ABB SACE Emax E2.2 Installation, Operation And Maintenance Instructions For The Installer And The User page 43

Additional protections The Ekip T&P and Ekip Bluetooth modules, and the Ekip Connect software, allow you to set some protections
41 | © 2019 ABB | 1SDH001000R0002 - ECN000109166 - Rev. D
not available via dip-switch:
• Thermal Memory
• T Protection
• Prealarm threshold
• Hardware Trip
Thermal Memory
This function, available for protections L and S, reduces the tripping time of the protection based on the time
elapsed between multiple trips caused by heating of the cables.
IMPORTANT: for the S protection the function can be activated if the selected curve
is time-dependent.
T Protection
T protection protects the circuit-breaker against abnormal temperatures recorded by the protection trip unit.
T protection is always active; via Ekip Connect it is possible to enable tripping, which takes place for
temperatures t < -40 °C or t > 85 °C.
Pre-alarm
The purpose of the pre-alarm, available for L and G protections, is to signal that the measured current is near
the activation threshold of the protection itself.
It is possible to set the pre-alarm threshold in order to establish the pre-alarm activation values; the pre-alarm
threshold is expressed as a percentage in relation to the protection thresholds (I1 and I4) and is adjustable
between 50% and 90% (default value).
Example: with I1 = 0.6 In and pre-alarm threshold L=50 %, the pre-alarm is activated for currents greater
than 0.3 In
The pre-alarm condition is activated for currents higher than the threshold set, and is deactivated for:
• Current less than the pre-alarm threshold.
• Current greater than the activation threshold of protection.
Hardware Trip
If enabled, the protection activates if one or more disconnections of the current sensors, Rating plug, Trip coil
or an alarm inside the unit are detected.
The protection activates with a TRIP if the disconnections persist for more than one second; in the case of
Trip coil disconnection, the unit merely handles alarm signaling.
ABB | SACE Emax 2
Ekip Dip | 4 - Protections