ABB SACE Tmax XT2 User Manual page 45

Power thresholds Function
The current thresholds allow you to set controls on current lines, to be combined with the
programmable contacts of the Ekip Signalling modules (in all versions).
Two pairs of programmable contacts are available:


It is possible to enable and set the thresholds in the Advanced - Alerts menu (page 27).
Parameters
Threshold
Threshold
I I1
Threshold
I I2
Threshold
Iw1
Threshold
Iw2
Figure 19
1SDH002031A1002 ECN000092998
Threshold 1 I1 and Threshold 2 I1, with control referred to I1
Threshold Iw1 and Threshold Iw2, with control referred to In
IMPORTANT:

The current thresholds do not manage the trip, just the alert

The function is active if the trip unit is powered by an auxiliary power supply
Available parameters
Enable: Activates protection and availability of protection threshold on menu
Threshold: The value is expressed as a percentage of the threshold I1, which
is settable in a range: 50 % I1 .. 100 % I1, with 1 % step
Enable: Activates protection and availability of protection threshold on menu
Threshold: The value is expressed as a percentage of the threshold I1, which
is settable in a range: 50 % I1 .. 100 % I1, with 1 % step
Enable: Activate protection and availability of protection threshold on menu
Direction: enables you to choose to have the signal when the current is
higher (Up) or lower (Down) than the threshold.
Threshold: The value is expressed both as an absolute value (Ampere) and
as a relative value (In), settable in a range: 0.1 In .. 10 In, with 0.01 step In
Enable: Activate protection and availability of protection threshold on menu
Direction: enables you to choose to have the signal when the current is
higher (Up) or lower (Down) than the threshold.
Threshold: The value is expressed both as an absolute value (Ampere) and
as a relative value (In), settable in a range: 0.1 In .. 10 In, with 0.01 step In
Rev. B
Default
OFF
50 % I1
OFF
75 % I1
OFF
Down
3 In
OFF
Up
3 In
SACE Tmax XT2 – XT4 | 45