ABB SACE Tmax XT7 Operation And Maintenance Manual page 70

Cos φ Protection The protection activates an alarm when the total Cos φ value drops below the set threshold.
68 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
Continued from the previous page
Parameters
Parameter Description
Activates/deactivates the protection and its availability in the parameters
Enable
menu
Activates/deactivates transmission of the open command: if disabled, the
Trip Enable
alarm and exceedance of protection time are only managed as information
Defines the gradient of the line relating to threshold Q24.
Threshold Kq The value is given as absolute value (slope of the line) and can be set within
the range: -2 to 2 in 0.01 steps
This is the reactive power required to define the trip line and relative TRIP
area
Threshold The value is given as both absolute value (kVAR) and relative value (Sn) and
can be set within the range: 0.1 Sn to 1 Sn in 0.001 Sn steps
-Q24
NOTE: the threshold expressed in Sn is not preceded by the "-" sign,
but should still be understood as inverse reactive power
Defines the gradient of the line relating to threshold Q24.
Threshold
The value is given as absolute value (slope of the line) and can be set within
Kq2
the range: -2 to 2 in 0.01 steps
Defines the reactive power value at which the protection trips and is
required for the purpose of defining the relative TRIP area
Threshold The value is given as both absolute value (kVAR) and relative value (Sn) and
-Q25 can be set within the range: 0.1 Sn to 1 Sn in 0.001 Sn steps
NOTE: the threshold expressed in Sn is not preceded by the "-" sign,
but should still be understood as inverse reactive power
This is the trip time of the protection; the value is given in seconds and can
Time t24
be set within a range: 0.5 s to 100 s, in 0.1 s steps
This is the minimum activation voltage of the protection. The protection is
not activated if at least one line-to-line voltage value is less than threshold
Threshold
Vmin.
Vmin
The value is given as both absolute value (Volts) and relative value (Un) and
can be set within the range: 0.5 Un to 1.2 Un in 0.01 Un steps
Limitations and additional functions
• Ekip Touch accepts parameters in accordance with the following limitations: Q24 < Q25 and Kq < Kq2
• the block functions can also be accessed by means of the service connector (via Ekip Connect) or by
connection to the system bus (page 78).
Total cos φ is calculated as ratio between total active Power and total apparent Power.
Parameters
The parameters are available in the Advanced - Signaling menu (page 35)
Parameter Description
Activates/deactivates the protection and availability of the threshold in the
Enable
menu
Defines the value that activates the protection; can be set within the range:
Threshold
0.5 to 0.95 in 0.01 steps
ABB | SACE Tmax XT
Default
OFF
OFF
-2
0,1 Sn
2
0,11 Sn
100 s
0.5 Un
Default
OFF
0,95
Protections | 11 - Power protections