Protection Mcr - ABB SACE Emax E1.2 Operating Instructions For The Design Engineer

Protection MCR

t
I3
MCR
67 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
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Function
MCR protection has the same characteristics as I protection, with some variations:
• It acts only within an interval that starts from the closing of the circuit-breaker.
• It only works with auxiliary power supply or Ekip Measuring Pro module (with voltage sockets energized).
When the activation threshold is exceeded, the protection trips within a fixed non-adjustable time. The user
can set the tripping threshold.
I
Parameters
Here is a list of the available parameters:
Parameter Description
To activate/deactivate the protection.
Enable
It defines the current value that activates the protection when exceeded (with
reference to the figure above, the threshold is the part of the curve parallel to the
Threshold I3 y-axis).
It is represented both as an absolute value (Ampere) and as a relative value (In,
nominal value defined by the Rating Plug).
It defines the time interval during which the protection is active, starting from the
Monitor time
closing of the circuit-breaker.
Via Ekip Connect it is also possible to access the blocking functions, see page 72.
IMPORTANT: it can be only activated if the protection is deactivated.
ABB | SACE Emax 2
Ekip Touch protection trip unit | 9 - Touch protections