Page 49 - MCCB-XT5

Continued from the previous page ABB | SACE Tmax XT
Ekip M Touch
With Ekip M Touch, G protection features the following differences compared to the other models:
• Block BlockOnStartup enabled and non-editable (page 76)
• StartUp Time non-editable and set with the Motor start-up value, depending on the trip class
(page 121)
• curve set as t=k, non-editable
Limitations and additional functions
• in the presence of curve t= k/I , the protection trip time is forced to t4 if the calculation results
2
give a theoretical value lower than t4 itself
• in the absence of Vaux, the minimum threshold is 0.25 In (for In = 300 A) or 0.2 In (for all the other
sizes); if lower values are set, the Trip unit forces the threshold to the minimum admissible value
and the "Configuration" error appears
• depending on the I4 threshold setting, the protection deactivates for an Ig higher than: 8 In with
threshold I4 ≥ 0.8 In; 6 In with 0.8 In > I4 ≥ 0.5 In; 4 In with 0,5 In > I4 ≥ 0,2 In; 2 In with I4 > 0.2 In
• operation with t4 = instantaneous requires the presence of Vaux; in self-supply, the Trip unit forces
the time to 100 ms and the "Configuration" error appears
• the block functions and type of selectivity can also be accessed by means of the service connector
(via Ekip Connect) or communication via system bus (page 73)
• with CB in UL standard configuration, the maximum value of t4 is 400 ms

Protection MCR Function
The protection remains activated for a time interval running from the open - closed change of status of
t the CB, after which it deactivates.
I3 MCR
If, during this time interval, the current of one or more phases exceeds threshold I3, the protection
transmits the TRIP command after a non-programmable fixed time.
The MCR protection only functions with Vaux.
To check and simulate the trip times in relation to all the parameters, please consult:
I • summary table of the protections with the operating characteristics (page 81)
• the graph with trip curve (page 89)
NOTE: to activate MCR, protection I must be disabled
Parameter Description Default
Activates/deactivates the protection and its availability in the
Enable OFF
parameters menu.
Establishes the value that activates the protection.
Threshold I3 The value is given as both absolute value (A) and relative value (In) 6 In
and can be set within the range: 1.5 In to 10 In, in 0.1 In steps
Defines the time interval in which the MCR protection remains
activated, as calculated from the open - closed change of status
Monitor Time 0,04 s
The value is given in seconds and can be set within the range:
0.04 s to 0.5 s, in 0.01 s steps
Activates/deactivates the function
NOTE: if at least two of the selectivity S, S2, I, 2I and MCR
ZoneSelectivity are enabled, the input and output are shared with the OR OFF
function; it is sufficient that even a selectivity is activated to
stimulate inputs and outputs

Limitations and additional functions
The block functions can also be accessed by means of the service connector (via Ekip Connect) or
communication via system bus (page 73)

47 | © 2022 ABB | 1SDH002039A1002 - ECN000212994 Protections | 2 - Standard Protections