Page 58 - Sace Emax 2 Manual for design engineers

ABB | SACE Emax 2
I Protection Function
If the current of one or more phases exceeds threshold I3, the protection trips and, after a non-programmable
t fixed time, transmits the TRIP command.
I3 I To check and simulate the trip times in relation to all the parameters, please consult:
• summary table of the protections with the operating characteristics (page 92)
• the graph with trip curve (page 99)
Parameters
I Parameter Description Default
Activates/deactivates the protection and its availability in the
Enable ON
parameters menu.
Establishes the value that activates the protection.
Threshold I3 The value is given as both absolute value (A) and relative value (In) and 4 In
can be set within the range: 1.5 In to 15 In, in 0.1 In steps
ZoneSelectivity Activates/deactivates the function OFF
Activates/deactivates the function and availability of the associated
StartUp enable OFF
parameters on the display (page 82)
Protection threshold valid during Startup time, in the conditions in
StartUp which the function is activated (page 82) 1,5 In
Threshold The value is given as both absolute value (A) and relative value (In) and
can be set within the range: 1.5 In to 15 In, in 0.1 In steps
This is the time for which the StartUp threshold remains activated and
is calculated from the moment the activation Threshold is exceeded
StartUp Time (page 82) 0.1 s
The value is given in seconds and can be set within the range: 0.1 s to
30 s, in 0.01 s steps

Limitations and additional functions
• threshold I3 must be higher than threshold I2 (if S and I protections are activated)
• I protection can be activated with MCR protection disabled
• the block functions can also be accessed by means of the service connector (via Ekip Connect) or
communication via system bus (page 83)

56 | © 2020 ABB | 1SDH001330R1002 - ECN000134959 - Rev. A Ekip Touch - Protections | 2 - Standard Protections