Iinst; Additional Functions - ABB SACE Emax 2 Series Installation, Operation And Maintenance Instructions

Iinst The purpose of this protection is to maintain the integrity of the circuit-breaker and installation in

Additional functions

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the case of particularly high current values requiring shorter reaction times than those provided
by the instantaneous short-circuit-protection.
The protection cannot be disabled, and the tripping threshold and time are defined by ABB.
Functions
For some protections there are functions available that extend the functionality:
Protection
Thermal memory
Trip Enable
Zone selectivity
Startup Enable
Thermal Memory
This function reduces the tripping time of the protection based on the time elapsed between
multiple trips caused by heating of the cables.
IMPORTANT: the parameter can be activated if the function of the selected
protection is t=k/i
Trip Enable
Disables the trip command, in order to use the protection as an alarm signal, without any
opening commands.
Zone Selectivity
The function allows multiple circuit-breakers belonging to the same installation to be connected
together, in order to coordinate the releases and to reduce the tripping times in the case of
protections S and G.
The function allows circuit-breakers to be coordinated so that, in the event of a failure:
• The circuit-breaker closest to the fault trips.
• The other circuit-breakers are locked for a programmable time.
Startup Enable
The function allows you to modify the threshold of the protection for a period that can be set
by the user. The period is activated when a threshold is exceeded (Startup Threshold), which
can be programmed by the user via Ekip Connect software.
IMPORTANT:
• Startup can be activated with a fixed time protection function (t=k).
• The I3 startup threshold must be higher than the I2 startup threshold.
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Ekip Touch protection release | 9 - Touch protections
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