ABB SACE Tmax XT2 - Page 45

1SDH002031A1002 ECN000092998 Rev. B SACE Tmax XT2 – XT4 | 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:
 Threshold 1 I1 and Threshold 2 I1, with control referred to I1
 Threshold Iw1 and Threshold Iw2, with control referred to In
It is possible to enable and set the thresholds in the Advanced - Alerts menu (page 27).
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
Parameters
Threshold
Available parameters
Default
Threshold
I I1
Enable: Activates protection and availability of protection threshold on menu
OFF
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
50 % I1
Threshold
I I2
Enable: Activates protection and availability of protection threshold on menu
OFF
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
75 % I1
Threshold
Iw1
Enable: Activate protection and availability of protection threshold on menu
OFF
Direction: enables you to choose to have the signal when the current is
higher (Up) or lower (Down) than the threshold.
Down
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
3 In
Threshold
Iw2
Enable: Activate protection and availability of protection threshold on menu
OFF
Direction: enables you to choose to have the signal when the current is
higher (Up) or lower (Down) than the threshold.
Up
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
3 In
Figure 19