ABB | SACE Emax 2
Ekip Touch protection trip unit | 9 - Touch protections71 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
Iinst
The purpose of this protection is to maintain the integrity of the circuit-breaker and installation in 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.
Additional functions
Functions
For some protections there are functions available that extend the functionality:
Protection L S I G MCR IU T
Thermal memory x x
Trip Enable x x x x
Zone Selectivity x x
StartUp enable x x x
Blocks x x x x
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
2
.
Trip enable
It disables the opening command in order to use the protection as an alarm signal, without opening commands.
Zone Selectivity
The function allows multiple circuit-breakers in the same installation to be connected together, in order to
coordinate the trip units and to reduce the tripping times in the case of S and G protections.
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.
For further information see the chapter "1 - Zone Selectivity" on page 156.
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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