the range: 1 Un
to 1.5 Un, in 0.001 Un steps
This is the monitoring time that activates the signal; the value is given in
Time
seconds and can be set within a range: 0.1 s to 900 s, in 0.1 s steps
control thresholds for the set time.
The Protections-Advanced-Warnings menu includes the control threshold submenu in which the parameters
can be entered:
Parameter Description
Activates/deactivates monitoring of the parameters and their availability in
Enable
the menu
Establishes whether the line-to-line voltages to be checked are those from
the internal sockets (Measuring) or from Ekip Synchrocheck, if present.
Signal source
NOTE: if Ekip Synchrocheck is set, monitoring will refer to one single
voltage
Establishes the lower limit value of the control band, given as both absolute
Threshold
value (Hertz) and relative value (Fn), which can be set within the range: 0.9
DOWN
Fn to 1 Fn in 0.001 Fn steps
Establishes the lower limit value of the control band, given as both absolute
Threshold UP value (Hertz) and relative value (Fn), which can be set within the range: 1 Fn
to 1.1 Fn in 0.001 Fn steps
This is the monitoring time that activates the signal; the value is given in
Time
seconds and can be set within the range: 0.1 s to 900 s, in 0.1 s steps
set), the corresponding alarm will be activated (no TRIP).
The Protections-Advanced-Warnings-F W Warnings menu includes the control threshold submenu in which
the parameters can be entered:
Parameter Description
Activates/deactivates the control threshold of the parameters and their
Enable
availability in the menu
Defines whether frequency monitoring is performed after the measured
Direction
sequence has dropped (Down) or been exceeded (Up)
Establishes the value that activates the alarm.
Threshold The value is given as both absolute value (Hertz) and relative value (Fn) and
can be set within the range: 0.9 Fn to 1.1 Fn in 0.001 Fn steps
ABB | SACE Tmax XT
Additional functions | 3 - IPS Interface protections
Default
Off
Meas.
0,9 Un
1,1 Un
30 s
Default
Off
Meas.
0,998 Fn
1,002 Fn
30 s
Default
Off
Down
3 Fn